Uniswap Developers

Deploy a smart contract on Unichain with Foundry, then verify the deployment on Uniscan.

Requirements

ETH on Unichain is required. See Get Funds on Unichain.

The guide uses foundry for deployments. Install it by running:
```
curl -L https://foundry.paradigm.xyz | bash
```
To verify the installation:
```
forge --version
```

Add Unichain to your foundry.toml

[rpc_endpoints]
unichain = "https://sepolia.unichain.org"

Steps to Deploy

Due to the EVM-equivalence of Unichain, foundry commands should work as expected. The major difference is the network URL. In most cases, using --rpc-url unichain is sufficient

1. Navigate to your smart contract project

cd path/to/your/project

2. Deploy a smart contract

Your private key should have ETH on the Unichain network. A transaction will be created, and requires a gas fee.

forge create src/{YourContract}.sol:{ContractName} --rpc-url unichain --private-key {YourPrivateKey}

3. Verify the contract

Obtain an API key from Uniscan Sepolia.

There are two options to verify your contract:

During deployment
After deployment

During deployment provide additional flags:

--etherscan-api-key {API_KEY} --verify

After deployment:

forge verify-contract \
    --chain-id 1301 \
    --num-of-optimizations 200 \
    --watch \
    --constructor-args $(cast abi-encode "constructor(string,string,uint256,uint256)" "ForgeUSD" "FUSD" 18 1000000000000000000000) \
    --etherscan-api-key {your_etherscan_api_key} \
    --compiler-version {v0.8.20+commit.a1b79de} \
    {the_contract_address} \
    src/{YourContract}.sol:{ContractName}