
One API call turns any agent's action into a signed, on-chain, tamper-proof receipt — one that anyone can verify in seconds. No wallets, no tokens, no blockchain knowledge. Crypto stays invisible.
Get a free API key → See a live receipt ↗
Your agents now act on their own — they draft contracts, move money, file claims, make decisions. The moment one is questioned, "the AI did it" isn't proof. Screenshots can be faked. Logs can be edited. You need a record no one — not even you — can tamper with after the fact.
POST whatever your agent produced — JSON or text. One authenticated call.
Ed25519-signed, hashed, and written to multiple blockchains — a permanent, timestamped fingerprint.
A public link anyone can verify — customer, auditor, or court. Or verify via open API.
# one call → a verifiable receipt
curl -X POST https://proofrail.ripitlabs.com/api/proof \
-H "Authorization: Bearer <your-key>" \
-H "Content-Type: application/json" \
-d '{"payload": {"agent":"contract-review","verdict":"approved"}, "label":"NDA v3"}'
Anchored to 5 chains at once. You're never hostage to one network's politics, fees, or downtime.
You send JSON, you get a receipt. No wallets, no gas, no tokens for you or your users to touch.
A public receipt page + an open verify endpoint. Trust you can show, not just claim.
Every proof is a real on-chain transaction you can click through to the block explorer.
50,000 proofs / mo
Multi-chain: XDC + Hedera + XRP + Stellar
Everything in Free
Built for: AI agent platforms · AI SaaS that ships deliverables · compliance & audit trails for automated decisions · trade & insurance document proof · anyone who has to prove an autonomous system did the right thing.
Free key, no card. First proof in under 5 minutes.
Get your free API key → SDK Docs