Demo frontend to demonstrate Ethereum token approval methods:
ERC-20 token approval transaction: IERC20(tokenAddress).approve(spender, allowance).
Requires execution of onchain transaction prior to transferring tokens.
EIP-2612 signed token approval.
Requires wallet to sign message and signature is bundled with token transfer transaction.
EIP-5792 - wallet API to enable apps to request multiple batched action with wallet_sendCalls
|---- EIP-4337 - Smart contract wallet
|---- EIP-7702 - EOA wallet (private key)
The demo app sends EIP-5792 request to wallet and wallet must implement corresponding methods to perform batch transaction depending on wallet type.
Demo app is a NextJS frontend using connectkit and wagmi for Web3 interactions. The app uses Sepolia testnet, and supplies tokens to Aave V3 as a demonstration of the token transfer step.