Keccak Merkle tree and proof builder — generate indexed sorted-pair inclusion proofs with domain separation and explicit odd-node promotion.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.01 USDC | 0x8C12...f1b2 |
| Polygon | exact | $0.01 USDC | 0x8C12...f1b2 |
| Arbitrum One | exact | $0.01 USDC | 0x8C12...f1b2 |