Foundry

This is an example of deploying a contract using Foundry.

1. Create a Foundry project

Run the command below to initialize the Foundry project.

forge init erc20-project
cd erc20-project

2. Write the contract code

Save the ERC20 contract as an ERC20.sol file inside the src folder.

3. Set up the environment

Set the CROSS Chain information and private key in the .env file.

CHAIN_ID=612044
RPC_URL="https://testnet.cross-nexus.com:22001”
EXPLORER="https://testnet-explorer.cross-nexus.com”
explorer_api="https://testnet-explorer.cross-nexus.com/api”
PRIVATE_KEY="<Enter the private key of the account to distribute>”

Load the .env file into environment variables.

source .env

4. Compile the contract

Compile the contract with the following command.

forge build

5. Deploy the contract

Deploy the ERC20 contract to the CROSS Chain testnet with the following command.

forge create \         
--broadcast \
--rpc-url $RPC_URL \
--private-key $PRIVATE_KEY \
src/ERC20.sol:ERC20 \
--constructor-args “My ERC20” “M20” 18 1000000ether

After the deployment is complete, the transaction hash and contract address will appear.

6. Verify the contract

To verify the contract deployed with Foundry on Testnet Explorer, run the following command.

forge verify-contract \
--rpc-url $RPC_URL \
--verifier blockscout \
--verifier-url $EXPLORER_API \
--constructor-args $(cast abi-encode “constructor(string,string,uint8,uint256)” “My ERC20” “M20” 18 1000000ether) \
<deployed contract address> src/ERC20.sol:ERC20

Note: You can check the deployed contract in the CROSS Chain Testnet Explorer.