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 0x9874938b0d6b6e5bc6f2477e74b5fc06ccdbe689a376b35a3fd867ac71ee35ae. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0283b7f5-9f28-4e89-97fe-6a68d528462c.json and https://artists.proofprofile.net/proofs/artist/0283b7f5-9f28-4e89-97fe-6a68d528462c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Unseen (Original Motion Picture Soundtrack)