Solidity encodePacked + keccak. Compute keccak256(abi.encodePacked(...)) for address/uint/bytes/string values - commitment schemes, merkle leaves, signature digests.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.001000 USDC | 0xDeA9...0c0b |
| Base | exact | 0.00 tokens | 0xDeA9...0c0b |