3 Services from kertivo.com

Verifies a USDC payment on Base mainnet — checks confirmation, real USDC transfer, correct recipient and amount, and flags fake tokens or lookalike addresses

Deeply verifies a Base USDC payment by checking confirmations, payTo/amount match, fake-token and lookalike warnings, and the payer's full USDC funding history with top funders and a sha256 receipt

Full-history address-poisoning detection for USDC sends on Base, pulling up to the sender's 500 most recent Base USDC transfers via Blockscout to check if the recipient is a lookalike or previously-unseen address.