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 0xb48969b796322d940d844ff12eb7efe168a63c7a6748aad6a2027cc09b719eda. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6c5ea7a-e05b-416b-b2b7-87a28998820d.json and https://artists.proofprofile.net/proofs/artist/f6c5ea7a-e05b-416b-b2b7-87a28998820d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dream-Like Background Music for Afternoon Relaxation
Tenor Sax Jazz - Background for Self Care
Smooth Ambiance for Afternoon Relaxation
Tremendous Jazz Piano - Background for Baking
Trumpet and Alto Saxophone (Music for Coffee Time)
Piano Jazz - Ambiance for Private Lounges
Music for Hotel Lounges - Thrilling Piano
Music for Unwinding Time - Trumpet and Alto Sax
(Trumpet and Alto Saxophone) Music for Mental Exercises
Backdrop for Recharging Routines - Dream-Like Trumpet and Alto Sax
Trumpet and Alto Saxophone - Music for Hotel Lunches
Vibrant Bebop - Background for Comfy Offices
Music for Fun Luncheons - Majestic Trumpet and Alto Sax
Music for Afternoon Tea Time - Simple Trumpet and Alto Sax
Mysterious Bebop - Background for Comfy Offices
Music for Comfy Offices - Mysterious Trumpet, Alto Sax and Tenor Sax
Sunny Background for Romantic Spring Vibes
Cheerful Jazz Trio - Background for Beach Holiday
Music for Literary Daydreams (Bossa Guitar Trio)
Cultivated Music for Moments of Winter - Jazz Organ and Guitar
Jazz Trio - Background for Peaceful Melodies
Lovely Jazz Trio - Background for Breezy Dreams
Music for Literary Daydreams - Peaceful Bossa Guitar Trio
Deluxe Bossa Guitar Trio - Ambiance for Peaceful Thursday
Jazz Organ - Background Music for Chill Monday Moments
より良いマグカップでコーヒーを淹れる
Lounge Cat Haven: Jazz Vibes for Peaceful Cat Moments