You keep a receipt anyone can check.
Pay a dime, keep a receipt. A stranger can re-check it. Two public books may disagree — that is the unique. Operator self-pay is not revenue.
A receipt binds payment to a result digest. Anyone can open it, curl it, or hand it to an agent. No merged books. No invented pay_tx on this page.
IronBridge keeps two public hash chains. They are allowed to disagree. That disagreement is stranger-checkable — not a merged ledger claim.
Open /disagree · third vantage · gauntlet · packet
GET /api/disagree— packet over both booksGET /verify— check a receipt in the browserGET /api/receipt/<id>— receipt JSON used by verify- MCP tool
ironbridge_verify_receipt— agents check a receipt without a UI
curl -sS https://ironbridge.foundation/api/disagree | head curl -sS https://ironbridge.foundation/api/receipt/<id> # MCP: ironbridge_verify_receipt
Digest recompute of disclosed bytes is keyless. LAW-25 authorship_seal is HMAC keyed. Withheld leaves are not stranger-proven. Two public chains currently disagree. This page is not a customer sale.
JSON shell: GET /receipt?format=json or Accept: application/json.
No fake payment. Wallets and funds stay with you. Keep this page.