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 0xa5ee944acec069ee5efb4964a142b5d1f9154a5b8a2241dca1a0fab8eddcd020. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddac6bf4-27b7-4569-a278-b91d64b25746.json and https://artists.proofprofile.net/proofs/artist/ddac6bf4-27b7-4569-a278-b91d64b25746.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grand PRIX OF EUROPE (Das Original-Hörspiel zum Kinofilm)
Super Grand Prix (Audio Play - Le livre audio du film)
Grand Prix of Europe (The English Audio Storyteller Based on the Movie)