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 0xa8de06d31964d07a3884d25ab8bbdf326ddd9277b11c1c4177c7c10acfe769e8. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb86bf4c-1d5f-4b6b-bd5f-4b223244528c.json and https://artists.proofprofile.net/proofs/artist/bb86bf4c-1d5f-4b6b-bd5f-4b223244528c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pedrouços Clandestino (Amor & Narcotráfico)