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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05e60abab0e45d1353b05d2fd2cac661be8fda3bd934f63f5cf3b517c1bd79c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c6fad76-e3fe-4d5d-ab41-d57fbfaf7ff3.json and https://artists.proofprofile.net/proofs/artist/7c6fad76-e3fe-4d5d-ab41-d57fbfaf7ff3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cultured Bebop - Background for Busy Work Days
Carefree Bebop - Background for Working from the Office
Modern Piano Jazz - Ambiance for Cozy with Coffee
Excellent Music for Moody Blues - Soprano Sax Solo
Music for Turning Heads - Delightful Soprano Sax Solo
Incredible Jazz Violin - Ambiance for Chilled June Nights
Soprano Sax Solo (Music for Calming Environments)
Mindfulness: Healing Binaural Sounds To Fully Relax
Astonishing Bossa Nova Piano Duo - Bgm for Chilled Minutes
どこかでひとりぼっちで過ごす時のジャズトラックと雨
Jazz Sounds: Concentrate with Coffee Shop Music
Jazz Serenade: Soothing Harmonies for Relaxation
Jazz Whiskers & Lounge Purrs: Melodies for Cats