I followed LayerZero's docs to build an OFT V1 ERC20. These are ERC20s that can be instantly deployed/bridged to any EVM chain that LayerZero supports.

1. Clone down this repo and yarn.
2. Make your .env appropriately, there is a sample .env.example. API keys are for hardhat contract verification.
3. Modify hardhat.config.ts to the networks of your choosing.
4. Modify LayerZeroShitcoin.sol to your choosing. My contract currently mints 10M coins to the deployer.
5. Compile contract via npx hardhat compile.
6. Modify contracts/deploy-layerzeroshitcoin.ts with chains of your choosing. I did Goerli and Fantom testnet. Mainnet addresses / chainIds found here. You can deploy to as many chains as you want, ideally using a clean EOA so all the contract deployments come out to the same address.
7. Deploy using npx hardhat run scripts/deploy-layerzeroshitcoin.ts --network <NETWORK>
8. Optionally verify via npx hardhat verify --network goerli 0x3EC3EFe4f7D793938f9D1d78989F0F98799d9554 "OmniCat" "OMNI" "0xbfD2135BFfbb0B5378b56643c2Df8a87552Bfa23"
9. On every contract you've deployed, you must call setTrustedRemoteAddress on the other contracts you've deployed to whitelist them. I just do this via etherscan. So if you've deployed on 4 chains, you must call this function 3 times each (for every other chain) on all 4 contracts.

10. Finally, to transfer tokens from chain A to chain B - call sendFrom on your chain A token contract like so on etherscan:

If you run into any problems or difficulties, contact me on twitter @AzFlin!