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 0x71bf5d13c989711bc7f54f70d603bb614a2c08747432750c031f9014b0b899cb. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0029967-518c-4f57-93af-fb25ed3a213f.json and https://artists.proofprofile.net/proofs/artist/b0029967-518c-4f57-93af-fb25ed3a213f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Calming Work Days - Trumpet and Alto Sax
Backdrop for Recharging Moods - Sultry Trumpet and Alto Sax
Music for Recharging Moods - Trumpet and Alto Sax
(Trumpet and Alto Saxophone) Music for Steak Dinner
Jazz Guitar Solo - Bgm for Unique Thoughts
Trumpet Solo - Background for Unique Thoughts
Astounding Quartet Jazz - Background for Comforting Cacophony
Energetic Background for Comforting Cacophony
Quartet Jazz - Ambiance for Comforting Cacophony
Quartet Jazz - Background Music for Crazy Night
Deluxe Background for Chilled June Nights
Jazz Organ - Bgm for Stress Fee Realities
Jazz Organ - Background Music for Classic Verses
Glorious Guitar Trio - Ambiance for Random Studying
Fashionable Ambiance for Relaxing Feelings
Bossa Nova Guitar - Music for Relaxing Feelings
Music for Connected Flashbacks - Piano Duo
Refined Piano Bossa Duo - Background for Sleeping Darkness
Backdrop for Comforting Reflections - Piano Bossa Nova Duo
Piano Bossanova Duo (Music for Amusing Earth)
午後の学習に最適な心落ち着くトラック
Jazz Sounds: Study Groove to Instrumental Coffee Lounge
Feline Jazz Serenades: Coffee Lounge Grooves
Street Beat Symphony: Dynamic Jazz Music
Chromatic Narratives: Colorful Jazz Piano