makoto / my-l2-app-v2

ENS L2 demo app (v2)

This is the rewrite of v1 but using EVM Gateway instead of dm3's Bedrock Resolver.

The demo allows anyone to either register subnames under op.evmgateway.eth on Optimism Goerli chain or subnames under base.evmgateway.eth on $BASE chain.

Setting up the server

gh repo clone makoto/my-l2-app-v2
cd my-l2-app-v2
yarn
cp .env.example .env // Update the constants
yarn start

Video Walkthrough

• https://www.loom.com/share/95e306023be74b0585f919e27db28a1a

Setting up the subname registrar for your own name

Set resolver of your name to one of these resolvers on Goerli

• OP L1Resolver = 0xE0356133C3c43cbb623543488E607E4e349eAA10
• Base L1Resolver = 0xE00739Fc93e27aBf44343fD5FAA151c67C0A0Aa3
• Arb L1Resolver = 0x9F3C37A6cDd5ECA7b27140856753EDBF387c06bB

Find out the corresponding l2 resovler address via DelegatableResolverFactory

On L2, each parent name will own its own resolver and you issue subnames under your resolver.

• Optimism DelegatableResolverFactory = 0x4166B7e70F14C48980Da362256D1Da9Cc8F95e13
• Base L2 DelegatableResolverFactory = 0x0e8DA38565915B7e74e2d78F80ba1BF815F34116
• Arbitrum L2 DelegatableResolverFactory = 0x94fbCE7ca1a0152cfC99F90f4421d31cf356c896

const l2resolverAddress = await DelegatableResolverFactory.predictAddress(OWNER_ADDRESS)

Set the l2 resolver address as a traget

YOURNAME = 'somenewname.eth'
node = ethers.namehash(`(base|op).{YOURNAME}`)
await L1Resolver.setTarget(node, l2resolverAddress)

Deploy l2 subname registrar

• Deploy DelegatableResolverRegistrar.sol to L2 with resolver address as target which you obtained at step 1. Take notes of the deployed registrar address

Grant the subname registrar as the root

const DelegatableResolver = new ethers.Contract(l2resolverAddress, abi, l2provider);
await DelegatableResolver.approve(encodedname, DELEGATABLE_RESOLVER_REGISRTRAR_ADDRESS, true)

Replace evmgateway.eth on this repo's code to your ENS name