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 0xf6bd5bd509fb49742748c01afba6adc7857f3d9a50ee92090d32525ea12b3441. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/378d1739-a64a-44c1-af06-0d37333abf8a.json and https://artists.proofprofile.net/proofs/artist/378d1739-a64a-44c1-af06-0d37333abf8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Backdrop for Coffeeshops - Jazz Manouche
Ambiance - Distanciation Sociale Émotionnelle
Piano Jazz - Background Music for Work from Home
Divine Jazz Piano - Background for Work from Home
Breathtaking Background for Family Dinner
Backdrop for Breakfast Time - Trumpet and Alto Sax
Carefree Jazz Trio - Background for Eating
Music for Stress Relief - Trumpet and Alto Sax
Atmospheric Jazz Trio - Background for Staying Fresh
Music for Daily Unwinding - Fun Trumpet and Alto Sax
Jazz Trio - Ambiance for Mental Exercises
Trumpet and Alto Saxophone (Music for Jet Lag)
Music for Great Meals (Trumpet and Alto Sax)
Calm Background for Cooling Off in Silence
Jazz Organ and Guitar Solo (Music for No Stress Summer)
Spirited Background Music for Reclining Times
Happening Music for Reclining Times - Latin Piano Jazz
Jazz Trio - Ambiance for Invisible Mornings
Music for Entertaining Loads - Dashing Jazz Organ and Guitar
Backdrop for Tension Relief - Simplistic Bossa Guitar Trio with Jazz Organ
Music for Striking Momentum (Soprano Sax Solo)