Snowtrace verification

README.md

@@ -50,7 +50,23 @@ In our repository we use a pre-configured file [hardhat.config.ts](https://githu
 
 You can define custom hardhat tasks in [hardhat.config.ts](https://github.com/ava-labs/avalanche-smart-contract-quickstart/blob/main/hardhat.config.ts).
 
+## Snowtrace Verification
+
+To try out Snowtrace verification, you first need to deploy a contract to an Avalanche network that's supported by Snowtrace, such as Fuji, C-Chain.
+
+In this project, copy the `env.example` file to a file named `.env`, and then edit it to fill in the details. Enter your Snowtrace API key, and the private key of the account which will send the deployment transaction. With a valid `.env` file in place, first deploy your contract:
+
+```shell
+hardhat run --network fuji scripts/deploy.ts
+```
+
+Then, copy the deployment address and paste it in to replace `DEPLOYED_CONTRACT_ADDRESS` and `CONSTRUCTOR_ARGUMENTS` if needed in this command:
+
+```shell
+npx hardhat verify --network fuji DEPLOYED_CONTRACT_ADDRESS CONSTRUCTOR_ARGUMENTS
+```
+
 ## Documentation
 
 There is a documentation under the Avalanche's official documentation repository:
-[Using Hardhat with the Avalanche C-Chain](https://docs.avax.network/build/tutorials/smart-contracts/using-hardhat-with-the-avalanche-c-chain)
+[Using Hardhat with the Avalanche C-Chain](https://docs.avax.network/build/tutorials/smart-contracts/using-hardhat-with-the-avalanche-c-chain)

env.example

@@ -0,0 +1,2 @@
+SNOWTRACE_API_KEY=
+PRIVATE_KEY=

hardhat.config.ts

@@ -1,7 +1,11 @@
+import * as dotenv from "dotenv";
 import { task } from "hardhat/config"
 import { SignerWithAddress } from "@nomiclabs/hardhat-ethers/signers"
 import { BigNumber } from "ethers"
 import "@nomiclabs/hardhat-waffle"
+import "@nomiclabs/hardhat-etherscan";
+
+dotenv.config();
 
 // When using the hardhat network, you may choose to fork Fuji or Avalanche Mainnet
 // This will allow you to debug contracts using the hardhat network while keeping the current network state
@@ -81,13 +85,16 @@ export default {
       url: 'https://api.avax-test.network/ext/bc/C/rpc',
       gasPrice: 225000000000,
       chainId: 43113,
-      accounts: []
+      accounts: process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
     },
     mainnet: {
       url: 'https://api.avax.network/ext/bc/C/rpc',
       gasPrice: 225000000000,
       chainId: 43114,
-      accounts: []
+      accounts: process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
     }
+  },
+  etherscan: {
+    apiKey: process.env.SNOWTRACE_API_KEY !== undefined ? process.env.SNOWTRACE_API_KEY : "",
   }
-}
+}

package.json

@@ -2,13 +2,15 @@
   "name": "avalanche-smart-contract-quickstart",
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.2",
+    "@nomiclabs/hardhat-etherscan": "^2.1.8",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
     "@openzeppelin/contracts": "^4.3.0",
     "@types/chai": "^4.2.21",
     "@types/mocha": "^9.0.0",
     "@types/node": "^16.7.1",
     "avalanche": "3.8.5",
     "chai": "^4.3.4",
+    "dotenv": "^10.0.0",
     "ethereum-waffle": "^3.4.0",
     "ethereumjs-tx": "^2.1.2",
     "ethers": "^5.4.5",