Merge branch 'master' into wrap-log-bignumber

25 files changed, 687 insertions, 246 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index da3d641ac..700095ea0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # CHANGELOG
 
+v0.7.2 - _Jun. 26, 2017_
+------------------------
+    * Add the ability to call methods on different authorized versions of the Exchange smart contract (#82)
+    * Update contract artifacts to reflect latest changes to the smart contracts (0xproject/contracts#59)
+
 v0.7.1 - _Jun. 26, 2017_
 ------------------------
     * Add the ability to convert Ether to wrapped Ether tokens and back via `zeroEx.etherToken.depostAsync` and `zeroEx.etherToken.withdrawAsync` (#81)
diff --git a/circle.yml b/circle.yml
index b13422f5a..7bb33efed 100644
--- a/circle.yml
+++ b/circle.yml
@@ -8,7 +8,6 @@ test:
         background: true
     - git clone git@github.com:0xProject/contracts.git ../contracts
     - cd ../contracts; git checkout cd04d7c; npm install && npm run migrate
-    - npm run update_contracts
     - npm run test:coverage
     - npm run report_test_coverage
     - npm run test:umd
diff --git a/package.json b/package.json
index aaf6ada16..4f9c6f3ae 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "build:dev": "npm run clean && run-p build:*:dev",
     "build:umd:dev": "webpack",
     "build:umd:prod": "NODE_ENV=production webpack",
-    "build:commonjs:dev": "tsc; copyfiles -u 2 ./src/artifacts/*.json ../0x.js/lib/src/artifacts;",
+    "build:commonjs:dev": "tsc; copyfiles -u 2 './src/artifacts/**/*.json' ./lib/src/artifacts;",
     "test:commonjs": "run-s build:commonjs:dev run_mocha",
     "pretest:umd": "run-s clean build:*:dev",
     "substitute_umd_bundle": "npm run remove_src_files_not_used_by_tests; shx mv _bundles/* lib/src",
@@ -61,14 +61,14 @@
     "awesome-typescript-loader": "^3.1.3",
     "bignumber.js": "^4.0.2",
     "chai": "^4.0.1",
-    "chai-as-promised": "^6.0.0",
+    "chai-as-promised": "^7.1.0",
     "chai-as-promised-typescript-typings": "0.0.3",
     "chai-bignumber": "0xProject/chai-bignumber",
     "chai-typescript-typings": "^0.0.0",
     "copyfiles": "^1.2.0",
     "coveralls": "^2.13.1",
     "dirty-chai": "^1.2.2",
-    "ethereumjs-testrpc": "3.0.5",
+    "ethereumjs-testrpc": "4.0.1",
     "json-loader": "^0.5.4",
     "mocha": "^3.4.1",
     "npm-run-all": "^4.0.2",
diff --git a/src/0x.ts b/src/0x.ts
index d7a01ba70..b56a2f949 100644
--- a/src/0x.ts
+++ b/src/0x.ts
@@ -15,8 +15,8 @@ import {TokenRegistryWrapper} from './contract_wrappers/token_registry_wrapper';
 import {EtherTokenWrapper} from './contract_wrappers/ether_token_wrapper';
 import {ecSignatureSchema} from './schemas/ec_signature_schema';
 import {TokenWrapper} from './contract_wrappers/token_wrapper';
+import {ProxyWrapper} from './contract_wrappers/proxy_wrapper';
 import {ECSignature, ZeroExError, Order, SignedOrder, Web3Provider} from './types';
-import * as ExchangeArtifacts from './artifacts/Exchange.json';
 import {orderSchema} from './schemas/order_schemas';
 
 // Customize our BigNumber instances
@@ -52,6 +52,7 @@ export class ZeroEx {
      * wrapped ETH ERC20 token smart contract.
      */
     public etherToken: EtherTokenWrapper;
+    private _proxyWrapper: ProxyWrapper;
     private _web3Wrapper: Web3Wrapper;
     /**
      * Verifies that the elliptic curve signature `signature` was generated
@@ -149,7 +150,8 @@ export class ZeroEx {
     constructor(provider: Web3Provider) {
         this._web3Wrapper = new Web3Wrapper(provider);
         this.token = new TokenWrapper(this._web3Wrapper);
-        this.exchange = new ExchangeWrapper(this._web3Wrapper, this.token);
+        this._proxyWrapper = new ProxyWrapper(this._web3Wrapper);
+        this.exchange = new ExchangeWrapper(this._web3Wrapper, this.token, this._proxyWrapper);
         this.tokenRegistry = new TokenRegistryWrapper(this._web3Wrapper);
         this.etherToken = new EtherTokenWrapper(this._web3Wrapper, this.token);
     }
@@ -160,9 +162,10 @@ export class ZeroEx {
      */
     public async setProviderAsync(provider: Web3Provider) {
         this._web3Wrapper.setProvider(provider);
-        await this.exchange.invalidateContractInstanceAsync();
+        await this.exchange.invalidateContractInstancesAsync();
         this.tokenRegistry.invalidateContractInstance();
         this.token.invalidateContractInstances();
+        this._proxyWrapper.invalidateContractInstance();
     }
     /**
      * Get user Ethereum addresses available through the supplied web3 instance available for sending transactions.
@@ -177,11 +180,9 @@ export class ZeroEx {
      * @param   order   An object that conforms to the Order or SignedOrder interface definitions.
      * @return  The resulting orderHash from hashing the supplied order.
      */
-    public async getOrderHashHexAsync(order: Order|SignedOrder): Promise<string> {
+    public getOrderHashHex(order: Order|SignedOrder): string {
         assert.doesConformToSchema('order', order, orderSchema);
-
-        const exchangeContractAddr = await this._getExchangeAddressAsync();
-        const orderHashHex = utils.getOrderHashHex(order, exchangeContractAddr);
+        const orderHashHex = utils.getOrderHashHex(order);
         return orderHashHex;
     }
     /**
@@ -199,8 +200,9 @@ export class ZeroEx {
         let msgHashHex;
         const nodeVersion = await this._web3Wrapper.getNodeVersionAsync();
         const isParityNode = utils.isParityNode(nodeVersion);
-        if (isParityNode) {
-            // Parity node adds the personalMessage prefix itself
+        const isTestRpc = utils.isTestRpc(nodeVersion);
+        if (isParityNode || isTestRpc) {
+            // Parity and TestRpc nodes add the personalMessage prefix itself
             msgHashHex = orderHash;
         } else {
             const orderHashBuff = ethUtil.toBuffer(orderHash);
@@ -244,15 +246,4 @@ export class ZeroEx {
         }
         return ecSignature;
     }
-    private async _getExchangeAddressAsync() {
-        const networkIdIfExists = await this._web3Wrapper.getNetworkIdIfExistsAsync();
-        const exchangeNetworkConfigsIfExists = _.isUndefined(networkIdIfExists) ?
-                                       undefined :
-                                       (ExchangeArtifacts as any).networks[networkIdIfExists];
-        if (_.isUndefined(exchangeNetworkConfigsIfExists)) {
-            throw new Error(ZeroExError.CONTRACT_NOT_DEPLOYED_ON_NETWORK);
-        }
-        const exchangeAddress = exchangeNetworkConfigsIfExists.address;
-        return exchangeAddress;
-    }
 }
diff --git a/src/artifacts/EtherToken.json b/src/artifacts/EtherToken.json
index 0307cb22c..3ca4bd797 100644
--- a/src/artifacts/EtherToken.json
+++ b/src/artifacts/EtherToken.json
@@ -229,7 +229,7 @@
       "type": "event"
     }
   ],
-  "unlinked_binary": "0x606060405234610000575b61072d806100196000396000f300606060405236156100935763ffffffff60e060020a60003504166306fdde038114610098578063095ea7b31461012557806318160ddd1461015557806323b872dd146101745780632e1a7d4d146101aa578063313ce567146101bc57806370a08231146101df57806395d89b411461020a578063a9059cbb14610297578063d0e30db0146102c7578063dd62ed3e146102d1575b610000565b34610000576100a5610302565b6040805160208082528351818301528351919283929083019185019080838382156100eb575b8051825260208311156100eb57601f1990920191602091820191016100cb565b505050905090810190601f1680156101175780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b3461000057610141600160a060020a0360043516602435610339565b604080519115158252519081900360200190f35b34610000576101626103a4565b60408051918252519081900360200190f35b3461000057610141600160a060020a03600435811690602435166044356103aa565b604080519115158252519081900360200190f35b34610000576101ba6004356104a7565b005b34610000576101c9610527565b6040805160ff9092168252519081900360200190f35b3461000057610162600160a060020a036004351661052c565b60408051918252519081900360200190f35b34610000576100a561054b565b6040805160208082528351818301528351919283929083019185019080838382156100eb575b8051825260208311156100eb57601f1990920191602091820191016100cb565b505050905090810190601f1680156101175780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b3461000057610141600160a060020a0360043516602435610582565b604080519115158252519081900360200190f35b6101ba610634565b005b3461000057610162600160a060020a0360043581169060243516610683565b60408051918252519081900360200190f35b60408051808201909152600b81527f457468657220546f6b656e000000000000000000000000000000000000000000602082015281565b600160a060020a03338116600081815260016020908152604080832094871680845294825280832086905580518681529051929493927f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925929181900390910190a35060015b92915050565b60025481565b600160a060020a0383166000908152602081905260408120546103cd90836106b0565b600160a060020a03808616600090815260208181526040808320949094556001815283822033909316825291909152205461040890836106b0565b600160a060020a0380861660009081526001602090815260408083203385168452825280832094909455918616815290819052205461044790836106c9565b600160a060020a038085166000818152602081815260409182902094909455805186815290519193928816927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef92918290030190a35060015b9392505050565b600160a060020a0333166000908152602081905260409020546104ca90826106b0565b600160a060020a0333166000908152602081905260409020556002546104f090826106b0565b600255604051600160a060020a0333169082156108fc029083906000818181858888f19350505050151561052357610000565b5b50565b601281565b600160a060020a0381166000908152602081905260409020545b919050565b60408051808201909152600481527f5745544800000000000000000000000000000000000000000000000000000000602082015281565b600160a060020a0333166000908152602081905260408120546105a590836106b0565b600160a060020a0333811660009081526020819052604080822093909355908516815220546105d490836106c9565b600160a060020a03808516600081815260208181526040918290209490945580518681529051919333909316927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef92918290030190a35060015b92915050565b600160a060020a03331660009081526020819052604090205461065790346106c9565b600160a060020a03331660009081526020819052604090205560025461067d90346106c9565b6002555b565b600160a060020a038083166000908152600160209081526040808320938516835292905220545b92915050565b60006106be838311156106f1565b508082035b92915050565b60008282016106e68482108015906106e15750838210155b6106f1565b8091505b5092915050565b80151561052357610000565b5b505600a165627a7a72305820c7cc457bf87c8b3047275eaa71935a1612af007e4bc77d832c588245805374480029",
+  "unlinked_binary": "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",
   "networks": {
     "42": {
       "links": {},
@@ -330,10 +330,10 @@
           "type": "event"
         }
       },
-      "updated_at": 1495030736786,
+      "updated_at": 1498588231356,
       "address": "0x48bacb9266a570d521063ef5dd96e61686dbe788"
     }
   },
   "schema_version": "0.0.5",
-  "updated_at": 1496294576956
+  "updated_at": 1498588231356
 }
\ No newline at end of file
diff --git a/src/artifacts/Mintable.json b/src/artifacts/Mintable.json
index eed87f498..fc4b93cae 100644
--- a/src/artifacts/Mintable.json
+++ b/src/artifacts/Mintable.json
@@ -182,8 +182,8 @@
       "type": "event"
     }
   ],
-  "unlinked_binary": "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",
+  "unlinked_binary": "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",
   "networks": {},
   "schema_version": "0.0.5",
-  "updated_at": 1496294434244
+  "updated_at": 1498588228068
 }
\ No newline at end of file
diff --git a/src/artifacts/Proxy.json b/src/artifacts/Proxy.json
index e7d4ba714..c001cee5b 100644
--- a/src/artifacts/Proxy.json
+++ b/src/artifacts/Proxy.json
@@ -177,7 +177,7 @@
       "type": "event"
     }
   ],
-  "unlinked_binary": "0x60606040525b60008054600160a060020a03191633600160a060020a03161790555b5b610701806100316000396000f300606060405236156100725763ffffffff60e060020a60003504166315dacbea811461007757806342f1181e146100b3578063494503d4146100e0578063707129391461010c5780638da5cb5b14610139578063b918161114610162578063d39de6e91461018f578063f2fde38b146101f7575b610000565b346100005761009f600160a060020a0360043581169060243581169060443516606435610212565b604080519115158252519081900360200190f35b346100005761009f600160a060020a03600435166102d8565b604080519115158252519081900360200190f35b34610000576100f06004356103f5565b60408051600160a060020a039092168252519081900360200190f35b346100005761009f600160a060020a0360043516610425565b604080519115158252519081900360200190f35b34610000576100f06105ee565b60408051600160a060020a039092168252519081900360200190f35b346100005761009f600160a060020a03600435166105fd565b604080519115158252519081900360200190f35b346100005761019c610612565b60408051602080825283518183015283519192839290830191858101910280838382156101e4575b8051825260208311156101e457601f1990920191602091820191016101c4565b5050509050019250505060405180910390f35b3461000057610210600160a060020a036004351661067d565b005b600160a060020a03331660009081526001602052604081205460ff16151561023957610000565b604080516000602091820181905282517f23b872dd000000000000000000000000000000000000000000000000000000008152600160a060020a0388811660048301528781166024830152604482018790529351938916936323b872dd9360648084019491938390030190829087803b156100005760325a03f11561000057505060405151151590506102cb57610000565b5060015b5b949350505050565b6000805433600160a060020a039081169116146102f457610000565b600160a060020a038216600090815260016020526040902054829060ff161561031c57610000565b600160a060020a0383166000908152600160208190526040909120805460ff191682179055600280549182018082559091908281838015829011610385576000838152602090206103859181019083015b80821115610381576000815560010161036d565b5090565b5b505050916000526020600020900160005b81546101009190910a600160a060020a0381810219909216878316918202179092556040513390911692507f94bb87f4c15c4587ff559a7584006fa01ddf9299359be6b512b94527aa961aca90600090a3600191505b5b505b919050565b600281815481101561000057906000526020600020900160005b915054906101000a9004600160a060020a031681565b60008054819033600160a060020a0390811691161461044357610000565b600160a060020a038316600090815260016020526040902054839060ff16151561046c57610000565b600160a060020a0384166000908152600160205260408120805460ff1916905591505b6002548210156105a75783600160a060020a0316600283815481101561000057906000526020600020900160005b9054906101000a9004600160a060020a0316600160a060020a0316141561059b576002805460001981019081101561000057906000526020600020900160005b9054906101000a9004600160a060020a0316600283815481101561000057906000526020600020900160005b6101000a815481600160a060020a030219169083600160a060020a031602179055506001600281818054905003915081815481835581811511610591576000838152602090206105919181019083015b80821115610381576000815560010161036d565b5090565b5b505050506105a7565b5b60019091019061048f565b604051600160a060020a0333811691908616907ff5b347a1e40749dd050f5f07fbdbeb7e3efa9756903044dd29401fd1d4bb4a1c90600090a3600192505b5b505b50919050565b600054600160a060020a031681565b60016020526000908152604090205460ff1681565b60408051602081810183526000825260028054845181840281018401909552808552929392909183018282801561067257602002820191906000526020600020905b8154600160a060020a03168152600190910190602001808311610654575b505050505090505b90565b60005433600160a060020a0390811691161461069857610000565b600160a060020a038116156106d0576000805473ffffffffffffffffffffffffffffffffffffffff1916600160a060020a0383161790555b5b5b505600a165627a7a72305820e094d2460f9f11db4e36cf6e7af1eb1f6fb883275fea375d814c23e81802753b0029",
+  "unlinked_binary": "0x60606040525b60008054600160a060020a03191633600160a060020a03161790555b5b610727806100316000396000f300606060405236156100725763ffffffff60e060020a60003504166315dacbea811461007457806342f1181e146100b3578063494503d4146100e357806370712939146101125780638da5cb5b14610142578063b91816111461016e578063d39de6e91461019e578063f2fde38b14610209575bfe5b341561007c57fe5b61009f600160a060020a0360043581169060243581169060443516606435610227565b604080519115158252519081900360200190f35b34156100bb57fe5b61009f600160a060020a03600435166102e0565b604080519115158252519081900360200190f35b34156100eb57fe5b6100f66004356103c9565b60408051600160a060020a039092168252519081900360200190f35b341561011a57fe5b61009f600160a060020a03600435166103fb565b604080519115158252519081900360200190f35b341561014a57fe5b6100f661059b565b60408051600160a060020a039092168252519081900360200190f35b341561017657fe5b61009f600160a060020a03600435166105aa565b604080519115158252519081900360200190f35b34156101a657fe5b6101ae6105bf565b60408051602080825283518183015283519192839290830191858101910280838382156101f6575b8051825260208311156101f657601f1990920191602091820191016101d6565b5050509050019250505060405180910390f35b341561021157fe5b610225600160a060020a0360043516610628565b005b600160a060020a03331660009081526001602052604081205460ff16151561024f5760006000fd5b6040805160006020918201819052825160e060020a6323b872dd028152600160a060020a0388811660048301528781166024830152604482018790529351938916936323b872dd9360648084019491938390030190829087803b15156102b157fe5b6102c65a03f115156102bf57fe5b505060405151151590506102d35760006000fd5b5060015b5b949350505050565b6000805433600160a060020a039081169116146102fd5760006000fd5b600160a060020a038216600090815260016020526040902054829060ff16156103265760006000fd5b600160a060020a0383166000908152600160208190526040909120805460ff191682179055600280549091810161035d8382610674565b916000526020600020900160005b81546101009190910a600160a060020a0381810219909216878316918202179092556040513390911692507f94bb87f4c15c4587ff559a7584006fa01ddf9299359be6b512b94527aa961aca90600090a3600191505b5b505b919050565b60028054829081106103d757fe5b906000526020600020900160005b915054906101000a9004600160a060020a031681565b60008054819033600160a060020a0390811691161461041a5760006000fd5b600160a060020a038316600090815260016020526040902054839060ff1615156104445760006000fd5b600160a060020a0384166000908152600160205260408120805460ff1916905591505b6002548210156105545783600160a060020a031660028381548110151561048a57fe5b906000526020600020900160005b9054906101000a9004600160a060020a0316600160a060020a03161415610548576002805460001981019081106104cb57fe5b906000526020600020900160005b9054906101000a9004600160a060020a03166002838154811015156104fa57fe5b906000526020600020900160005b6101000a815481600160a060020a030219169083600160a060020a0316021790555060016002818180549050039150816105429190610674565b50610554565b5b600190910190610467565b604051600160a060020a0333811691908616907ff5b347a1e40749dd050f5f07fbdbeb7e3efa9756903044dd29401fd1d4bb4a1c90600090a3600192505b5b505b50919050565b600054600160a060020a031681565b60016020526000908152604090205460ff1681565b6105c76106c8565b600280548060200260200160405190810160405280929190818152602001828054801561061d57602002820191906000526020600020905b8154600160a060020a031681526001909101906020018083116105ff575b505050505090505b90565b60005433600160a060020a039081169116146106445760006000fd5b600160a060020a0381161561066f5760008054600160a060020a031916600160a060020a0383161790555b5b5b50565b815481835581811511610698576000838152602090206106989181019083016106da565b5b505050565b815481835581811511610698576000838152602090206106989181019083016106da565b5b505050565b60408051602081019091526000815290565b61062591905b808211156106f457600081556001016106e0565b5090565b905600a165627a7a7230582021aadf834398ddc9f252eb0b3ab6ddea131aa7bca5d904d429a49ab48bcbe2910029",
   "networks": {
     "42": {
       "links": {},
@@ -258,10 +258,10 @@
           "type": "event"
         }
       },
-      "updated_at": 1495030736781,
+      "updated_at": 1498588231340,
       "address": "0x871dd7c2b4b25e1aa18728e9d5f2af4c4e431f5c"
     }
   },
   "schema_version": "0.0.5",
-  "updated_at": 1496294576942
+  "updated_at": 1498588231340
 }
\ No newline at end of file
diff --git a/src/artifacts/Token.json b/src/artifacts/Token.json
index 4894f5be5..f44de34b8 100644
--- a/src/artifacts/Token.json
+++ b/src/artifacts/Token.json
@@ -169,8 +169,8 @@
       "type": "event"
     }
   ],
-  "unlinked_binary": "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",
+  "unlinked_binary": "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",
   "networks": {},
   "schema_version": "0.0.5",
-  "updated_at": 1496294434247
+  "updated_at": 1498588228068
 }
\ No newline at end of file
diff --git a/src/artifacts/TokenRegistry.json b/src/artifacts/TokenRegistry.json
index ef039b85c..6d8bbfd64 100644
--- a/src/artifacts/TokenRegistry.json
+++ b/src/artifacts/TokenRegistry.json
@@ -592,7 +592,7 @@
       "type": "event"
     }
   ],
-  "unlinked_binary": "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",
+  "unlinked_binary": "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",
   "networks": {
     "42": {
       "links": {},
@@ -993,10 +993,10 @@
           "type": "event"
         }
       },
-      "updated_at": 1495030736781,
+      "updated_at": 1498588231341,
       "address": "0x0b1ba0af832d7c05fd64161e0db78e85978e8082"
     }
   },
   "schema_version": "0.0.5",
-  "updated_at": 1496294576947
+  "updated_at": 1498588231341
 }
\ No newline at end of file
diff --git a/src/artifacts/Exchange.json b/src/artifacts/exchange/Exchange_v1.json
index bcb8aece0..4b7321970 100644
--- a/src/artifacts/Exchange.json
+++ b/src/artifacts/exchange/Exchange_v1.json
@@ -606,7 +606,7 @@
       "type": "event"
     }
   ],
-  "unlinked_binary": "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",
+  "unlinked_binary": "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",
   "networks": {
     "42": {
       "links": {},
@@ -1048,12 +1048,121 @@
           ],
           "name": "LogError",
           "type": "event"
+        },
+        "0x0d0b9391970d9a25552f37d436d2aae2925e2bfe1b2a923754bada030c498cb3": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "maker",
+              "type": "address"
+            },
+            {
+              "indexed": false,
+              "name": "taker",
+              "type": "address"
+            },
+            {
+              "indexed": true,
+              "name": "feeRecipient",
+              "type": "address"
+            },
+            {
+              "indexed": false,
+              "name": "tokenM",
+              "type": "address"
+            },
+            {
+              "indexed": false,
+              "name": "tokenT",
+              "type": "address"
+            },
+            {
+              "indexed": false,
+              "name": "filledValueM",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "filledValueT",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "feeMPaid",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "feeTPaid",
+              "type": "uint256"
+            },
+            {
+              "indexed": true,
+              "name": "tokens",
+              "type": "bytes32"
+            },
+            {
+              "indexed": false,
+              "name": "orderHash",
+              "type": "bytes32"
+            }
+          ],
+          "name": "LogFill",
+          "type": "event"
+        },
+        "0x67d66f160bc93d925d05dae1794c90d2d6d6688b29b84ff069398a9b04587131": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "maker",
+              "type": "address"
+            },
+            {
+              "indexed": true,
+              "name": "feeRecipient",
+              "type": "address"
+            },
+            {
+              "indexed": false,
+              "name": "tokenM",
+              "type": "address"
+            },
+            {
+              "indexed": false,
+              "name": "tokenT",
+              "type": "address"
+            },
+            {
+              "indexed": false,
+              "name": "cancelledValueM",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "cancelledValueT",
+              "type": "uint256"
+            },
+            {
+              "indexed": true,
+              "name": "tokens",
+              "type": "bytes32"
+            },
+            {
+              "indexed": false,
+              "name": "orderHash",
+              "type": "bytes32"
+            }
+          ],
+          "name": "LogCancel",
+          "type": "event"
         }
       },
-      "updated_at": 1495030736784,
+      "updated_at": 1498588231353,
       "address": "0xb69e673309512a9d726f87304c6984054f87a93b"
     }
   },
   "schema_version": "0.0.5",
-  "updated_at": 1496294576952
+  "updated_at": 1498588231353
 }
\ No newline at end of file
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 7ee7a04ee..2d46b99de 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -8,6 +8,7 @@ import {
     ExchangeContract,
     ExchangeContractErrCodes,
     ExchangeContractErrs,
+    ZeroExError,
     OrderValues,
     OrderAddresses,
     Order,
@@ -28,11 +29,14 @@ import {
     LogCancelContractEventArgs,
     EventCallback,
     ContractEventArg,
+    ExchangeContractByAddress,
+    ContractArtifact,
 } from '../types';
 import {assert} from '../utils/assert';
 import {utils} from '../utils/utils';
 import {ContractWrapper} from './contract_wrapper';
-import * as ExchangeArtifacts from '../artifacts/Exchange.json';
+import {ProxyWrapper} from './proxy_wrapper';
+import {ExchangeArtifactsByName} from '../exchange_artifacts_by_name';
 import {ecSignatureSchema} from '../schemas/ec_signature_schema';
 import {signedOrdersSchema} from '../schemas/signed_orders_schema';
 import {orderFillRequestsSchema} from '../schemas/order_fill_requests_schema';
@@ -56,9 +60,10 @@ export class ExchangeWrapper extends ContractWrapper {
         [ExchangeContractErrCodes.ERROR_FILL_TRUNCATION]: ExchangeContractErrs.ORDER_FILL_ROUNDING_ERROR,
         [ExchangeContractErrCodes.ERROR_FILL_BALANCE_ALLOWANCE]: ExchangeContractErrs.FILL_BALANCE_ALLOWANCE_ERROR,
     };
-    private _exchangeContractIfExists?: ExchangeContract;
+    private _exchangeContractByAddress: ExchangeContractByAddress;
     private _exchangeLogEventEmitters: ContractEventEmitter[];
     private _tokenWrapper: TokenWrapper;
+    private _proxyWrapper: ProxyWrapper;
     private static _getOrderAddressesAndValues(order: Order): [OrderAddresses, OrderValues] {
         const orderAddresses: OrderAddresses = [
             order.maker,
@@ -77,27 +82,31 @@ export class ExchangeWrapper extends ContractWrapper {
         ];
         return [orderAddresses, orderValues];
     }
-    constructor(web3Wrapper: Web3Wrapper, tokenWrapper: TokenWrapper) {
+    constructor(web3Wrapper: Web3Wrapper, tokenWrapper: TokenWrapper, proxyWrapper: ProxyWrapper) {
         super(web3Wrapper);
         this._tokenWrapper = tokenWrapper;
+        this._proxyWrapper = proxyWrapper;
         this._exchangeLogEventEmitters = [];
+        this._exchangeContractByAddress = {};
     }
-    public async invalidateContractInstanceAsync(): Promise<void> {
+    public async invalidateContractInstancesAsync(): Promise<void> {
         await this.stopWatchingAllEventsAsync();
-        delete this._exchangeContractIfExists;
+        this._exchangeContractByAddress = {};
     }
     /**
      * Returns the unavailable takerAmount of an order. Unavailable amount is defined as the total
      * amount that has been filled or cancelled. The remaining takerAmount can be calculated by
      * subtracting the unavailable amount from the total order takerAmount.
-     * @param   orderHash    The hex encoded orderHash for which you would like to retrieve the
-     *                       unavailable takerAmount.
+     * @param   orderHash               The hex encoded orderHash for which you would like to retrieve the
+     *                                  unavailable takerAmount.
+     * @param   exchangeContractAddress The hex encoded address of the Exchange contract to use.
      * @return  The amount of the order (in taker tokens) that has either been filled or canceled.
      */
-    public async getUnavailableTakerAmountAsync(orderHash: string): Promise<BigNumber.BigNumber> {
+    public async getUnavailableTakerAmountAsync(orderHash: string,
+                                                exchangeContractAddress: string): Promise<BigNumber.BigNumber> {
         assert.isValidOrderHash('orderHash', orderHash);
 
-        const exchangeContract = await this._getExchangeContractAsync();
+        const exchangeContract = await this._getExchangeContractAsync(exchangeContractAddress);
         let unavailableAmountInBaseUnits = await exchangeContract.getUnavailableValueT.call(orderHash);
         // Wrap BigNumbers returned from web3 with our own (later) version of BigNumber
         unavailableAmountInBaseUnits = new BigNumber(unavailableAmountInBaseUnits);
@@ -106,12 +115,14 @@ export class ExchangeWrapper extends ContractWrapper {
     /**
      * Retrieve the takerAmount of an order that has already been filled.
      * @param   orderHash    The hex encoded orderHash for which you would like to retrieve the filled takerAmount.
+     * @param   exchangeContractAddress The hex encoded address of the Exchange contract to use.
      * @return  The amount of the order (in taker tokens) that has already been filled.
      */
-    public async getFilledTakerAmountAsync(orderHash: string): Promise<BigNumber.BigNumber> {
+    public async getFilledTakerAmountAsync(orderHash: string,
+                                           exchangeContractAddress: string): Promise<BigNumber.BigNumber> {
         assert.isValidOrderHash('orderHash', orderHash);
 
-        const exchangeContract = await this._getExchangeContractAsync();
+        const exchangeContract = await this._getExchangeContractAsync(exchangeContractAddress);
         let fillAmountInBaseUnits = await exchangeContract.filled.call(orderHash);
         // Wrap BigNumbers returned from web3 with our own (later) version of BigNumber
         fillAmountInBaseUnits = new BigNumber(fillAmountInBaseUnits);
@@ -121,12 +132,14 @@ export class ExchangeWrapper extends ContractWrapper {
      * Retrieve the takerAmount of an order that has been cancelled.
      * @param   orderHash    The hex encoded orderHash for which you would like to retrieve the
      *                       cancelled takerAmount.
+     * @param   exchangeContractAddress The hex encoded address of the Exchange contract to use.
      * @return  The amount of the order (in taker tokens) that has been cancelled.
      */
-    public async getCanceledTakerAmountAsync(orderHash: string): Promise<BigNumber.BigNumber> {
+    public async getCanceledTakerAmountAsync(orderHash: string,
+                                             exchangeContractAddress: string): Promise<BigNumber.BigNumber> {
         assert.isValidOrderHash('orderHash', orderHash);
 
-        const exchangeContract = await this._getExchangeContractAsync();
+        const exchangeContract = await this._getExchangeContractAsync(exchangeContractAddress);
         let cancelledAmountInBaseUnits = await exchangeContract.cancelled.call(orderHash);
         // Wrap BigNumbers returned from web3 with our own (later) version of BigNumber
         cancelledAmountInBaseUnits = new BigNumber(cancelledAmountInBaseUnits);
@@ -155,7 +168,7 @@ export class ExchangeWrapper extends ContractWrapper {
         assert.isBoolean('shouldCheckTransfer', shouldCheckTransfer);
         await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
 
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(signedOrder.exchangeContractAddress);
         await this._validateFillOrderAndThrowIfInvalidAsync(signedOrder, takerTokenFillAmount, takerAddress);
 
         const [orderAddresses, orderValues] = ExchangeWrapper._getOrderAddressesAndValues(signedOrder);
@@ -208,12 +221,15 @@ export class ExchangeWrapper extends ContractWrapper {
     @decorators.contractCallErrorHandler
     public async fillOrdersUpToAsync(signedOrders: SignedOrder[], takerTokenFillAmount: BigNumber.BigNumber,
                                      shouldCheckTransfer: boolean, takerAddress: string): Promise<BigNumber.BigNumber> {
+        assert.doesConformToSchema('signedOrders', signedOrders, signedOrdersSchema);
         const takerTokenAddresses = _.map(signedOrders, signedOrder => signedOrder.takerTokenAddress);
         assert.hasAtMostOneUniqueValue(takerTokenAddresses,
-                                        ExchangeContractErrs.MULTIPLE_TAKER_TOKENS_IN_FILL_UP_TO_DISALLOWED);
+                                       ExchangeContractErrs.MULTIPLE_TAKER_TOKENS_IN_FILL_UP_TO_DISALLOWED);
+        const exchangeContractAddresses = _.map(signedOrders, signedOrder => signedOrder.exchangeContractAddress);
+        assert.hasAtMostOneUniqueValue(exchangeContractAddresses,
+                                       ExchangeContractErrs.BATCH_ORDERS_MUST_HAVE_SAME_EXCHANGE_ADDRESS);
         assert.isBigNumber('takerTokenFillAmount', takerTokenFillAmount);
         assert.isBoolean('shouldCheckTransfer', shouldCheckTransfer);
-        assert.doesConformToSchema('signedOrders', signedOrders, signedOrdersSchema);
         await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
         for (const signedOrder of signedOrders) {
             await this._validateFillOrderAndThrowIfInvalidAsync(
@@ -236,7 +252,7 @@ export class ExchangeWrapper extends ContractWrapper {
             orderAddressesValuesAndSignatureArray,
         );
 
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(exchangeContractAddresses[0]);
         const gas = await exchangeInstance.fillUpTo.estimateGas(
             orderAddressesArray,
             orderValuesArray,
@@ -285,9 +301,15 @@ export class ExchangeWrapper extends ContractWrapper {
     @decorators.contractCallErrorHandler
     public async batchFillOrderAsync(orderFillRequests: OrderFillRequest[],
                                      shouldCheckTransfer: boolean, takerAddress: string): Promise<void> {
+        assert.doesConformToSchema('orderFillRequests', orderFillRequests, orderFillRequestsSchema);
+        const exchangeContractAddresses = _.map(
+            orderFillRequests,
+            orderFillRequest => orderFillRequest.signedOrder.exchangeContractAddress,
+        );
+        assert.hasAtMostOneUniqueValue(exchangeContractAddresses,
+                                       ExchangeContractErrs.BATCH_ORDERS_MUST_HAVE_SAME_EXCHANGE_ADDRESS);
         assert.isBoolean('shouldCheckTransfer', shouldCheckTransfer);
         await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
-        assert.doesConformToSchema('orderFillRequests', orderFillRequests, orderFillRequestsSchema);
         for (const orderFillRequest of orderFillRequests) {
             await this._validateFillOrderAndThrowIfInvalidAsync(
                 orderFillRequest.signedOrder, orderFillRequest.takerTokenFillAmount, takerAddress);
@@ -310,7 +332,7 @@ export class ExchangeWrapper extends ContractWrapper {
             orderAddressesValuesAmountsAndSignatureArray,
         );
 
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(exchangeContractAddresses[0]);
         const gas = await exchangeInstance.batchFill.estimateGas(
             orderAddressesArray,
             orderValuesArray,
@@ -354,7 +376,7 @@ export class ExchangeWrapper extends ContractWrapper {
         assert.isBigNumber('takerTokenFillAmount', takerTokenFillAmount);
         await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
 
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(signedOrder.exchangeContractAddress);
         await this._validateFillOrderAndThrowIfInvalidAsync(signedOrder, takerTokenFillAmount, takerAddress);
 
         await this._validateFillOrKillOrderAndThrowIfInvalidAsync(signedOrder, exchangeInstance.address,
@@ -397,9 +419,18 @@ export class ExchangeWrapper extends ContractWrapper {
     @decorators.contractCallErrorHandler
     public async batchFillOrKillAsync(orderFillOrKillRequests: OrderFillOrKillRequest[],
                                       takerAddress: string): Promise<void> {
-        await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
         assert.doesConformToSchema('orderFillOrKillRequests', orderFillOrKillRequests, orderFillOrKillRequestsSchema);
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeContractAddresses = _.map(
+            orderFillOrKillRequests,
+            orderFillOrKillRequest => orderFillOrKillRequest.signedOrder.exchangeContractAddress,
+        );
+        assert.hasAtMostOneUniqueValue(exchangeContractAddresses,
+                                       ExchangeContractErrs.BATCH_ORDERS_MUST_HAVE_SAME_EXCHANGE_ADDRESS);
+        await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
+        if (_.isEmpty(orderFillOrKillRequests)) {
+            return; // no-op
+        }
+        const exchangeInstance = await this._getExchangeContractAsync(exchangeContractAddresses[0]);
         for (const request of orderFillOrKillRequests) {
             await this._validateFillOrKillOrderAndThrowIfInvalidAsync(request.signedOrder, exchangeInstance.address,
                                                                      request.fillTakerAmount);
@@ -458,7 +489,7 @@ export class ExchangeWrapper extends ContractWrapper {
         assert.isBigNumber('takerTokenCancelAmount', takerTokenCancelAmount);
         await assert.isSenderAddressAsync('order.maker', order.maker, this._web3Wrapper);
 
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(order.exchangeContractAddress);
         await this._validateCancelOrderAndThrowIfInvalidAsync(order, takerTokenCancelAmount);
 
         const [orderAddresses, orderValues] = ExchangeWrapper._getOrderAddressesAndValues(order);
@@ -492,12 +523,18 @@ export class ExchangeWrapper extends ContractWrapper {
      */
     @decorators.contractCallErrorHandler
     public async batchCancelOrderAsync(orderCancellationRequests: OrderCancellationRequest[]): Promise<void> {
+        assert.doesConformToSchema('orderCancellationRequests', orderCancellationRequests,
+                                   orderCancellationRequestsSchema);
+        const exchangeContractAddresses = _.map(
+            orderCancellationRequests,
+            orderCancellationRequest => orderCancellationRequest.order.exchangeContractAddress,
+        );
+        assert.hasAtMostOneUniqueValue(exchangeContractAddresses,
+                                       ExchangeContractErrs.BATCH_ORDERS_MUST_HAVE_SAME_EXCHANGE_ADDRESS);
         const makers = _.map(orderCancellationRequests, cancellationRequest => cancellationRequest.order.maker);
         assert.hasAtMostOneUniqueValue(makers, ExchangeContractErrs.MULTIPLE_MAKERS_IN_SINGLE_CANCEL_BATCH_DISALLOWED);
         const maker = makers[0];
         await assert.isSenderAddressAsync('maker', maker, this._web3Wrapper);
-        assert.doesConformToSchema('orderCancellationRequests', orderCancellationRequests,
-                                   orderCancellationRequestsSchema);
         for (const cancellationRequest of orderCancellationRequests) {
             await this._validateCancelOrderAndThrowIfInvalidAsync(
                 cancellationRequest.order, cancellationRequest.takerTokenCancelAmount,
@@ -506,7 +543,7 @@ export class ExchangeWrapper extends ContractWrapper {
         if (_.isEmpty(orderCancellationRequests)) {
             return; // no-op
         }
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(exchangeContractAddresses[0]);
         const orderAddressesValuesAndTakerTokenCancelAmounts = _.map(orderCancellationRequests, cancellationRequest => {
             return [
                 ...ExchangeWrapper._getOrderAddressesAndValues(cancellationRequest.order),
@@ -537,16 +574,17 @@ export class ExchangeWrapper extends ContractWrapper {
     }
     /**
      * Subscribe to an event type emitted by the Exchange smart contract
-     * @param   eventName           The exchange contract event you would like to subscribe to.
-     * @param   subscriptionOpts    Subscriptions options that let you configure the subscription.
-     * @param   indexFilterValues   An object where the keys are indexed args returned by the event and
-     *                              the value is the value you are interested in. E.g `{maker: aUserAddressHex}`
+     * @param   eventName               The exchange contract event you would like to subscribe to.
+     * @param   subscriptionOpts        Subscriptions options that let you configure the subscription.
+     * @param   indexFilterValues       An object where the keys are indexed args returned by the event and
+     *                                  the value is the value you are interested in. E.g `{maker: aUserAddressHex}`
+     * @param   exchangeContractAddress The hex encoded address of the Exchange contract to use.
      * @return                      ContractEventEmitter object
      */
     public async subscribeAsync(eventName: ExchangeEvents, subscriptionOpts: SubscriptionOpts,
-                                indexFilterValues: IndexedFilterValues):
+                                indexFilterValues: IndexedFilterValues, exchangeContractAddress: string):
                                 Promise<ContractEventEmitter> {
-        const exchangeContract = await this._getExchangeContractAsync();
+        const exchangeContract = await this._getExchangeContractAsync(exchangeContractAddress);
         let createLogEvent: CreateContractEvent;
         switch (eventName) {
             case ExchangeEvents.LogFill:
@@ -568,13 +606,41 @@ export class ExchangeWrapper extends ContractWrapper {
         return eventEmitter;
     }
     /**
-     * Returns the ethereum address of the current exchange contract
+     * Returns the ethereum addresses of all available exchange contracts
      * on the network that the provided web3 instance is connected to
-     * @return  The ethereum address of the current exchange contract.
+     * @return  The ethereum addresses of all available exchange contracts.
      */
-    public async getContractAddressAsync(): Promise<string> {
-       const exchangeContract = await this._getExchangeContractAsync();
-       return exchangeContract.address;
+    public async getAvailableContractAddressesAsync(): Promise<string[]> {
+        const networkId = await this._web3Wrapper.getNetworkIdIfExistsAsync();
+        if (_.isUndefined(networkId)) {
+            return [];
+        } else {
+            const exchangeArtifacts = _.values(ExchangeArtifactsByName);
+            const networkSpecificExchangeArtifacts = _.compact(_.map(
+                exchangeArtifacts, exchangeArtifact => exchangeArtifact.networks[networkId]));
+            const exchangeAddresses = _.map(
+                networkSpecificExchangeArtifacts,
+                networkSpecificExchangeArtifact => networkSpecificExchangeArtifact.address,
+            );
+            return exchangeAddresses;
+        }
+    }
+    /**
+     * Returns the ethereum addresses of all available exchange contracts
+     * on the network that the provided web3 instance is connected to
+     * that are currently authorized on the Proxy contract
+     * @return  The ethereum addresses of all available and authorized exchange contract.
+     */
+    public async getProxyAuthorizedContractAddressesAsync(): Promise<string[]> {
+        const exchangeContractAddresses = await this.getAvailableContractAddressesAsync();
+        const proxyAuthorizedExchangeContractAddresses = [];
+        for (const exchangeContractAddress of exchangeContractAddresses) {
+            const isAuthorized = await this._isExchangeContractAddressProxyAuthorizedAsync(exchangeContractAddress);
+            if (isAuthorized) {
+                proxyAuthorizedExchangeContractAddresses.push(exchangeContractAddress);
+            }
+        }
+        return proxyAuthorizedExchangeContractAddresses;
     }
     /**
      * Stops watching for all exchange events
@@ -585,6 +651,10 @@ export class ExchangeWrapper extends ContractWrapper {
         await Promise.all(stopWatchingPromises);
         this._exchangeLogEventEmitters = [];
     }
+    private async _isExchangeContractAddressProxyAuthorizedAsync(exchangeContractAddress: string): Promise<boolean> {
+        const isAuthorized = await this._proxyWrapper.isAuthorizedAsync(exchangeContractAddress);
+        return isAuthorized;
+    }
     private _wrapEventEmitter(event: ContractEventObj): ContractEventEmitter {
         const watch = (eventCallback: EventCallback) => {
             const bignumberWrappingEventCallback = this._wrapEventCallback(eventCallback);
@@ -617,12 +687,13 @@ export class ExchangeWrapper extends ContractWrapper {
         return bignumberWrappingEventCallback;
     }
     private async _isValidSignatureUsingContractCallAsync(dataHex: string, ecSignature: ECSignature,
-                                                          signerAddressHex: string): Promise<boolean> {
+                                                          signerAddressHex: string,
+                                                          exchangeContractAddress: string): Promise<boolean> {
         assert.isHexString('dataHex', dataHex);
         assert.doesConformToSchema('ecSignature', ecSignature, ecSignatureSchema);
         assert.isETHAddressHex('signerAddressHex', signerAddressHex);
 
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(exchangeContractAddress);
 
         const isValidSignature = await exchangeInstance.isValidSignature.call(
             signerAddressHex,
@@ -633,13 +704,8 @@ export class ExchangeWrapper extends ContractWrapper {
         );
         return isValidSignature;
     }
-    private async _getOrderHashHexAsync(order: Order|SignedOrder): Promise<string> {
-        const exchangeInstance = await this._getExchangeContractAsync();
-        const orderHashHex = utils.getOrderHashHex(order, exchangeInstance.address);
-        return orderHashHex;
-    }
     private async _getOrderHashHexUsingContractCallAsync(order: Order|SignedOrder): Promise<string> {
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(order.exchangeContractAddress);
         const [orderAddresses, orderValues] = ExchangeWrapper._getOrderAddressesAndValues(order);
         const orderHashHex = await exchangeInstance.getOrderHash.call(orderAddresses, orderValues);
         return orderHashHex;
@@ -657,12 +723,13 @@ export class ExchangeWrapper extends ContractWrapper {
         if (signedOrder.expirationUnixTimestampSec.lessThan(currentUnixTimestampSec)) {
             throw new Error(ExchangeContractErrs.ORDER_FILL_EXPIRED);
         }
-        const zrxTokenAddress = await this._getZRXTokenAddressAsync();
+        const zrxTokenAddress = await this._getZRXTokenAddressAsync(signedOrder.exchangeContractAddress);
         await this._validateFillOrderBalancesAndAllowancesAndThrowIfInvalidAsync(signedOrder, fillTakerAmount,
                                                                senderAddress, zrxTokenAddress);
 
         const wouldRoundingErrorOccur = await this._isRoundingErrorAsync(
             signedOrder.takerTokenAmount, fillTakerAmount, signedOrder.makerTokenAmount,
+            signedOrder.exchangeContractAddress,
         );
         if (wouldRoundingErrorOccur) {
             throw new Error(ExchangeContractErrs.ORDER_FILL_ROUNDING_ERROR);
@@ -673,8 +740,8 @@ export class ExchangeWrapper extends ContractWrapper {
         if (takerTokenCancelAmount.eq(0)) {
             throw new Error(ExchangeContractErrs.ORDER_CANCEL_AMOUNT_ZERO);
         }
-        const orderHash = await this._getOrderHashHexAsync(order);
-        const unavailableAmount = await this.getUnavailableTakerAmountAsync(orderHash);
+        const orderHash = utils.getOrderHashHex(order);
+        const unavailableAmount = await this.getUnavailableTakerAmountAsync(orderHash, order.exchangeContractAddress);
         if (order.takerTokenAmount.minus(unavailableAmount).eq(0)) {
             throw new Error(ExchangeContractErrs.ORDER_ALREADY_CANCELLED_OR_FILLED);
         }
@@ -684,11 +751,11 @@ export class ExchangeWrapper extends ContractWrapper {
         }
     }
     private async _validateFillOrKillOrderAndThrowIfInvalidAsync(signedOrder: SignedOrder,
-                                                                 exchangeAddress: string,
+                                                                 exchangeContractAddress: string,
                                                                  fillTakerAmount: BigNumber.BigNumber) {
         // Check that fillValue available >= fillTakerAmount
-        const orderHashHex = utils.getOrderHashHex(signedOrder, exchangeAddress);
-        const unavailableTakerAmount = await this.getUnavailableTakerAmountAsync(orderHashHex);
+        const orderHashHex = utils.getOrderHashHex(signedOrder);
+        const unavailableTakerAmount = await this.getUnavailableTakerAmountAsync(orderHashHex, exchangeContractAddress);
         const remainingTakerAmount = signedOrder.takerTokenAmount.minus(unavailableTakerAmount);
         if (remainingTakerAmount < fillTakerAmount) {
             throw new Error(ExchangeContractErrs.INSUFFICIENT_REMAINING_FILL_AMOUNT);
@@ -765,24 +832,41 @@ export class ExchangeWrapper extends ContractWrapper {
     }
     private async _isRoundingErrorAsync(takerTokenAmount: BigNumber.BigNumber,
                                         fillTakerAmount: BigNumber.BigNumber,
-                                        makerTokenAmount: BigNumber.BigNumber): Promise<boolean> {
+                                        makerTokenAmount: BigNumber.BigNumber,
+                                        exchangeContractAddress: string): Promise<boolean> {
         await assert.isUserAddressAvailableAsync(this._web3Wrapper);
-        const exchangeInstance = await this._getExchangeContractAsync();
+        const exchangeInstance = await this._getExchangeContractAsync(exchangeContractAddress);
         const isRoundingError = await exchangeInstance.isRoundingError.call(
             takerTokenAmount, fillTakerAmount, makerTokenAmount,
         );
         return isRoundingError;
     }
-    private async _getExchangeContractAsync(): Promise<ExchangeContract> {
-        if (!_.isUndefined(this._exchangeContractIfExists)) {
-            return this._exchangeContractIfExists;
+    private async _getExchangeContractAsync(exchangeContractAddress: string): Promise<ExchangeContract> {
+        if (!_.isUndefined(this._exchangeContractByAddress[exchangeContractAddress])) {
+            return this._exchangeContractByAddress[exchangeContractAddress];
         }
+        const ExchangeArtifacts = this._getExchangeArtifactsByAddressOrThrow(exchangeContractAddress);
         const contractInstance = await this._instantiateContractIfExistsAsync((ExchangeArtifacts as any));
-        this._exchangeContractIfExists = contractInstance as ExchangeContract;
-        return this._exchangeContractIfExists;
+        this._exchangeContractByAddress[exchangeContractAddress] = contractInstance as ExchangeContract;
+        return this._exchangeContractByAddress[exchangeContractAddress];
+    }
+    private _getExchangeArtifactsByAddressOrThrow(exchangeContractAddress: string): ContractArtifact {
+        const exchangeArtifacts = _.values<ContractArtifact>(ExchangeArtifactsByName);
+        for (const exchangeArtifact of exchangeArtifacts) {
+            const networkSpecificExchangeArtifactValues = _.values(exchangeArtifact.networks);
+            const exchangeAddressesInArtifact = _.map(
+                networkSpecificExchangeArtifactValues,
+                networkSpecificExchangeArtifact => networkSpecificExchangeArtifact.address,
+            );
+            if (_.includes(exchangeAddressesInArtifact, exchangeContractAddress)) {
+                return exchangeArtifact;
+            }
+        }
+        throw new Error(ZeroExError.EXCHANGE_CONTRACT_DOES_NOT_EXIST);
     }
-    private async _getZRXTokenAddressAsync(): Promise<string> {
-        const exchangeInstance = await this._getExchangeContractAsync();
-        return exchangeInstance.ZRX.call();
+    private async _getZRXTokenAddressAsync(exchangeContractAddress: string): Promise<string> {
+        const exchangeInstance = await this._getExchangeContractAsync(exchangeContractAddress);
+        const ZRXtokenAddress = await exchangeInstance.ZRX.call();
+        return ZRXtokenAddress;
     }
 }
diff --git a/src/contract_wrappers/proxy_wrapper.ts b/src/contract_wrappers/proxy_wrapper.ts
new file mode 100644
index 000000000..862bce131
--- /dev/null
+++ b/src/contract_wrappers/proxy_wrapper.ts
@@ -0,0 +1,33 @@
+import * as _ from 'lodash';
+import {Web3Wrapper} from '../web3_wrapper';
+import {ContractWrapper} from './contract_wrapper';
+import * as ProxyArtifacts from '../artifacts/Proxy.json';
+import {ProxyContract} from '../types';
+
+/**
+ * This class includes the functionality related to interacting with the Proxy contract.
+ */
+export class ProxyWrapper extends ContractWrapper {
+    private _proxyContractIfExists?: ProxyContract;
+    public invalidateContractInstance(): void {
+        delete this._proxyContractIfExists;
+    }
+    /**
+     * Check if the Exchange contract address is authorized by the Proxy contract.
+     * @param   exchangeContractAddress     The hex encoded address of the Exchange contract to use.
+     * @return  Whether the exchangeContractAddress is authorized.
+     */
+    public async isAuthorizedAsync(exchangeContractAddress: string): Promise<boolean> {
+        const proxyContractInstance = await this._getProxyContractAsync();
+        const isAuthorized = await proxyContractInstance.authorized.call(exchangeContractAddress);
+        return isAuthorized;
+    }
+    private async _getProxyContractAsync(): Promise<ProxyContract> {
+        if (!_.isUndefined(this._proxyContractIfExists)) {
+            return this._proxyContractIfExists;
+        }
+        const contractInstance = await this._instantiateContractIfExistsAsync((ProxyArtifacts as any));
+        this._proxyContractIfExists = contractInstance as ProxyContract;
+        return this._proxyContractIfExists;
+    }
+}
diff --git a/src/exchange_artifacts_by_name.ts b/src/exchange_artifacts_by_name.ts
new file mode 100644
index 000000000..d5ae6e180
--- /dev/null
+++ b/src/exchange_artifacts_by_name.ts
@@ -0,0 +1,6 @@
+import {ContractArtifact} from './types';
+import * as Exchange_v1 from './artifacts/exchange/Exchange_v1.json';
+
+export const ExchangeArtifactsByName = {
+    Exchange_v1: Exchange_v1 as any as ContractArtifact,
+};
diff --git a/src/globals.d.ts b/src/globals.d.ts
index 4a0a3fb04..6a4e8d3a7 100644
--- a/src/globals.d.ts
+++ b/src/globals.d.ts
@@ -7,10 +7,6 @@ declare module 'request-promise-native';
 declare module 'web3-provider-engine';
 declare module 'web3-provider-engine/subproviders/rpc';
 
-declare interface Schema {
-    id: string;
-}
-
 // HACK: In order to merge the bignumber declaration added by chai-bignumber to the chai Assertion
 // interface we must use `namespace` as the Chai definitelyTyped definition does. Since we otherwise
 // disallow `namespace`, we disable tslint for the following.
diff --git a/src/types.ts b/src/types.ts
index 708695890..b7ee9c946 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -12,6 +12,7 @@ function strEnum(values: string[]): {[key: string]: string} {
 
 export const ZeroExError = strEnum([
     'CONTRACT_DOES_NOT_EXIST',
+    'EXCHANGE_CONTRACT_DOES_NOT_EXIST',
     'UNHANDLED_ERROR',
     'USER_HAS_NO_ASSOCIATED_ADDRESSES',
     'INVALID_SIGNATURE',
@@ -147,6 +148,12 @@ export interface EtherTokenContract extends ContractInstance {
     withdraw: (amount: BigNumber.BigNumber, txOpts: TxOpts) => Promise<void>;
 }
 
+export interface ProxyContract extends ContractInstance {
+    authorized: {
+        call: (address: string) => Promise<boolean>;
+    };
+}
+
 export const SolidityTypes = strEnum([
     'address',
     'uint256',
@@ -182,6 +189,7 @@ export const ExchangeContractErrs = strEnum([
     'MULTIPLE_MAKERS_IN_SINGLE_CANCEL_BATCH_DISALLOWED',
     'INSUFFICIENT_REMAINING_FILL_AMOUNT',
     'MULTIPLE_TAKER_TOKENS_IN_FILL_UP_TO_DISALLOWED',
+    'BATCH_ORDERS_MUST_HAVE_SAME_EXCHANGE_ADDRESS',
 ]);
 export type ExchangeContractErrs = keyof typeof ExchangeContractErrs;
 
@@ -241,6 +249,7 @@ export interface Order {
     makerTokenAddress: string;
     takerTokenAddress: string;
     salt: BigNumber.BigNumber;
+    exchangeContractAddress: string;
     feeRecipient: string;
     expirationUnixTimestampSec: BigNumber.BigNumber;
 }
@@ -326,3 +335,15 @@ export interface ContractEventEmitter {
  * It is however a `Web3` library type, not a native `0x.js` type.
  */
 export type Web3Provider = Web3.Provider;
+
+export interface ExchangeContractByAddress {
+    [address: string]: ExchangeContract;
+}
+
+export interface ContractArtifact {
+    networks: {
+        [networkId: number]: {
+            address: string;
+        };
+    };
+}
diff --git a/src/utils/assert.ts b/src/utils/assert.ts
index 94b119d5a..38c1d4aae 100644
--- a/src/utils/assert.ts
+++ b/src/utils/assert.ts
@@ -2,6 +2,7 @@ import * as _ from 'lodash';
 import * as BigNumber from 'bignumber.js';
 import * as Web3 from 'web3';
 import {Web3Wrapper} from '../web3_wrapper';
+import {Schema} from 'jsonschema';
 import {SchemaValidator} from './schema_validator';
 import {utils} from './utils';
 
diff --git a/src/utils/schema_validator.ts b/src/utils/schema_validator.ts
index 9097dce88..e3f911adb 100644
--- a/src/utils/schema_validator.ts
+++ b/src/utils/schema_validator.ts
@@ -1,4 +1,4 @@
-import {Validator, ValidatorResult} from 'jsonschema';
+import {Validator, ValidatorResult,  Schema} from 'jsonschema';
 import {ecSignatureSchema, ecSignatureParameterSchema} from '../schemas/ec_signature_schema';
 import {orderSchema, signedOrderSchema} from '../schemas/order_schemas';
 import {addressSchema, numberSchema} from '../schemas/basic_type_schemas';
diff --git a/src/utils/utils.ts b/src/utils/utils.ts
index bad5b6498..061e9f99a 100644
--- a/src/utils/utils.ts
+++ b/src/utils/utils.ts
@@ -22,6 +22,9 @@ export const utils = {
     isParityNode(nodeVersion: string): boolean {
         return _.includes(nodeVersion, 'Parity');
     },
+    isTestRpc(nodeVersion: string): boolean {
+        return _.includes(nodeVersion, 'TestRPC');
+    },
     isValidOrderHash(orderHashHex: string): boolean {
         const isValid = /^0x[0-9A-F]{64}$/i.test(orderHashHex);
         return isValid;
@@ -29,9 +32,9 @@ export const utils = {
     spawnSwitchErr(name: string, value: any): Error {
         return new Error(`Unexpected switch value: ${value} encountered for ${name}`);
     },
-    getOrderHashHex(order: Order|SignedOrder, exchangeContractAddr: string): string {
+    getOrderHashHex(order: Order|SignedOrder): string {
         const orderParts = [
-            {value: exchangeContractAddr, type: SolidityTypes.address},
+            {value: order.exchangeContractAddress, type: SolidityTypes.address},
             {value: order.maker, type: SolidityTypes.address},
             {value: order.taker, type: SolidityTypes.address},
             {value: order.makerTokenAddress, type: SolidityTypes.address},
diff --git a/test/0x.js_test.ts b/test/0x.js_test.ts
index 9ec0a0c8e..50db402c4 100644
--- a/test/0x.js_test.ts
+++ b/test/0x.js_test.ts
@@ -16,10 +16,11 @@ describe('ZeroEx library', () => {
         it('overrides provider in nested web3s and invalidates contractInstances', async () => {
             const web3 = web3Factory.create();
             const zeroEx = new ZeroEx(web3.currentProvider);
+            const [exchangeContractAddress] = await zeroEx.exchange.getAvailableContractAddressesAsync();
             // Instantiate the contract instances with the current provider
-            await (zeroEx.exchange as any)._getExchangeContractAsync();
+            await (zeroEx.exchange as any)._getExchangeContractAsync(exchangeContractAddress);
             await (zeroEx.tokenRegistry as any)._getTokenRegistryContractAsync();
-            expect((zeroEx.exchange as any)._exchangeContractIfExists).to.not.be.undefined();
+            expect((zeroEx.exchange as any)._exchangeContractByAddress[exchangeContractAddress]).to.not.be.undefined();
             expect((zeroEx.tokenRegistry as any)._tokenRegistryContractIfExists).to.not.be.undefined();
 
             const newProvider = web3Factory.getRpcProvider();
@@ -28,7 +29,7 @@ describe('ZeroEx library', () => {
             await zeroEx.setProviderAsync(newProvider);
 
             // Check that contractInstances with old provider are removed after provider update
-            expect((zeroEx.exchange as any)._exchangeContractIfExists).to.be.undefined();
+            expect((zeroEx.exchange as any)._exchangeContractByAddress[exchangeContractAddress]).to.be.undefined();
             expect((zeroEx.tokenRegistry as any)._tokenRegistryContractIfExists).to.be.undefined();
 
             // Check that all nested web3 instances return the updated provider
@@ -52,6 +53,10 @@ describe('ZeroEx library', () => {
         const address = '0x5409ed021d9299bf6814279a6a1411a7e866a631';
         const web3 = web3Factory.create();
         const zeroEx = new ZeroEx(web3.currentProvider);
+        let exchangeContractAddress: string;
+        before(async () => {
+            [exchangeContractAddress] = await zeroEx.exchange.getAvailableContractAddressesAsync();
+        });
         it('should return false if the data doesn\'t pertain to the signature & address', async () => {
             expect(ZeroEx.isValidSignature('0x0', signature, address)).to.be.false();
             return expect(
@@ -77,7 +82,7 @@ describe('ZeroEx library', () => {
             const isValidSignatureLocal = ZeroEx.isValidSignature(dataHex, signature, address);
             expect(isValidSignatureLocal).to.be.true();
             const isValidSignatureOnContract = await (zeroEx.exchange as any)
-                ._isValidSignatureUsingContractCallAsync(dataHex, signature, address);
+                ._isValidSignatureUsingContractCallAsync(dataHex, signature, address, exchangeContractAddress);
             return expect(isValidSignatureOnContract).to.be.true();
         });
     });
@@ -125,15 +130,16 @@ describe('ZeroEx library', () => {
             expect(baseUnitAmount).to.be.bignumber.equal(expectedUnitAmount);
         });
     });
-    describe('#getOrderHashHexAsync', () => {
-        const exchangeContractAddress = constants.NULL_ADDRESS;
-        const expectedOrderHash = '0x103a5e97dab5dbeb8f385636f86a7d1e458a7ccbe1bd194727f0b2f85ab116c7';
+    describe('#getOrderHashHex', () => {
+        const expectedOrderHash = '0x39da987067a3c9e5f1617694f1301326ba8c8b0498ebef5df4863bed394e3c83';
+        const fakeExchangeContractAddress = '0xb69e673309512a9d726f87304c6984054f87a93b';
         const order: Order = {
             maker: constants.NULL_ADDRESS,
             taker: constants.NULL_ADDRESS,
             feeRecipient: constants.NULL_ADDRESS,
             makerTokenAddress: constants.NULL_ADDRESS,
             takerTokenAddress: constants.NULL_ADDRESS,
+            exchangeContractAddress: fakeExchangeContractAddress,
             salt: new BigNumber(0),
             makerFee: new BigNumber(0),
             takerFee: new BigNumber(0),
@@ -141,22 +147,11 @@ describe('ZeroEx library', () => {
             takerTokenAmount: new BigNumber(0),
             expirationUnixTimestampSec: new BigNumber(0),
         };
-        let stubs: Sinon.SinonStub[] = [];
-        afterEach(() => {
-            // clean up any stubs after the test has completed
-            _.each(stubs, s => s.restore());
-            stubs = [];
-        });
         it('calculates the order hash', async () => {
             const web3 = web3Factory.create();
             const zeroEx = new ZeroEx(web3.currentProvider);
 
-            stubs = [
-                Sinon.stub((zeroEx as any), '_getExchangeAddressAsync')
-                    .returns(Promise.resolve(exchangeContractAddress)),
-            ];
-
-            const orderHash = await zeroEx.getOrderHashHexAsync(order);
+            const orderHash = zeroEx.getOrderHashHex(order);
             expect(orderHash).to.be.equal(expectedOrderHash);
         });
     });
diff --git a/test/artifacts_test.ts b/test/artifacts_test.ts
index d71b45567..22d55a2ee 100644
--- a/test/artifacts_test.ts
+++ b/test/artifacts_test.ts
@@ -1,9 +1,14 @@
 import * as fs from 'fs';
+import * as chai from 'chai';
+import {chaiSetup} from './utils/chai_setup';
 import HDWalletProvider = require('truffle-hdwallet-provider');
 import {ZeroEx} from '../src';
 import {web3Factory} from './utils/web3_factory';
 import {constants} from './utils/constants';
 
+chaiSetup.configure();
+const expect = chai.expect;
+
 // Those tests are slower cause they're talking to a remote node
 const TIMEOUT = 10000;
 
@@ -22,7 +27,8 @@ describe('Artifacts', () => {
             await (zeroEx.token as any)._getProxyAddressAsync();
         }).timeout(TIMEOUT);
         it('exchange contract is deployed', async () => {
-            await (zeroEx.exchange as any)._getExchangeContractAsync();
+            const exchangeContractAddresses = await zeroEx.exchange.getAvailableContractAddressesAsync();
+            expect(exchangeContractAddresses).to.have.lengthOf.above(0);
         }).timeout(TIMEOUT);
     });
 });
diff --git a/test/exchange_wrapper_test.ts b/test/exchange_wrapper_test.ts
index 7835de993..873ff48db 100644
--- a/test/exchange_wrapper_test.ts
+++ b/test/exchange_wrapper_test.ts
@@ -1,4 +1,5 @@
 import 'mocha';
+import * as _ from 'lodash';
 import * as chai from 'chai';
 import * as Web3 from 'web3';
 import * as BigNumber from 'bignumber.js';
@@ -23,6 +24,7 @@ import {DoneCallback} from '../src/types';
 import {FillScenarios} from './utils/fill_scenarios';
 import {TokenUtils} from './utils/token_utils';
 import {assert} from '../src/utils/assert';
+import {ProxyWrapper} from '../src/contract_wrappers/proxy_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -38,14 +40,16 @@ describe('ExchangeWrapper', () => {
     let userAddresses: string[];
     let zrxTokenAddress: string;
     let fillScenarios: FillScenarios;
+    let exchangeContractAddress: string;
     before(async () => {
         web3 = web3Factory.create();
         zeroEx = new ZeroEx(web3.currentProvider);
+        [exchangeContractAddress] = await zeroEx.exchange.getAvailableContractAddressesAsync();
         userAddresses = await promisify(web3.eth.getAccounts)();
         tokens = await zeroEx.tokenRegistry.getTokensAsync();
         tokenUtils = new TokenUtils(tokens);
         zrxTokenAddress = tokenUtils.getProtocolTokenOrThrow().address;
-        fillScenarios = new FillScenarios(zeroEx, userAddresses, tokens, zrxTokenAddress);
+        fillScenarios = new FillScenarios(zeroEx, userAddresses, tokens, zrxTokenAddress, exchangeContractAddress);
     });
     beforeEach(async () => {
         await blockchainLifecycle.startAsync();
@@ -392,11 +396,11 @@ describe('ExchangeWrapper', () => {
                 signedOrder = await fillScenarios.createFillableSignedOrderAsync(
                     makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
                 );
-                signedOrderHashHex = await zeroEx.getOrderHashHexAsync(signedOrder);
+                signedOrderHashHex = zeroEx.getOrderHashHex(signedOrder);
                 anotherSignedOrder = await fillScenarios.createFillableSignedOrderAsync(
                     makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
                 );
-                anotherOrderHashHex = await zeroEx.getOrderHashHexAsync(anotherSignedOrder);
+                anotherOrderHashHex = zeroEx.getOrderHashHex(anotherSignedOrder);
                 orderFillBatch = [
                     {
                         signedOrder,
@@ -414,8 +418,12 @@ describe('ExchangeWrapper', () => {
                 });
                 it('should successfully fill multiple orders', async () => {
                     await zeroEx.exchange.batchFillOrderAsync(orderFillBatch, shouldCheckTransfer, takerAddress);
-                    const filledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(signedOrderHashHex);
-                    const anotherFilledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(anotherOrderHashHex);
+                    const filledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(
+                        signedOrderHashHex, exchangeContractAddress,
+                    );
+                    const anotherFilledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(
+                        anotherOrderHashHex, exchangeContractAddress,
+                    );
                     expect(filledAmount).to.be.bignumber.equal(fillTakerAmount);
                     expect(anotherFilledAmount).to.be.bignumber.equal(fillTakerAmount);
                 });
@@ -432,11 +440,11 @@ describe('ExchangeWrapper', () => {
                 signedOrder = await fillScenarios.createFillableSignedOrderAsync(
                     makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
                 );
-                signedOrderHashHex = await zeroEx.getOrderHashHexAsync(signedOrder);
+                signedOrderHashHex = zeroEx.getOrderHashHex(signedOrder);
                 anotherSignedOrder = await fillScenarios.createFillableSignedOrderAsync(
                     makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
                 );
-                anotherOrderHashHex = await zeroEx.getOrderHashHexAsync(anotherSignedOrder);
+                anotherOrderHashHex = zeroEx.getOrderHashHex(anotherSignedOrder);
                 signedOrders = [signedOrder, anotherSignedOrder];
             });
             describe('successful batch fills', () => {
@@ -447,8 +455,12 @@ describe('ExchangeWrapper', () => {
                     await zeroEx.exchange.fillOrdersUpToAsync(
                         signedOrders, fillUpToAmount, shouldCheckTransfer, takerAddress,
                     );
-                    const filledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(signedOrderHashHex);
-                    const anotherFilledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(anotherOrderHashHex);
+                    const filledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(
+                        signedOrderHashHex, exchangeContractAddress,
+                    );
+                    const anotherFilledAmount = await zeroEx.exchange.getFilledTakerAmountAsync(
+                        anotherOrderHashHex, exchangeContractAddress,
+                    );
                     expect(filledAmount).to.be.bignumber.equal(fillableAmount);
                     const remainingFillAmount = fillableAmount.minus(1);
                     expect(anotherFilledAmount).to.be.bignumber.equal(remainingFillAmount);
@@ -480,7 +492,7 @@ describe('ExchangeWrapper', () => {
             signedOrder = await fillScenarios.createFillableSignedOrderAsync(
                 makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
             );
-            orderHashHex = await zeroEx.getOrderHashHexAsync(signedOrder);
+            orderHashHex = zeroEx.getOrderHashHex(signedOrder);
         });
         describe('#cancelOrderAsync', () => {
             describe('failed cancels', () => {
@@ -495,7 +507,7 @@ describe('ExchangeWrapper', () => {
                         makerTokenAddress, takerTokenAddress, makerAddress, takerAddress,
                         fillableAmount, expirationInPast,
                     );
-                    orderHashHex = await zeroEx.getOrderHashHexAsync(expiredSignedOrder);
+                    orderHashHex = zeroEx.getOrderHashHex(expiredSignedOrder);
                     return expect(zeroEx.exchange.cancelOrderAsync(expiredSignedOrder, cancelAmount))
                         .to.be.rejectedWith(ExchangeContractErrs.ORDER_CANCEL_EXPIRED);
                 });
@@ -508,7 +520,9 @@ describe('ExchangeWrapper', () => {
             describe('successful cancels', () => {
                 it('should cancel an order', async () => {
                     await zeroEx.exchange.cancelOrderAsync(signedOrder, cancelAmount);
-                    const cancelledAmount = await zeroEx.exchange.getCanceledTakerAmountAsync(orderHashHex);
+                    const cancelledAmount = await zeroEx.exchange.getCanceledTakerAmountAsync(
+                        orderHashHex, exchangeContractAddress,
+                    );
                     expect(cancelledAmount).to.be.bignumber.equal(cancelAmount);
                 });
                 it('should return cancelled amount', async () => {
@@ -525,7 +539,7 @@ describe('ExchangeWrapper', () => {
                 anotherSignedOrder = await fillScenarios.createFillableSignedOrderAsync(
                     makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
                 );
-                anotherOrderHashHex = await zeroEx.getOrderHashHexAsync(anotherSignedOrder);
+                anotherOrderHashHex = zeroEx.getOrderHashHex(anotherSignedOrder);
                 cancelBatch = [
                     {
                         order: signedOrder,
@@ -554,9 +568,12 @@ describe('ExchangeWrapper', () => {
             describe('successful batch cancels', () => {
                 it('should cancel a batch of orders', async () => {
                     await zeroEx.exchange.batchCancelOrderAsync(cancelBatch);
-                    const cancelledAmount = await zeroEx.exchange.getCanceledTakerAmountAsync(orderHashHex);
+                    const cancelledAmount = await zeroEx.exchange.getCanceledTakerAmountAsync(
+                        orderHashHex, exchangeContractAddress,
+                    );
                     const anotherCancelledAmount = await zeroEx.exchange.getCanceledTakerAmountAsync(
-                        anotherOrderHashHex);
+                        anotherOrderHashHex, exchangeContractAddress,
+                    );
                     expect(cancelledAmount).to.be.bignumber.equal(cancelAmount);
                     expect(anotherCancelledAmount).to.be.bignumber.equal(cancelAmount);
                 });
@@ -583,53 +600,73 @@ describe('ExchangeWrapper', () => {
             signedOrder = await fillScenarios.createPartiallyFilledSignedOrderAsync(
                 makerTokenAddress, takerTokenAddress, takerAddress, fillableAmount, partialFillAmount,
             );
-            orderHash = await zeroEx.getOrderHashHexAsync(signedOrder);
+            orderHash = zeroEx.getOrderHashHex(signedOrder);
         });
         describe('#getUnavailableTakerAmountAsync', () => {
             it ('should throw if passed an invalid orderHash', async () => {
                 const invalidOrderHashHex = '0x123';
-                return expect(zeroEx.exchange.getUnavailableTakerAmountAsync(invalidOrderHashHex)).to.be.rejected();
+                return expect(zeroEx.exchange.getUnavailableTakerAmountAsync(
+                    invalidOrderHashHex, exchangeContractAddress,
+                )).to.be.rejected();
             });
             it ('should return zero if passed a valid but non-existent orderHash', async () => {
-                const unavailableValueT = await zeroEx.exchange.getUnavailableTakerAmountAsync(NON_EXISTENT_ORDER_HASH);
+                const unavailableValueT = await zeroEx.exchange.getUnavailableTakerAmountAsync(
+                    NON_EXISTENT_ORDER_HASH, exchangeContractAddress,
+                );
                 expect(unavailableValueT).to.be.bignumber.equal(0);
             });
             it ('should return the unavailableValueT for a valid and partially filled orderHash', async () => {
-                const unavailableValueT = await zeroEx.exchange.getUnavailableTakerAmountAsync(orderHash);
+                const unavailableValueT = await zeroEx.exchange.getUnavailableTakerAmountAsync(
+                    orderHash, exchangeContractAddress,
+                );
                 expect(unavailableValueT).to.be.bignumber.equal(partialFillAmount);
             });
         });
         describe('#getFilledTakerAmountAsync', () => {
             it ('should throw if passed an invalid orderHash', async () => {
                 const invalidOrderHashHex = '0x123';
-                return expect(zeroEx.exchange.getFilledTakerAmountAsync(invalidOrderHashHex)).to.be.rejected();
+                return expect(zeroEx.exchange.getFilledTakerAmountAsync(
+                    invalidOrderHashHex, exchangeContractAddress,
+                )).to.be.rejected();
             });
             it ('should return zero if passed a valid but non-existent orderHash', async () => {
-                const filledValueT = await zeroEx.exchange.getFilledTakerAmountAsync(NON_EXISTENT_ORDER_HASH);
+                const filledValueT = await zeroEx.exchange.getFilledTakerAmountAsync(
+                    NON_EXISTENT_ORDER_HASH, exchangeContractAddress,
+                );
                 expect(filledValueT).to.be.bignumber.equal(0);
             });
             it ('should return the filledValueT for a valid and partially filled orderHash', async () => {
-                const filledValueT = await zeroEx.exchange.getFilledTakerAmountAsync(orderHash);
+                const filledValueT = await zeroEx.exchange.getFilledTakerAmountAsync(
+                    orderHash, exchangeContractAddress,
+                );
                 expect(filledValueT).to.be.bignumber.equal(partialFillAmount);
             });
         });
         describe('#getCanceledTakerAmountAsync', () => {
             it ('should throw if passed an invalid orderHash', async () => {
                 const invalidOrderHashHex = '0x123';
-                return expect(zeroEx.exchange.getCanceledTakerAmountAsync(invalidOrderHashHex)).to.be.rejected();
+                return expect(zeroEx.exchange.getCanceledTakerAmountAsync(
+                    invalidOrderHashHex, exchangeContractAddress,
+                )).to.be.rejected();
             });
             it ('should return zero if passed a valid but non-existent orderHash', async () => {
-                const cancelledValueT = await zeroEx.exchange.getCanceledTakerAmountAsync(NON_EXISTENT_ORDER_HASH);
+                const cancelledValueT = await zeroEx.exchange.getCanceledTakerAmountAsync(
+                    NON_EXISTENT_ORDER_HASH, exchangeContractAddress,
+                );
                 expect(cancelledValueT).to.be.bignumber.equal(0);
             });
             it ('should return the cancelledValueT for a valid and partially filled orderHash', async () => {
-                const cancelledValueT = await zeroEx.exchange.getCanceledTakerAmountAsync(orderHash);
+                const cancelledValueT = await zeroEx.exchange.getCanceledTakerAmountAsync(
+                    orderHash, exchangeContractAddress,
+                );
                 expect(cancelledValueT).to.be.bignumber.equal(0);
             });
             it ('should return the cancelledValueT for a valid and cancelled orderHash', async () => {
                 const cancelAmount = fillableAmount.minus(partialFillAmount);
                 await zeroEx.exchange.cancelOrderAsync(signedOrder, cancelAmount);
-                const cancelledValueT = await zeroEx.exchange.getCanceledTakerAmountAsync(orderHash);
+                const cancelledValueT = await zeroEx.exchange.getCanceledTakerAmountAsync(
+                    orderHash, exchangeContractAddress,
+                );
                 expect(cancelledValueT).to.be.bignumber.equal(cancelAmount);
             });
         });
@@ -672,11 +709,13 @@ describe('ExchangeWrapper', () => {
         // Source: https://github.com/mochajs/mocha/issues/2407
         it('Should receive the LogFill event when an order is filled', (done: DoneCallback) => {
             (async () => {
-                const zeroExEvent = await zeroEx.exchange.subscribeAsync(ExchangeEvents.LogFill, subscriptionOpts,
-                                                                         indexFilterValues);
+                const zeroExEvent = await zeroEx.exchange.subscribeAsync(
+                    ExchangeEvents.LogFill, subscriptionOpts, indexFilterValues, exchangeContractAddress,
+                );
                 zeroExEvent.watch((err: Error, event: ContractEvent) => {
                     expect(err).to.be.null();
                     expect(event).to.not.be.undefined();
+                    expect(event.event).to.be.equal('LogFill');
                     done();
                 });
                 await zeroEx.exchange.fillOrderAsync(
@@ -686,11 +725,13 @@ describe('ExchangeWrapper', () => {
         });
         it('Should receive the LogCancel event when an order is cancelled', (done: DoneCallback) => {
             (async () => {
-                const zeroExEvent = await zeroEx.exchange.subscribeAsync(ExchangeEvents.LogCancel, subscriptionOpts,
-                                                                         indexFilterValues);
+                const zeroExEvent = await zeroEx.exchange.subscribeAsync(
+                    ExchangeEvents.LogCancel, subscriptionOpts, indexFilterValues, exchangeContractAddress,
+                );
                 zeroExEvent.watch((err: Error, event: ContractEvent) => {
                         expect(err).to.be.null();
                         expect(event).to.not.be.undefined();
+                        expect(event.event).to.be.equal('LogCancel');
                         done();
                 });
                 await zeroEx.exchange.cancelOrderAsync(signedOrder, cancelTakerAmountInBaseUnits);
@@ -699,7 +740,7 @@ describe('ExchangeWrapper', () => {
         it('Outstanding subscriptions are cancelled when zeroEx.setProviderAsync called', (done: DoneCallback) => {
             (async () => {
                 const eventSubscriptionToBeCancelled = await zeroEx.exchange.subscribeAsync(
-                    ExchangeEvents.LogFill, subscriptionOpts, indexFilterValues,
+                    ExchangeEvents.LogFill, subscriptionOpts, indexFilterValues, exchangeContractAddress,
                 );
                 eventSubscriptionToBeCancelled.watch((err: Error, event: ContractEvent) => {
                     done(new Error('Expected this subscription to have been cancelled'));
@@ -709,11 +750,12 @@ describe('ExchangeWrapper', () => {
                 await zeroEx.setProviderAsync(newProvider);
 
                 const eventSubscriptionToStay = await zeroEx.exchange.subscribeAsync(
-                    ExchangeEvents.LogFill, subscriptionOpts, indexFilterValues,
+                    ExchangeEvents.LogFill, subscriptionOpts, indexFilterValues, exchangeContractAddress,
                 );
                 eventSubscriptionToStay.watch((err: Error, event: ContractEvent) => {
                     expect(err).to.be.null();
                     expect(event).to.not.be.undefined();
+                    expect(event.event).to.be.equal('LogFill');
                     done();
                 });
                 await zeroEx.exchange.fillOrderAsync(
@@ -724,7 +766,7 @@ describe('ExchangeWrapper', () => {
         it('Should stop watch for events when stopWatchingAsync called on the eventEmitter', (done: DoneCallback) => {
             (async () => {
                 const eventSubscriptionToBeStopped = await zeroEx.exchange.subscribeAsync(
-                    ExchangeEvents.LogFill, subscriptionOpts, indexFilterValues,
+                    ExchangeEvents.LogFill, subscriptionOpts, indexFilterValues, exchangeContractAddress,
                 );
                 eventSubscriptionToBeStopped.watch((err: Error, event: ContractEvent) => {
                     done(new Error('Expected this subscription to have been stopped'));
@@ -770,16 +812,29 @@ describe('ExchangeWrapper', () => {
             const signedOrder = await fillScenarios.createFillableSignedOrderAsync(
                 makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount,
             );
-            const orderHash = await zeroEx.getOrderHashHexAsync(signedOrder);
+            const orderHash = zeroEx.getOrderHashHex(signedOrder);
             const orderHashFromContract = await (zeroEx.exchange as any)
                 ._getOrderHashHexUsingContractCallAsync(signedOrder);
             expect(orderHash).to.equal(orderHashFromContract);
         });
     });
-    describe('#getContractAddressAsync', () => {
-        it('returns the exchange contract address', async () => {
-            const exchangeAddress = await zeroEx.exchange.getContractAddressAsync();
-            assert.isETHAddressHex('exchangeAddress', exchangeAddress);
+    describe('#getAvailableContractAddressesAsync', () => {
+        it('returns the exchange contract addresses', async () => {
+            const exchangeAddresses = await zeroEx.exchange.getAvailableContractAddressesAsync();
+            _.map(exchangeAddresses, exchangeAddress => {
+                assert.isETHAddressHex('exchangeAddress', exchangeAddress);
+            });
+        });
+    });
+    describe('#getProxyAuthorizedContractAddressesAsync', () => {
+        it('returns the Proxy authorized exchange contract addresses', async () => {
+            const exchangeAddresses = await zeroEx.exchange.getProxyAuthorizedContractAddressesAsync();
+            for (const exchangeAddress of exchangeAddresses) {
+                assert.isETHAddressHex('exchangeAddress', exchangeAddress);
+                const proxyWrapper = (zeroEx as any)._proxyWrapper as ProxyWrapper;
+                const isAuthorized = await proxyWrapper.isAuthorizedAsync(exchangeAddress);
+                expect(isAuthorized).to.be.true();
+            }
         });
     });
 });
diff --git a/test/proxy_wrapper_test.ts b/test/proxy_wrapper_test.ts
new file mode 100644
index 000000000..29b5776c6
--- /dev/null
+++ b/test/proxy_wrapper_test.ts
@@ -0,0 +1,23 @@
+import * as chai from 'chai';
+import {chaiSetup} from './utils/chai_setup';
+import {web3Factory} from './utils/web3_factory';
+import {ZeroEx} from '../src';
+import {ProxyWrapper} from '../src/contract_wrappers/proxy_wrapper';
+
+chaiSetup.configure();
+const expect = chai.expect;
+
+describe('ProxyWrapper', () => {
+    let zeroEx: ZeroEx;
+    before(async () => {
+        const web3 = web3Factory.create();
+        zeroEx = new ZeroEx(web3.currentProvider);
+    });
+    describe('#isAuthorizedAsync', () => {
+        it('should return false if the address is not authorized', async () => {
+            const proxyWrapper = (zeroEx as any)._proxyWrapper as ProxyWrapper;
+            const isAuthorized = await proxyWrapper.isAuthorizedAsync(ZeroEx.NULL_ADDRESS);
+            expect(isAuthorized).to.be.false();
+        });
+    });
+});
diff --git a/test/utils/fill_scenarios.ts b/test/utils/fill_scenarios.ts
index b8ad7eb12..65a912955 100644
--- a/test/utils/fill_scenarios.ts
+++ b/test/utils/fill_scenarios.ts
@@ -9,12 +9,15 @@ export class FillScenarios {
     private tokens: Token[];
     private coinbase: string;
     private zrxTokenAddress: string;
-    constructor(zeroEx: ZeroEx, userAddresses: string[], tokens: Token[], zrxTokenAddress: string) {
+    private exchangeContractAddress: string;
+    constructor(zeroEx: ZeroEx, userAddresses: string[],
+                tokens: Token[], zrxTokenAddress: string, exchangeContractAddress: string) {
         this.zeroEx = zeroEx;
         this.userAddresses = userAddresses;
         this.tokens = tokens;
         this.coinbase = userAddresses[0];
         this.zrxTokenAddress = zrxTokenAddress;
+        this.exchangeContractAddress = exchangeContractAddress;
     }
     public async createFillableSignedOrderAsync(makerTokenAddress: string, takerTokenAddress: string,
                                                 makerAddress: string, takerAddress: string,
@@ -103,7 +106,7 @@ export class FillScenarios {
         const signedOrder = await orderFactory.createSignedOrderAsync(this.zeroEx,
             makerAddress, takerAddress, makerFee, takerFee,
             makerFillableAmount, makerTokenAddress, takerFillableAmount, takerTokenAddress,
-            feeRecepient, expirationUnixTimestampSec);
+            this.exchangeContractAddress, feeRecepient, expirationUnixTimestampSec);
         return signedOrder;
     }
 }
diff --git a/test/utils/order_factory.ts b/test/utils/order_factory.ts
index ef19f2c4c..22bf44c0f 100644
--- a/test/utils/order_factory.ts
+++ b/test/utils/order_factory.ts
@@ -13,6 +13,7 @@ export const orderFactory = {
         makerTokenAddress: string,
         takerTokenAmount: BigNumber.BigNumber,
         takerTokenAddress: string,
+        exchangeContractAddress: string,
         feeRecipient: string,
         expirationUnixTimestampSec?: BigNumber.BigNumber): Promise<SignedOrder> {
         const defaultExpirationUnixTimestampSec = new BigNumber(2524604400); // Close to infinite
@@ -29,10 +30,11 @@ export const orderFactory = {
             makerTokenAddress,
             takerTokenAddress,
             salt: ZeroEx.generatePseudoRandomSalt(),
+            exchangeContractAddress,
             feeRecipient,
             expirationUnixTimestampSec,
         };
-        const orderHash = await zeroEx.getOrderHashHexAsync(order);
+        const orderHash = zeroEx.getOrderHashHex(order);
         const ecSignature = await zeroEx.signOrderHashAsync(orderHash, maker);
         const signedOrder: SignedOrder = _.assign(order, {ecSignature});
         return signedOrder;
diff --git a/yarn.lock b/yarn.lock
index 94d3ad2db..58472f85c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -42,11 +42,7 @@
   version "2.2.41"
   resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-2.2.41.tgz#e27cf0817153eb9f2713b2d3f6c68f1e1c3ca608"
 
-"@types/node@*":
-  version "7.0.23"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-7.0.23.tgz#ededfd92e61046c32fcad56ea7e1101733fad4a4"
-
-"@types/node@^8.0.1":
+"@types/node@*", "@types/node@^8.0.1":
   version "8.0.1"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.0.1.tgz#89c271e0c3b9ebb6a3756dd601336970b6228b77"
 
@@ -92,6 +88,10 @@ ajv-keywords@^1.1.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-1.5.1.tgz#314dd0a4b3368fad3dfcdc54ede6171b886daf3c"
 
+ajv-keywords@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-2.1.0.tgz#a296e17f7bfae7c1ce4f7e0de53d29cb32162df0"
+
 ajv@^4.7.0, ajv@^4.9.1:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-4.11.8.tgz#82ffb02b29e662ae53bdc20af15947706739c536"
@@ -99,6 +99,15 @@ ajv@^4.7.0, ajv@^4.9.1:
     co "^4.6.0"
     json-stable-stringify "^1.0.1"
 
+ajv@^5.1.5:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.2.0.tgz#c1735024c5da2ef75cc190713073d44f098bf486"
+  dependencies:
+    co "^4.6.0"
+    fast-deep-equal "^0.1.0"
+    json-schema-traverse "^0.3.0"
+    json-stable-stringify "^1.0.1"
+
 align-text@^0.1.1, align-text@^0.1.3:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/align-text/-/align-text-0.1.4.tgz#0cd90a561093f35d0a99256c22b7069433fad117"
@@ -239,7 +248,7 @@ async@^0.9.0:
   version "0.9.2"
   resolved "https://registry.yarnpkg.com/async/-/async-0.9.2.tgz#aea74d5e61c1f899613bf64bda66d4c78f2fd17d"
 
-async@^1.4.0, async@^1.4.2, async@^1.5.2, async@~1.5.0:
+async@^1.4.0, async@^1.4.2, async@^1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
 
@@ -708,10 +717,6 @@ bignumber.js@^4.0.2:
   version "2.0.7"
   resolved "git+https://github.com/debris/bignumber.js#94d7146671b9719e00a09c29b01a691bc85048c2"
 
-bignumber.js@~2.1.4:
-  version "2.1.4"
-  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-2.1.4.tgz#29b3bb693dbb238e88b72eac2fb89650888b2d59"
-
 binary-extensions@^1.0.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.8.0.tgz#48ec8d16df4377eae5fa5884682480af4d95c774"
@@ -720,7 +725,7 @@ bindings@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.2.1.tgz#14ad6113812d2d37d72e67b4cacb4bb726505f11"
 
-bip39@^2.2.0, bip39@~2.2.0:
+bip39@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/bip39/-/bip39-2.2.0.tgz#40e73f70674c267f148cdbf8374f2a50be166b0d"
   dependencies:
@@ -899,7 +904,7 @@ camelcase-keys@^2.0.0:
     camelcase "^2.0.0"
     map-obj "^1.0.0"
 
-camelcase@^1.0.2, camelcase@^1.2.1:
+camelcase@^1.0.2:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-1.2.1.tgz#9bb5304d2e0b56698b2c758b08a3eaa9daa58a39"
 
@@ -1018,7 +1023,7 @@ cliui@^2.1.0:
     right-align "^0.1.1"
     wordwrap "0.0.2"
 
-cliui@^3.0.3, cliui@^3.2.0:
+cliui@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/cliui/-/cliui-3.2.0.tgz#120601537a916d29940f934da3b48d585a39213d"
   dependencies:
@@ -1197,6 +1202,12 @@ currently-unhandled@^0.4.1:
   dependencies:
     array-find-index "^1.0.1"
 
+d@1:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/d/-/d-1.0.0.tgz#754bb5bfe55451da69a58b94d45f4c5b0462d58f"
+  dependencies:
+    es5-ext "^0.10.9"
+
 dashdash@^1.12.0:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
@@ -1403,6 +1414,32 @@ es-to-primitive@^1.1.1:
     is-date-object "^1.0.1"
     is-symbol "^1.0.1"
 
+es5-ext@^0.10.14, es5-ext@^0.10.9, es5-ext@~0.10.14:
+  version "0.10.23"
+  resolved "https://registry.yarnpkg.com/es5-ext/-/es5-ext-0.10.23.tgz#7578b51be974207a5487821b56538c224e4e7b38"
+  dependencies:
+    es6-iterator "2"
+    es6-symbol "~3.1"
+
+es6-iterator@2, es6-iterator@^2.0.1, es6-iterator@~2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/es6-iterator/-/es6-iterator-2.0.1.tgz#8e319c9f0453bf575d374940a655920e59ca5512"
+  dependencies:
+    d "1"
+    es5-ext "^0.10.14"
+    es6-symbol "^3.1"
+
+es6-map@^0.1.3:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/es6-map/-/es6-map-0.1.5.tgz#9136e0503dcc06a301690f0bb14ff4e364e949f0"
+  dependencies:
+    d "1"
+    es5-ext "~0.10.14"
+    es6-iterator "~2.0.1"
+    es6-set "~0.1.5"
+    es6-symbol "~3.1.1"
+    event-emitter "~0.3.5"
+
 es6-object-assign@^1.0.3:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/es6-object-assign/-/es6-object-assign-1.1.0.tgz#c2c3582656247c39ea107cb1e6652b6f9f24523c"
@@ -1417,14 +1454,60 @@ es6-promisify@^5.0.0:
   dependencies:
     es6-promise "^4.0.3"
 
+es6-set@~0.1.5:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/es6-set/-/es6-set-0.1.5.tgz#d2b3ec5d4d800ced818db538d28974db0a73ccb1"
+  dependencies:
+    d "1"
+    es5-ext "~0.10.14"
+    es6-iterator "~2.0.1"
+    es6-symbol "3.1.1"
+    event-emitter "~0.3.5"
+
+es6-symbol@3.1.1, es6-symbol@^3.1, es6-symbol@^3.1.1, es6-symbol@~3.1, es6-symbol@~3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/es6-symbol/-/es6-symbol-3.1.1.tgz#bf00ef4fdab6ba1b46ecb7b629b4c7ed5715cc77"
+  dependencies:
+    d "1"
+    es5-ext "~0.10.14"
+
+es6-weak-map@^2.0.1:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/es6-weak-map/-/es6-weak-map-2.0.2.tgz#5e3ab32251ffd1538a1f8e5ffa1357772f92d96f"
+  dependencies:
+    d "1"
+    es5-ext "^0.10.14"
+    es6-iterator "^2.0.1"
+    es6-symbol "^3.1.1"
+
 escape-string-regexp@1.0.5, escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
 
+escope@^3.6.0:
+  version "3.6.0"
+  resolved "https://registry.yarnpkg.com/escope/-/escope-3.6.0.tgz#e01975e812781a163a6dadfdd80398dc64c889c3"
+  dependencies:
+    es6-map "^0.1.3"
+    es6-weak-map "^2.0.1"
+    esrecurse "^4.1.0"
+    estraverse "^4.1.1"
+
 esprima@^2.6.0:
   version "2.7.3"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-2.7.3.tgz#96e3b70d5779f6ad49cd032673d1c312767ba581"
 
+esrecurse@^4.1.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/esrecurse/-/esrecurse-4.2.0.tgz#fa9568d98d3823f9a41d91e902dcab9ea6e5b163"
+  dependencies:
+    estraverse "^4.1.0"
+    object-assign "^4.0.1"
+
+estraverse@^4.1.0, estraverse@^4.1.1:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.2.0.tgz#0dee3fed31fcd469618ce7342099fc1afa0bdb13"
+
 esutils@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
@@ -1468,14 +1551,14 @@ ethereumjs-abi@^0.6.4:
     bn.js "^4.10.0"
     ethereumjs-util "^4.3.0"
 
-ethereumjs-account@^2.0.3, ethereumjs-account@~2.0.4:
+ethereumjs-account@^2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/ethereumjs-account/-/ethereumjs-account-2.0.4.tgz#f8c30231bcb707f4514d8a052c1f9da103624d47"
   dependencies:
     ethereumjs-util "^4.0.1"
     rlp "^2.0.0"
 
-ethereumjs-block@^1.2.2, ethereumjs-block@~1.2.2:
+ethereumjs-block@^1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/ethereumjs-block/-/ethereumjs-block-1.2.2.tgz#2ec7534a59021b8ec9b83c30e49690c6ebaedda1"
   dependencies:
@@ -1485,37 +1568,20 @@ ethereumjs-block@^1.2.2, ethereumjs-block@~1.2.2:
     ethereumjs-util "^4.0.1"
     merkle-patricia-tree "^2.1.2"
 
-ethereumjs-testrpc@3.0.5:
-  version "3.0.5"
-  resolved "https://registry.yarnpkg.com/ethereumjs-testrpc/-/ethereumjs-testrpc-3.0.5.tgz#0d5c5174d0f92278c7cc8785b85a5aafedd7513a"
-  dependencies:
-    async "~1.5.0"
-    bignumber.js "~2.1.4"
-    bip39 "~2.2.0"
-    ethereumjs-account "~2.0.4"
-    ethereumjs-block "~1.2.2"
-    ethereumjs-tx "^1.3.0"
-    ethereumjs-util "~4.5.0"
-    ethereumjs-vm "~2.0.1"
-    ethereumjs-wallet "~0.6.0"
-    fake-merkle-patricia-tree "~1.0.1"
-    heap "~0.2.6"
-    merkle-patricia-tree "~2.1.2"
-    seedrandom "~2.4.2"
-    shelljs "~0.6.0"
-    solc "0.4.6"
-    web3 "~0.16.0"
-    web3-provider-engine "~8.1.0"
-    yargs "~3.29.0"
-
-ethereumjs-tx@^1.0.0, ethereumjs-tx@^1.2.0, ethereumjs-tx@^1.3.0:
+ethereumjs-testrpc@4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/ethereumjs-testrpc/-/ethereumjs-testrpc-4.0.1.tgz#af23babff4c36008418bc6de4c80f81606896cad"
+  dependencies:
+    webpack "^3.0.0"
+
+ethereumjs-tx@^1.0.0, ethereumjs-tx@^1.2.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/ethereumjs-tx/-/ethereumjs-tx-1.3.1.tgz#d6909abcfb37da6404fc18124d351eda20047dac"
   dependencies:
     ethereum-common "^0.0.18"
     ethereumjs-util "^5.0.0"
 
-ethereumjs-util@^4.0.0, ethereumjs-util@^4.0.1, ethereumjs-util@^4.3.0, ethereumjs-util@^4.4.0, ethereumjs-util@~4.5.0:
+ethereumjs-util@^4.0.0, ethereumjs-util@^4.0.1, ethereumjs-util@^4.3.0, ethereumjs-util@^4.4.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz#3e9428b317eebda3d7260d854fddda954b1f1bc6"
   dependencies:
@@ -1538,7 +1604,7 @@ ethereumjs-util@^5.0.0, ethereumjs-util@^5.0.1, ethereumjs-util@^5.1.1:
     rlp "^2.0.0"
     secp256k1 "^3.0.1"
 
-ethereumjs-vm@^2.0.2, ethereumjs-vm@~2.0.1:
+ethereumjs-vm@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/ethereumjs-vm/-/ethereumjs-vm-2.0.2.tgz#84e2372a5715a80a62f7f2a312f8c64537e8a842"
   dependencies:
@@ -1552,7 +1618,7 @@ ethereumjs-vm@^2.0.2, ethereumjs-vm@~2.0.1:
     functional-red-black-tree "^1.0.1"
     merkle-patricia-tree "^2.1.2"
 
-ethereumjs-wallet@^0.6.0, ethereumjs-wallet@~0.6.0:
+ethereumjs-wallet@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/ethereumjs-wallet/-/ethereumjs-wallet-0.6.0.tgz#82763b1697ee7a796be7155da9dfb49b2f98cfdb"
   dependencies:
@@ -1579,6 +1645,13 @@ ethjs-util@^0.1.3:
     is-hex-prefixed "1.0.0"
     strip-hex-prefix "1.0.0"
 
+event-emitter@~0.3.5:
+  version "0.3.5"
+  resolved "https://registry.yarnpkg.com/event-emitter/-/event-emitter-0.3.5.tgz#df8c69eef1647923c7157b9ce83840610b02cc39"
+  dependencies:
+    d "1"
+    es5-ext "~0.10.14"
+
 event-stream@~3.3.0:
   version "3.3.4"
   resolved "https://registry.yarnpkg.com/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
@@ -1643,12 +1716,16 @@ extsprintf@1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.0.2.tgz#e1080e0658e300b06294990cc70e1502235fd550"
 
-fake-merkle-patricia-tree@^1.0.1, fake-merkle-patricia-tree@~1.0.1:
+fake-merkle-patricia-tree@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/fake-merkle-patricia-tree/-/fake-merkle-patricia-tree-1.0.1.tgz#4b8c3acfb520afadf9860b1f14cd8ce3402cddd3"
   dependencies:
     checkpoint-store "^1.1.0"
 
+fast-deep-equal@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-0.1.0.tgz#5c6f4599aba6b333ee3342e2ed978672f1001f8d"
+
 fetch-ponyfill@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/fetch-ponyfill/-/fetch-ponyfill-4.0.0.tgz#18cfe38d69cde42aec71cb3ace79e1f2276293da"
@@ -2019,10 +2096,6 @@ hdkey@^0.7.0:
     coinstring "^2.0.0"
     secp256k1 "^3.0.1"
 
-heap@~0.2.6:
-  version "0.2.6"
-  resolved "https://registry.yarnpkg.com/heap/-/heap-0.2.6.tgz#087e1f10b046932fc8594dd9e6d378afc9d1e5ac"
-
 highlight.js@^9.0.0:
   version "9.12.0"
   resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.12.0.tgz#e6d9dbe57cbefe60751f02af336195870c90c01e"
@@ -2401,6 +2474,10 @@ json-rpc-random-id@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/json-rpc-random-id/-/json-rpc-random-id-1.0.1.tgz#ba49d96aded1444dbb8da3d203748acbbcdec8c8"
 
+json-schema-traverse@^0.3.0:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz#349a6d44c53a51de89b40805c5d5e59b417d3340"
+
 json-schema@0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
@@ -2752,7 +2829,7 @@ merge-source-map@^1.0.2:
   dependencies:
     source-map "^0.5.3"
 
-merkle-patricia-tree@^2.1.2, merkle-patricia-tree@~2.1.2:
+merkle-patricia-tree@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/merkle-patricia-tree/-/merkle-patricia-tree-2.1.2.tgz#724483d54b75631a48fedda55e114051706a7291"
   dependencies:
@@ -3748,10 +3825,6 @@ secp256k1@^3.0.1:
     nan "^2.2.1"
     prebuild-install "^2.0.0"
 
-seedrandom@~2.4.2:
-  version "2.4.3"
-  resolved "https://registry.yarnpkg.com/seedrandom/-/seedrandom-2.4.3.tgz#2438504dad33917314bff18ac4d794f16d6aaecc"
-
 semaphore@>=1.0.1, semaphore@^1.0.3:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/semaphore/-/semaphore-1.0.5.tgz#b492576e66af193db95d65e25ec53f5f19798d60"
@@ -3819,10 +3892,6 @@ shelljs@^0.7.0, shelljs@^0.7.3:
     interpret "^1.0.0"
     rechoir "^0.6.2"
 
-shelljs@~0.6.0:
-  version "0.6.1"
-  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.6.1.tgz#ec6211bed1920442088fe0f70b2837232ed2c8a8"
-
 shx@^0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/shx/-/shx-0.2.2.tgz#0a304d020b0edf1306ad81570e80f0346df58a39"
@@ -3874,7 +3943,7 @@ sntp@1.x.x:
   dependencies:
     hoek "2.x.x"
 
-solc@0.4.6, solc@^0.4.2:
+solc@^0.4.2:
   version "0.4.6"
   resolved "https://registry.yarnpkg.com/solc/-/solc-0.4.6.tgz#afa929a1ceafc0252cfbb4217c8e2b1dab139db7"
   dependencies:
@@ -3887,6 +3956,10 @@ source-list-map@^1.1.1:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-1.1.2.tgz#9889019d1024cce55cdc069498337ef6186a11a1"
 
+source-list-map@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.0.tgz#aaa47403f7b245a92fbc97ea08f250d6087ed085"
+
 source-map-support@^0.4.15, source-map-support@^0.4.2:
   version "0.4.15"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.15.tgz#03202df65c06d2bd8c7ec2362a193056fef8d3b1"
@@ -4361,10 +4434,27 @@ uglify-js@^2.6, uglify-js@^2.8.27:
   optionalDependencies:
     uglify-to-browserify "~1.0.0"
 
+uglify-js@^2.8.29:
+  version "2.8.29"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.8.29.tgz#29c5733148057bb4e1f75df35b7a9cb72e6a59dd"
+  dependencies:
+    source-map "~0.5.1"
+    yargs "~3.10.0"
+  optionalDependencies:
+    uglify-to-browserify "~1.0.0"
+
 uglify-to-browserify@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz#6e0924d6bda6b5afe349e39a6d632850a0f882b7"
 
+uglifyjs-webpack-plugin@^0.4.4:
+  version "0.4.6"
+  resolved "https://registry.yarnpkg.com/uglifyjs-webpack-plugin/-/uglifyjs-webpack-plugin-0.4.6.tgz#b951f4abb6bd617e66f63eb891498e391763e309"
+  dependencies:
+    source-map "^0.5.6"
+    uglify-js "^2.8.29"
+    webpack-sources "^1.0.1"
+
 uid-number@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/uid-number/-/uid-number-0.0.6.tgz#0ea10e8035e8eb5b8e4449f06da1c730663baa81"
@@ -4499,13 +4589,13 @@ web3-provider-engine@~8.1.0:
     xhr "^2.2.0"
     xtend "^4.0.1"
 
-web3-typescript-typings@^0.0.9:
-  version "0.0.9"
-  resolved "https://registry.yarnpkg.com/web3-typescript-typings/-/web3-typescript-typings-0.0.9.tgz#f0c9e9bfcf0effaf16f3498b3d3883686451428b"
+web3-typescript-typings@^0.0.10:
+  version "0.0.10"
+  resolved "https://registry.yarnpkg.com/web3-typescript-typings/-/web3-typescript-typings-0.0.10.tgz#8108c80f252fedb5c1670a547da4554112dbd44d"
   dependencies:
     bignumber.js "^4.0.2"
 
-web3@^0.16.0, web3@~0.16.0:
+web3@^0.16.0:
   version "0.16.0"
   resolved "https://registry.yarnpkg.com/web3/-/web3-0.16.0.tgz#a4554175cd462943035b1f1d39432f741c6b6019"
   dependencies:
@@ -4541,6 +4631,13 @@ webpack-sources@^0.2.3:
     source-list-map "^1.1.1"
     source-map "~0.5.3"
 
+webpack-sources@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-1.0.1.tgz#c7356436a4d13123be2e2426a05d1dad9cbe65cf"
+  dependencies:
+    source-list-map "^2.0.0"
+    source-map "~0.5.3"
+
 webpack@^2.6.0:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/webpack/-/webpack-2.6.1.tgz#2e0457f0abb1ac5df3ab106c69c672f236785f07"
@@ -4567,6 +4664,33 @@ webpack@^2.6.0:
     webpack-sources "^0.2.3"
     yargs "^6.0.0"
 
+webpack@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-3.0.0.tgz#ee9bcebf21247f7153cb410168cab45e3a59d4d7"
+  dependencies:
+    acorn "^5.0.0"
+    acorn-dynamic-import "^2.0.0"
+    ajv "^5.1.5"
+    ajv-keywords "^2.0.0"
+    async "^2.1.2"
+    enhanced-resolve "^3.0.0"
+    escope "^3.6.0"
+    interpret "^1.0.0"
+    json-loader "^0.5.4"
+    json5 "^0.5.1"
+    loader-runner "^2.3.0"
+    loader-utils "^1.1.0"
+    memory-fs "~0.4.1"
+    mkdirp "~0.5.0"
+    node-libs-browser "^2.0.0"
+    source-map "^0.5.3"
+    supports-color "^3.1.0"
+    tapable "~0.2.5"
+    uglifyjs-webpack-plugin "^0.4.4"
+    watchpack "^1.3.1"
+    webpack-sources "^1.0.1"
+    yargs "^6.0.0"
+
 whatwg-fetch@>=0.10.0:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.3.tgz#9c84ec2dcf68187ff00bc64e1274b442176e1c84"
@@ -4595,10 +4719,6 @@ window-size@0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.0.tgz#5438cd2ea93b202efa3a19fe8887aee7c94f9c9d"
 
-window-size@^0.1.2:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.4.tgz#f8e1aa1ee5a53ec5bf151ffa09742a6ad7697876"
-
 window-size@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.2.0.tgz#b4315bb4214a3d7058ebeee892e13fa24d98b075"
@@ -4657,7 +4777,7 @@ xtend@~2.1.1:
   dependencies:
     object-keys "~0.4.0"
 
-y18n@^3.2.0, y18n@^3.2.1:
+y18n@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
 
@@ -4753,14 +4873,3 @@ yargs@~3.10.0:
     cliui "^2.1.0"
     decamelize "^1.0.0"
     window-size "0.1.0"
-
-yargs@~3.29.0:
-  version "3.29.0"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.29.0.tgz#1aab9660eae79d8b8f675bcaeeab6ee34c2cf69c"
-  dependencies:
-    camelcase "^1.2.1"
-    cliui "^3.0.3"
-    decamelize "^1.0.0"
-    os-locale "^1.4.0"
-    window-size "^0.1.2"
-    y18n "^3.2.0"