Create contract-artifacts package (needed to solve dependency cycle)

20 files changed, 6270 insertions, 0 deletions

diff --git a/packages/contract-artifacts/README.md b/packages/contract-artifacts/README.md
new file mode 100644
index 000000000..33cbdae26
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+++ b/packages/contract-artifacts/README.md
@@ -0,0 +1,135 @@
+## Contracts
+
+Smart contracts that implement the 0x protocol. Addresses of the deployed contracts can be found [here](https://0xproject.com/wiki#Deployed-Addresses).
+
+## Usage
+
+### 2.0.0
+
+Contracts that make up and interact with version 2.0.0 of the protocol can be found in the `src/2.0.0` directory. The contents of this directory are broken down into the following subdirectories:
+
+*   protocol
+    *   This directory contains the contracts that make up version 2.0.0. A full specification can be found [here](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md).
+*   extensions
+    *   This directory contains contracts that interact with the 2.0.0 contracts and will be used in production, such as the [Forwarder](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/forwarder-specification.md) contract.
+*   examples
+    *   This directory contains example implementations of contracts that interact with the protocol but are _not_ intended for use in production. Examples include [filter](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#filter-contracts) contracts, a [Wallet](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#wallet) contract, and a [Validator](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#validator) contract, among others.
+*   tokens
+    *   This directory contains implementations of different tokens and token standards, including [wETH](https://weth.io/), ZRX, [ERC20](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md), and [ERC721](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md).
+*   multisig
+    *   This directory contains the [Gnosis MultiSigWallet](https://github.com/gnosis/MultiSigWallet) and a custom extension that adds a timelock to transactions within the MultiSigWallet.
+*   utils
+    *   This directory contains libraries and utils that are shared across all of the other directories.
+*   test
+    *   This directory contains mocks and other contracts that are used solely for testing contracts within the other directories.
+
+### 1.0.0
+
+Contracts that make up version 1.0.0 of the protocol can be found in `src/1.0.0`. These contracts are considered deprecated and will have limited support going forward.
+
+## Bug bounty
+
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+
+## Contributing
+
+We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
+
+For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+
+### Install Dependencies
+
+If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
+
+```bash
+yarn config set workspaces-experimental true
+```
+
+Then install dependencies
+
+```bash
+yarn install
+```
+
+### Build
+
+To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
+
+```bash
+PKG=contracts yarn build
+```
+
+Or continuously rebuild on change:
+
+```bash
+PKG=contracts yarn watch
+```
+
+### Clean
+
+```bash
+yarn clean
+```
+
+### Lint
+
+```bash
+yarn lint
+```
+
+### Run Tests
+
+```bash
+yarn test
+```
+
+#### Testing options
+
+###### Revert stack traces
+
+If you want to see helpful stack traces (incl. line number, code snippet) for smart contract reverts, run the tests with:
+
+```
+yarn test:trace
+```
+
+**Note:** This currently slows down the test runs and is therefore not enabled by default.
+
+###### Backing Ethereum node
+
+By default, our tests run against an in-process [Ganache](https://github.com/trufflesuite/ganache-core) instance. In order to run the tests against [Geth](https://github.com/ethereum/go-ethereum), first follow the instructions in the README for the devnet package to start the devnet Geth node. Then run:
+
+```bash
+TEST_PROVIDER=geth yarn test
+```
+
+###### Code coverage
+
+In order to see the Solidity code coverage output generated by `@0xproject/sol-cov`, run:
+
+```
+yarn test:coverage
+```
+
+###### Gas profiler
+
+In order to profile the gas costs for a specific smart contract call/transaction, you can run the tests in `profiler` mode.
+
+**Note:** Traces emitted by ganache have incorrect gas costs so we recommend using Geth for profiling.
+
+```
+TEST_PROVIDER=geth yarn test:profiler
+```
+
+You'll see a warning that you need to explicitly enable and disable the profiler before and after the block of code you want to profile.
+
+```typescript
+import { profiler } from './utils/profiler';
+profiler.start();
+// Some call to a smart contract
+profiler.stop();
+```
+
+Without explicitly starting and stopping the profiler, the profiler output will be too busy, and therefore unusable.
diff --git a/packages/contract-artifacts/artifacts/AssetProxyOwner.json b/packages/contract-artifacts/artifacts/AssetProxyOwner.json
new file mode 100644
index 000000000..a9e97c572
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/AssetProxyOwner.json
@@ -0,0 +1,724 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "AssetProxyOwner",
+    "compilerOutput": {
+        "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": false,
+                "inputs": [
+                    {
+                        "name": "transactionId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "executeRemoveAuthorizedAddressAtIndex",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "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": "assetProxyContract",
+                        "type": "address"
+                    },
+                    {
+                        "name": "isRegistered",
+                        "type": "bool"
+                    }
+                ],
+                "name": "registerAssetProxy",
+                "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": "",
+                        "type": "address"
+                    }
+                ],
+                "name": "isAssetProxyRegistered",
+                "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": "",
+                        "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": "_assetProxyContracts",
+                        "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": false,
+                        "name": "assetProxyContract",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "isRegistered",
+                        "type": "bool"
+                    }
+                ],
+                "name": "AssetProxyRegistration",
+                "type": "event"
+            },
+            {
+                "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"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
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+    }
+}
diff --git a/packages/contract-artifacts/artifacts/DummyERC20Token.json b/packages/contract-artifacts/artifacts/DummyERC20Token.json
new file mode 100644
index 000000000..1a5b796b9
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/DummyERC20Token.json
@@ -0,0 +1,345 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "DummyERC20Token",
+    "compilerOutput": {
+        "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": "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"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_value",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "mint",
+                "outputs": [],
+                "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"
+            },
+            {
+                "constant": true,
+                "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"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "MAX_MINT_AMOUNT",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "uint256"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "inputs": [
+                    {
+                        "name": "_name",
+                        "type": "string"
+                    },
+                    {
+                        "name": "_symbol",
+                        "type": "string"
+                    },
+                    {
+                        "name": "_decimals",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "_totalSupply",
+                        "type": "uint256"
+                    }
+                ],
+                "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"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
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+            }
+        }
+    },
+    "networks": {
+        "3": {
+            "address": "0xff67881f8d12f372d91baae9752eb3631ff0ed00",
+            "links": {},
+            "constructorArgs": "[\"0x Protocol Token\",\"ZRX\",\"18\",\"1000000000000000000000000000\"]"
+        },
+        "42": {
+            "address": "0x2002d3812f58e35f0ea1ffbf80a75a38c32175fa",
+            "links": {},
+            "constructorArgs": "[\"0x Protocol Token\",\"ZRX\",\"18\",\"1000000000000000000000000000\"]"
+        },
+        "50": {
+            "address": "0x871dd7c2b4b25e1aa18728e9d5f2af4c4e431f5c",
+            "links": {},
+            "constructorArgs":
+                "[\"0x Protocol Token\",\"ZRX\",\"18\",\"115792089237316195423570985008687907853269984665640564039457584007913129639935\"]"
+        }
+    }
+}
diff --git a/packages/contract-artifacts/artifacts/DummyERC721Token.json b/packages/contract-artifacts/artifacts/DummyERC721Token.json
new file mode 100644
index 000000000..7472a5a03
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/DummyERC721Token.json
@@ -0,0 +1,375 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "DummyERC721Token",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "name",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "string"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "getApproved",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_approved",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "approve",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_from",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "transferFrom",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "mint",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_from",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "safeTransferFrom",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "ownerOf",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "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"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "burn",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_operator",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_approved",
+                        "type": "bool"
+                    }
+                ],
+                "name": "setApprovalForAll",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_from",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "_data",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "safeTransferFrom",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_operator",
+                        "type": "address"
+                    }
+                ],
+                "name": "isApprovedForAll",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "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"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "constructor"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "_from",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "Transfer",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_approved",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "Approval",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_operator",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "_approved",
+                        "type": "bool"
+                    }
+                ],
+                "name": "ApprovalForAll",
+                "type": "event"
+            }
+        ],
+        "evm": {
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+            }
+        }
+    },
+    "networks": {}
+}
diff --git a/packages/contract-artifacts/artifacts/ERC20Proxy.json b/packages/contract-artifacts/artifacts/ERC20Proxy.json
new file mode 100644
index 000000000..59531be20
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/ERC20Proxy.json
@@ -0,0 +1,216 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "ERC20Proxy",
+    "compilerOutput": {
+        "abi": [
+            {
+                "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": false,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "name": "index",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "removeAuthorizedAddressAtIndex",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "getProxyId",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bytes4"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "pure",
+                "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"
+            },
+            {
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "fallback"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "caller",
+                        "type": "address"
+                    }
+                ],
+                "name": "AuthorizedAddressAdded",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "caller",
+                        "type": "address"
+                    }
+                ],
+                "name": "AuthorizedAddressRemoved",
+                "type": "event"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
+                "object":
+                    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+            }
+        }
+    },
+    "networks": {
+        "1": {
+            "address": "0x2240dab907db71e64d3e0dba4800c83b5c502d4e",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "3": {
+            "address": "0xb1408f4c245a23c31b98d2c626777d4c0d766caa",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "42": {
+            "address": "0xf1ec01d6236d3cd881a0bf0130ea25fe4234003e",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "50": {
+            "address": "0x1dc4c1cefef38a777b15aa20260a54e584b16c48",
+            "links": {},
+            "constructorArgs": "[]"
+        }
+    }
+}
diff --git a/packages/contract-artifacts/artifacts/ERC20Token.json b/packages/contract-artifacts/artifacts/ERC20Token.json
new file mode 100644
index 000000000..d89d08a77
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/ERC20Token.json
@@ -0,0 +1,189 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "ERC20Token",
+    "compilerOutput": {
+        "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"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
+                "object":
+                    "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"
+            }
+        }
+    },
+    "networks": {}
+}
diff --git a/packages/contract-artifacts/artifacts/ERC721Proxy.json b/packages/contract-artifacts/artifacts/ERC721Proxy.json
new file mode 100644
index 000000000..44614fa1f
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/ERC721Proxy.json
@@ -0,0 +1,216 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "ERC721Proxy",
+    "compilerOutput": {
+        "abi": [
+            {
+                "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": false,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "name": "index",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "removeAuthorizedAddressAtIndex",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "getProxyId",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bytes4"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "pure",
+                "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"
+            },
+            {
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "fallback"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "caller",
+                        "type": "address"
+                    }
+                ],
+                "name": "AuthorizedAddressAdded",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "caller",
+                        "type": "address"
+                    }
+                ],
+                "name": "AuthorizedAddressRemoved",
+                "type": "event"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
+                "object":
+                    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+            }
+        }
+    },
+    "networks": {
+        "1": {
+            "address": "0x208e41fb445f1bb1b6780d58356e81405f3e6127",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "3": {
+            "address": "0xe654aac058bfbf9f83fcaee7793311dd82f6ddb4",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "42": {
+            "address": "0x2a9127c745688a165106c11cd4d647d2220af821",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "50": {
+            "address": "0x1d7022f5b17d2f8b695918fb48fa1089c9f85401",
+            "links": {},
+            "constructorArgs": "[]"
+        }
+    }
+}
diff --git a/packages/contract-artifacts/artifacts/ERC721Token.json b/packages/contract-artifacts/artifacts/ERC721Token.json
new file mode 100644
index 000000000..d189090e8
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/ERC721Token.json
@@ -0,0 +1,268 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "ERC721Token",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "getApproved",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_approved",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "approve",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_from",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "transferFrom",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_from",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "safeTransferFrom",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "ownerOf",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "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": false,
+                "inputs": [
+                    {
+                        "name": "_operator",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_approved",
+                        "type": "bool"
+                    }
+                ],
+                "name": "setApprovalForAll",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_from",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "_data",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "safeTransferFrom",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_operator",
+                        "type": "address"
+                    }
+                ],
+                "name": "isApprovedForAll",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "_from",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "Transfer",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_approved",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "Approval",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_operator",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "_approved",
+                        "type": "bool"
+                    }
+                ],
+                "name": "ApprovalForAll",
+                "type": "event"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
+                "object":
+                    "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+            }
+        }
+    },
+    "networks": {}
+}
diff --git a/packages/contract-artifacts/artifacts/Exchange.json b/packages/contract-artifacts/artifacts/Exchange.json
new file mode 100644
index 000000000..3eb231c7a
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/Exchange.json
@@ -0,0 +1,1997 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "Exchange",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "bytes32"
+                    }
+                ],
+                "name": "filled",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "uint256"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "takerAssetFillAmounts",
+                        "type": "uint256[]"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    }
+                ],
+                "name": "batchFillOrders",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "totalFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "bytes32"
+                    }
+                ],
+                "name": "cancelled",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "hash",
+                        "type": "bytes32"
+                    },
+                    {
+                        "name": "signerAddress",
+                        "type": "address"
+                    },
+                    {
+                        "name": "signature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "preSign",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "leftOrder",
+                        "type": "tuple"
+                    },
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "rightOrder",
+                        "type": "tuple"
+                    },
+                    {
+                        "name": "leftSignature",
+                        "type": "bytes"
+                    },
+                    {
+                        "name": "rightSignature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "matchOrders",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "components": [
+                                    {
+                                        "name": "makerAssetFilledAmount",
+                                        "type": "uint256"
+                                    },
+                                    {
+                                        "name": "takerAssetFilledAmount",
+                                        "type": "uint256"
+                                    },
+                                    {
+                                        "name": "makerFeePaid",
+                                        "type": "uint256"
+                                    },
+                                    {
+                                        "name": "takerFeePaid",
+                                        "type": "uint256"
+                                    }
+                                ],
+                                "name": "left",
+                                "type": "tuple"
+                            },
+                            {
+                                "components": [
+                                    {
+                                        "name": "makerAssetFilledAmount",
+                                        "type": "uint256"
+                                    },
+                                    {
+                                        "name": "takerAssetFilledAmount",
+                                        "type": "uint256"
+                                    },
+                                    {
+                                        "name": "makerFeePaid",
+                                        "type": "uint256"
+                                    },
+                                    {
+                                        "name": "takerFeePaid",
+                                        "type": "uint256"
+                                    }
+                                ],
+                                "name": "right",
+                                "type": "tuple"
+                            },
+                            {
+                                "name": "leftMakerAssetSpreadAmount",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "matchedFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "order",
+                        "type": "tuple"
+                    },
+                    {
+                        "name": "takerAssetFillAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "fillOrderNoThrow",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "fillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "bytes4"
+                    }
+                ],
+                "name": "assetProxies",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    }
+                ],
+                "name": "batchCancelOrders",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "takerAssetFillAmounts",
+                        "type": "uint256[]"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    }
+                ],
+                "name": "batchFillOrKillOrders",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "totalFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "targetOrderEpoch",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "cancelOrdersUpTo",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "takerAssetFillAmounts",
+                        "type": "uint256[]"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    }
+                ],
+                "name": "batchFillOrdersNoThrow",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "totalFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "assetProxyId",
+                        "type": "bytes4"
+                    }
+                ],
+                "name": "getAssetProxy",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "bytes32"
+                    }
+                ],
+                "name": "transactions",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "order",
+                        "type": "tuple"
+                    },
+                    {
+                        "name": "takerAssetFillAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "fillOrKillOrder",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "fillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "validatorAddress",
+                        "type": "address"
+                    },
+                    {
+                        "name": "approval",
+                        "type": "bool"
+                    }
+                ],
+                "name": "setSignatureValidatorApproval",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    },
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "name": "allowedValidators",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "takerAssetFillAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    }
+                ],
+                "name": "marketSellOrders",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "totalFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    }
+                ],
+                "name": "getOrdersInfo",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "orderStatus",
+                                "type": "uint8"
+                            },
+                            {
+                                "name": "orderHash",
+                                "type": "bytes32"
+                            },
+                            {
+                                "name": "orderTakerAssetFilledAmount",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "",
+                        "type": "tuple[]"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "bytes32"
+                    },
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "name": "preSigned",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "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": "hash",
+                        "type": "bytes32"
+                    },
+                    {
+                        "name": "signerAddress",
+                        "type": "address"
+                    },
+                    {
+                        "name": "signature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "isValidSignature",
+                "outputs": [
+                    {
+                        "name": "isValid",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "makerAssetFillAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    }
+                ],
+                "name": "marketBuyOrdersNoThrow",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "totalFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "order",
+                        "type": "tuple"
+                    },
+                    {
+                        "name": "takerAssetFillAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "fillOrder",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "fillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "salt",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signerAddress",
+                        "type": "address"
+                    },
+                    {
+                        "name": "data",
+                        "type": "bytes"
+                    },
+                    {
+                        "name": "signature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "executeTransaction",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "assetProxy",
+                        "type": "address"
+                    }
+                ],
+                "name": "registerAssetProxy",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "order",
+                        "type": "tuple"
+                    }
+                ],
+                "name": "getOrderInfo",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "orderStatus",
+                                "type": "uint8"
+                            },
+                            {
+                                "name": "orderHash",
+                                "type": "bytes32"
+                            },
+                            {
+                                "name": "orderTakerAssetFilledAmount",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "orderInfo",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "order",
+                        "type": "tuple"
+                    }
+                ],
+                "name": "cancelOrder",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    },
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "name": "orderEpoch",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "uint256"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "ZRX_ASSET_DATA",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bytes"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "takerAssetFillAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    }
+                ],
+                "name": "marketSellOrdersNoThrow",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "totalFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "EIP712_DOMAIN_HASH",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bytes32"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "makerAssetFillAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    }
+                ],
+                "name": "marketBuyOrders",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "totalFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "currentContextAddress",
+                "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": true,
+                "inputs": [],
+                "name": "VERSION",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "string"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "inputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "constructor"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "signerAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "validatorAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "approved",
+                        "type": "bool"
+                    }
+                ],
+                "name": "SignatureValidatorApproval",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "makerAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "feeRecipientAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "takerAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "senderAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "makerAssetFilledAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "takerAssetFilledAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "makerFeePaid",
+                        "type": "uint256"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "takerFeePaid",
+                        "type": "uint256"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "orderHash",
+                        "type": "bytes32"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "makerAssetData",
+                        "type": "bytes"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "takerAssetData",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "Fill",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "makerAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "feeRecipientAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "senderAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "orderHash",
+                        "type": "bytes32"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "makerAssetData",
+                        "type": "bytes"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "takerAssetData",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "Cancel",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "makerAddress",
+                        "type": "address"
+                    },
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+                        "name": "senderAddress",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "orderEpoch",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "CancelUpTo",
+                "type": "event"
+            },
+            {
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+                "inputs": [
+                    {
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+                        "name": "id",
+                        "type": "bytes4"
+                    },
+                    {
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+                        "name": "assetProxy",
+                        "type": "address"
+                    }
+                ],
+                "name": "AssetProxyRegistered",
+                "type": "event"
+            }
+        ],
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+            }
+        }
+    },
+    "networks": {
+        "1": {
+            "address": "0x4f833a24e1f95d70f028921e27040ca56e09ab0b",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "3": {
+            "address": "0x4530c0483a1633c7a1c97d2c53721caff2caaaaf",
+            "links": {},
+            "constructorArgs": "[\"0xf47261b0000000000000000000000000ff67881f8d12f372d91baae9752eb3631ff0ed00\"]"
+        },
+        "42": {
+            "address": "0x35dd2932454449b14cee11a94d3674a936d5d7b2",
+            "links": {},
+            "constructorArgs": "[\"0xf47261b00000000000000000000000002002d3812f58e35f0ea1ffbf80a75a38c32175fa\"]"
+        },
+        "50": {
+            "address": "0x48bacb9266a570d521063ef5dd96e61686dbe788",
+            "links": {},
+            "constructorArgs": "[\"0xf47261b0000000000000000000000000871dd7c2b4b25e1aa18728e9d5f2af4c4e431f5c\"]"
+        }
+    }
+}
diff --git a/packages/contract-artifacts/artifacts/Forwarder.json b/packages/contract-artifacts/artifacts/Forwarder.json
new file mode 100644
index 000000000..9fe4fd601
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/Forwarder.json
@@ -0,0 +1,473 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "Forwarder",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "makerAssetFillAmount",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    },
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "feeOrders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "feeSignatures",
+                        "type": "bytes[]"
+                    },
+                    {
+                        "name": "feePercentage",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "feeRecipient",
+                        "type": "address"
+                    }
+                ],
+                "name": "marketBuyOrdersWithEth",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "orderFillResults",
+                        "type": "tuple"
+                    },
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "feeOrderFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": true,
+                "stateMutability": "payable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "assetData",
+                        "type": "bytes"
+                    },
+                    {
+                        "name": "amount",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "withdrawAsset",
+                "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": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "signatures",
+                        "type": "bytes[]"
+                    },
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "feeOrders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "feeSignatures",
+                        "type": "bytes[]"
+                    },
+                    {
+                        "name": "feePercentage",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "feeRecipient",
+                        "type": "address"
+                    }
+                ],
+                "name": "marketSellOrdersWithEth",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "orderFillResults",
+                        "type": "tuple"
+                    },
+                    {
+                        "components": [
+                            {
+                                "name": "makerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetFilledAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFeePaid",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFeePaid",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "feeOrderFillResults",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": true,
+                "stateMutability": "payable",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "newOwner",
+                        "type": "address"
+                    }
+                ],
+                "name": "transferOwnership",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "inputs": [
+                    {
+                        "name": "_exchange",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_zrxAssetData",
+                        "type": "bytes"
+                    },
+                    {
+                        "name": "_wethAssetData",
+                        "type": "bytes"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "constructor"
+            },
+            {
+                "payable": true,
+                "stateMutability": "payable",
+                "type": "fallback"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
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+            }
+        }
+    },
+    "networks": {
+        "1": {
+            "address": "0x7afc2d5107af94c462a194d2c21b5bdd238709d6",
+            "links": {},
+            "constructorArgs":
+                "[\"0x4f833a24e1f95d70f028921e27040ca56e09ab0b\",\"0xf47261b0000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498\",\"0xf47261b0000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2\"]"
+        },
+        "3": {
+            "address": "0x3983e204b12b3c02fb0638caf2cd406a62e0ead3",
+            "links": {},
+            "constructorArgs":
+                "[\"0x4530c0483a1633c7a1c97d2c53721caff2caaaaf\",\"0xf47261b0000000000000000000000000ff67881f8d12f372d91baae9752eb3631ff0ed00\",\"0xf47261b0000000000000000000000000c778417e063141139fce010982780140aa0cd5ab\"]"
+        },
+        "42": {
+            "address": "0xd85e2fa7e7e252b27b01bf0d65c946959d2f45b8",
+            "links": {},
+            "constructorArgs":
+                "[\"0x35dd2932454449b14cee11a94d3674a936d5d7b2\",\"0xf47261b00000000000000000000000002002d3812f58e35f0ea1ffbf80a75a38c32175fa\",\"0xf47261b0000000000000000000000000d0a1e359811322d97991e03f863a0c30c2cf029c\"]"
+        },
+        "50": {
+            "address": "0xb69e673309512a9d726f87304c6984054f87a93b",
+            "links": {},
+            "constructorArgs":
+                "[\"0x0b1ba0af832d7c05fd64161e0db78e85978e8082\",\"0xf47261b0000000000000000000000000871dd7c2b4b25e1aa18728e9d5f2af4c4e431f5c\",\"0xf47261b00000000000000000000000000000000000000000000000000000000000000000\"]"
+        }
+    }
+}
diff --git a/packages/contract-artifacts/artifacts/IValidator.json b/packages/contract-artifacts/artifacts/IValidator.json
new file mode 100644
index 000000000..8ca99f261
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/IValidator.json
@@ -0,0 +1,41 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "IValidator",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "hash",
+                        "type": "bytes32"
+                    },
+                    {
+                        "name": "signerAddress",
+                        "type": "address"
+                    },
+                    {
+                        "name": "signature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "isValidSignature",
+                "outputs": [
+                    {
+                        "name": "isValid",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "object": "0x"
+            }
+        }
+    },
+    "networks": {}
+}
diff --git a/packages/contract-artifacts/artifacts/IWallet.json b/packages/contract-artifacts/artifacts/IWallet.json
new file mode 100644
index 000000000..2a8f975cc
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/IWallet.json
@@ -0,0 +1,37 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "IWallet",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "hash",
+                        "type": "bytes32"
+                    },
+                    {
+                        "name": "signature",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "isValidSignature",
+                "outputs": [
+                    {
+                        "name": "isValid",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "object": "0x"
+            }
+        }
+    },
+    "networks": {}
+}
diff --git a/packages/contract-artifacts/artifacts/OrderValidator.json b/packages/contract-artifacts/artifacts/OrderValidator.json
new file mode 100644
index 000000000..85032bbeb
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/OrderValidator.json
@@ -0,0 +1,597 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "OrderValidator",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "order",
+                        "type": "tuple"
+                    },
+                    {
+                        "name": "takerAddress",
+                        "type": "address"
+                    }
+                ],
+                "name": "getOrderAndTraderInfo",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "orderStatus",
+                                "type": "uint8"
+                            },
+                            {
+                                "name": "orderHash",
+                                "type": "bytes32"
+                            },
+                            {
+                                "name": "orderTakerAssetFilledAmount",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "orderInfo",
+                        "type": "tuple"
+                    },
+                    {
+                        "components": [
+                            {
+                                "name": "makerBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerZrxBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerZrxAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerZrxBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerZrxAllowance",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "traderInfo",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "name": "assetData",
+                        "type": "bytes"
+                    }
+                ],
+                "name": "getBalanceAndAllowance",
+                "outputs": [
+                    {
+                        "name": "balance",
+                        "type": "uint256"
+                    },
+                    {
+                        "name": "allowance",
+                        "type": "uint256"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "takerAddresses",
+                        "type": "address[]"
+                    }
+                ],
+                "name": "getOrdersAndTradersInfo",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "orderStatus",
+                                "type": "uint8"
+                            },
+                            {
+                                "name": "orderHash",
+                                "type": "bytes32"
+                            },
+                            {
+                                "name": "orderTakerAssetFilledAmount",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "ordersInfo",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "components": [
+                            {
+                                "name": "makerBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerZrxBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerZrxAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerZrxBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerZrxAllowance",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "tradersInfo",
+                        "type": "tuple[]"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "orders",
+                        "type": "tuple[]"
+                    },
+                    {
+                        "name": "takerAddresses",
+                        "type": "address[]"
+                    }
+                ],
+                "name": "getTradersInfo",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerZrxBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerZrxAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerZrxBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerZrxAllowance",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "",
+                        "type": "tuple[]"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "token",
+                        "type": "address"
+                    },
+                    {
+                        "name": "tokenId",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "getERC721TokenOwner",
+                "outputs": [
+                    {
+                        "name": "owner",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "name": "assetData",
+                        "type": "bytes[]"
+                    }
+                ],
+                "name": "getBalancesAndAllowances",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "uint256[]"
+                    },
+                    {
+                        "name": "",
+                        "type": "uint256[]"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "takerAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "feeRecipientAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "senderAddress",
+                                "type": "address"
+                            },
+                            {
+                                "name": "makerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAssetAmount",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerFee",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "expirationTimeSeconds",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "salt",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAssetData",
+                                "type": "bytes"
+                            },
+                            {
+                                "name": "takerAssetData",
+                                "type": "bytes"
+                            }
+                        ],
+                        "name": "order",
+                        "type": "tuple"
+                    },
+                    {
+                        "name": "takerAddress",
+                        "type": "address"
+                    }
+                ],
+                "name": "getTraderInfo",
+                "outputs": [
+                    {
+                        "components": [
+                            {
+                                "name": "makerBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerZrxBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "makerZrxAllowance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerZrxBalance",
+                                "type": "uint256"
+                            },
+                            {
+                                "name": "takerZrxAllowance",
+                                "type": "uint256"
+                            }
+                        ],
+                        "name": "traderInfo",
+                        "type": "tuple"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "inputs": [
+                    {
+                        "name": "_exchange",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_zrxAssetData",
+                        "type": "bytes"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "constructor"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
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+            }
+        }
+    },
+    "networks": {
+        "1": {
+            "address": "0x9463e518dea6810309563c81d5266c1b1d149138",
+            "links": {},
+            "constructorArgs":
+                "[\"0x4f833a24e1f95d70f028921e27040ca56e09ab0b\",\"0xf47261b0000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498\"]"
+        },
+        "3": {
+            "address": "0x90431a90516ab49af23a0530e04e8c7836e7122f",
+            "links": {},
+            "constructorArgs":
+                "[\"0x4530c0483a1633c7a1c97d2c53721caff2caaaaf\",\"0xf47261b0000000000000000000000000ff67881f8d12f372d91baae9752eb3631ff0ed00\"]"
+        },
+        "42": {
+            "address": "0xb389da3d204b412df2f75c6afb3d0a7ce0bc283d",
+            "links": {},
+            "constructorArgs":
+                "[\"0x35dd2932454449b14cee11a94d3674a936d5d7b2\",\"0xf47261b00000000000000000000000002002d3812f58e35f0ea1ffbf80a75a38c32175fa\"]"
+        },
+        "50": {
+            "address": "0xe86bb98fcf9bff3512c74589b78fb168200cc546",
+            "links": {},
+            "constructorArgs":
+                "[\"0x48bacb9266a570d521063ef5dd96e61686dbe788\",\"0xf47261b0000000000000000000000000871dd7c2b4b25e1aa18728e9d5f2af4c4e431f5c\"]"
+        }
+    }
+}
diff --git a/packages/contract-artifacts/artifacts/WETH9.json b/packages/contract-artifacts/artifacts/WETH9.json
new file mode 100644
index 000000000..cd2d83104
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/WETH9.json
@@ -0,0 +1,314 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "WETH9",
+    "compilerOutput": {
+        "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": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "_spender",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "_value",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "Approval",
+                "type": "event"
+            },
+            {
+                "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": false,
+                        "name": "_value",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "Deposit",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "_value",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "Withdrawal",
+                "type": "event"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
+                "object":
+                    "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"
+            }
+        }
+    },
+    "networks": {
+        "1": {
+            "address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "3": {
+            "address": "0xc778417e063141139fce010982780140aa0cd5ab",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "42": {
+            "address": "0xd0a1e359811322d97991e03f863a0c30c2cf029c",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "50": {
+            "address": "0x0b1ba0af832d7c05fd64161e0db78e85978e8082",
+            "links": {},
+            "constructorArgs": "[]"
+        }
+    }
+}
diff --git a/packages/contract-artifacts/artifacts/ZRXToken.json b/packages/contract-artifacts/artifacts/ZRXToken.json
new file mode 100644
index 000000000..c2053578f
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/ZRXToken.json
@@ -0,0 +1,248 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "ZRXToken",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "name",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "string"
+                    }
+                ],
+                "payable": false,
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_spender",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_value",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "approve",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "totalSupply",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "uint256"
+                    }
+                ],
+                "payable": false,
+                "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,
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "decimals",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "uint8"
+                    }
+                ],
+                "payable": false,
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "_owner",
+                        "type": "address"
+                    }
+                ],
+                "name": "balanceOf",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "uint256"
+                    }
+                ],
+                "payable": false,
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "symbol",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "string"
+                    }
+                ],
+                "payable": false,
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "_to",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_value",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "transfer",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "_owner",
+                        "type": "address"
+                    },
+                    {
+                        "name": "_spender",
+                        "type": "address"
+                    }
+                ],
+                "name": "allowance",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "uint256"
+                    }
+                ],
+                "payable": false,
+                "type": "function"
+            },
+            {
+                "inputs": [],
+                "payable": false,
+                "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"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
+                "object":
+                    "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"
+            }
+        }
+    },
+    "networks": {
+        "1": {
+            "address": "0xe41d2489571d322189246dafa5ebde1f4699f498",
+            "links": {},
+            "constructorArgs": "[]"
+        },
+        "3": {
+            "address": "0xff67881f8d12f372d91baae9752eb3631ff0ed00",
+            "links": {},
+            "constructorArgs": "[\"0x Protocol Token\",\"ZRX\",\"18\",\"1000000000000000000000000000\"]"
+        },
+        "42": {
+            "address": "0x2002d3812f58e35f0ea1ffbf80a75a38c32175fa",
+            "links": {},
+            "constructorArgs": "[\"0x Protocol Token\",\"ZRX\",\"18\",\"1000000000000000000000000000\"]"
+        },
+        "50": {
+            "address": "0x871dd7c2b4b25e1aa18728e9d5f2af4c4e431f5c",
+            "links": {},
+            "constructorArgs": "[]"
+        }
+    }
+}
diff --git a/packages/contract-artifacts/package.json b/packages/contract-artifacts/package.json
new file mode 100644
index 000000000..1493510e8
--- /dev/null
+++ b/packages/contract-artifacts/package.json
@@ -0,0 +1,34 @@
+{
+    "name": "@0xproject/contract-artifacts",
+    "version": "2.0.0",
+    "engines": {
+        "node": ">=6.12"
+    },
+    "description": "Smart contract components of 0x protocol",
+    "main": "lib/src/index.js",
+    "directories": {
+        "test": "test"
+    },
+    "scripts": {
+        "build": "yarn tsc -b",
+        "build:ci": "yarn build",
+        "clean": "shx rm -rf lib"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/0xProject/0x-monorepo.git"
+    },
+    "license": "Apache-2.0",
+    "bugs": {
+        "url": "https://github.com/0xProject/0x-monorepo/issues"
+    },
+    "homepage": "https://github.com/0xProject/0x-monorepo/packages/contract-artifacts/README.md",
+    "devDependencies": {
+        "typescript": "3.0.1"
+    },
+    "dependencies": {
+    },
+    "publishConfig": {
+        "access": "public"
+    }
+}
diff --git a/packages/contract-artifacts/src/index.ts b/packages/contract-artifacts/src/index.ts
new file mode 100644
index 000000000..d8c83503b
--- /dev/null
+++ b/packages/contract-artifacts/src/index.ts
@@ -0,0 +1,32 @@
+import * as AssetProxyOwner from '../artifacts/AssetProxyOwner.json';
+import * as DummyERC20Token from '../artifacts/DummyERC20Token.json';
+import * as DummyERC721Token from '../artifacts/DummyERC721Token.json';
+import * as ERC20Proxy from '../artifacts/ERC20Proxy.json';
+import * as ERC20Token from '../artifacts/ERC20Token.json';
+import * as ERC721Proxy from '../artifacts/ERC721Proxy.json';
+import * as ERC721Token from '../artifacts/ERC721Token.json';
+import * as Exchange from '../artifacts/Exchange.json';
+import * as Forwarder from '../artifacts/Forwarder.json';
+import * as IValidator from '../artifacts/IValidator.json';
+import * as IWallet from '../artifacts/IWallet.json';
+import * as OrderValidator from '../artifacts/OrderValidator.json';
+import * as WETH9 from '../artifacts/WETH9.json';
+import * as ZRXToken from '../artifacts/ZRXToken.json';
+
+// TODO(albrow): Do we need to export all of these?
+export const artifacts = {
+    AssetProxyOwner,
+    DummyERC20Token,
+    DummyERC721Token,
+    ERC20Proxy,
+    ERC20Token,
+    ERC721Proxy,
+    ERC721Token,
+    Exchange,
+    Forwarder,
+    IValidator,
+    IWallet,
+    OrderValidator,
+    WETH9,
+    ZRXToken,
+};
diff --git a/packages/contract-artifacts/tsconfig.json b/packages/contract-artifacts/tsconfig.json
new file mode 100644
index 000000000..6d6f85d93
--- /dev/null
+++ b/packages/contract-artifacts/tsconfig.json
@@ -0,0 +1,25 @@
+{
+    "extends": "../../tsconfig",
+    "compilerOptions": {
+        "outDir": "lib",
+        "rootDir": ".",
+        "resolveJsonModule": true
+    },
+    "include": ["./globals.d.ts", "./src/**/*"],
+    "files": [
+        "./artifacts/AssetProxyOwner.json",
+        "./artifacts/DummyERC20Token.json",
+        "./artifacts/DummyERC721Token.json",
+        "./artifacts/ERC20Proxy.json",
+        "./artifacts/ERC20Token.json",
+        "./artifacts/ERC721Proxy.json",
+        "./artifacts/ERC721Token.json",
+        "./artifacts/Exchange.json",
+        "./artifacts/Forwarder.json",
+        "./artifacts/IValidator.json",
+        "./artifacts/IWallet.json",
+        "./artifacts/OrderValidator.json",
+        "./artifacts/WETH9.json",
+        "./artifacts/ZRXToken.json"
+    ]
+}
diff --git a/packages/contract-artifacts/tslint.json b/packages/contract-artifacts/tslint.json
new file mode 100644
index 000000000..ffaefe83a
--- /dev/null
+++ b/packages/contract-artifacts/tslint.json
@@ -0,0 +1,3 @@
+{
+    "extends": ["@0xproject/tslint-config"]
+}
diff --git a/tsconfig.json b/tsconfig.json
index bc71dfb70..5d1da9d02 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -26,6 +26,7 @@
         { "path": "./packages/asset-buyer" },
         { "path": "./packages/base-contract" },
         { "path": "./packages/connect" },
+        { "path": "./packages/contract-artifacts" },
         { "path": "./packages/contract-wrappers" },
         { "path": "./packages/contracts" },
         { "path": "./packages/dev-utils" },