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 0x325b23b87d89a45b71351b06bf2500e5abad58c246bf09f0d021a951123c0755. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa8c5be8-952b-49af-92d4-d6f9f1fc775c.json and https://artists.proofprofile.net/proofs/artist/fa8c5be8-952b-49af-92d4-d6f9f1fc775c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saxophone Jazz Classics for Background Easy Listening
Comfort Collection: Slow & Relaxing Jazz Piano Instrumentals
Fine Vintage Jazz Standards on the Trombone