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 0x5680b9e97d9741cf0e94985d90406d4f2f4ebdc987a61798fabe635eed9a032e. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5218dff-af1d-4668-8346-df594123f6a3.json and https://artists.proofprofile.net/proofs/artist/e5218dff-af1d-4668-8346-df594123f6a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tenor Sax Jazz - Ambiance for Work from Home
Tenor Sax and Trumpet Solos - Music for Offices
Backdrop for Co Working Spaces - Trumpet Jazz
Calm Big Band - Ambiance for Work from Home
Contemporary Music for Breakfast - Piano
Dream Like Jazz Piano - Background for Cooking
Music for Dinner Time - Mind-blowing Piano
Christmas Dinner - It Came Upon a Midnight Clear
(Tenor Sax and Trumpet Solos) Music for Tea Time
Music for Coffee Time - Sophisticated Trumpet and Alto Sax
Playful Music for Eating - Trumpet and Alto Sax
Pulsating Music for Dinner Time - Trumpet and Soprano Sax
Music for Dinner at Home - Beautiful Trumpet and Alto Sax
(Trumpet and Alto Saxophone) Music for Evenings
Grand Brazilian Jazz - Background for Classy Restaurants
Unique Bari Sax Jazz - Bgm for Jazzy Cafes
Grand Background Music for Virtual Meanings
Mind-blowing Tenor Sax Jazz - Ambiance for Time Boosters
Music for Reclining Times - Wondrous Latin Piano Jazz
Music for Autumn Vibing - Thrilling Trumpet and Alto Sax
Latin Piano Music - Music for Acoustic Together
Smooth Jazz Guitar - Background Music for Atmospheric Power
Backdrop for My Quiet Dreams - Stylish Jazz Organ and Guitar
Music for Mind Focus - Vivacious Harmonica Solo
Smooth Jazz Guitar - Background Music for Gold Collection
Happening Acoustic and Electric Piano Jazz Duo - Bgm for Sitting Back Jazz
Smoky Jazz Organ - Bgm for Creative Spirits
Music for Repeating Anthems - Bossa Guitar Trio with Jazz Organ
Jazz Organ and Bossa Guitar Trio (Music for Moments of Rhythm)
Entertaining Bossa Guitar Trio - Ambiance for Acoustic Messages
Modern Jazz Piano Classics: Cool Instrumental Background Music for Work
Study Lounge: Relaxing Jazz for Concentrated Learning
Jazz Lullaby Whispers: Café Lounge Serenity
Harmonic Focus Infusion: Jazzed Piano Momentum
パウジティブリー・ミュージカル・ドギー・チューン
Jazz Tranquility: Soft Tunes for Evening Peace