arb-gateway

@ensdomains/arb-gateway

An instantiation of evm-gateway that targets Arbitrum - that is, it implements a CCIP-Read gateway that generates proofs of contract state on Arbitrum.

For a detailed readme and usage instructions, see the monorepo readme.

To get started, you need to have an RPC URL for both Ethereum Mainnet and Arbitrum. You also need to provide an L2_ROLLUP address which is the Rollup contract deployed on Mainnet or the Nitro Node.

How to use arb-gateway locally via cloudflare dev env (aka wrangler)

cd arb-gateway
npm install -g bun wrangler
bun install
touch .dev.vars
## set L1_PROVIDER_URL, L2_PROVIDER_URL, L2_ROLLUP
bun run dev

How to deploy arb-gateway to cloudflare

cd arb-gateway
npm install -g wrangler
wrngler login

wrangler secret put L1_PROVIDER_URL --env sepolia
wrangler secret put L2_PROVIDER_URL --env sepolia
wrangler secret put L2_ROLLUP --env sepolia
wrangler secret put ENDPOINT_URL --env sepolia
yarn deploy --env sepolia

How to test

1. Start the Nitro Test node. You can find instructions here: https://docs.arbitrum.io/node-running/how-tos/local-dev-node
2. Retrieve the Rollup address from the Node's Logs.
3. Copy the example.env file in both arb-gateway and arb-verifier, and add the Rollup address.
4. Build the Project.
5. Navigate to the Gateway directory using cd ./arb-gateway.
6. Start the Gateway by running bun run start -u http://127.0.0.1:8545/ -v http://127.0.0.1:8547/ -p 8089.
7. Open another Terminal Tab and navigate to the verifier directory using cd ./arb-verifier/.
8. Deploy contracts to the node using the command npx hardhat --network arbDevnetL2 deploy && npx hardhat --network arbDevnetL1 deploy.
9. Run the test using the command bun run test.