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 0x3924cfbe20c841174cf11580446c3c47027cdf1ad1b0e19894e79c046dc1ea23. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3434fda5-0ae3-4782-a73c-a5ebb57c8b2d.json and https://artists.proofprofile.net/proofs/artist/3434fda5-0ae3-4782-a73c-a5ebb57c8b2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stockholm (Original Motion Picture Soundtrack)
Helium (Original Motion Picture Soundtrack)
Tanzania Transit (Original Documentary Soundtrack)
Demi (Original Track from the film Hallali)
Buladó (Original Motion Picture Soundtrack)
The National History of Destruction (Original Documentary Soundtrack)
If She Is Not There (original documentary track)
Three Days of Fish | Drie Dagen Vis (Original Motion Picture Soundtrack)