diff --git a/.gitignore b/.gitignore
index 4f8729f34..1de1427c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@ build-legacy
 tmp
 bin
 .outputParameter
+flatten
 
 ## Core latex/pdflatex auxiliary files:
 *.aux
diff --git a/migrations/2_deploy_contracts.js b/migrations/2_deploy_contracts.js
new file mode 100644
index 000000000..2e73a81b7
--- /dev/null
+++ b/migrations/2_deploy_contracts.js
@@ -0,0 +1,17 @@
+/* globals artifacts */
+
+const ApprovedTransfer = artifacts.require("ApprovedTransfer");
+const GuardianStorage = artifacts.require("GuardianStorage");
+
+module.exports = (deployer, network) => {
+  console.log(`## ${network} network ##`);
+  deployer.deploy(
+    ApprovedTransfer,
+    "0x22Ce12a6dFCF7d67c3DbEF01B19707077b528223",
+    "0x3bD35C298Ea89EfA0EF2dB208aB562E9e3F89DF4",
+    "0x0479B49a95c6bF395F1fC7d0118b44c752C7c410",
+    "0x0A1545B32D7cdea1EeD2fb259A82AcFE5e75962C",
+    "0xc778417E063141139Fce010982780140Aa0cD5Ab");
+
+  deployer.deploy(GuardianStorage);
+};
diff --git a/package-lock.json b/package-lock.json
index e9d5703b4..f263b14fa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,6 +18,19 @@
         "@babel/highlight": "^7.10.4"
       }
     },
+    "@babel/helper-module-imports": {
+      "version": "7.12.1",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.12.1.tgz",
+      "integrity": "sha512-ZeC1TlMSvikvJNy1v/wPIazCu3NdOwgYZLIkmIyAsGhqkNpiDoQQRmaCK8YP4Pq3GPTLPV9WXaPCJKvx06JxKA==",
+      "requires": {
+        "@babel/types": "^7.12.1"
+      }
+    },
+    "@babel/helper-plugin-utils": {
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-plugin-utils/-/helper-plugin-utils-7.10.4.tgz",
+      "integrity": "sha512-O4KCvQA6lLiMU9l2eawBPMf1xPP8xPfB3iEQw150hOVTqj/rfXz0ThTb4HEzqQfs2Bmo5Ay8BzxfzVtBrr9dVg=="
+    },
     "@babel/helper-validator-identifier": {
       "version": "7.10.4",
       "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.4.tgz",
@@ -33,6 +46,58 @@
         "js-tokens": "^4.0.0"
       }
     },
+    "@babel/plugin-transform-runtime": {
+      "version": "7.12.1",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.12.1.tgz",
+      "integrity": "sha512-Ac/H6G9FEIkS2tXsZjL4RAdS3L3WHxci0usAnz7laPWUmFiGtj7tIASChqKZMHTSQTQY6xDbOq+V1/vIq3QrWg==",
+      "requires": {
+        "@babel/helper-module-imports": "^7.12.1",
+        "@babel/helper-plugin-utils": "^7.10.4",
+        "resolve": "^1.8.1",
+        "semver": "^5.5.1"
+      },
+      "dependencies": {
+        "resolve": {
+          "version": "1.18.1",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.18.1.tgz",
+          "integrity": "sha512-lDfCPaMKfOJXjy0dPayzPdF1phampNWr3qFCjAu+rw/qbQmr5jWH5xN2hwh9QKfw9E5v4hwV7A+jrCmL8yjjqA==",
+          "requires": {
+            "is-core-module": "^2.0.0",
+            "path-parse": "^1.0.6"
+          }
+        },
+        "semver": {
+          "version": "5.7.1",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
+        }
+      }
+    },
+    "@babel/runtime": {
+      "version": "7.12.1",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.12.1.tgz",
+      "integrity": "sha512-J5AIf3vPj3UwXaAzb5j1xM4WAQDX3EMgemF8rjCP3SoW09LfRKAXQKt6CoVYl230P6iWdRcBbnLDDdnqWxZSCA==",
+      "requires": {
+        "regenerator-runtime": "^0.13.4"
+      }
+    },
+    "@babel/types": {
+      "version": "7.12.1",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.12.1.tgz",
+      "integrity": "sha512-BzSY3NJBKM4kyatSOWh3D/JJ2O3CVzBybHWxtgxnggaxEuaSTTDqeiSb/xk9lrkw2Tbqyivw5ZU4rT+EfznQsA==",
+      "requires": {
+        "@babel/helper-validator-identifier": "^7.10.4",
+        "lodash": "^4.17.19",
+        "to-fast-properties": "^2.0.0"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+        }
+      }
+    },
     "@codechecks/client": {
       "version": "0.1.10",
       "resolved": "https://registry.npmjs.org/@codechecks/client/-/client-0.1.10.tgz",
@@ -698,6 +763,74 @@
       "integrity": "sha512-UIfVKsXSXocKnn5+RNklUXNoGd/JVj7V8KmC48TQzmjU33HQI86PX0JDS7SpHMHasI3w9X//1q7Lu7nZtj3Zzg==",
       "dev": true
     },
+    "@truffle/hdwallet-provider": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@truffle/hdwallet-provider/-/hdwallet-provider-1.1.1.tgz",
+      "integrity": "sha512-Gw5lk2dUs6NhLcaF49FuuL3Qv1Setpgr9uUhf7voIS/1OD4ar2CW9Zv7QJiR5m0PD/b8SUqbIckq0evY4Mendg==",
+      "requires": {
+        "@trufflesuite/web3-provider-engine": "15.0.13-1",
+        "@types/web3": "^1.0.20",
+        "any-promise": "^1.3.0",
+        "bindings": "^1.5.0",
+        "ethereum-cryptography": "^0.1.3",
+        "ethereum-protocol": "^1.0.1",
+        "ethereumjs-tx": "^1.0.0",
+        "ethereumjs-util": "^6.1.0",
+        "ethereumjs-wallet": "^0.6.3",
+        "source-map-support": "^0.5.19"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw=="
+        },
+        "ethereum-common": {
+          "version": "0.0.18",
+          "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.0.18.tgz",
+          "integrity": "sha1-L9w1dvIykDNYl26znaeDIT/5Uj8="
+        },
+        "ethereumjs-tx": {
+          "version": "1.3.7",
+          "resolved": "https://registry.npmjs.org/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz",
+          "integrity": "sha512-wvLMxzt1RPhAQ9Yi3/HKZTn0FZYpnsmQdbKYfUUpi4j1SEIcbkd9tndVjcPrufY3V7j2IebOpC00Zp2P/Ay2kA==",
+          "requires": {
+            "ethereum-common": "^0.0.18",
+            "ethereumjs-util": "^5.0.0"
+          },
+          "dependencies": {
+            "ethereumjs-util": {
+              "version": "5.2.1",
+              "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz",
+              "integrity": "sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==",
+              "requires": {
+                "bn.js": "^4.11.0",
+                "create-hash": "^1.1.2",
+                "elliptic": "^6.5.2",
+                "ethereum-cryptography": "^0.1.3",
+                "ethjs-util": "^0.1.3",
+                "rlp": "^2.0.0",
+                "safe-buffer": "^5.1.1"
+              }
+            }
+          }
+        },
+        "ethereumjs-util": {
+          "version": "6.2.1",
+          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-6.2.1.tgz",
+          "integrity": "sha512-W2Ktez4L01Vexijrm5EB6w7dg4n/TgpoYU4avuT5T3Vmnw/eCRtiBrJfQYS/DCSvDIOLn2k57GcHdeBcgVxAqw==",
+          "requires": {
+            "@types/bn.js": "^4.11.3",
+            "bn.js": "^4.11.0",
+            "create-hash": "^1.1.2",
+            "elliptic": "^6.5.2",
+            "ethereum-cryptography": "^0.1.3",
+            "ethjs-util": "0.1.6",
+            "rlp": "^2.2.3"
+          }
+        }
+      }
+    },
     "@truffle/interface-adapter": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/@truffle/interface-adapter/-/interface-adapter-0.3.3.tgz",
@@ -1834,6 +1967,260 @@
         }
       }
     },
+    "@trufflesuite/eth-json-rpc-filters": {
+      "version": "4.1.2-1",
+      "resolved": "https://registry.npmjs.org/@trufflesuite/eth-json-rpc-filters/-/eth-json-rpc-filters-4.1.2-1.tgz",
+      "integrity": "sha512-/MChvC5dw2ck9NU1cZmdovCz2VKbOeIyR4tcxDvA5sT+NaL0rA2/R5U0yI7zsbo1zD+pgqav77rQHTzpUdDNJQ==",
+      "requires": {
+        "@trufflesuite/eth-json-rpc-middleware": "^4.4.2-0",
+        "await-semaphore": "^0.1.3",
+        "eth-query": "^2.1.2",
+        "json-rpc-engine": "^5.1.3",
+        "lodash.flatmap": "^4.5.0",
+        "safe-event-emitter": "^1.0.1"
+      }
+    },
+    "@trufflesuite/eth-json-rpc-infura": {
+      "version": "4.0.3-0",
+      "resolved": "https://registry.npmjs.org/@trufflesuite/eth-json-rpc-infura/-/eth-json-rpc-infura-4.0.3-0.tgz",
+      "integrity": "sha512-xaUanOmo0YLqRsL0SfXpFienhdw5bpQ1WEXxMTRi57az4lwpZBv4tFUDvcerdwJrxX9wQqNmgUgd1BrR01dumw==",
+      "requires": {
+        "@trufflesuite/eth-json-rpc-middleware": "^4.4.2-1",
+        "cross-fetch": "^2.1.1",
+        "eth-json-rpc-errors": "^1.0.1",
+        "json-rpc-engine": "^5.1.3"
+      },
+      "dependencies": {
+        "eth-json-rpc-errors": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/eth-json-rpc-errors/-/eth-json-rpc-errors-1.1.1.tgz",
+          "integrity": "sha512-WT5shJ5KfNqHi9jOZD+ID8I1kuYWNrigtZat7GOQkvwo99f8SzAVaEcWhJUv656WiZOAg3P1RiJQANtUmDmbIg==",
+          "requires": {
+            "fast-safe-stringify": "^2.0.6"
+          }
+        }
+      }
+    },
+    "@trufflesuite/eth-json-rpc-middleware": {
+      "version": "4.4.2-1",
+      "resolved": "https://registry.npmjs.org/@trufflesuite/eth-json-rpc-middleware/-/eth-json-rpc-middleware-4.4.2-1.tgz",
+      "integrity": "sha512-iEy9H8ja7/8aYES5HfrepGBKU9n/Y4OabBJEklVd/zIBlhCCBAWBqkIZgXt11nBXO/rYAeKwYuE3puH3ByYnLA==",
+      "requires": {
+        "@trufflesuite/eth-sig-util": "^1.4.2",
+        "btoa": "^1.2.1",
+        "clone": "^2.1.1",
+        "eth-json-rpc-errors": "^1.0.1",
+        "eth-query": "^2.1.2",
+        "ethereumjs-block": "^1.6.0",
+        "ethereumjs-tx": "^1.3.7",
+        "ethereumjs-util": "^5.1.2",
+        "ethereumjs-vm": "^2.6.0",
+        "fetch-ponyfill": "^4.0.0",
+        "json-rpc-engine": "^5.1.3",
+        "json-stable-stringify": "^1.0.1",
+        "pify": "^3.0.0",
+        "safe-event-emitter": "^1.0.1"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw=="
+        },
+        "eth-json-rpc-errors": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/eth-json-rpc-errors/-/eth-json-rpc-errors-1.1.1.tgz",
+          "integrity": "sha512-WT5shJ5KfNqHi9jOZD+ID8I1kuYWNrigtZat7GOQkvwo99f8SzAVaEcWhJUv656WiZOAg3P1RiJQANtUmDmbIg==",
+          "requires": {
+            "fast-safe-stringify": "^2.0.6"
+          }
+        },
+        "ethereum-common": {
+          "version": "0.0.18",
+          "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.0.18.tgz",
+          "integrity": "sha1-L9w1dvIykDNYl26znaeDIT/5Uj8="
+        },
+        "ethereumjs-tx": {
+          "version": "1.3.7",
+          "resolved": "https://registry.npmjs.org/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz",
+          "integrity": "sha512-wvLMxzt1RPhAQ9Yi3/HKZTn0FZYpnsmQdbKYfUUpi4j1SEIcbkd9tndVjcPrufY3V7j2IebOpC00Zp2P/Ay2kA==",
+          "requires": {
+            "ethereum-common": "^0.0.18",
+            "ethereumjs-util": "^5.0.0"
+          }
+        },
+        "ethereumjs-util": {
+          "version": "5.2.1",
+          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz",
+          "integrity": "sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==",
+          "requires": {
+            "bn.js": "^4.11.0",
+            "create-hash": "^1.1.2",
+            "elliptic": "^6.5.2",
+            "ethereum-cryptography": "^0.1.3",
+            "ethjs-util": "^0.1.3",
+            "rlp": "^2.0.0",
+            "safe-buffer": "^5.1.1"
+          }
+        },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY="
+        }
+      }
+    },
+    "@trufflesuite/eth-sig-util": {
+      "version": "1.4.2",
+      "resolved": "https://registry.npmjs.org/@trufflesuite/eth-sig-util/-/eth-sig-util-1.4.2.tgz",
+      "integrity": "sha512-+GyfN6b0LNW77hbQlH3ufZ/1eCON7mMrGym6tdYf7xiNw9Vv3jBO72bmmos1EId2NgBvPMhmYYm6DSLQFTmzrA==",
+      "requires": {
+        "ethereumjs-abi": "^0.6.8",
+        "ethereumjs-util": "^5.1.1"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw=="
+        },
+        "ethereumjs-util": {
+          "version": "5.2.1",
+          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz",
+          "integrity": "sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==",
+          "requires": {
+            "bn.js": "^4.11.0",
+            "create-hash": "^1.1.2",
+            "elliptic": "^6.5.2",
+            "ethereum-cryptography": "^0.1.3",
+            "ethjs-util": "^0.1.3",
+            "rlp": "^2.0.0",
+            "safe-buffer": "^5.1.1"
+          }
+        }
+      }
+    },
+    "@trufflesuite/web3-provider-engine": {
+      "version": "15.0.13-1",
+      "resolved": "https://registry.npmjs.org/@trufflesuite/web3-provider-engine/-/web3-provider-engine-15.0.13-1.tgz",
+      "integrity": "sha512-6u3x/iIN5fyj8pib5QTUDmIOUiwAGhaqdSTXdqCu6v9zo2BEwdCqgEJd1uXDh3DBmPRDfiZ/ge8oUPy7LerpHg==",
+      "requires": {
+        "@trufflesuite/eth-json-rpc-filters": "^4.1.2-1",
+        "@trufflesuite/eth-json-rpc-infura": "^4.0.3-0",
+        "@trufflesuite/eth-json-rpc-middleware": "^4.4.2-1",
+        "@trufflesuite/eth-sig-util": "^1.4.2",
+        "async": "^2.5.0",
+        "backoff": "^2.5.0",
+        "clone": "^2.0.0",
+        "cross-fetch": "^2.1.0",
+        "eth-block-tracker": "^4.4.2",
+        "eth-json-rpc-errors": "^2.0.2",
+        "ethereumjs-block": "^1.2.2",
+        "ethereumjs-tx": "^1.2.0",
+        "ethereumjs-util": "^5.1.5",
+        "ethereumjs-vm": "^2.3.4",
+        "json-stable-stringify": "^1.0.1",
+        "promise-to-callback": "^1.0.0",
+        "readable-stream": "^2.2.9",
+        "request": "^2.85.0",
+        "semaphore": "^1.0.3",
+        "ws": "^5.1.1",
+        "xhr": "^2.2.0",
+        "xtend": "^4.0.1"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw=="
+        },
+        "ethereum-common": {
+          "version": "0.0.18",
+          "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.0.18.tgz",
+          "integrity": "sha1-L9w1dvIykDNYl26znaeDIT/5Uj8="
+        },
+        "ethereumjs-tx": {
+          "version": "1.3.7",
+          "resolved": "https://registry.npmjs.org/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz",
+          "integrity": "sha512-wvLMxzt1RPhAQ9Yi3/HKZTn0FZYpnsmQdbKYfUUpi4j1SEIcbkd9tndVjcPrufY3V7j2IebOpC00Zp2P/Ay2kA==",
+          "requires": {
+            "ethereum-common": "^0.0.18",
+            "ethereumjs-util": "^5.0.0"
+          }
+        },
+        "ethereumjs-util": {
+          "version": "5.2.1",
+          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz",
+          "integrity": "sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==",
+          "requires": {
+            "bn.js": "^4.11.0",
+            "create-hash": "^1.1.2",
+            "elliptic": "^6.5.2",
+            "ethereum-cryptography": "^0.1.3",
+            "ethjs-util": "^0.1.3",
+            "rlp": "^2.0.0",
+            "safe-buffer": "^5.1.1"
+          }
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
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+            "util-deprecate": "~1.0.1"
+          },
+          "dependencies": {
+            "safe-buffer": {
+              "version": "5.1.2",
+              "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+              "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+            }
+          }
+        },
+        "string_decoder": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+          "requires": {
+            "safe-buffer": "~5.1.0"
+          },
+          "dependencies": {
+            "safe-buffer": {
+              "version": "5.1.2",
+              "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+              "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+            }
+          }
+        }
+      }
+    },
     "methods": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/methods/-/methods-1.1.2.tgz",
@@ -8163,8 +9342,7 @@
     "path-parse": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
-      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==",
-      "dev": true
+      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw=="
     },
     "path-to-regexp": {
       "version": "0.1.7",
@@ -8246,6 +9424,11 @@
         "semver-compare": "^1.0.0"
       }
     },
+    "precond": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/precond/-/precond-0.2.3.tgz",
+      "integrity": "sha1-qpWRvKokkj8eD0hJ0kD0fvwQdaw="
+    },
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
@@ -8270,8 +9453,7 @@
     "process-nextick-args": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
-      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
-      "dev": true
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag=="
     },
     "progress": {
       "version": "2.0.3",
@@ -8287,6 +9469,15 @@
         "asap": "~2.0.6"
       }
     },
+    "promise-to-callback": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/promise-to-callback/-/promise-to-callback-1.0.0.tgz",
+      "integrity": "sha1-XSp0kBC/tn2WNZj805YHRqaP7vc=",
+      "requires": {
+        "is-fn": "^1.0.0",
+        "set-immediate-shim": "^1.0.1"
+      }
+    },
     "promise.allsettled": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/promise.allsettled/-/promise.allsettled-1.0.2.tgz",
@@ -8308,6 +9499,11 @@
         "ipaddr.js": "1.9.1"
       }
     },
+    "prr": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/prr/-/prr-1.0.1.tgz",
+      "integrity": "sha1-0/wRS6BplaRexok/SEzrHXj19HY="
+    },
     "psl": {
       "version": "1.8.0",
       "resolved": "https://registry.npmjs.org/psl/-/psl-1.8.0.tgz",
@@ -8542,6 +9738,11 @@
         }
       }
     },
+    "regenerator-runtime": {
+      "version": "0.13.7",
+      "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz",
+      "integrity": "sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew=="
+    },
     "regexpp": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-2.0.1.tgz",
@@ -8725,6 +9926,11 @@
       "integrity": "sha512-zb/1OuZ6flOlH6tQyMPUrE3x3Ulxjlo9WIVXR4yVYi4H9UXQaeIsPbLn2R3O3vQCnDKkAl2qHiuocKKX4Tz/Sw==",
       "dev": true
     },
+    "rustbn.js": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/rustbn.js/-/rustbn.js-0.2.0.tgz",
+      "integrity": "sha512-4VlvkRUuCJvr2J6Y0ImW7NvTCriMi7ErOAqWk1y69vAdoNIzCF3yPmgeNzx+RQTLEDFq5sHfscn1MwHxP9hNfA=="
+    },
     "rxjs": {
       "version": "6.6.3",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.6.3.tgz",
@@ -8738,6 +9944,21 @@
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
       "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="
     },
+    "safe-event-emitter": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/safe-event-emitter/-/safe-event-emitter-1.0.1.tgz",
+      "integrity": "sha512-e1wFe99A91XYYxoQbcq2ZJUWurxEyP8vfz7A7vuUe1s95q8r5ebraVaA1BukYJcpM6V16ugWoD9vngi8Ccu5fg==",
+      "requires": {
+        "events": "^3.0.0"
+      },
+      "dependencies": {
+        "events": {
+          "version": "3.2.0",
+          "resolved": "https://registry.npmjs.org/events/-/events-3.2.0.tgz",
+          "integrity": "sha512-/46HWwbfCX2xTawVfkKLGxMifJYQBWMwY1mjywRtb4c9x8l5NP3KoJtnIOiL1hfdRkIuYhETxQlo62IF8tcnlg=="
+        }
+      }
+    },
     "safer-buffer": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
@@ -8803,6 +10024,11 @@
         }
       }
     },
+    "semaphore": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/semaphore/-/semaphore-1.1.0.tgz",
+      "integrity": "sha512-O4OZEaNtkMd/K0i6js9SL+gqy0ZCBMgUvlSqHKi4IBdjhe7wB8pwztUk1BbZ1fmrvpwFrPbHzqd2w5pTcJH6LA=="
+    },
     "semver": {
       "version": "7.3.2",
       "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.2.tgz",
@@ -8896,6 +10122,11 @@
       "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
       "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc="
     },
+    "set-immediate-shim": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz",
+      "integrity": "sha1-SysbJ+uAip+NzEgaWOXlb1mfP2E="
+    },
     "setimmediate": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/setimmediate/-/setimmediate-1.0.5.tgz",
@@ -9465,7 +10696,6 @@
       "version": "0.5.19",
       "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.19.tgz",
       "integrity": "sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==",
-      "dev": true,
       "requires": {
         "buffer-from": "^1.0.0",
         "source-map": "^0.6.0"
@@ -9474,8 +10704,7 @@
         "source-map": {
           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-          "dev": true
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
         }
       }
     },
@@ -9974,6 +11203,11 @@
       "integrity": "sha512-lx9B5iv7msuFYE3dytT+KE5tap+rNYw+K4jVkb9R/asAb+pbBSM17jtunHplhBe6RRJdZx3Pn2Jph24O32mOVg==",
       "dev": true
     },
+    "to-fast-properties": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
+      "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4="
+    },
     "to-readable-stream": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/to-readable-stream/-/to-readable-stream-1.0.0.tgz",
@@ -10011,6 +11245,18 @@
         "original-require": "1.0.1"
       }
     },
+    "truffle-plugin-verify": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/truffle-plugin-verify/-/truffle-plugin-verify-0.5.0.tgz",
+      "integrity": "sha512-VDT0FlFZisceRMrmlkKKiN/EmvFI6n6piAq9PQTrqWX6DdC64cE1RpmeLewIqL5L+5CVeLcApJMd58BpLUqNJg==",
+      "dev": true,
+      "requires": {
+        "axios": "0.19.2",
+        "cli-logger": "0.5.40",
+        "delay": "4.3.0",
+        "querystring": "0.2.0"
+      }
+    },
     "ts-essentials": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/ts-essentials/-/ts-essentials-1.0.4.tgz",
@@ -10663,6 +11909,11 @@
         }
       }
     },
+    "whatwg-fetch": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz",
+      "integrity": "sha512-dcQ1GWpOD/eEQ97k66aiEVpNnapVj90/+R+SXTPYGHpYBBypfKJEQjLrvMZ7YXbKm21gXd4NcuxUTjiv1YtLng=="
+    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
diff --git a/package.json b/package.json
index 1b9fd76e4..a90b3f3c5 100644
--- a/package.json
+++ b/package.json
@@ -59,6 +59,7 @@
   "homepage": "https://github.com/argentlabs/argent-contracts#readme",
   "dependencies": {
     "@openzeppelin/contracts": "3.0.1",
+    "@truffle/hdwallet-provider": "^1.1.1",
     "@uniswap/lib": "^1.1.2",
     "@uniswap/v2-core": "^1.0.1",
     "ajv": "^6.10.0",
@@ -94,6 +95,7 @@
     "eslint-plugin-import": "^2.20.1",
     "eth-gas-reporter": "^0.2.19",
     "mocha-junit-reporter": "^2.0.0",
-    "solidity-coverage": "^0.7.11"
+    "solidity-coverage": "^0.7.11",
+    "truffle-plugin-verify": "^0.5.0"
   }
 }
diff --git a/truffle-config.base.js b/truffle-config.base.js
index b110d4a1e..bf8709fc6 100644
--- a/truffle-config.base.js
+++ b/truffle-config.base.js
@@ -18,7 +18,9 @@
  *
  */
 
-// const HDWalletProvider = require('@truffle/hdwallet-provider');
+const HDWalletProvider = require("@truffle/hdwallet-provider");
+require("dotenv").config();
+
 // const infuraKey = "fj4jll3k.....";
 //
 // const fs = require('fs');
@@ -48,6 +50,11 @@ module.exports = {
       gas: 20700000
     },
 
+    ropsten: {
+      provider: () => new HDWalletProvider(`${process.env.MNEMONIC}`, `https://ropsten.infura.io/v3/${process.env.INFURA_ID}`),
+      network_id: 3,
+    },
+
     // Another network with more advanced options...
     // advanced: {
     // port: 8777,             // Custom port
@@ -104,5 +111,9 @@ module.exports = {
     },
   },
 
-  plugins: ["solidity-coverage"],
+  plugins: ["solidity-coverage", "truffle-plugin-verify"],
+
+  api_keys: {
+    etherscan: process.env.ETHERSCAN_API_KEY
+  },
 };