An educational project demonstrating account abstraction and sponsored transaction execution using EIP-7702. This project uses Foundry for deployment, scripting, and testing.
The BatchCallAndSponsor contract enables batch execution of calls by verifying signatures over a nonce and batched call data. It supports:
- Direct execution: by the smart account itself.
- Sponsored execution: via an off-chain signature (by a sponsor).
Replay protection is provided by an internal nonce that increments after each batch execution.
- Batch transaction execution
- Off-chain signature verification using ECDSA
- Replay protection through nonce incrementation
- Support for both ETH and ERC-20 token transfers
- Foundry
- Solidity ^0.8.20
git clone https://github.com/JustUzair/bb-eip-7702.git
cd bb-eip-7702
forge build
make deploy