1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb815683d5f5a61a18e66cc6370efadcb9612a75008c1d694390c12a54186e8c5. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38c1440e-6a50-4c33-bfcc-69509c8552be.json and https://artists.proofprofile.net/proofs/artist/38c1440e-6a50-4c33-bfcc-69509c8552be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ene kantu ferde ta urdinak (Musiques basques d'aujourd'hui)
Tira corda - Chant des musiciens errants
Gaztetasunak bainerabila - Ma jeunesse m'importe...