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 0xfec337275b7f44c972dd82e429273a827523a365d2ce26b38f213516bf607766. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a198daa-4aed-4df3-9e00-b4bda5392bf5.json and https://artists.proofprofile.net/proofs/artist/8a198daa-4aed-4df3-9e00-b4bda5392bf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Intimate Jazz Club Style Saxophone Songs for Cozy Easy Listening at Home
Midnight Blues: Evening Jazz Vibes on the Saxophone
Classic Jazz Standards: the Saxophone Edition