Verify Contract

Etherscan API Key

https://etherscan.io/
到etherscan register 取得API Key

Use hardhat set API Key

npx hardhat vars set “varible name”

Example

varible name: ETHERSCAN

npx hardhat vars set ETHERSCAN
✔ Enter value: · **********************************   

Hardhat.config.js use etherscan api key

In module.exports add

etherscan: {
  apiKey: vars.get("ETHERSCAN"),
},

Use verify commad

npx hardhat verify –network “network name” address

Example

network:arbitrumSepolia
address:0xE8F6DAb9045c9Ce68D37eA95e416D54E7E5678Ef

npx hardhat verify --network arbitrumSepolia 0xE8F6DAb9045c9Ce68D37eA95e416D54E7E5678Ef

If success

Successfully submitted source code for contract
contracts/token.sol:Token at 0xE8F6DAb9045c9Ce68D37eA95e416D54E7E5678Ef
for verification on the block explorer. Waiting for verification result...

Successfully verified contract Token on the block explorer.
https://sepolia.arbiscan.io/address/0xE8F6DAb9045c9Ce68D37eA95e416D54E7E5678Ef#code