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 0xa1a691bc51ee5fb16f9f96825706ee7cc692c00c0bbedf8bac281c7acaca7645. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12063b36-ca1f-4fc8-868b-d688424a053f.json and https://artists.proofprofile.net/proofs/artist/12063b36-ca1f-4fc8-868b-d688424a053f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Endjährig (Original Motion Picture Soundtrack)
Fatjona (Original Motion Picture Soundtrack)
Because We Dreamt of Flying (Original Motion Picture Soundtrack)
A Thin Line (Original Series Soundtrack)