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 0xc72d2e8341a36ab6d8a9bb6bf594ba0407687275ff6dcddde1f48a88e0cf206a. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd7c190c-7ef3-44f9-998a-1578c61ef2c2.json and https://artists.proofprofile.net/proofs/artist/fd7c190c-7ef3-44f9-998a-1578c61ef2c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spirited Jazz Piano - Background for Cooking
Music for Just Relaxing Monday - Swanky Harmonica Solo
Opulent Acoustic Smooth Jazz Guitar - Background for Coffee Relax Zones
ラフ・ライド・ドギー・チューン