O Rebu (Literally English: The Fuss, International Title: The Party) is a Brazilian late night telenovela written by George Moura and Sérgio Goldenberg (based on Bráulio Pedroso's original story) and
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3588910418d87f0bb433532c1e5442e8e3c467e73dcea693ef64e7538c8157bb. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2aa12b5-141d-491f-bb30-caa8b2a8e97a.json and https://artists.proofprofile.net/proofs/artist/e2aa12b5-141d-491f-bb30-caa8b2a8e97a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.