Revert "Merge pull request #493 from hysz/features/deployer/multipleCodebaseSupport"

This reverts commit 70d403e6f8c56bc70e6d3471a770b9bbff5d72e7, reversing
changes made to 073bf738ddb271b6b4158798baf4cac3cb0608e9.

40 files changed, 5657 insertions, 521 deletions

diff --git a/packages/abi-gen/src/index.ts b/packages/abi-gen/src/index.ts
index ecef33b16..942bb12db 100644
--- a/packages/abi-gen/src/index.ts
+++ b/packages/abi-gen/src/index.ts
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 import { AbiDefinition, ConstructorAbi, EventAbi, MethodAbi } from '@0xproject/types';
-import { abiUtils, logUtils } from '@0xproject/utils';
+import { logUtils } from '@0xproject/utils';
 import chalk from 'chalk';
 import * as fs from 'fs';
 import { sync as globSync } from 'glob';
@@ -12,7 +12,7 @@ import * as yargs from 'yargs';
 
 import toSnakeCase = require('to-snake-case');
 
-import { ContextData, ContractsBackend, Method, ParamKind } from './types';
+import { ContextData, ContractsBackend, ParamKind } from './types';
 import { utils } from './utils';
 
 const ABI_TYPE_CONSTRUCTOR = 'constructor';
@@ -83,6 +83,7 @@ function writeOutputFile(name: string, renderedTsCode: string): void {
 
 Handlebars.registerHelper('parameterType', utils.solTypeToTsType.bind(utils, ParamKind.Input, args.backend));
 Handlebars.registerHelper('returnType', utils.solTypeToTsType.bind(utils, ParamKind.Output, args.backend));
+
 if (args.partials) {
     registerPartials(args.partials);
 }
@@ -125,12 +126,11 @@ for (const abiFileName of abiFileNames) {
     }
 
     const methodAbis = ABI.filter((abi: AbiDefinition) => abi.type === ABI_TYPE_METHOD) as MethodAbi[];
-    const sanitizedMethodAbis = abiUtils.renameOverloadedMethods(methodAbis) as MethodAbi[];
-    const methodsData = _.map(methodAbis, (methodAbi, methodAbiIndex: number) => {
-        _.forEach(methodAbi.inputs, (input, inputIndex: number) => {
+    const methodsData = _.map(methodAbis, methodAbi => {
+        _.map(methodAbi.inputs, (input, i: number) => {
             if (_.isEmpty(input.name)) {
                 // Auto-generated getters don't have parameter names
-                input.name = `index_${inputIndex}`;
+                input.name = `index_${i}`;
             }
         });
         // This will make templates simpler
@@ -138,8 +138,6 @@ for (const abiFileName of abiFileNames) {
             ...methodAbi,
             singleReturnValue: methodAbi.outputs.length === 1,
             hasReturnValue: methodAbi.outputs.length !== 0,
-            tsName: sanitizedMethodAbis[methodAbiIndex].name,
-            functionSignature: abiUtils.getFunctionSignature(methodAbi),
         };
         return methodData;
     });
diff --git a/packages/abi-gen/src/types.ts b/packages/abi-gen/src/types.ts
index 648281774..df5b1feaf 100644
--- a/packages/abi-gen/src/types.ts
+++ b/packages/abi-gen/src/types.ts
@@ -5,6 +5,13 @@ export enum ParamKind {
     Output = 'output',
 }
 
+export enum AbiType {
+    Function = 'function',
+    Constructor = 'constructor',
+    Event = 'event',
+    Fallback = 'fallback',
+}
+
 export enum ContractsBackend {
     Web3 = 'web3',
     Ethers = 'ethers',
@@ -13,8 +20,6 @@ export enum ContractsBackend {
 export interface Method extends MethodAbi {
     singleReturnValue: boolean;
     hasReturnValue: boolean;
-    tsName: string;
-    functionSignature: string;
 }
 
 export interface ContextData {
diff --git a/packages/abi-gen/src/utils.ts b/packages/abi-gen/src/utils.ts
index 20b734959..755fbc71a 100644
--- a/packages/abi-gen/src/utils.ts
+++ b/packages/abi-gen/src/utils.ts
@@ -1,9 +1,9 @@
-import { AbiType, ConstructorAbi, DataItem } from '@0xproject/types';
+import { ConstructorAbi, DataItem } from '@0xproject/types';
 import * as fs from 'fs';
 import * as _ from 'lodash';
 import * as path from 'path';
 
-import { ContractsBackend, ParamKind } from './types';
+import { AbiType, ContractsBackend, ParamKind } from './types';
 
 export const utils = {
     solTypeToTsType(paramKind: ParamKind, backend: ContractsBackend, solType: string, components?: DataItem[]): string {
diff --git a/packages/base-contract/src/index.ts b/packages/base-contract/src/index.ts
index bfa99fac1..bba686f8b 100644
--- a/packages/base-contract/src/index.ts
+++ b/packages/base-contract/src/index.ts
@@ -1,26 +1,13 @@
-import {
-    AbiDefinition,
-    AbiType,
-    ContractAbi,
-    DataItem,
-    MethodAbi,
-    Provider,
-    TxData,
-    TxDataPayable,
-} from '@0xproject/types';
-import { abiUtils, BigNumber } from '@0xproject/utils';
+import { ContractAbi, DataItem, Provider, TxData, TxDataPayable } from '@0xproject/types';
+import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as ethersContracts from 'ethers-contracts';
 import * as _ from 'lodash';
 
 import { formatABIDataItem } from './utils';
 
-export interface EthersInterfaceByFunctionSignature {
-    [key: string]: ethersContracts.Interface;
-}
-
 export class BaseContract {
-    protected _ethersInterfacesByFunctionSignature: EthersInterfaceByFunctionSignature;
+    protected _ethersInterface: ethersContracts.Interface;
     protected _web3Wrapper: Web3Wrapper;
     public abi: ContractAbi;
     public address: string;
@@ -62,37 +49,10 @@ export class BaseContract {
         }
         return txDataWithDefaults;
     }
-    protected _lookupEthersInterface(functionSignature: string): ethersContracts.Interface {
-        const ethersInterface = this._ethersInterfacesByFunctionSignature[functionSignature];
-        if (_.isUndefined(ethersInterface)) {
-            throw new Error(`Failed to lookup method with function signature '${functionSignature}'`);
-        }
-        return ethersInterface;
-    }
-    protected _lookupAbi(functionSignature: string): MethodAbi {
-        const methodAbi = _.find(this.abi, (abiDefinition: AbiDefinition) => {
-            if (abiDefinition.type !== AbiType.Function) {
-                return false;
-            }
-            const abiFunctionSignature = abiUtils.getFunctionSignature(abiDefinition);
-            if (abiFunctionSignature === functionSignature) {
-                return true;
-            }
-            return false;
-        }) as MethodAbi;
-        return methodAbi;
-    }
     constructor(abi: ContractAbi, address: string, provider: Provider, defaults?: Partial<TxData>) {
         this._web3Wrapper = new Web3Wrapper(provider, defaults);
         this.abi = abi;
         this.address = address;
-        const methodAbis = this.abi.filter(
-            (abiDefinition: AbiDefinition) => abiDefinition.type === AbiType.Function,
-        ) as MethodAbi[];
-        this._ethersInterfacesByFunctionSignature = {};
-        _.each(methodAbis, methodAbi => {
-            const functionSignature = abiUtils.getFunctionSignature(methodAbi);
-            this._ethersInterfacesByFunctionSignature[functionSignature] = new ethersContracts.Interface([methodAbi]);
-        });
+        this._ethersInterface = new ethersContracts.Interface(abi);
     }
 }
diff --git a/packages/contract_templates/contract.handlebars b/packages/contract_templates/contract.handlebars
index 472452d74..3e3f87f10 100644
--- a/packages/contract_templates/contract.handlebars
+++ b/packages/contract_templates/contract.handlebars
@@ -41,6 +41,6 @@ export class {{contractName}}Contract extends BaseContract {
 {{/each}}
     constructor(abi: ContractAbi, address: string, provider: Provider, defaults?: Partial<TxData>) {
         super(abi, address, provider, defaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_ethersInterface', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
diff --git a/packages/contract_templates/partials/callAsync.handlebars b/packages/contract_templates/partials/callAsync.handlebars
index a6f4abdf2..8de69203e 100644
--- a/packages/contract_templates/partials/callAsync.handlebars
+++ b/packages/contract_templates/partials/callAsync.handlebars
@@ -5,9 +5,9 @@ async callAsync(
     defaultBlock?: BlockParam,
 ): Promise<{{> return_type outputs=outputs}}> {
     const self = this as any as {{contractName}}Contract;
-    const inputAbi = self._lookupAbi('{{this.functionSignature}}').inputs;
+    const inputAbi = (_.find(self.abi, {name: '{{this.name}}'}) as MethodAbi).inputs;
     [{{> params inputs=inputs}}] = BaseContract._formatABIDataItemList(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString.bind(self));
-    const encodedData = self._lookupEthersInterface('{{this.functionSignature}}').functions.{{this.name}}(
+    const encodedData = self._ethersInterface.functions.{{this.name}}(
         {{> params inputs=inputs}}
     ).data;
     const callDataWithDefaults = await self._applyDefaultsToTxDataAsync(
diff --git a/packages/contract_templates/partials/tx.handlebars b/packages/contract_templates/partials/tx.handlebars
index 22fe0c597..41ba6d3f7 100644
--- a/packages/contract_templates/partials/tx.handlebars
+++ b/packages/contract_templates/partials/tx.handlebars
@@ -1,4 +1,4 @@
-public {{this.tsName}} = {
+public {{this.name}} = {
     async sendTransactionAsync(
     {{> typed_params inputs=inputs}}
     {{#this.payable}}
@@ -9,17 +9,17 @@ public {{this.tsName}} = {
     {{/this.payable}}
     ): Promise<string> {
         const self = this as any as {{contractName}}Contract;
-        const inputAbi = self._lookupAbi('{{this.functionSignature}}').inputs;
+        const inputAbi = (_.find(self.abi, {name: '{{this.name}}'}) as MethodAbi).inputs;
         [{{> params inputs=inputs}}] = BaseContract._formatABIDataItemList(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString.bind(self));
-        const encodedData = self._lookupEthersInterface('{{this.functionSignature}}').functions.{{this.name}}(
+        const encodedData = self._ethersInterface.functions.{{this.name}}(
             {{> params inputs=inputs}}
-        ).data;
+        ).data
         const txDataWithDefaults = await self._applyDefaultsToTxDataAsync(
             {
                 ...txData,
                 data: encodedData,
             },
-            self.{{this.tsName}}.estimateGasAsync.bind(
+            self.{{this.name}}.estimateGasAsync.bind(
                 self,
                 {{> params inputs=inputs}}
             ),
@@ -32,11 +32,11 @@ public {{this.tsName}} = {
         txData: Partial<TxData> = {},
     ): Promise<number> {
         const self = this as any as {{contractName}}Contract;
-        const inputAbi = self._lookupAbi('{{this.functionSignature}}').inputs;
+        const inputAbi = (_.find(self.abi, {name: '{{this.name}}'}) as MethodAbi).inputs;
         [{{> params inputs=inputs}}] = BaseContract._formatABIDataItemList(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString.bind(this));
-        const encodedData = self._lookupEthersInterface('{{this.functionSignature}}').functions.{{this.name}}(
+        const encodedData = self._ethersInterface.functions.{{this.name}}(
             {{> params inputs=inputs}}
-        ).data;
+        ).data
         const txDataWithDefaults = await self._applyDefaultsToTxDataAsync(
             {
                 ...txData,
@@ -50,11 +50,11 @@ public {{this.tsName}} = {
     {{> typed_params inputs=inputs}}
     ): string {
         const self = this as any as {{contractName}}Contract;
-        const inputAbi = self._lookupAbi('{{this.functionSignature}}').inputs;
+        const inputAbi = (_.find(self.abi, {name: '{{this.name}}'}) as MethodAbi).inputs;
         [{{> params inputs=inputs}}] = BaseContract._formatABIDataItemList(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString.bind(self));
-        const abiEncodedTransactionData = self._lookupEthersInterface('{{this.name}}').functions.{{this.name}}(
+        const abiEncodedTransactionData = self._ethersInterface.functions.{{this.name}}(
             {{> params inputs=inputs}}
-        ).data;
+        ).data
         return abiEncodedTransactionData;
     },
     {{> callAsync}}
diff --git a/packages/contracts/package.json b/packages/contracts/package.json
index ad338bd5f..eb1701a18 100644
--- a/packages/contracts/package.json
+++ b/packages/contracts/package.json
@@ -16,7 +16,7 @@
         "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
         "run_mocha": "mocha 'lib/test/**/*.js' --timeout 100000 --bail --exit",
         "compile:comment": "Yarn workspaces do not link binaries correctly so we need to reference them directly https://github.com/yarnpkg/yarn/issues/3846",
-        "compile": "node ../deployer/lib/src/cli.js compile --contracts ${npm_package_config_contracts} --contract-dirs src/contracts --artifacts-dir ../migrations/src/artifacts",
+        "compile": "node ../deployer/lib/src/cli.js compile --contracts ${npm_package_config_contracts} --contracts-dir src/contracts --artifacts-dir ../migrations/src/artifacts",
         "clean": "shx rm -rf ./lib",
         "generate_contract_wrappers": "node ../abi-gen/lib/index.js --abis  ${npm_package_config_abis} --template ../contract_templates/contract.handlebars --partials '../contract_templates/partials/**/*.handlebars' --output src/contract_wrappers/generated --backend ethers && prettier --write 'src/contract_wrappers/generated/**.ts'",
         "lint": "tslint --project . 'migrations/**/*.ts' 'test/**/*.ts' 'util/**/*.ts' 'deploy/**/*.ts'",
diff --git a/packages/contracts/src/artifacts/AccountLevels.json b/packages/contracts/src/artifacts/AccountLevels.json
new file mode 100644
index 000000000..2729df1f2
--- /dev/null
+++ b/packages/contracts/src/artifacts/AccountLevels.json
@@ -0,0 +1,39 @@
+{
+    "contract_name": "AccountLevels",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0x48558bbda893aa15786836980a5fffb694db15163d462619c4dcb0f8ad97977b",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "user",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "accountLevel",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                }
+            ],
+            "bytecode": "0x6060604052341561000f57600080fd5b60c48061001d6000396000f300606060405260043610603f576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff1680631cbd0519146044575b600080fd5b3415604e57600080fd5b6078600480803573ffffffffffffffffffffffffffffffffffffffff16906020019091905050608e565b6040518082815260200191505060405180910390f35b60008090509190505600a165627a7a723058206ae1f83a93f632065cf424c76ac04c7a2e38c87335cf80ffd71c3e4cc2ef5e990029",
+            "runtime_bytecode": "0x606060405260043610603f576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff1680631cbd0519146044575b600080fd5b3415604e57600080fd5b6078600480803573ffffffffffffffffffffffffffffffffffffffff16906020019091905050608e565b6040518082815260200191505060405180910390f35b60008090509190505600a165627a7a723058206ae1f83a93f632065cf424c76ac04c7a2e38c87335cf80ffd71c3e4cc2ef5e990029",
+            "updated_at": 1523374106354,
+            "source_map": "26:388:0:-;;;;;;;;;;;;;;;;;",
+            "source_map_runtime": "26:388:0:-;;;;;;;;;;;;;;;;;;;;;;;;328:84;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;381:4;404:1;397:8;;328:84;;;:::o",
+            "sources": [
+                "src/contracts/current/tutorials/EtherDelta/AccountLevels.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/Arbitrage.json b/packages/contracts/src/artifacts/Arbitrage.json
new file mode 100644
index 000000000..709758733
--- /dev/null
+++ b/packages/contracts/src/artifacts/Arbitrage.json
@@ -0,0 +1,121 @@
+{
+    "contract_name": "Arbitrage",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0x9d4dca59038ae8c995d9d06db8e5184dc52133935ab31834e98ca16a4cba24a5",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "tokenAddress",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "setAllowances",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "owner",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "newOwner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "transferOwnership",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "addresses",
+                            "type": "address[6]"
+                        },
+                        {
+                            "name": "values",
+                            "type": "uint256[12]"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8[2]"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32[2]"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32[2]"
+                        }
+                    ],
+                    "name": "makeAtomicTrade",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "inputs": [
+                        {
+                            "name": "_exchangeAddress",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_etherDeltaAddress",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_proxyAddress",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "constructor"
+                }
+            ],
+            "bytecode": "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+            "updated_at": 1523374104800,
+            "source_map": "427:3407:3:-;;;586:241;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;303:10:6;295:5;;:18;;;;;;;;;;;;;;;;;;712:16:3;692:8;;:37;;;;;;;;;;;;;;;;;;763:18;739:10;;:43;;;;;;;;;;;;;;;;;;807:13;792:12;;:28;;;;;;;;;;;;;;;;;;586:241;;;427:3407;;;;;;",
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+            "sources": [
+                "src/contracts/current/protocol/Exchange/Exchange.sol",
+                "src/contracts/current/protocol/TokenTransferProxy/TokenTransferProxy.sol",
+                "src/contracts/current/tokens/Token/Token.sol",
+                "src/contracts/current/tutorials/Arbitrage/Arbitrage.sol",
+                "src/contracts/current/tutorials/EtherDelta/AccountLevels.sol",
+                "src/contracts/current/tutorials/EtherDelta/EtherDelta.sol",
+                "src/contracts/current/utils/Ownable/Ownable.sol",
+                "src/contracts/current/utils/SafeMath/SafeMath.sol",
+                "src/contracts/previous/Ownable/Ownable_v1.sol",
+                "src/contracts/previous/SafeMath/SafeMath_v1.sol",
+                "src/contracts/previous/Token/Token_v1.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/DummyToken.json b/packages/contracts/src/artifacts/DummyToken.json
new file mode 100644
index 000000000..d0cef0851
--- /dev/null
+++ b/packages/contracts/src/artifacts/DummyToken.json
@@ -0,0 +1,324 @@
+{
+    "contract_name": "DummyToken",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0x2f9492eca3d4b55758be98c05afd51d51310ed97769b69ae7d45366f038de653",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "name",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "string"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_spender",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "approve",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "totalSupply",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
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+                    "inputs": [
+                        {
+                            "name": "_from",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transferFrom",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "decimals",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "balanceOf",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "owner",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "symbol",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "string"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
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+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "mint",
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+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transfer",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
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+                {
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+                    "inputs": [
+                        {
+                            "name": "_owner",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_spender",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "allowance",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_target",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "setBalance",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "newOwner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "transferOwnership",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "inputs": [
+                        {
+                            "name": "_name",
+                            "type": "string"
+                        },
+                        {
+                            "name": "_symbol",
+                            "type": "string"
+                        },
+                        {
+                            "name": "_decimals",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "_totalSupply",
+                            "type": "uint256"
+                        }
+                    ],
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+                            "type": "address"
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+                        {
+                            "indexed": false,
+                            "name": "_value",
+                            "type": "uint256"
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+                    "name": "Transfer",
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+                    "name": "Approval",
+                    "type": "event"
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+            "sources": [
+                "src/contracts/current/test/DummyToken/DummyToken.sol",
+                "src/contracts/current/test/Mintable/Mintable.sol",
+                "src/contracts/current/tokens/ERC20Token/ERC20Token.sol",
+                "src/contracts/current/tokens/Token/Token.sol",
+                "src/contracts/current/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol",
+                "src/contracts/current/utils/Ownable/Ownable.sol",
+                "src/contracts/current/utils/SafeMath/SafeMath.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/EtherDelta.json b/packages/contracts/src/artifacts/EtherDelta.json
new file mode 100644
index 000000000..9683001ab
--- /dev/null
+++ b/packages/contracts/src/artifacts/EtherDelta.json
@@ -0,0 +1,875 @@
+{
+    "contract_name": "EtherDelta",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0x00c7e1f07a9b18919e3f2989e837a31bd5089a3f877f8facd320d60b919c6023",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "expires",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "nonce",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "user",
+                            "type": "address"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "amount",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "trade",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "expires",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "nonce",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "order",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        },
+                        {
+                            "name": "",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "orderFills",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "expires",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "nonce",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "cancelOrder",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "amount",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "withdraw",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amount",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "depositToken",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "expires",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "nonce",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "user",
+                            "type": "address"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "amountFilled",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        },
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "tokens",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "feeMake_",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "changeFeeMake",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "feeMake",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "feeRebate_",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "changeFeeRebate",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "feeAccount",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "expires",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "nonce",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "user",
+                            "type": "address"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "amount",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "sender",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "testTrade",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "feeAccount_",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "changeFeeAccount",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "feeRebate",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "feeTake_",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "changeFeeTake",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "admin_",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "changeAdmin",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amount",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "withdrawToken",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        },
+                        {
+                            "name": "",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "orders",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "feeTake",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [],
+                    "name": "deposit",
+                    "outputs": [],
+                    "payable": true,
+                    "stateMutability": "payable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "accountLevelsAddr_",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "changeAccountLevelsAddr",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "accountLevelsAddr",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "user",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "balanceOf",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "admin",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "expires",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "nonce",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "user",
+                            "type": "address"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "availableVolume",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "inputs": [
+                        {
+                            "name": "admin_",
+                            "type": "address"
+                        },
+                        {
+                            "name": "feeAccount_",
+                            "type": "address"
+                        },
+                        {
+                            "name": "accountLevelsAddr_",
+                            "type": "address"
+                        },
+                        {
+                            "name": "feeMake_",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "feeTake_",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "feeRebate_",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "constructor"
+                },
+                {
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "fallback"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "expires",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "nonce",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "user",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "Order",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "expires",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "nonce",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "user",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "s",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "Cancel",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "tokenGet",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "amountGet",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "tokenGive",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "amountGive",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "get",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "give",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "Trade",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "user",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "amount",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "balance",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Deposit",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "user",
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+                        {
+                            "indexed": false,
+                            "name": "amount",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "balance",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Withdraw",
+                    "type": "event"
+                }
+            ],
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+            "sources": [
+                "src/contracts/current/tokens/Token/Token.sol",
+                "src/contracts/current/tutorials/EtherDelta/AccountLevels.sol",
+                "src/contracts/current/tutorials/EtherDelta/EtherDelta.sol",
+                "src/contracts/current/utils/SafeMath/SafeMath.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/Exchange.json b/packages/contracts/src/artifacts/Exchange.json
new file mode 100644
index 000000000..6399e544a
--- /dev/null
+++ b/packages/contracts/src/artifacts/Exchange.json
@@ -0,0 +1,631 @@
+{
+    "contract_name": "Exchange",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0xed7525b123061d69ae37377fac4a2f71e09eaa0e91a9bcf12359a60cd61aadac",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "numerator",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "denominator",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "target",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "isRoundingError",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "filled",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "cancelled",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "orderAddresses",
+                            "type": "address[5][]"
+                        },
+                        {
+                            "name": "orderValues",
+                            "type": "uint256[6][]"
+                        },
+                        {
+                            "name": "fillTakerTokenAmount",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "shouldThrowOnInsufficientBalanceOrAllowance",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8[]"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32[]"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32[]"
+                        }
+                    ],
+                    "name": "fillOrdersUpTo",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "orderAddresses",
+                            "type": "address[5]"
+                        },
+                        {
+                            "name": "orderValues",
+                            "type": "uint256[6]"
+                        },
+                        {
+                            "name": "cancelTakerTokenAmount",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "cancelOrder",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "ZRX_TOKEN_CONTRACT",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "orderAddresses",
+                            "type": "address[5][]"
+                        },
+                        {
+                            "name": "orderValues",
+                            "type": "uint256[6][]"
+                        },
+                        {
+                            "name": "fillTakerTokenAmounts",
+                            "type": "uint256[]"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8[]"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32[]"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32[]"
+                        }
+                    ],
+                    "name": "batchFillOrKillOrders",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "orderAddresses",
+                            "type": "address[5]"
+                        },
+                        {
+                            "name": "orderValues",
+                            "type": "uint256[6]"
+                        },
+                        {
+                            "name": "fillTakerTokenAmount",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "fillOrKillOrder",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "orderHash",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "getUnavailableTakerTokenAmount",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "signer",
+                            "type": "address"
+                        },
+                        {
+                            "name": "hash",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "isValidSignature",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "numerator",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "denominator",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "target",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "getPartialAmount",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "TOKEN_TRANSFER_PROXY_CONTRACT",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "orderAddresses",
+                            "type": "address[5][]"
+                        },
+                        {
+                            "name": "orderValues",
+                            "type": "uint256[6][]"
+                        },
+                        {
+                            "name": "fillTakerTokenAmounts",
+                            "type": "uint256[]"
+                        },
+                        {
+                            "name": "shouldThrowOnInsufficientBalanceOrAllowance",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8[]"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32[]"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32[]"
+                        }
+                    ],
+                    "name": "batchFillOrders",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "orderAddresses",
+                            "type": "address[5][]"
+                        },
+                        {
+                            "name": "orderValues",
+                            "type": "uint256[6][]"
+                        },
+                        {
+                            "name": "cancelTakerTokenAmounts",
+                            "type": "uint256[]"
+                        }
+                    ],
+                    "name": "batchCancelOrders",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "orderAddresses",
+                            "type": "address[5]"
+                        },
+                        {
+                            "name": "orderValues",
+                            "type": "uint256[6]"
+                        },
+                        {
+                            "name": "fillTakerTokenAmount",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "shouldThrowOnInsufficientBalanceOrAllowance",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "v",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "r",
+                            "type": "bytes32"
+                        },
+                        {
+                            "name": "s",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "fillOrder",
+                    "outputs": [
+                        {
+                            "name": "filledTakerTokenAmount",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "orderAddresses",
+                            "type": "address[5]"
+                        },
+                        {
+                            "name": "orderValues",
+                            "type": "uint256[6]"
+                        }
+                    ],
+                    "name": "getOrderHash",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "EXTERNAL_QUERY_GAS_LIMIT",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint16"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "VERSION",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "string"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "inputs": [
+                        {
+                            "name": "_zrxToken",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_tokenTransferProxy",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "constructor"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "maker",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "taker",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "feeRecipient",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "makerToken",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "takerToken",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "filledMakerTokenAmount",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "filledTakerTokenAmount",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "paidMakerFee",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "paidTakerFee",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "tokens",
+                            "type": "bytes32"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "orderHash",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "LogFill",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "maker",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "feeRecipient",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "makerToken",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "takerToken",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "cancelledMakerTokenAmount",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "cancelledTakerTokenAmount",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "tokens",
+                            "type": "bytes32"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "orderHash",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "LogCancel",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "errorId",
+                            "type": "uint8"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "orderHash",
+                            "type": "bytes32"
+                        }
+                    ],
+                    "name": "LogError",
+                    "type": "event"
+                }
+            ],
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+            "sources": [
+                "src/contracts/current/protocol/Exchange/Exchange.sol",
+                "src/contracts/current/protocol/TokenTransferProxy/TokenTransferProxy.sol",
+                "src/contracts/previous/Ownable/Ownable_v1.sol",
+                "src/contracts/previous/SafeMath/SafeMath_v1.sol",
+                "src/contracts/previous/Token/Token_v1.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/MaliciousToken.json b/packages/contracts/src/artifacts/MaliciousToken.json
new file mode 100644
index 000000000..19ef69846
--- /dev/null
+++ b/packages/contracts/src/artifacts/MaliciousToken.json
@@ -0,0 +1,195 @@
+{
+    "contract_name": "MaliciousToken",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0xd31259e791da9de56d06674f846caf98d2108f325bb5d4d38689f336b8105e93",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_spender",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "approve",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "totalSupply",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_from",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transferFrom",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "balanceOf",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transfer",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_owner",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_spender",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "allowance",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "_from",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Transfer",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "_owner",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "_spender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Approval",
+                    "type": "event"
+                }
+            ],
+            "bytecode": "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",
+            "runtime_bytecode": "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",
+            "updated_at": 1523374101287,
+            "source_map": "96:556:0:-;;;162:1;140:23;;;;;;;;;;;;;;;;;;;;96:556;;;;;;;;;;;;;;",
+            "source_map_runtime": "96:556:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;853:214:1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1472:23;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;435:412;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;303:157:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;107:322:1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;466:184:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;853:214:1;933:4;985:6;953:7;:19;961:10;953:19;;;;;;;;;;;;;;;:29;973:8;953:29;;;;;;;;;;;;;;;:38;;;;1022:8;1001:38;;1010:10;1001:38;;;1032:6;1001:38;;;;;;;;;;;;;;;;;;1056:4;1049:11;;853:214;;;;:::o;1472:23::-;;;;:::o;435:412::-;530:4;577:6;558:8;:15;567:5;558:15;;;;;;;;;;;;;;;;:25;;:65;;;;;617:6;587:7;:14;595:5;587:14;;;;;;;;;;;;;;;:26;602:10;587:26;;;;;;;;;;;;;;;;:36;;558:65;:108;;;;;653:8;:13;662:3;653:13;;;;;;;;;;;;;;;;643:6;627:8;:13;636:3;627:13;;;;;;;;;;;;;;;;:22;:39;;558:108;550:117;;;;;;;;694:6;677:8;:13;686:3;677:13;;;;;;;;;;;;;;;;:23;;;;;;;;;;;729:6;710:8;:15;719:5;710:15;;;;;;;;;;;;;;;;:25;;;;;;;;;;;775:6;745:7;:14;753:5;745:14;;;;;;;;;;;;;;;:26;760:10;745:26;;;;;;;;;;;;;;;;:36;;;;;;;;;;;807:3;791:28;;800:5;791:28;;;812:6;791:28;;;;;;;;;;;;;;;;;;836:4;829:11;;435:412;;;;;:::o;303:157:0:-;387:4;407:13;:11;:13::i;:::-;437:8;:16;446:6;437:16;;;;;;;;;;;;;;;;430:23;;303:157;;;:::o;107:322:1:-;183:4;235:6;211:8;:20;220:10;211:20;;;;;;;;;;;;;;;;:30;;:73;;;;;271:8;:13;280:3;271:13;;;;;;;;;;;;;;;;261:6;245:8;:13;254:3;245:13;;;;;;;;;;;;;;;;:22;:39;;211:73;203:82;;;;;;;;319:6;295:8;:20;304:10;295:20;;;;;;;;;;;;;;;;:30;;;;;;;;;;;352:6;335:8;:13;344:3;335:13;;;;;;;;;;;;;;;;:23;;;;;;;;;;;389:3;368:33;;377:10;368:33;;;394:6;368:33;;;;;;;;;;;;;;;;;;418:4;411:11;;107:322;;;;:::o;466:184:0:-;568:4;588:13;:11;:13::i;:::-;618:7;:15;626:6;618:15;;;;;;;;;;;;;;;:25;634:8;618:25;;;;;;;;;;;;;;;;611:32;;466:184;;;;:::o;221:76::-;275:13;;:15;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;221:76::o",
+            "sources": [
+                "src/contracts/current/test/MaliciousToken/MaliciousToken.sol",
+                "src/contracts/current/tokens/ERC20Token/ERC20Token.sol",
+                "src/contracts/current/tokens/Token/Token.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/MultiSigWallet.json b/packages/contracts/src/artifacts/MultiSigWallet.json
new file mode 100644
index 000000000..fcd643d89
--- /dev/null
+++ b/packages/contracts/src/artifacts/MultiSigWallet.json
@@ -0,0 +1,551 @@
+{
+    "contract_name": "MultiSigWallet",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0xe4dcaad5ebc708ef4258ff1a4152c7b94956a61f99db39fb7ae3003cc7087234",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "owners",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "removeOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "revokeConfirmation",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "isOwner",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "confirmations",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "pending",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "name": "getTransactionCount",
+                    "outputs": [
+                        {
+                            "name": "count",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "addOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "isConfirmed",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "getConfirmationCount",
+                    "outputs": [
+                        {
+                            "name": "count",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transactions",
+                    "outputs": [
+                        {
+                            "name": "destination",
+                            "type": "address"
+                        },
+                        {
+                            "name": "value",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "data",
+                            "type": "bytes"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "getOwners",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "from",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "to",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "pending",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "name": "getTransactionIds",
+                    "outputs": [
+                        {
+                            "name": "_transactionIds",
+                            "type": "uint256[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "getConfirmations",
+                    "outputs": [
+                        {
+                            "name": "_confirmations",
+                            "type": "address[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "transactionCount",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_required",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "changeRequirement",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "confirmTransaction",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "destination",
+                            "type": "address"
+                        },
+                        {
+                            "name": "value",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "data",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "submitTransaction",
+                    "outputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "MAX_OWNER_COUNT",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "required",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        },
+                        {
+                            "name": "newOwner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "replaceOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "executeTransaction",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "inputs": [
+                        {
+                            "name": "_owners",
+                            "type": "address[]"
+                        },
+                        {
+                            "name": "_required",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "constructor"
+                },
+                {
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+                    "stateMutability": "payable",
+                    "type": "fallback"
+                },
+                {
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+                            "name": "sender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Confirmation",
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+                },
+                {
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+                    "inputs": [
+                        {
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+                            "type": "address"
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+                        {
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+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
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+                    "name": "Revocation",
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+                {
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+                            "name": "transactionId",
+                            "type": "uint256"
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+                            "name": "value",
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+                            "type": "uint256"
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+            "sources": [
+                "src/contracts/current/multisig/MultiSigWallet/MultiSigWallet.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/MultiSigWalletWithTimeLock.json b/packages/contracts/src/artifacts/MultiSigWalletWithTimeLock.json
new file mode 100644
index 000000000..ce972a19e
--- /dev/null
+++ b/packages/contracts/src/artifacts/MultiSigWalletWithTimeLock.json
@@ -0,0 +1,632 @@
+{
+    "contract_name": "MultiSigWalletWithTimeLock",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0xbb079315d5a2798ed8399ea2a110cefcc083e33684ad5f5698cd3f582568c4c6",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "owners",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "removeOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "revokeConfirmation",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "isOwner",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "confirmations",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "secondsTimeLocked",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "pending",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "name": "getTransactionCount",
+                    "outputs": [
+                        {
+                            "name": "count",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "addOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "isConfirmed",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_secondsTimeLocked",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "changeTimeLock",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "getConfirmationCount",
+                    "outputs": [
+                        {
+                            "name": "count",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transactions",
+                    "outputs": [
+                        {
+                            "name": "destination",
+                            "type": "address"
+                        },
+                        {
+                            "name": "value",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "data",
+                            "type": "bytes"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "getOwners",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "from",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "to",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "pending",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "name": "getTransactionIds",
+                    "outputs": [
+                        {
+                            "name": "_transactionIds",
+                            "type": "uint256[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "getConfirmations",
+                    "outputs": [
+                        {
+                            "name": "_confirmations",
+                            "type": "address[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "transactionCount",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_required",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "changeRequirement",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "confirmTransaction",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "destination",
+                            "type": "address"
+                        },
+                        {
+                            "name": "value",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "data",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "submitTransaction",
+                    "outputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "confirmationTimes",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "MAX_OWNER_COUNT",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "required",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        },
+                        {
+                            "name": "newOwner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "replaceOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "executeTransaction",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "inputs": [
+                        {
+                            "name": "_owners",
+                            "type": "address[]"
+                        },
+                        {
+                            "name": "_required",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "_secondsTimeLocked",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "constructor"
+                },
+                {
+                    "payable": true,
+                    "stateMutability": "payable",
+                    "type": "fallback"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "confirmationTime",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "ConfirmationTimeSet",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "secondsTimeLocked",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "TimeLockChange",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "sender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Confirmation",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "sender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Revocation",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Submission",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Execution",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "ExecutionFailure",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "sender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Deposit",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "OwnerAddition",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "OwnerRemoval",
+                    "type": "event"
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+                {
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+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "required",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "RequirementChange",
+                    "type": "event"
+                }
+            ],
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+            "sources": [
+                "src/contracts/current/multisig/MultiSigWallet/MultiSigWallet.sol",
+                "src/contracts/current/multisig/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.json b/packages/contracts/src/artifacts/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.json
new file mode 100644
index 000000000..9ee068cba
--- /dev/null
+++ b/packages/contracts/src/artifacts/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.json
@@ -0,0 +1,684 @@
+{
+    "contract_name": "MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0x22f98f4bdfb835e87b3541309d2163fc6ef5da91bf84f4304b9b1052c93dfb0d",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "owners",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "removeOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "revokeConfirmation",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "isOwner",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "confirmations",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "secondsTimeLocked",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "pending",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "name": "getTransactionCount",
+                    "outputs": [
+                        {
+                            "name": "count",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "data",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "isFunctionRemoveAuthorizedAddress",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "executeRemoveAuthorizedAddress",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "addOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "isConfirmed",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_secondsTimeLocked",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "changeTimeLock",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "getConfirmationCount",
+                    "outputs": [
+                        {
+                            "name": "count",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transactions",
+                    "outputs": [
+                        {
+                            "name": "destination",
+                            "type": "address"
+                        },
+                        {
+                            "name": "value",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "data",
+                            "type": "bytes"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "getOwners",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "from",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "to",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "pending",
+                            "type": "bool"
+                        },
+                        {
+                            "name": "executed",
+                            "type": "bool"
+                        }
+                    ],
+                    "name": "getTransactionIds",
+                    "outputs": [
+                        {
+                            "name": "_transactionIds",
+                            "type": "uint256[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "TOKEN_TRANSFER_PROXY_CONTRACT",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "getConfirmations",
+                    "outputs": [
+                        {
+                            "name": "_confirmations",
+                            "type": "address[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "transactionCount",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_required",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "changeRequirement",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "confirmTransaction",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "destination",
+                            "type": "address"
+                        },
+                        {
+                            "name": "value",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "data",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "submitTransaction",
+                    "outputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "confirmationTimes",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "MAX_OWNER_COUNT",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "required",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "owner",
+                            "type": "address"
+                        },
+                        {
+                            "name": "newOwner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "replaceOwner",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "executeTransaction",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "inputs": [
+                        {
+                            "name": "_owners",
+                            "type": "address[]"
+                        },
+                        {
+                            "name": "_required",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "_secondsTimeLocked",
+                            "type": "uint256"
+                        },
+                        {
+                            "name": "_tokenTransferProxy",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "constructor"
+                },
+                {
+                    "payable": true,
+                    "stateMutability": "payable",
+                    "type": "fallback"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "confirmationTime",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "ConfirmationTimeSet",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "secondsTimeLocked",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "TimeLockChange",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "sender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Confirmation",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "sender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Revocation",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Submission",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Execution",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "transactionId",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "ExecutionFailure",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "sender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Deposit",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "OwnerAddition",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "OwnerRemoval",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": false,
+                            "name": "required",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "RequirementChange",
+                    "type": "event"
+                }
+            ],
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+            "sources": [
+                "src/contracts/current/multisig/MultiSigWallet/MultiSigWallet.sol",
+                "src/contracts/current/multisig/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol",
+                "src/contracts/current/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/Token.json b/packages/contracts/src/artifacts/Token.json
new file mode 100644
index 000000000..9bd9dab5d
--- /dev/null
+++ b/packages/contracts/src/artifacts/Token.json
@@ -0,0 +1,179 @@
+{
+    "contract_name": "Token",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0xe43382be55ddb9c7a28567b4cc59e35072da198e6c49a90ff1396aa8399fd61e",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_spender",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "approve",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_from",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transferFrom",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "balanceOf",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transfer",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_owner",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_spender",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "allowance",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "_from",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Transfer",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "_owner",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "_spender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Approval",
+                    "type": "event"
+                }
+            ],
+            "bytecode": "0x6060604052341561000f57600080fd5b6102ac8061001e6000396000f30060606040526004361061006d576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063095ea7b31461007257806323b872dd146100cc57806370a0823114610145578063a9059cbb14610192578063dd62ed3e146101ec575b600080fd5b341561007d57600080fd5b6100b2600480803573ffffffffffffffffffffffffffffffffffffffff16906020019091908035906020019091905050610258565b604051808215151515815260200191505060405180910390f35b34156100d757600080fd5b61012b600480803573ffffffffffffffffffffffffffffffffffffffff1690602001909190803573ffffffffffffffffffffffffffffffffffffffff16906020019091908035906020019091905050610260565b604051808215151515815260200191505060405180910390f35b341561015057600080fd5b61017c600480803573ffffffffffffffffffffffffffffffffffffffff16906020019091905050610269565b6040518082815260200191505060405180910390f35b341561019d57600080fd5b6101d2600480803573ffffffffffffffffffffffffffffffffffffffff16906020019091908035906020019091905050610270565b604051808215151515815260200191505060405180910390f35b34156101f757600080fd5b610242600480803573ffffffffffffffffffffffffffffffffffffffff1690602001909190803573ffffffffffffffffffffffffffffffffffffffff16906020019091905050610278565b6040518082815260200191505060405180910390f35b600092915050565b60009392505050565b6000919050565b600092915050565b6000929150505600a165627a7a72305820a45fa3403e0a211c8ae204d08312f5ae889189086fcdc67d06074502fcf056e90029",
+            "runtime_bytecode": "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",
+            "updated_at": 1523374095108,
+            "source_map": "26:1709:0:-;;;;;;;;;;;;;;;;;",
+            "source_map_runtime": "26:1709:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1037:72;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;667:87;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1218:64;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;278:68;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1490:82;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1037:72;1101:4;1037:72;;;;:::o;667:87::-;746:4;667:87;;;;;:::o;1218:64::-;1274:4;1218:64;;;:::o;278:68::-;338:4;278:68;;;;:::o;1490:82::-;1564:4;1490:82;;;;:::o",
+            "sources": [
+                "src/contracts/current/tokens/Token/Token.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/TokenRegistry.json b/packages/contracts/src/artifacts/TokenRegistry.json
new file mode 100644
index 000000000..475da47c5
--- /dev/null
+++ b/packages/contracts/src/artifacts/TokenRegistry.json
@@ -0,0 +1,562 @@
+{
+    "contract_name": "TokenRegistry",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0x2ff7351f8fdae20562e116b42e3ec236c656ac1af71f7a62c8591627444bce40",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_index",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "removeToken",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_name",
+                            "type": "string"
+                        }
+                    ],
+                    "name": "getTokenAddressByName",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_symbol",
+                            "type": "string"
+                        }
+                    ],
+                    "name": "getTokenAddressBySymbol",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_swarmHash",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "setTokenSwarmHash",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_token",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "getTokenMetaData",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        },
+                        {
+                            "name": "",
+                            "type": "string"
+                        },
+                        {
+                            "name": "",
+                            "type": "string"
+                        },
+                        {
+                            "name": "",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "",
+                            "type": "bytes"
+                        },
+                        {
+                            "name": "",
+                            "type": "bytes"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "owner",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_name",
+                            "type": "string"
+                        },
+                        {
+                            "name": "_symbol",
+                            "type": "string"
+                        },
+                        {
+                            "name": "_decimals",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "_ipfsHash",
+                            "type": "bytes"
+                        },
+                        {
+                            "name": "_swarmHash",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "addToken",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_name",
+                            "type": "string"
+                        }
+                    ],
+                    "name": "setTokenName",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "tokens",
+                    "outputs": [
+                        {
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "name",
+                            "type": "string"
+                        },
+                        {
+                            "name": "symbol",
+                            "type": "string"
+                        },
+                        {
+                            "name": "decimals",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "ipfsHash",
+                            "type": "bytes"
+                        },
+                        {
+                            "name": "swarmHash",
+                            "type": "bytes"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "tokenAddresses",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_name",
+                            "type": "string"
+                        }
+                    ],
+                    "name": "getTokenByName",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        },
+                        {
+                            "name": "",
+                            "type": "string"
+                        },
+                        {
+                            "name": "",
+                            "type": "string"
+                        },
+                        {
+                            "name": "",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "",
+                            "type": "bytes"
+                        },
+                        {
+                            "name": "",
+                            "type": "bytes"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "getTokenAddresses",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_ipfsHash",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "setTokenIpfsHash",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_symbol",
+                            "type": "string"
+                        }
+                    ],
+                    "name": "getTokenBySymbol",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        },
+                        {
+                            "name": "",
+                            "type": "string"
+                        },
+                        {
+                            "name": "",
+                            "type": "string"
+                        },
+                        {
+                            "name": "",
+                            "type": "uint8"
+                        },
+                        {
+                            "name": "",
+                            "type": "bytes"
+                        },
+                        {
+                            "name": "",
+                            "type": "bytes"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_symbol",
+                            "type": "string"
+                        }
+                    ],
+                    "name": "setTokenSymbol",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "newOwner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "transferOwnership",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "name",
+                            "type": "string"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "symbol",
+                            "type": "string"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "decimals",
+                            "type": "uint8"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "ipfsHash",
+                            "type": "bytes"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "swarmHash",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "LogAddToken",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "name",
+                            "type": "string"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "symbol",
+                            "type": "string"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "decimals",
+                            "type": "uint8"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "ipfsHash",
+                            "type": "bytes"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "swarmHash",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "LogRemoveToken",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "oldName",
+                            "type": "string"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "newName",
+                            "type": "string"
+                        }
+                    ],
+                    "name": "LogTokenNameChange",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "oldSymbol",
+                            "type": "string"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "newSymbol",
+                            "type": "string"
+                        }
+                    ],
+                    "name": "LogTokenSymbolChange",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "oldIpfsHash",
+                            "type": "bytes"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "newIpfsHash",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "LogTokenIpfsHashChange",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "oldSwarmHash",
+                            "type": "bytes"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "newSwarmHash",
+                            "type": "bytes"
+                        }
+                    ],
+                    "name": "LogTokenSwarmHashChange",
+                    "type": "event"
+                }
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+            "sources": [
+                "src/contracts/current/protocol/TokenRegistry/TokenRegistry.sol",
+                "src/contracts/previous/Ownable/Ownable_v1.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/TokenTransferProxy.json b/packages/contracts/src/artifacts/TokenTransferProxy.json
new file mode 100644
index 000000000..f6f44a941
--- /dev/null
+++ b/packages/contracts/src/artifacts/TokenTransferProxy.json
@@ -0,0 +1,195 @@
+{
+    "contract_name": "TokenTransferProxy",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0xdf01ff6605f16387ea2d3e043c6bce5d2f6661f23b4243d3783e0ede0e5dfa1d",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "token",
+                            "type": "address"
+                        },
+                        {
+                            "name": "from",
+                            "type": "address"
+                        },
+                        {
+                            "name": "to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transferFrom",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "target",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "addAuthorizedAddress",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "authorities",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "target",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "removeAuthorizedAddress",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "owner",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "authorized",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "getAuthorizedAddresses",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "address[]"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "newOwner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "transferOwnership",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "target",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "caller",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "LogAuthorizedAddressAdded",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "target",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "caller",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "LogAuthorizedAddressRemoved",
+                    "type": "event"
+                }
+            ],
+            "bytecode": "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",
+            "runtime_bytecode": "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",
+            "updated_at": 1523374096248,
+            "source_map": "974:2475:0:-;;;290:10:1;282:5;;:18;;;;;;;;;;;;;;;;;;974:2475:0;;;;;;",
+            "source_map_runtime": "974:2475:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2929:239;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1776:250;;;;;;;;;;;;;;;;;;;;;;;;;;;;1448:28;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2140:476;;;;;;;;;;;;;;;;;;;;;;;;;;;;223:20:1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1399:43:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;3314:133;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;52:2;49:1;45:10;40:15;;8:100;;;12:14;3314:133:0;;;;;;;;;;;;;;;;;396:140:1;;;;;;;;;;;;;;;;;;;;;;;;;;;;2929:239:0;3092:4;1142:10;:22;1153:10;1142:22;;;;;;;;;;;;;;;;;;;;;;;;;1134:31;;;;;;;;3125:5;3119:25;;;3145:4;3151:2;3155:5;3119:42;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;3112:49;;2929:239;;;;;;:::o;1776:250::-;366:5:1;;;;;;;;;;;352:19;;:10;:19;;;344:28;;;;;;;;1883:6:0;1356:10;:18;1367:6;1356:18;;;;;;;;;;;;;;;;;;;;;;;;;1355:19;1347:28;;;;;;;;1926:4;1905:10;:18;1916:6;1905:18;;;;;;;;;;;;;;;;:25;;;;;;;;;;;;;;;;;;1940:11;:24;;;;;;;;;;;:::i;:::-;;;;;;;;;;1957:6;1940:24;;;;;;;;;;;;;;;;;;;;;;;2008:10;1974:45;;2000:6;1974:45;;;;;;;;;;;;382:1:1;1776:250:0;:::o;1448:28::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o;2140:476::-;2309:6;366:5:1;;;;;;;;;;;352:19;;:10;:19;;;344:28;;;;;;;;2247:6:0;1249:10;:18;1260:6;1249:18;;;;;;;;;;;;;;;;;;;;;;;;;1241:27;;;;;;;;2276:10;:18;2287:6;2276:18;;;;;;;;;;;;;;;;2269:25;;;;;;;;;;;2318:1;2309:10;;2304:249;2325:11;:18;;;;2321:1;:22;2304:249;;;2386:6;2368:24;;:11;2380:1;2368:14;;;;;;;;;;;;;;;;;;;;;;;;;;;;:24;;;2364:179;;;2429:11;2462:1;2441:11;:18;;;;:22;2429:35;;;;;;;;;;;;;;;;;;;;;;;;;;;;2412:11;2424:1;2412:14;;;;;;;;;;;;;;;;;;;:52;;;;;;;;;;;;;;;;;;2504:1;2482:11;:23;;;;;;;;;;;;;;:::i;:::-;;2523:5;;2364:179;2345:3;;;;;;;2304:249;;;2598:10;2562:47;;2590:6;2562:47;;;;;;;;;;;;382:1:1;2140:476:0;;:::o;223:20:1:-;;;;;;;;;;;;;:::o;1399:43:0:-;;;;;;;;;;;;;;;;;;;;;;:::o;3314:133::-;3397:9;;:::i;:::-;3429:11;3422:18;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;3314:133;:::o;396:140:1:-;366:5;;;;;;;;;;;352:19;;:10;:19;;;344:28;;;;;;;;485:1;465:22;;:8;:22;;;;461:69;;;511:8;503:5;;:16;;;;;;;;;;;;;;;;;;461:69;396:140;:::o;974:2475:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;;;;:::o;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;;;;:::o;:::-;;;;;;;;;;;;;;;:::o;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o",
+            "sources": [
+                "src/contracts/current/protocol/TokenTransferProxy/TokenTransferProxy.sol",
+                "src/contracts/previous/Ownable/Ownable_v1.sol",
+                "src/contracts/previous/Token/Token_v1.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/WETH9.json b/packages/contracts/src/artifacts/WETH9.json
new file mode 100644
index 000000000..ac3057375
--- /dev/null
+++ b/packages/contracts/src/artifacts/WETH9.json
@@ -0,0 +1,297 @@
+{
+    "contract_name": "WETH9",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0xce985174db1a24d312c0d544abb926a9b107bd9abd6424288a8e54a16d3e006b",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "name",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "string"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "guy",
+                            "type": "address"
+                        },
+                        {
+                            "name": "wad",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "approve",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "totalSupply",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "src",
+                            "type": "address"
+                        },
+                        {
+                            "name": "dst",
+                            "type": "address"
+                        },
+                        {
+                            "name": "wad",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transferFrom",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "wad",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "withdraw",
+                    "outputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "decimals",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint8"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "balanceOf",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "symbol",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "string"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "dst",
+                            "type": "address"
+                        },
+                        {
+                            "name": "wad",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transfer",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [],
+                    "name": "deposit",
+                    "outputs": [],
+                    "payable": true,
+                    "stateMutability": "payable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "",
+                            "type": "address"
+                        },
+                        {
+                            "name": "",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "allowance",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "payable": true,
+                    "stateMutability": "payable",
+                    "type": "fallback"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "src",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "guy",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "wad",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Approval",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "src",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "dst",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "wad",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Transfer",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "dst",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "wad",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Deposit",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "src",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "wad",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Withdrawal",
+                    "type": "event"
+                }
+            ],
+            "bytecode": 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+            "updated_at": 1523374095682,
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+            "sources": [
+                "src/contracts/current/tokens/WETH9/WETH9.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/contracts/src/artifacts/ZRXToken.json b/packages/contracts/src/artifacts/ZRXToken.json
new file mode 100644
index 000000000..c78a7bd8a
--- /dev/null
+++ b/packages/contracts/src/artifacts/ZRXToken.json
@@ -0,0 +1,244 @@
+{
+    "contract_name": "ZRXToken",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.21",
+            "source_tree_hash": "0xa2899bdb1c73e3ea6e53dc3f6a150b74f770578765c3f35ce41b912024eef73a",
+            "optimizer_enabled": false,
+            "abi": [
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "name",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "string"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_spender",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "approve",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "totalSupply",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_from",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transferFrom",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "decimals",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint8"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_owner",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "balanceOf",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [],
+                    "name": "symbol",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "string"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "constant": false,
+                    "inputs": [
+                        {
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "transfer",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "bool"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                },
+                {
+                    "constant": true,
+                    "inputs": [
+                        {
+                            "name": "_owner",
+                            "type": "address"
+                        },
+                        {
+                            "name": "_spender",
+                            "type": "address"
+                        }
+                    ],
+                    "name": "allowance",
+                    "outputs": [
+                        {
+                            "name": "",
+                            "type": "uint256"
+                        }
+                    ],
+                    "payable": false,
+                    "stateMutability": "view",
+                    "type": "function"
+                },
+                {
+                    "inputs": [],
+                    "payable": false,
+                    "stateMutability": "nonpayable",
+                    "type": "constructor"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "_from",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "_to",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Transfer",
+                    "type": "event"
+                },
+                {
+                    "anonymous": false,
+                    "inputs": [
+                        {
+                            "indexed": true,
+                            "name": "_owner",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": true,
+                            "name": "_spender",
+                            "type": "address"
+                        },
+                        {
+                            "indexed": false,
+                            "name": "_value",
+                            "type": "uint256"
+                        }
+                    ],
+                    "name": "Approval",
+                    "type": "event"
+                }
+            ],
+            "bytecode": "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+            "runtime_bytecode": "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",
+            "updated_at": 1523374094820,
+            "source_map": "753:342:0:-;;;872:6;846:32;;1022:71;;;;;;;;1075:11;;1052:8;:20;1061:10;1052:20;;;;;;;;;;;;;;;:34;;;;753:342;;;;;;",
+            "source_map_runtime": "753:342:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;923:49;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;52:2;49:1;45:10;40:15;;8:100;;;12:14;923:49:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1087:187:1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;846:32:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1066:609:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;805:35:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;982:99:1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;978:37:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;52:2;49:1;45:10;40:15;;8:100;;;12:14;978:37:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;125:410:1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1280:126;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;923:49:0;;;;;;;;;;;;;;;;;;;;:::o;1087:187:1:-;1144:4;1192:6;1160:7;:19;1168:10;1160:19;;;;;;;;;;;;;;;:29;1180:8;1160:29;;;;;;;;;;;;;;;:38;;;;1229:8;1208:38;;1217:10;1208:38;;;1239:6;1208:38;;;;;;;;;;;;;;;;;;1263:4;1256:11;;1087:187;;;;:::o;846:32:0:-;;;;:::o;1066:609:3:-;1161:4;1181:14;1198:7;:14;1206:5;1198:14;;;;;;;;;;;;;;;:26;1213:10;1198:26;;;;;;;;;;;;;;;;1181:43;;1257:6;1238:8;:15;1247:5;1238:15;;;;;;;;;;;;;;;;:25;;:60;;;;;1292:6;1279:9;:19;;1238:60;:115;;;;;1340:8;:13;1349:3;1340:13;;;;;;;;;;;;;;;;1330:6;1314:8;:13;1323:3;1314:13;;;;;;;;;;;;;;;;:22;:39;;1238:115;1234:435;;;1395:6;1378:8;:13;1387:3;1378:13;;;;;;;;;;;;;;;;:23;;;;;;;;;;;1434:6;1415:8;:15;1424:5;1415:15;;;;;;;;;;;;;;;;:25;;;;;;;;;;;768:10;1458:9;:20;1454:95;;;1528:6;1498:7;:14;1506:5;1498:14;;;;;;;;;;;;;;;:26;1513:10;1498:26;;;;;;;;;;;;;;;;:36;;;;;;;;;;;1454:95;1578:3;1562:28;;1571:5;1562:28;;;1583:6;1562:28;;;;;;;;;;;;;;;;;;1611:4;1604:11;;;;1234:435;1653:5;1646:12;;1066:609;;;;;;;:::o;805:35:0:-;838:2;805:35;:::o;982:99:1:-;1035:4;1058:8;:16;1067:6;1058:16;;;;;;;;;;;;;;;;1051:23;;982:99;;;:::o;978:37:0:-;;;;;;;;;;;;;;;;;;;;:::o;125:410:1:-;178:4;291:6;267:8;:20;276:10;267:20;;;;;;;;;;;;;;;;:30;;:73;;;;;327:8;:13;336:3;327:13;;;;;;;;;;;;;;;;317:6;301:8;:13;310:3;301:13;;;;;;;;;;;;;;;;:22;:39;;267:73;263:266;;;380:6;356:8;:20;365:10;356:20;;;;;;;;;;;;;;;;:30;;;;;;;;;;;417:6;400:8;:13;409:3;400:13;;;;;;;;;;;;;;;;:23;;;;;;;;;;;458:3;437:33;;446:10;437:33;;;463:6;437:33;;;;;;;;;;;;;;;;;;491:4;484:11;;;;263:266;521:5;514:12;;125:410;;;;;:::o;1280:126::-;1351:4;1374:7;:15;1382:6;1374:15;;;;;;;;;;;;;;;:25;1390:8;1374:25;;;;;;;;;;;;;;;;1367:32;;1280:126;;;;:::o",
+            "sources": [
+                "src/contracts/current/tokens/ZRXToken/ZRXToken.sol",
+                "src/contracts/previous/ERC20Token/ERC20Token_v1.sol",
+                "src/contracts/previous/Token/Token_v1.sol",
+                "src/contracts/previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol"
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/deployer/package.json b/packages/deployer/package.json
index 6afaa13b3..ef5c1cd16 100644
--- a/packages/deployer/package.json
+++ b/packages/deployer/package.json
@@ -53,7 +53,6 @@
         "@types/require-from-string": "^1.2.0",
         "@types/semver": "^5.5.0",
         "chai": "^4.0.1",
-        "chai-as-promised": "^7.1.0",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
         "mocha": "^4.0.1",
diff --git a/packages/deployer/src/cli.ts b/packages/deployer/src/cli.ts
index 7b32187c4..f1cf56416 100644
--- a/packages/deployer/src/cli.ts
+++ b/packages/deployer/src/cli.ts
@@ -11,7 +11,7 @@ import * as yargs from 'yargs';
 import { commands } from './commands';
 import { constants } from './utils/constants';
 import { consoleReporter } from './utils/error_reporter';
-import { CliOptions, CompilerOptions, ContractDirectory, DeployerOptions } from './utils/types';
+import { CliOptions, CompilerOptions, DeployerOptions } from './utils/types';
 
 const DEFAULT_OPTIMIZER_ENABLED = false;
 const DEFAULT_CONTRACTS_DIR = path.resolve('src/contracts');
@@ -27,7 +27,7 @@ const DEFAULT_CONTRACTS_LIST = '*';
  */
 async function onCompileCommandAsync(argv: CliOptions): Promise<void> {
     const opts: CompilerOptions = {
-        contractDirs: getContractDirectoriesFromList(argv.contractDirs),
+        contractsDir: argv.contractsDir,
         networkId: argv.networkId,
         optimizerEnabled: argv.shouldOptimize,
         artifactsDir: argv.artifactsDir,
@@ -45,7 +45,7 @@ async function onDeployCommandAsync(argv: CliOptions): Promise<void> {
     const web3Wrapper = new Web3Wrapper(provider);
     const networkId = await web3Wrapper.getNetworkIdAsync();
     const compilerOpts: CompilerOptions = {
-        contractDirs: getContractDirectoriesFromList(argv.contractDirs),
+        contractsDir: argv.contractsDir,
         networkId,
         optimizerEnabled: argv.shouldOptimize,
         artifactsDir: argv.artifactsDir,
@@ -69,29 +69,6 @@ async function onDeployCommandAsync(argv: CliOptions): Promise<void> {
 }
 /**
  * Creates a set of contracts to compile.
- * @param contractDirectoriesList Comma separated list of contract directories
- * @return Set of contract directories
- */
-function getContractDirectoriesFromList(contractDirectoriesList: string): Set<ContractDirectory> {
-    const directories = new Set();
-    const possiblyNamespacedDirectories = contractDirectoriesList.split(',');
-    _.forEach(possiblyNamespacedDirectories, namespacedDirectory => {
-        const directoryComponents = namespacedDirectory.split(':');
-        if (directoryComponents.length === 1) {
-            const directory = { namespace: '', path: directoryComponents[0] };
-            directories.add(directory);
-        } else if (directoryComponents.length === 2) {
-            const directory = { namespace: directoryComponents[0], path: directoryComponents[1] };
-            directories.add(directory);
-        } else {
-            throw new Error(`Unable to parse contracts directory: '${namespacedDirectory}'`);
-        }
-    });
-
-    return directories;
-}
-/**
- * Creates a set of contracts to compile.
  * @param contracts Comma separated list of contracts to compile
  */
 function getContractsSetFromList(contracts: string): Set<string> {
@@ -101,7 +78,8 @@ function getContractsSetFromList(contracts: string): Set<string> {
     }
     const contractsArray = contracts.split(',');
     _.forEach(contractsArray, contractName => {
-        specifiedContracts.add(contractName);
+        const fileName = `${contractName}${constants.SOLIDITY_FILE_EXTENSION}`;
+        specifiedContracts.add(fileName);
     });
     return specifiedContracts;
 }
@@ -126,11 +104,10 @@ function deployCommandBuilder(yargsInstance: any) {
 (() => {
     const identityCommandBuilder = _.identity;
     return yargs
-        .option('contract-dirs', {
+        .option('contracts-dir', {
             type: 'string',
             default: DEFAULT_CONTRACTS_DIR,
-            description:
-                "comma separated list of contract directories.\nTo avoid filename clashes, directories should be prefixed with a namespace as follows: 'namespace:/path/to/dir'.",
+            description: 'path of contracts directory to compile',
         })
         .option('network-id', {
             type: 'number',
diff --git a/packages/deployer/src/compiler.ts b/packages/deployer/src/compiler.ts
index e3ecc6c72..ba360cb57 100644
--- a/packages/deployer/src/compiler.ts
+++ b/packages/deployer/src/compiler.ts
@@ -1,4 +1,4 @@
-import { AbiType, ContractAbi, MethodAbi } from '@0xproject/types';
+import { ContractAbi } from '@0xproject/types';
 import { logUtils, promisify } from '@0xproject/utils';
 import * as ethUtil from 'ethereumjs-util';
 import * as fs from 'fs';
@@ -11,8 +11,6 @@ import solc = require('solc');
 
 import { binPaths } from './solc/bin_paths';
 import {
-    constructContractId,
-    constructUniqueSourceFileId,
     createDirIfDoesNotExistAsync,
     findImportIfExist,
     getContractArtifactIfExistsAsync,
@@ -25,14 +23,11 @@ import { fsWrapper } from './utils/fs_wrapper';
 import {
     CompilerOptions,
     ContractArtifact,
-    ContractDirectory,
-    ContractIdToSourceFileId,
     ContractNetworkData,
     ContractNetworks,
-    ContractSourceDataByFileId,
+    ContractSourceData,
     ContractSources,
     ContractSpecificSourceData,
-    FunctionNameToSeenCount,
 } from './utils/types';
 import { utils } from './utils/utils';
 
@@ -44,22 +39,20 @@ const SOLC_BIN_DIR = path.join(__dirname, '..', '..', 'solc_bin');
  * to artifact files.
  */
 export class Compiler {
-    private _contractDirs: Set<ContractDirectory>;
+    private _contractsDir: string;
     private _networkId: number;
     private _optimizerEnabled: boolean;
     private _artifactsDir: string;
     // This get's set in the beggining of `compileAsync` function. It's not called from a constructor, but it's the only public method of that class and could as well be.
     private _contractSources!: ContractSources;
     private _specifiedContracts: Set<string> = new Set();
-    private _contractSourceDataByFileId: ContractSourceDataByFileId = {};
-
+    private _contractSourceData: ContractSourceData = {};
     /**
      * Recursively retrieves Solidity source code from directory.
      * @param  dirPath Directory to search.
-     * @param  contractBaseDir Base contracts directory of search tree.
-     * @return Mapping of sourceFilePath to the contract source.
+     * @return Mapping of contract fileName to contract source.
      */
-    private static async _getContractSourcesAsync(dirPath: string, contractBaseDir: string): Promise<ContractSources> {
+    private static async _getContractSourcesAsync(dirPath: string): Promise<ContractSources> {
         let dirContents: string[] = [];
         try {
             dirContents = await fsWrapper.readdirAsync(dirPath);
@@ -75,18 +68,14 @@ export class Compiler {
                         encoding: 'utf8',
                     };
                     const source = await fsWrapper.readFileAsync(contentPath, opts);
-                    if (!_.startsWith(contentPath, contractBaseDir)) {
-                        throw new Error(`Expected content path '${contentPath}' to begin with '${contractBaseDir}'`);
-                    }
-                    const sourceFilePath = contentPath.slice(contractBaseDir.length);
-                    sources[sourceFilePath] = source;
-                    logUtils.log(`Reading ${sourceFilePath} source...`);
+                    sources[fileName] = source;
+                    logUtils.log(`Reading ${fileName} source...`);
                 } catch (err) {
                     logUtils.log(`Could not find file at ${contentPath}`);
                 }
             } else {
                 try {
-                    const nestedSources = await Compiler._getContractSourcesAsync(contentPath, contractBaseDir);
+                    const nestedSources = await Compiler._getContractSourcesAsync(contentPath);
                     sources = {
                         ...sources,
                         ...nestedSources,
@@ -104,7 +93,7 @@ export class Compiler {
      * @return An instance of the Compiler class.
      */
     constructor(opts: CompilerOptions) {
-        this._contractDirs = opts.contractDirs;
+        this._contractsDir = opts.contractsDir;
         this._networkId = opts.networkId;
         this._optimizerEnabled = opts.optimizerEnabled;
         this._artifactsDir = opts.artifactsDir;
@@ -116,49 +105,25 @@ export class Compiler {
     public async compileAsync(): Promise<void> {
         await createDirIfDoesNotExistAsync(this._artifactsDir);
         await createDirIfDoesNotExistAsync(SOLC_BIN_DIR);
-        this._contractSources = {};
-        const contractIdToSourceFileId: ContractIdToSourceFileId = {};
-        const contractDirs = Array.from(this._contractDirs.values());
-        for (const contractDir of contractDirs) {
-            const sources = await Compiler._getContractSourcesAsync(contractDir.path, contractDir.path);
-            _.forIn(sources, (source, sourceFilePath) => {
-                const sourceFileId = constructUniqueSourceFileId(contractDir.namespace, sourceFilePath);
-                // Record the file's source and data
-                if (!_.isUndefined(this._contractSources[sourceFileId])) {
-                    throw new Error(`Found duplicate source files with ID '${sourceFileId}'`);
-                }
-                this._contractSources[sourceFileId] = source;
-                // Create a mapping between the contract id and its source file id
-                const contractId = constructContractId(contractDir.namespace, sourceFilePath);
-                if (!_.isUndefined(contractIdToSourceFileId[contractId])) {
-                    throw new Error(`Found duplicate contract with ID '${contractId}'`);
-                }
-                contractIdToSourceFileId[contractId] = sourceFileId;
-            });
-        }
+        this._contractSources = await Compiler._getContractSourcesAsync(this._contractsDir);
         _.forIn(this._contractSources, this._setContractSpecificSourceData.bind(this));
-        const specifiedContractIds = this._specifiedContracts.has(ALL_CONTRACTS_IDENTIFIER)
-            ? _.keys(contractIdToSourceFileId)
+        const fileNames = this._specifiedContracts.has(ALL_CONTRACTS_IDENTIFIER)
+            ? _.keys(this._contractSources)
             : Array.from(this._specifiedContracts.values());
-        await Promise.all(
-            _.map(specifiedContractIds, async contractId =>
-                this._compileContractAsync(contractIdToSourceFileId[contractId]),
-            ),
-        );
+        for (const fileName of fileNames) {
+            await this._compileContractAsync(fileName);
+        }
     }
     /**
      * Compiles contract and saves artifact to artifactsDir.
-     * @param sourceFileId Unique ID of the source file.
+     * @param fileName Name of contract with '.sol' extension.
      */
-    private async _compileContractAsync(sourceFileId: string): Promise<void> {
+    private async _compileContractAsync(fileName: string): Promise<void> {
         if (_.isUndefined(this._contractSources)) {
             throw new Error('Contract sources not yet initialized');
         }
-        if (_.isUndefined(this._contractSourceDataByFileId[sourceFileId])) {
-            throw new Error(`Contract source for ${sourceFileId} not yet initialized`);
-        }
-        const contractSpecificSourceData = this._contractSourceDataByFileId[sourceFileId];
-        const currentArtifactIfExists = await getContractArtifactIfExistsAsync(this._artifactsDir, sourceFileId);
+        const contractSpecificSourceData = this._contractSourceData[fileName];
+        const currentArtifactIfExists = await getContractArtifactIfExistsAsync(this._artifactsDir, fileName);
         const sourceHash = `0x${contractSpecificSourceData.sourceHash.toString('hex')}`;
         const sourceTreeHash = `0x${contractSpecificSourceData.sourceTreeHash.toString('hex')}`;
 
@@ -197,17 +162,16 @@ export class Compiler {
         }
         const solcInstance = solc.setupMethods(requireFromString(solcjs, compilerBinFilename));
 
-        logUtils.log(`Compiling ${sourceFileId} with Solidity v${solcVersion}...`);
-        const source = this._contractSources[sourceFileId];
+        logUtils.log(`Compiling ${fileName} with Solidity v${solcVersion}...`);
+        const source = this._contractSources[fileName];
         const input = {
-            [sourceFileId]: source,
+            [fileName]: source,
         };
         const sourcesToCompile = {
             sources: input,
         };
-
         const compiled = solcInstance.compile(sourcesToCompile, Number(this._optimizerEnabled), importPath =>
-            findImportIfExist(this._contractSources, sourceFileId, importPath),
+            findImportIfExist(this._contractSources, importPath),
         );
 
         if (!_.isUndefined(compiled.errors)) {
@@ -229,11 +193,11 @@ export class Compiler {
                 });
             }
         }
-        const contractName = path.basename(sourceFileId, constants.SOLIDITY_FILE_EXTENSION);
-        const contractIdentifier = `${sourceFileId}:${contractName}`;
+        const contractName = path.basename(fileName, constants.SOLIDITY_FILE_EXTENSION);
+        const contractIdentifier = `${fileName}:${contractName}`;
         if (_.isUndefined(compiled.contracts[contractIdentifier])) {
             throw new Error(
-                `Contract ${contractName} not found in ${sourceFileId}. Please make sure your contract has the same name as it's file name`,
+                `Contract ${contractName} not found in ${fileName}. Please make sure your contract has the same name as it's file name`,
             );
         }
         const abi: ContractAbi = JSON.parse(compiled.contracts[contractIdentifier].interface);
@@ -243,7 +207,6 @@ export class Compiler {
         const sourceMapRuntime = compiled.contracts[contractIdentifier].srcmapRuntime;
         const sources = _.keys(compiled.sources);
         const updated_at = Date.now();
-
         const contractNetworkData: ContractNetworkData = {
             solc_version: solcVersion,
             keccak256: sourceHash,
@@ -280,30 +243,28 @@ export class Compiler {
         const artifactString = utils.stringifyWithFormatting(newArtifact);
         const currentArtifactPath = `${this._artifactsDir}/${contractName}.json`;
         await fsWrapper.writeFileAsync(currentArtifactPath, artifactString);
-        logUtils.log(`${sourceFileId} artifact saved!`);
+        logUtils.log(`${fileName} artifact saved!`);
     }
     /**
      * Gets contract dependendencies and keccak256 hash from source.
      * @param source Source code of contract.
-     * @param fileId FileId of the contract source file.
      * @return Object with contract dependencies and keccak256 hash of source.
      */
-    private _setContractSpecificSourceData(source: string, fileId: string): void {
-        if (!_.isUndefined(this._contractSourceDataByFileId[fileId])) {
+    private _setContractSpecificSourceData(source: string, fileName: string): void {
+        if (!_.isUndefined(this._contractSourceData[fileName])) {
             return;
         }
         const sourceHash = ethUtil.sha3(source);
         const solcVersionRange = parseSolidityVersionRange(source);
-        const dependencies = parseDependencies(source, fileId);
-        const sourceTreeHash = this._getSourceTreeHash(fileId, sourceHash, dependencies);
-        this._contractSourceDataByFileId[fileId] = {
+        const dependencies = parseDependencies(source);
+        const sourceTreeHash = this._getSourceTreeHash(fileName, sourceHash, dependencies);
+        this._contractSourceData[fileName] = {
             dependencies,
             solcVersionRange,
             sourceHash,
             sourceTreeHash,
         };
     }
-
     /**
      * Gets the source tree hash for a file and its dependencies.
      * @param fileName Name of contract file.
@@ -315,7 +276,7 @@ export class Compiler {
             const dependencySourceTreeHashes = _.map(dependencies, dependency => {
                 const source = this._contractSources[dependency];
                 this._setContractSpecificSourceData(source, dependency);
-                const sourceData = this._contractSourceDataByFileId[dependency];
+                const sourceData = this._contractSourceData[dependency];
                 return this._getSourceTreeHash(dependency, sourceData.sourceHash, sourceData.dependencies);
             });
             const sourceTreeHashesBuffer = Buffer.concat([sourceHash, ...dependencySourceTreeHashes]);
diff --git a/packages/deployer/src/utils/compiler.ts b/packages/deployer/src/utils/compiler.ts
index 600495693..d5137d394 100644
--- a/packages/deployer/src/utils/compiler.ts
+++ b/packages/deployer/src/utils/compiler.ts
@@ -1,4 +1,3 @@
-import { AbiType, ContractAbi, MethodAbi } from '@0xproject/types';
 import { logUtils } from '@0xproject/utils';
 import * as _ from 'lodash';
 import * as path from 'path';
@@ -6,49 +5,9 @@ import * as solc from 'solc';
 
 import { constants } from './constants';
 import { fsWrapper } from './fs_wrapper';
-import { ContractArtifact, ContractSources, FunctionNameToSeenCount } from './types';
+import { ContractArtifact, ContractSources } from './types';
 
 /**
- * Constructs a system-wide unique identifier for a source file.
- * @param directoryNamespace Namespace of the source file's root contract directory.
- * @param sourceFilePath Path to a source file, relative to contractBaseDir.
- * @return sourceFileId A system-wide unique identifier for the source file.
- */
-export function constructUniqueSourceFileId(directoryNamespace: string, sourceFilePath: string): string {
-    const namespacePrefix = !_.isEmpty(directoryNamespace) ? `/${directoryNamespace}` : '';
-    const sourceFilePathNoLeadingSlash = sourceFilePath.replace(/^\/+/g, '');
-    const sourceFileId = `${namespacePrefix}/${sourceFilePathNoLeadingSlash}`;
-    return sourceFileId;
-}
-/**
- * Constructs a system-wide unique identifier for a dependency file.
- * @param dependencyFilePath Path from a sourceFile to a dependency.
- * @param  contractBaseDir Base contracts directory of search tree.
- * @return sourceFileId A system-wide unique identifier for the source file.
- */
-export function constructDependencyFileId(dependencyFilePath: string, sourceFilePath: string): string {
-    if (_.startsWith(dependencyFilePath, '/')) {
-        // Path of the form /namespace/path/to/dependency.sol
-        return dependencyFilePath;
-    } else {
-        // Dependency is relative to the source file: ./dependency.sol, ../../some/path/dependency.sol, etc.
-        // Join the two paths to construct a valid source file id: /namespace/path/to/dependency.sol
-        return path.join(path.dirname(sourceFilePath), dependencyFilePath);
-    }
-}
-/**
- * Constructs a system-wide unique identifier for a contract.
- * @param directoryNamespace Namespace of the source file's root contract directory.
- * @param sourceFilePath Path to a source file, relative to contractBaseDir.
- * @return sourceFileId A system-wide unique identifier for contract.
- */
-export function constructContractId(directoryNamespace: string, sourceFilePath: string): string {
-    const namespacePrefix = !_.isEmpty(directoryNamespace) ? `${directoryNamespace}:` : '';
-    const sourceFileName = path.basename(sourceFilePath, constants.SOLIDITY_FILE_EXTENSION);
-    const contractId = `${namespacePrefix}${sourceFileName}`;
-    return contractId;
-}
-/**
  * Gets contract data on network or returns if an artifact does not exist.
  * @param artifactsDir Path to the artifacts directory.
  * @param fileName Name of contract file.
@@ -123,10 +82,9 @@ export function getNormalizedErrMsg(errMsg: string): string {
 /**
  * Parses the contract source code and extracts the dendencies
  * @param  source Contract source code
- * @param sourceFilePath File path of the source code.
  * @return List of dependendencies
  */
-export function parseDependencies(source: string, sourceFileId: string): string[] {
+export function parseDependencies(source: string): string[] {
     // TODO: Use a proper parser
     const IMPORT_REGEX = /(import\s)/;
     const DEPENDENCY_PATH_REGEX = /"([^"]+)"/; // Source: https://github.com/BlockChainCompany/soljitsu/blob/master/lib/shared.js
@@ -137,8 +95,8 @@ export function parseDependencies(source: string, sourceFileId: string): string[
             const dependencyMatch = line.match(DEPENDENCY_PATH_REGEX);
             if (!_.isNull(dependencyMatch)) {
                 const dependencyPath = dependencyMatch[1];
-                const dependencyId = constructDependencyFileId(dependencyPath, sourceFileId);
-                dependencies.push(dependencyId);
+                const basenName = path.basename(dependencyPath);
+                dependencies.push(basenName);
             }
         }
     });
@@ -149,19 +107,14 @@ export function parseDependencies(source: string, sourceFileId: string): string[
  * Callback to resolve dependencies with `solc.compile`.
  * Throws error if contractSources not yet initialized.
  * @param  contractSources Source codes of contracts.
- * @param  sourceFileId ID of the source file.
- * @param  importPath Path of dependency source file.
+ * @param  importPath Path to an imported dependency.
  * @return Import contents object containing source code of dependency.
  */
-export function findImportIfExist(
-    contractSources: ContractSources,
-    sourceFileId: string,
-    importPath: string,
-): solc.ImportContents {
-    const dependencyFileId = constructDependencyFileId(importPath, sourceFileId);
-    const source = contractSources[dependencyFileId];
+export function findImportIfExist(contractSources: ContractSources, importPath: string): solc.ImportContents {
+    const fileName = path.basename(importPath);
+    const source = contractSources[fileName];
     if (_.isUndefined(source)) {
-        throw new Error(`Contract source not found for ${dependencyFileId}`);
+        throw new Error(`Contract source not found for ${fileName}`);
     }
     const importContents: solc.ImportContents = {
         contents: source,
diff --git a/packages/deployer/src/utils/contract.ts b/packages/deployer/src/utils/contract.ts
index e8dd5218a..9b7baac11 100644
--- a/packages/deployer/src/utils/contract.ts
+++ b/packages/deployer/src/utils/contract.ts
@@ -1,9 +1,11 @@
 import { schemas, SchemaValidator } from '@0xproject/json-schemas';
-import { AbiType, ContractAbi, EventAbi, FunctionAbi, MethodAbi, TxData } from '@0xproject/types';
+import { ContractAbi, EventAbi, FunctionAbi, MethodAbi, TxData } from '@0xproject/types';
 import { promisify } from '@0xproject/utils';
 import * as _ from 'lodash';
 import * as Web3 from 'web3';
 
+import { AbiType } from './types';
+
 export class Contract implements Web3.ContractInstance {
     public address: string;
     public abi: ContractAbi;
diff --git a/packages/deployer/src/utils/encoder.ts b/packages/deployer/src/utils/encoder.ts
index 806efbbca..4f62662e1 100644
--- a/packages/deployer/src/utils/encoder.ts
+++ b/packages/deployer/src/utils/encoder.ts
@@ -1,7 +1,9 @@
-import { AbiDefinition, AbiType, ContractAbi, DataItem } from '@0xproject/types';
+import { AbiDefinition, ContractAbi, DataItem } from '@0xproject/types';
 import * as _ from 'lodash';
 import * as web3Abi from 'web3-eth-abi';
 
+import { AbiType } from './types';
+
 export const encoder = {
     encodeConstructorArgsFromAbi(args: any[], abi: ContractAbi): string {
         const constructorTypes: string[] = [];
diff --git a/packages/deployer/src/utils/types.ts b/packages/deployer/src/utils/types.ts
index 1a866b873..7d131f5ce 100644
--- a/packages/deployer/src/utils/types.ts
+++ b/packages/deployer/src/utils/types.ts
@@ -18,11 +18,6 @@ export interface ContractNetworks {
     [key: number]: ContractNetworkData;
 }
 
-export interface ContractDirectory {
-    path: string;
-    namespace: string;
-}
-
 export interface ContractNetworkData {
     solc_version: string;
     optimizer_enabled: boolean;
@@ -45,7 +40,7 @@ export interface SolcErrors {
 
 export interface CliOptions extends yargs.Arguments {
     artifactsDir: string;
-    contractDirs: string;
+    contractsDir: string;
     jsonrpcUrl: string;
     networkId: number;
     shouldOptimize: boolean;
@@ -56,7 +51,7 @@ export interface CliOptions extends yargs.Arguments {
 }
 
 export interface CompilerOptions {
-    contractDirs: Set<ContractDirectory>;
+    contractsDir: string;
     networkId: number;
     optimizerEnabled: boolean;
     artifactsDir: string;
@@ -83,11 +78,7 @@ export interface ContractSources {
     [key: string]: string;
 }
 
-export interface ContractIdToSourceFileId {
-    [key: string]: string;
-}
-
-export interface ContractSourceDataByFileId {
+export interface ContractSourceData {
     [key: string]: ContractSpecificSourceData;
 }
 
@@ -107,8 +98,4 @@ export interface Token {
     swarmHash: string;
 }
 
-export interface FunctionNameToSeenCount {
-    [key: string]: number;
-}
-
 export type DoneCallback = (err?: Error) => void;
diff --git a/packages/deployer/test/compiler_test.ts b/packages/deployer/test/compiler_test.ts
index 817a3b3f9..b03ae7935 100644
--- a/packages/deployer/test/compiler_test.ts
+++ b/packages/deployer/test/compiler_test.ts
@@ -3,13 +3,7 @@ import 'mocha';
 
 import { Compiler } from '../src/compiler';
 import { fsWrapper } from '../src/utils/fs_wrapper';
-import {
-    CompilerOptions,
-    ContractArtifact,
-    ContractDirectory,
-    ContractNetworkData,
-    DoneCallback,
-} from '../src/utils/types';
+import { CompilerOptions, ContractArtifact, ContractNetworkData, DoneCallback } from '../src/utils/types';
 
 import { exchange_binary } from './fixtures/exchange_bin';
 import { constants } from './util/constants';
@@ -19,15 +13,11 @@ const expect = chai.expect;
 describe('#Compiler', function() {
     this.timeout(constants.timeoutMs);
     const artifactsDir = `${__dirname}/fixtures/artifacts`;
-    const mainContractDir: ContractDirectory = { path: `${__dirname}/fixtures/contracts/main`, namespace: 'main' };
-    const baseContractDir: ContractDirectory = { path: `${__dirname}/fixtures/contracts/base`, namespace: 'base' };
-    const contractDirs: Set<ContractDirectory> = new Set();
-    contractDirs.add(mainContractDir);
-    contractDirs.add(baseContractDir);
+    const contractsDir = `${__dirname}/fixtures/contracts`;
     const exchangeArtifactPath = `${artifactsDir}/Exchange.json`;
     const compilerOpts: CompilerOptions = {
         artifactsDir,
-        contractDirs,
+        contractsDir,
         networkId: constants.networkId,
         optimizerEnabled: constants.optimizerEnabled,
         specifiedContracts: new Set(constants.specifiedContracts),
diff --git a/packages/deployer/test/compiler_utils_test.ts b/packages/deployer/test/compiler_utils_test.ts
index 5377d3308..246304858 100644
--- a/packages/deployer/test/compiler_utils_test.ts
+++ b/packages/deployer/test/compiler_utils_test.ts
@@ -47,34 +47,28 @@ describe('Compiler utils', () => {
     });
     describe('#parseDependencies', () => {
         it('correctly parses Exchange dependencies', async () => {
-            const exchangeSource = await fsWrapper.readFileAsync(`${__dirname}/fixtures/contracts/main/Exchange.sol`, {
+            const exchangeSource = await fsWrapper.readFileAsync(`${__dirname}/fixtures/contracts/Exchange.sol`, {
                 encoding: 'utf8',
             });
-            const sourceFileId = '/main/Exchange.sol';
-            expect(parseDependencies(exchangeSource, sourceFileId)).to.be.deep.equal([
-                '/main/TokenTransferProxy.sol',
-                '/base/Token.sol',
-                '/base/SafeMath.sol',
+            expect(parseDependencies(exchangeSource)).to.be.deep.equal([
+                'TokenTransferProxy.sol',
+                'Token.sol',
+                'SafeMath.sol',
             ]);
         });
         it('correctly parses TokenTransferProxy dependencies', async () => {
             const exchangeSource = await fsWrapper.readFileAsync(
-                `${__dirname}/fixtures/contracts/main/TokenTransferProxy.sol`,
+                `${__dirname}/fixtures/contracts/TokenTransferProxy.sol`,
                 {
                     encoding: 'utf8',
                 },
             );
-            const sourceFileId = '/main/TokenTransferProxy.sol';
-            expect(parseDependencies(exchangeSource, sourceFileId)).to.be.deep.equal([
-                '/base/Token.sol',
-                '/base/Ownable.sol',
-            ]);
+            expect(parseDependencies(exchangeSource)).to.be.deep.equal(['Token.sol', 'Ownable.sol']);
         });
         // TODO: For now that doesn't work. This will work after we switch to a grammar-based parser
         it.skip('correctly parses commented out dependencies', async () => {
             const contractWithCommentedOutDependencies = `// import "./TokenTransferProxy.sol";`;
-            const sourceFileId = '/main/TokenTransferProxy.sol';
-            expect(parseDependencies(contractWithCommentedOutDependencies, sourceFileId)).to.be.deep.equal([]);
+            expect(parseDependencies(contractWithCommentedOutDependencies)).to.be.deep.equal([]);
         });
     });
 });
diff --git a/packages/deployer/test/deployer_test.ts b/packages/deployer/test/deployer_test.ts
index a213932f9..238624220 100644
--- a/packages/deployer/test/deployer_test.ts
+++ b/packages/deployer/test/deployer_test.ts
@@ -4,13 +4,7 @@ import 'mocha';
 import { Compiler } from '../src/compiler';
 import { Deployer } from '../src/deployer';
 import { fsWrapper } from '../src/utils/fs_wrapper';
-import {
-    CompilerOptions,
-    ContractArtifact,
-    ContractDirectory,
-    ContractNetworkData,
-    DoneCallback,
-} from '../src/utils/types';
+import { CompilerOptions, ContractArtifact, ContractNetworkData, DoneCallback } from '../src/utils/types';
 
 import { constructor_args, exchange_binary } from './fixtures/exchange_bin';
 import { constants } from './util/constants';
@@ -20,15 +14,11 @@ const expect = chai.expect;
 
 describe('#Deployer', () => {
     const artifactsDir = `${__dirname}/fixtures/artifacts`;
+    const contractsDir = `${__dirname}/fixtures/contracts`;
     const exchangeArtifactPath = `${artifactsDir}/Exchange.json`;
-    const mainContractDir: ContractDirectory = { path: `${__dirname}/fixtures/contracts/main`, namespace: '' };
-    const baseContractDir: ContractDirectory = { path: `${__dirname}/fixtures/contracts/base`, namespace: 'base' };
-    const contractDirs: Set<ContractDirectory> = new Set();
-    contractDirs.add(mainContractDir);
-    contractDirs.add(baseContractDir);
     const compilerOpts: CompilerOptions = {
         artifactsDir,
-        contractDirs,
+        contractsDir,
         networkId: constants.networkId,
         optimizerEnabled: constants.optimizerEnabled,
         specifiedContracts: new Set(constants.specifiedContracts),
diff --git a/packages/deployer/test/fixtures/contracts/main/Exchange.sol b/packages/deployer/test/fixtures/contracts/Exchange.sol
index ea9ca3afa..1b6819700 100644
--- a/packages/deployer/test/fixtures/contracts/main/Exchange.sol
+++ b/packages/deployer/test/fixtures/contracts/Exchange.sol
@@ -1,6 +1,6 @@
 /*
 
-  Copyright 2018 ZeroEx Intl.
+  Copyright 2017 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -19,8 +19,8 @@
 pragma solidity 0.4.14;
 
 import "./TokenTransferProxy.sol";
-import "/base/Token.sol";
-import "/base/SafeMath.sol";
+import "./base/Token.sol";
+import "./base/SafeMath.sol";
 
 /// @title Exchange - Facilitates exchange of ERC20 tokens.
 /// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com>
diff --git a/packages/deployer/test/fixtures/contracts/main/TokenTransferProxy.sol b/packages/deployer/test/fixtures/contracts/TokenTransferProxy.sol
index 99d16cb57..90c8e7d66 100644
--- a/packages/deployer/test/fixtures/contracts/main/TokenTransferProxy.sol
+++ b/packages/deployer/test/fixtures/contracts/TokenTransferProxy.sol
@@ -1,6 +1,6 @@
 /*
 
-  Copyright 2018 ZeroEx Intl.
+  Copyright 2017 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -18,8 +18,8 @@
 
 pragma solidity 0.4.14;
 
-import "/base/Token.sol";
-import "/base/Ownable.sol";
+import "./base/Token.sol";
+import "./base/Ownable.sol";
 
 /// @title TokenTransferProxy - Transfers tokens on behalf of contracts that have been approved via decentralized governance.
 /// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com>
diff --git a/packages/metacoin/artifacts/Metacoin.json b/packages/metacoin/artifacts/Metacoin.json
index 69ec22cac..46c3ee71c 100644
--- a/packages/metacoin/artifacts/Metacoin.json
+++ b/packages/metacoin/artifacts/Metacoin.json
@@ -3,50 +3,11 @@
     "networks": {
         "50": {
             "solc_version": "0.4.21",
-            "keccak256": "0x85fb29ea6c21adcf07f754b2ad06482dd6fcd62d31935e36041b4d064c6a038e",
-            "source_tree_hash": "0x85fb29ea6c21adcf07f754b2ad06482dd6fcd62d31935e36041b4d064c6a038e",
+            "keccak256": "0x2c3aa2e9dbef58abf57cecc148464d0852a83d7f30bbd2066f2a13b8bd3b1dd0",
+            "source_tree_hash": "0x2c3aa2e9dbef58abf57cecc148464d0852a83d7f30bbd2066f2a13b8bd3b1dd0",
             "optimizer_enabled": false,
             "abi": [
                 {
-                    "constant": false,
-                    "inputs": [
-                        {
-                            "components": [
-                                {
-                                    "components": [
-                                        {
-                                            "name": "to",
-                                            "type": "address"
-                                        },
-                                        {
-                                            "name": "amount",
-                                            "type": "uint256"
-                                        }
-                                    ],
-                                    "name": "transferData",
-                                    "type": "tuple"
-                                },
-                                {
-                                    "name": "callback",
-                                    "type": "uint32"
-                                }
-                            ],
-                            "name": "nestedTransferData",
-                            "type": "tuple"
-                        }
-                    ],
-                    "name": "transfer",
-                    "outputs": [
-                        {
-                            "name": "",
-                            "type": "int256"
-                        }
-                    ],
-                    "payable": false,
-                    "stateMutability": "nonpayable",
-                    "type": "function"
-                },
-                {
                     "constant": true,
                     "inputs": [
                         {
@@ -95,39 +56,6 @@
                     "type": "function"
                 },
                 {
-                    "constant": false,
-                    "inputs": [
-                        {
-                            "components": [
-                                {
-                                    "name": "to",
-                                    "type": "address"
-                                },
-                                {
-                                    "name": "amount",
-                                    "type": "uint256"
-                                }
-                            ],
-                            "name": "transferData",
-                            "type": "tuple"
-                        },
-                        {
-                            "name": "callback",
-                            "type": "uint32"
-                        }
-                    ],
-                    "name": "transfer",
-                    "outputs": [
-                        {
-                            "name": "",
-                            "type": "int256"
-                        }
-                    ],
-                    "payable": false,
-                    "stateMutability": "nonpayable",
-                    "type": "function"
-                },
-                {
                     "inputs": [],
                     "payable": false,
                     "stateMutability": "nonpayable",
@@ -156,14 +84,15 @@
                     "type": "event"
                 }
             ],
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-            "sources": [
-                "/Metacoin.sol"
-            ]
+            "bytecode":
+                "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",
+            "runtime_bytecode":
+                "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",
+            "updated_at": 1522318279735,
+            "source_map": "60:662:0:-;;;290:72;;;;;;;;350:5;327:8;:20;336:10;327:20;;;;;;;;;;;;;;;:28;;;;60:662;;;;;;",
+            "source_map_runtime":
+                "60:662:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;84:41;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;368:352;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;84:41;;;;;;;;;;;;;;;;;:::o;368:352::-;429:12;480;:19;;;457:8;:20;466:10;457:20;;;;;;;;;;;;;;;;:42;453:60;;;508:5;501:12;;;;453:60;547:12;:19;;;523:8;:20;532:10;523:20;;;;;;;;;;;;;;;;:43;;;;;;;;;;;605:12;:19;;;576:8;:25;585:12;:15;;;576:25;;;;;;;;;;;;;;;;:48;;;;;;;;;;;655:12;:15;;;634:58;;643:10;634:58;;;672:12;:19;;;634:58;;;;;;;;;;;;;;;709:4;702:11;;368:352;;;;:::o;5:118:-1:-;;72:46;110:6;97:20;72:46;;;63:55;;57:66;;;;;165:469;;282:4;270:9;265:3;261:19;257:30;254:2;;;300:1;297;290:12;254:2;318:20;333:4;318:20;;;309:29;;386:1;417:49;462:3;453:6;442:9;438:22;417:49;;;411:3;404:5;400:15;393:74;348:130;530:2;563:49;608:3;599:6;588:9;584:22;563:49;;;556:4;549:5;545:16;538:75;488:136;248:386;;;;;641:118;;708:46;746:6;733:20;708:46;;;699:55;;693:66;;;;;766:241;;870:2;858:9;849:7;845:23;841:32;838:2;;;886:1;883;876:12;838:2;921:1;938:53;983:7;974:6;963:9;959:22;938:53;;;928:63;;900:97;832:175;;;;;1014:297;;1146:2;1134:9;1125:7;1121:23;1117:32;1114:2;;;1162:1;1159;1152:12;1114:2;1197:1;1214:81;1287:7;1278:6;1267:9;1263:22;1214:81;;;1204:91;;1176:125;1108:203;;;;;1318:101;1385:28;1407:5;1385:28;;;1380:3;1373:41;1367:52;;;1426:110;1499:31;1524:5;1499:31;;;1494:3;1487:44;1481:55;;;1543:181;;1645:2;1634:9;1630:18;1622:26;;1659:55;1711:1;1700:9;1696:17;1687:6;1659:55;;;1616:108;;;;;1731:193;;1839:2;1828:9;1824:18;1816:26;;1853:61;1911:1;1900:9;1896:17;1887:6;1853:61;;;1810:114;;;;;1931:256;;1993:2;1987:9;1977:19;;2031:4;2023:6;2019:17;2130:6;2118:10;2115:22;2094:18;2082:10;2079:34;2076:62;2073:2;;;2151:1;2148;2141:12;2073:2;2171:10;2167:2;2160:22;1971:216;;;;;2194:92;;2274:5;2267:13;2260:21;2249:32;;2243:43;;;;2293:79;;2362:5;2351:16;;2345:27;;;;2379:128;;2459:42;2452:5;2448:54;2437:65;;2431:76;;;;2514:79;;2583:5;2572:16;;2566:27;;;",
+            "sources": ["Metacoin.sol"]
         }
     }
-}
\ No newline at end of file
+}
diff --git a/packages/metacoin/contracts/Metacoin.sol b/packages/metacoin/contracts/Metacoin.sol
index ac212b32e..6b6814b21 100644
--- a/packages/metacoin/contracts/Metacoin.sol
+++ b/packages/metacoin/contracts/Metacoin.sol
@@ -11,11 +11,6 @@ contract Metacoin {
         uint256 amount;
     }
 
-    struct NestedTransferData {
-        TransferData transferData;
-        uint32 callback;
-    }
-
     function Metacoin() public {
         balances[msg.sender] = 10000;
     }
@@ -27,14 +22,4 @@ contract Metacoin {
         Transfer(msg.sender, transferData.to, transferData.amount);
         return true;
     }
-
-    function transfer(TransferData transferData, uint32 callback) public returns (int) {
-        transfer(transferData);
-        return callback;
-    }
-
-    function transfer(NestedTransferData nestedTransferData) public returns (int) {
-        return transfer(nestedTransferData.transferData, nestedTransferData.callback);
-    }
-
 }
diff --git a/packages/metacoin/package.json b/packages/metacoin/package.json
index f181f5233..148ae32a1 100644
--- a/packages/metacoin/package.json
+++ b/packages/metacoin/package.json
@@ -18,7 +18,7 @@
         "coverage:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test:coverage",
-        "compile": "node ../deployer/lib/src/cli.js compile --contracts Metacoin --contract-dirs contracts --artifacts-dir artifacts"
+        "compile": "node ../deployer/lib/src/cli.js compile --contracts Metacoin --contracts-dir contracts --artifacts-dir artifacts"
     },
     "author": "",
     "license": "Apache-2.0",
diff --git a/packages/metacoin/test/metacoin_test.ts b/packages/metacoin/test/metacoin_test.ts
index 51830d1ef..73537d342 100644
--- a/packages/metacoin/test/metacoin_test.ts
+++ b/packages/metacoin/test/metacoin_test.ts
@@ -36,12 +36,12 @@ describe('Metacoin', () => {
         });
     });
     describe('#transfer', () => {
-        it(`should successfully transfer tokens (via transfer1)`, async () => {
+        it(`should successfully transfer tokens`, async () => {
             const ZERO_ADDRESS = '0x0000000000000000000000000000000000000000';
             const amount = INITIAL_BALANCE.div(2);
             const oldBalance = await metacoin.balances.callAsync(ZERO_ADDRESS);
             expect(oldBalance).to.be.bignumber.equal(0);
-            const txHash = await metacoin.transfer1.sendTransactionAsync(
+            const txHash = await metacoin.transfer.sendTransactionAsync(
                 {
                     to: ZERO_ADDRESS,
                     amount,
@@ -58,57 +58,5 @@ describe('Metacoin', () => {
             const newBalance = await metacoin.balances.callAsync(ZERO_ADDRESS);
             expect(newBalance).to.be.bignumber.equal(amount);
         });
-
-        it(`should successfully transfer tokens (via transfer2)`, async () => {
-            const ZERO_ADDRESS = '0x0000000000000000000000000000000000000000';
-            const amount = INITIAL_BALANCE.div(2);
-            const oldBalance = await metacoin.balances.callAsync(ZERO_ADDRESS);
-            expect(oldBalance).to.be.bignumber.equal(0);
-            const callback = 59;
-            const txHash = await metacoin.transfer2.sendTransactionAsync(
-                {
-                    to: ZERO_ADDRESS,
-                    amount,
-                },
-                callback,
-                { from: devConstants.TESTRPC_FIRST_ADDRESS },
-            );
-            const txReceipt = await web3Wrapper.awaitTransactionMinedAsync(txHash);
-            const transferLogs = txReceipt.logs[0] as LogWithDecodedArgs<TransferContractEventArgs>;
-            expect(transferLogs.args).to.be.deep.equal({
-                _to: ZERO_ADDRESS,
-                _from: devConstants.TESTRPC_FIRST_ADDRESS,
-                _value: amount,
-            });
-            const newBalance = await metacoin.balances.callAsync(ZERO_ADDRESS);
-            expect(newBalance).to.be.bignumber.equal(amount);
-        });
-
-        it(`should successfully transfer tokens (via transfer3)`, async () => {
-            const ZERO_ADDRESS = '0x0000000000000000000000000000000000000000';
-            const amount = INITIAL_BALANCE.div(2);
-            const oldBalance = await metacoin.balances.callAsync(ZERO_ADDRESS);
-            expect(oldBalance).to.be.bignumber.equal(0);
-            const callback = 59;
-            const txHash = await metacoin.transfer3.sendTransactionAsync(
-                {
-                    transferData: {
-                        to: ZERO_ADDRESS,
-                        amount,
-                    },
-                    callback,
-                },
-                { from: devConstants.TESTRPC_FIRST_ADDRESS },
-            );
-            const txReceipt = await web3Wrapper.awaitTransactionMinedAsync(txHash);
-            const transferLogs = txReceipt.logs[0] as LogWithDecodedArgs<TransferContractEventArgs>;
-            expect(transferLogs.args).to.be.deep.equal({
-                _to: ZERO_ADDRESS,
-                _from: devConstants.TESTRPC_FIRST_ADDRESS,
-                _value: amount,
-            });
-            const newBalance = await metacoin.balances.callAsync(ZERO_ADDRESS);
-            expect(newBalance).to.be.bignumber.equal(amount);
-        });
     });
 });
diff --git a/packages/utils/src/abi_utils.ts b/packages/utils/src/abi_utils.ts
deleted file mode 100644
index c4533d42e..000000000
--- a/packages/utils/src/abi_utils.ts
+++ /dev/null
@@ -1,71 +0,0 @@
-import { AbiDefinition, AbiType, ConstructorAbi, ContractAbi, DataItem, MethodAbi } from '@0xproject/types';
-import * as _ from 'lodash';
-
-export const abiUtils = {
-    parseFunctionParam(param: DataItem): string {
-        if (param.type === 'tuple') {
-            // Parse out tuple types into {type_1, type_2, ..., type_N}
-            const tupleComponents = param.components;
-            const paramString = _.map(tupleComponents, component => this.parseFunctionParam(component));
-            const tupleParamString = `{${paramString}}`;
-            return tupleParamString;
-        }
-        return param.type;
-    },
-    getFunctionSignature(methodAbi: MethodAbi): string {
-        const functionName = methodAbi.name;
-        const parameterTypeList = _.map(methodAbi.inputs, (param: DataItem) => this.parseFunctionParam(param));
-        const functionSignature = `${functionName}(${parameterTypeList})`;
-        return functionSignature;
-    },
-    /**
-     * Solidity supports function overloading whereas TypeScript does not.
-     * See: https://solidity.readthedocs.io/en/v0.4.21/contracts.html?highlight=overload#function-overloading
-     * In order to support overloaded functions, we suffix overloaded function names with an index.
-     * This index should be deterministic, regardless of function ordering within the smart contract. To do so,
-     * we assign indexes based on the alphabetical order of function signatures.
-     *
-     * E.g
-     * ['f(uint)', 'f(uint,byte32)']
-     * Should always be renamed to:
-     * ['f1(uint)', 'f2(uint,byte32)']
-     * Regardless of the order in which these these overloaded functions are declared within the contract ABI.
-     */
-    renameOverloadedMethods(inputContractAbi: ContractAbi): ContractAbi {
-        const contractAbi = _.cloneDeep(inputContractAbi);
-        const methodAbis = contractAbi.filter((abi: AbiDefinition) => abi.type === AbiType.Function) as MethodAbi[];
-        // Sort method Abis into alphabetical order, by function signature
-        const methodAbisOrdered = _.sortBy(methodAbis, [
-            (methodAbi: MethodAbi) => {
-                const functionSignature = this.getFunctionSignature(methodAbi);
-                return functionSignature;
-            },
-        ]);
-        // Group method Abis by name (overloaded methods will be grouped together, in alphabetical order)
-        const methodAbisByName: { [key: string]: MethodAbi[] } = {};
-        _.each(methodAbisOrdered, methodAbi => {
-            (methodAbisByName[methodAbi.name] || (methodAbisByName[methodAbi.name] = [])).push(methodAbi);
-        });
-        // Rename overloaded methods to overloadedMethodName1, overloadedMethodName2, ...
-        _.each(methodAbisByName, methodAbisWithSameName => {
-            _.each(methodAbisWithSameName, (methodAbi, i: number) => {
-                if (methodAbisWithSameName.length > 1) {
-                    const overloadedMethodId = i + 1;
-                    const sanitizedMethodName = `${methodAbi.name}${overloadedMethodId}`;
-                    const indexOfExistingAbiWithSanitizedMethodNameIfExists = _.findIndex(
-                        methodAbis,
-                        currentMethodAbi => currentMethodAbi.name === sanitizedMethodName,
-                    );
-                    if (indexOfExistingAbiWithSanitizedMethodNameIfExists >= 0) {
-                        const methodName = methodAbi.name;
-                        throw new Error(
-                            `Failed to rename overloaded method '${methodName}' to '${sanitizedMethodName}'. A method with this name already exists.`,
-                        );
-                    }
-                    methodAbi.name = sanitizedMethodName;
-                }
-            });
-        });
-        return contractAbi;
-    },
-};
diff --git a/packages/utils/src/index.ts b/packages/utils/src/index.ts
index 75c096ee6..6a9c052f8 100644
--- a/packages/utils/src/index.ts
+++ b/packages/utils/src/index.ts
@@ -5,6 +5,4 @@ export { intervalUtils } from './interval_utils';
 export { BigNumber } from './configured_bignumber';
 export { AbiDecoder } from './abi_decoder';
 export { logUtils } from './log_utils';
-export { abiUtils } from './abi_utils';
-
 export { NULL_BYTES } from './constants';