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 0x8d6e703bcbc815efcf8a0c3e8334148f0b3883bf580ea1e7c3e81ef9e6d10b19. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4efa69f2-3629-47f5-8fa0-8ed1eca970c8.json and https://artists.proofprofile.net/proofs/artist/4efa69f2-3629-47f5-8fa0-8ed1eca970c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Astonishing Tenor Sax Jazz - Ambiance for Dinner
Music for March Moods (Trumpet, Alto Sax and Tenor Sax)
Music for Channeling Positivity - Trumpet, Alto Sax and Tenor Sax
Backdrop for March Moments - Cheerful Trumpet, Alto Sax and Tenor Sax
Trumpet and Alto Saxophone (Music for Lazy Days)
Trumpet and Alto Saxophone - Music for Recharging Weekends
Music for Recharging Weekends - Serene Trumpet and Alto Sax
Trumpet and Alto Saxophone (Music for Hotel Dining)
Vintage Piano Jazz - Ambiance for Catering Parties
Festive Guitar Trio - Background for Private Daydreams
Guitar Trio - Ambiance for Private Daydreams
Jazz Organ - Background Music for Colorful Gambles
Jazz Violin - Background for Virtual Relaxation
Astounding Jazz Organ - Bgm for Colorful Gambles
Music for Random Studying - Bossa Guitar Trio
Remarkable Jazz Piano Duo - Background for Studying Legends
Spirited Jazz Piano Duo - Ambiance for Studying Legends
Sparkling Music for Private Access - Piano Duo
Bossa Nova Guitar (Music for Private Access)
Music for Random Studying - Alluring Bossa Guitar Trio
Wonderful Ambiance for Needful September
Unique Bossa Guitar Trio - Background for Timeless Tuesday
Jazz Organ and Bossa Guitar Trio - Music for Chill Monday Moments
Acoustic and Electric Bossanova Piano Duo - Background for Lazy Together
Jazz Sounds: Soft Coffee Shop Instrumental for Thoughtful Study
Productive Grooves: Work at the Jazz Coffee Shop
Jazz Concentra: Café Lounge Beats for Focus
ラグジュアリー・ホテル・ジャズ・プレイリスト