# 實作 Mainnet fork with hardhat/Ganache-cli

run local ethereum mainnet fork and connect MetaMask.

### 以hardhat run
reference: https://hardhat.org/hardhat-network/guides/mainnet-forking.html

1. 到 https://www.alchemy.com/ 註冊
2. Apps -> view key 拿取key
3. terminal run

npx hardhat node --fork https://eth-mainnet.alchemyapi.io/v2/<key>


4. 連上 metamask

如果新增網路，chain ID = 31337.
metamask --> 匯入帳戶 --> 貼上run 出來的private key就會成功如下

### 以Ganache-cli run

ganache-cli -d -f https://eth-mainnet.alchemyapi.io/v2/<key> -p 7545

connect to metamask, chain ID = 1337.




###### tags: `Solidity`