Cross-Chain NFT Minting with RIP-7755

Prerequisites

• Node.js v18.17.1
• Bun v1.1.29
• Forge v0.2.0

Setup

After cloning the repo, run make setup to install dependencies and build the project.

Assignment

There are two key components that need to be implemented:

1. Implement the Prover contract for the destination L2 chain.
2. Implement the rip7755Mint function in the demo service.

The Prover contract should adhere to the IProver interface and implement validation of a nested storage proof. To properly set up the storage proof parameters, pay attention to the Rollup contract. This is where our mock-L2 chains are posting roots on L1 - notice how the destination L2's state root is used to post data there.

Once the Prover contract is implemented, try running the test file to see if it passes!

The rip7755Mint function in the demo service should construct an RIP-7755 request and submit to the mock Base RIP7755Outbox contract. The target call should be the mint function in our simple NFT contract.

Run The App End-to-End

Start Mock L1

Run make start-mock-L1 to start the mock L1 chain.

Start Mock Base Chain

In a new terminal window, run make start-mock-base to start the mock Base chain.

Start Mock Arbitrum Chain

In a new terminal window, run make start-mock-arbitrum to start the mock Arbitrum chain.

Setup Contracts

In a new terminal window, run make setup-contracts to setup the contracts.

Start Rollup Syncer Service

In a new terminal window, run make start-syncer to start the rollup syncer service.

Start Fulfiller Service

In a new terminal window, run make start-fulfiller to start the fulfiller service.

Start Demo Service

In a new terminal window, run make demo to start the demo service.