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 0xc58f7e600eddc4624cb0157b9aca52f0ea9fdf05aeff81f6324f95533e8ee904. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f0542e7-dadb-40f1-afc6-f0e9ac2ea40f.json and https://artists.proofprofile.net/proofs/artist/5f0542e7-dadb-40f1-afc6-f0e9ac2ea40f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Argentina 1985 (Banda Sonora de la Película Original de Prime Video)
Cada Minuto Cuenta (Banda Sonora De La Serie Original De Prime Video)
Vieja Loca (Original Motion Picture Soundtrack)