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 0xe9336b7535ac79e33072b167aeed7a37be7728b5fb2911bd9d1c691c48ddf8d2. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ecc1ce1-315d-49a4-a85e-a05ec7a7bbca.json and https://artists.proofprofile.net/proofs/artist/1ecc1ce1-315d-49a4-a85e-a05ec7a7bbca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Double Bass Solo - Music for Study Sessions
Jazz Duo - Background for Staying Focused
Incredible Jazz Piano - Ambiance for WFH
Mind-blowing Quintet Jazz - Bgm for Ordering Takeout
(Trombone Solo) Music for Familly Dinner Parties
Backdrop for Recharging Moods - Trumpet and Alto Sax
Music for Chill Afternoons (Trumpet and Alto Sax)
Energetic Background Music for Searching for Creativity
Fun Jazz Trio - Background for Classy Lounges
Jazz Trio - Background for Classy Lounges
Exciting Jazz Trio - Background for Cocktail Nights
Exquisite Ambiance for Fashionable Eateries
Sprightly Background for Top Restaurants
Magnificent Backdrop for Spring Vacation
Spirited Jazz Guitar - Background for Fresh Gourmet
Soulful Latin Big Band - Background for Seasonal Stories
Music for Energetic Feelings - Superlative Jazz Guitar Solo
Lovely Music for More Feelings - Jazz Guitar Solo
Quartet Jazz - Background for Perfect Seasons
Festive Quartet Jazz - Background for Perfect Seasons
Music for Spring Bliss - Soprano Sax Solo
Understated Jazz Violin - Ambiance for Laid Back Overtones
Music for Reading Mode - Groovy Harmonica Solo
Subtle Jazz Violin - Ambiance for Virtual Relaxation
Dashing Music for First Curiosity - Harmonica Solo
Joyful Jazz Violin - Background for Virtual Relaxation
Bossa Guitar Trio - Background for Peaceful Thursday
Music for Lazy Together - Acoustic and Electric Piano Duo
Superlative Background Music for Chilly Afternoon
Jazz Sounds: Peaceful Coffee Shop Melody for Dog Cafe
Lounge Whiskers: Relaxing Coffee Shop Jazz Tunes for Cats
くつろいだ犬のためのくつろぎのジャズ
Jazz Music Mysteries: Uncharted Territories Chord