Verify contract on CeloScan (#114)

* Verify on Celo scan

* PR comments

.env.mainnet → .env.celo

@@ -9,3 +9,5 @@ MULTISIG_SIGNER_1 = 0x91f2437f5C8e7A3879e14a75a7C5b4CccC76023a
 MULTISIG_SIGNER_2 = 0x3784a50f16af1C135b741914449BEa4AfdB0c5c4
 MULTISIG_SIGNER_3 = 0x1f5979355411dF24c5Ce21Df5bD9f2fff418c194
 MULTISIG_SIGNER_4 = 0x4d82BfC8823a4F3AF82B0AdE52ff3e2d74A04757
+
+CELO_SCAN_API_KEY = CELOSCAN_API_KEY

.env.example

@@ -8,4 +8,6 @@ MULTISIG_SIGNER_2 = 0x2B73d814BA2231606f9d856C7C20423915F96711
 MULTISIG_SIGNER_3 = 0x2B73d814BA2231606f9d856C7C20423915F96711
 MULTISIG_SIGNER_4 = 0x2B73d814BA2231606f9d856C7C20423915F96711
 DEPLOYER = 0x5bC1C4C1D67C5E4384189302BC653A611568a788
-VALIDATOR_GROUPS = 0xc24baeac0Fd189637112B7e33d22FfF2730aF993,0xb35Be22BccB0dB9dC62967dcF15fEB97C20f854e,0x3D451dd723797b3DE938C5B22412032B6452591A,0x15Ed3f6b79F5Fb9Ef1D99D37314Dd626b3005F0b,0x34649AdA2cB44D851a2103Feaa8922DedDABfc1c,0xc8A81D473992c7c6D3F469A8263F24914625709d,0x81AE1C73A326325216E25ff1af9EA3871195036E,0xD72Ed2e3db984bAC3bB351FE652200dE527eFfcf
+VALIDATOR_GROUPS = 0xc24baeac0Fd189637112B7e33d22FfF2730aF993,0xb35Be22BccB0dB9dC62967dcF15fEB97C20f854e,0x3D451dd723797b3DE938C5B22412032B6452591A,0x15Ed3f6b79F5Fb9Ef1D99D37314Dd626b3005F0b,0x34649AdA2cB44D851a2103Feaa8922DedDABfc1c,0xc8A81D473992c7c6D3F469A8263F24914625709d,0x81AE1C73A326325216E25ff1af9EA3871195036E,0xD72Ed2e3db984bAC3bB351FE652200dE527eFfcf
+
+CELO_SCAN_API_KEY = CELOSCAN_API_KEY

README.md

@@ -51,6 +51,29 @@ Alfajores :
 ```
 yarn verify:deploy --network alfajores
 ```
+
+## Verify on CeloScan
+1. Get CeloScan api key
+1. Update api key in hardhat.config.ts (etherscan.apiKey)
+1. Get constructor arguments of deployed smart contract
+  * Find contract in `deployments/[network]` (example deployments/celo/MultiSig_Proxy.json)
+  * In root level there are constructur arguments in `args`
+4. Save constructor arguments into js file
+```
+module.exports = [
+    "0xb78AB3f89C97C0291B747C3Ba8814b5AA47AEcF1",
+    "4814d6b8a8394fe8b363a892b6618b21",
+  ];
+```
+5. Verify smart contract
+```
+yarn hardhat verify --network [network] --constructor-args [path_to_js_file] [contract_address]
+```
+example
+```
+yarn hardhat verify --network celo --constructor-args arguments.js 0x78daa21fce4d30e74ff745da3204764a0ad40179
+```
+
 ## Deploying to local CELO node
 You may desire to deploy using an unlocked account in a private node. In that case, you can use the following commands :
 

hardhat.config.ts

@@ -4,6 +4,7 @@ import "@nomiclabs/hardhat-ethers";
 import "@nomiclabs/hardhat-waffle";
 import "@nomiclabs/hardhat-web3";
 import "@typechain/hardhat";
+import "@nomiclabs/hardhat-etherscan";
 import "@celo/staked-celo-hardhat-deploy";
 import "./lib/contractkit.plugin";
 import minimist from "minimist";
@@ -86,12 +87,27 @@ module.exports = {
       gas: 13000000,
       gasPrice: 100000000000,
     },
-    mainnet: {
+    celo: {
       url: `https://forno.celo.org/`,
       gas: 13000000,
       gasPrice: 20000000000,
     },
   },
+  etherscan: {
+    // Your API key for Etherscan
+    // Obtain one at https://celoscan.io
+    apiKey: process.env.CELO_SCAN_API_KEY,
+    customChains: [
+      {
+        network: "celo",
+        chainId: 42220,
+        urls: {
+          apiURL: "https://api.celoscan.io/api",
+          browserURL: "https://celoscan.io",
+        },
+      },
+    ],
+  },
   solidity: {
     compilers: [
       {

package.json

@@ -11,6 +11,7 @@
     "@celo/connect": "^1.5.2",
     "@celo/contractkit": "^1.5.2",
     "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
+    "@nomiclabs/hardhat-etherscan": "^3.1.6",
     "@nomiclabs/hardhat-waffle": "^2.0.2",
     "@nomiclabs/hardhat-web3": "^2.0.0",
     "@openzeppelin/contracts": "^4.4.2",