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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82d284c1a9a00c002a921e1c0c74a6fd0e6ce84928b6168ff39d4f1bb67cf26. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6a32c29-a11b-47ab-9c06-b0df5faf122b.json and https://artists.proofprofile.net/proofs/artist/c6a32c29-a11b-47ab-9c06-b0df5faf122b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Eterno Rumo Dourado: Canção Celeste na Campina Dourada