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 0xd5a8a7dd49d10d52b5461536c4ad3f17dda34b857b171d19b39db7e91328ff76. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6db91ca0-4334-4261-bd7f-29fd1a38df37.json and https://artists.proofprofile.net/proofs/artist/6db91ca0-4334-4261-bd7f-29fd1a38df37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Familly Dinner Parties - Trumpet Solo
Music for After Dinner Coffee - Trumpet Solo
Spacious Clarinet Solo - Ambiance for Friday Night Dinner
Jazz Guitar Solo - Background Music for Skybars
Big Band with Tenor Sax - Background Music for Recharging Spring Holidays
Music for Inspiring Ideas (No Drums Jazz)
Trumpet Solo - Ambiance for Simple Reflections
Artistic Jazz Violin - Background for Cafes and Classics
Music for Sunday Evening Cafe - Jazz Quintet
Spirited Jazz Piano Duo - Ambiance for Fresh Vibes
Acoustic and Electric Piano Jazz Duo - Background Music for Sweater Weather
Lofi Times: Cool Lofi Beats For A Coffee Store
Guitar Bossa Nova - Music for October Heaven
Inspired Trumpet Bossa - Ambiance for Sweaters and Coffee
Piano Bossanova Duo (Music for Comforting Reflections)
Background Music for Chill Out Reflections
もし私たちがその時のことを考えていれば
勉強に集中するための心落ち着く調べ
Jazz for Dogs: Hounds and Harmony of Piano
Calming Jazz Piano for Mindful Concentration
Tranquil Jazz Reverie: Lounge Melodies for Coffee Shop Relaxation
Jazz Whiskers & Purrfect Tunes: Coffee Lounge Serenades for Feline Friends
Feline Jazz Elegance: Lounge Serenades for Whiskers
リラクシング・ラフ・イン・ザ・ハウス