Bankless Wallet

Screenshots

Problem Statement

Unlike traditional wallets with a defined owner, Bankless Wallet operates on the principle that ownership is established through the possession of a valid zero-knowledge proof (zk-proof). This ensures a high level of privacy and security, as the identity of the wallet owner remains confidential. Users can pay transaction fees in GHO, providing a more stable value compared to the native cryptocurrency of the blockchain.

Solution

The Project is divided into 4 parts :Circuits: Written in Noir (https://noir-lang.org/). Contains 2 circuits, the WebAuthn Passkey Circuit which verifies the possession of the passkey, and the Social Recovery Circuit, which helps in the recovery of the wallet i.e. when you change your passkey.Contracts: Contains a forwarder that relays a meta-transaction to the desired destination, a factory contract that has ChainLink CCIP implemented to create a multi-chain wallet, and lastly Wallet Contract that computes gas, converts into GHO using ChainLink price feeds and deducts GHO from your wallet to a gas tank contract.Frontend: Made with Nextjs, TailwindCSS & JavaScript. Frontend is not deployed currently. The demo video contains the demonstration in localhost.Server: Made with Expressjs to compute zk-proofs which takes up lots of RAM and CPU usage when computing. We want every device should have the same computation time and if you have a mobile or a potato PC, we don't want you to wait for 2 mins to generate. a single proof.