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 0x5bb61765c57a72489e636cd4d79fd365cffb959a054cd21a868c6bcbf3311ad3. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/219fd82f-bbd7-486a-8761-9633639663ff.json and https://artists.proofprofile.net/proofs/artist/219fd82f-bbd7-486a-8761-9633639663ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bossa Saxophone - Background for Holidays
Music for Relaxing (Electric Piano and Alto Saxophone)
Retro Solo Jazz Piano - Bgm for Breakfast
Solo Jazz Piano - Background Music for Dinner Time
Tremendous Jazz Piano - Background for Dinner Time
Christmas 2020, God Rest You Merry, Gentlemen
Christmas 2020; It Came Upon a Midnight Clear
Music for Dining Out - Trumpet and Soprano Sax
Jazz Trio - Background for Dinner at Home
Music for Eating - Vivacious Trumpet and Alto Sax
Smart Smooth Jazz - Ambiance for Dining Out
Fashionable Music for Family Dinner - Trumpet and Soprano Sax
Trumpet and Alto Saxophone - Music for Eating
Debonair Music for Meals - Trumpet and Soprano Sax
Music for Wellness - Trumpet and Alto Sax
Tremendous Music for Bar Time - Trumpet and Alto Sax
(Trumpet and Alto Saxophone) Music for After Work
Jazz Trio - Background for Happy Hour with Friends
Music for After Work - Trumpet and Alto Sax
Wondrous Jazz Trio - Background for Coffee Tasting
Backdrop for Tropical Outros - Jazz Quintet
Music for Tropical Outros - Jazz Quintet
Distinguished Jazz Trio - Background for Invisible Mornings
Music for My Quiet Dreams (Jazz Organ and Guitar)
Backdrop for Always Reality - Jazz Organ and Guitar
Swanky Music for Mystical Monday - Bossa Guitar Trio with Jazz Organ
Bossa Guitar Trio - Ambiance for Acoustic Messages
Music for Fun Rhythm (Bossa Guitar Trio with Jazz Organ)
Sesión de estudio de jazz para concentrarse mejor
Jazz Sounds: Morning Focus with Coffee Shop Tunes
Meow Melodies: Jazz Lounge Harmonies for Cats
スムーズなグルーヴミュージック
Jazz Reverie: Notes from the Coffee Lounge
Serenity in Jazz: Café Lounge Relaxations
Conjunto De Perros De Jazz De Piano: Armonía Melódica Resonante
Paisaje Onírico Jazz: Entorno Relajado En El Café Lounge
Delicia Jazz: Melodías Del Café Lounge Espresso
Serenatas Armónicas Para Mascotas: Conexiones Melódicas Del Jazz y Del Piano
Café Cerca De Las Corrientes: Vibras De Java
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xf85bcc5c2c132d97324092842ba1461b0cb87e601f14ee6af7464935f9b66a2e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2374603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea8f7e6ad179ab33589081609147c3213ecf28bf9a0ca2343a8fe4e6babfdaf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2374611.
Exploraciones De Música Jazz: Senderos Rítmicos
Suaves Melodías De Jazz Para Relajación Nocturnas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334500912458afaac5b981e27d256a50c531ba83a3fec54d158440172a97dde2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2471816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4bdba84ed104143abe92da32146a5a2a6edbbec1ec0a53054f49a73fcb066e. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPS84459161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f092fb70601cae925e3429096bbd36e40a93967f4664bb8c0da7029345c677. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPS85049112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3738098ea1aa4cf1ac6174676b28ca0f61acdd7ab1a10c72a660de9718f2c2b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPS84861990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe722c2497bf777152a073f140e7c302987416190d5ca27dbe8ad48e9367d4872. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVU52507817.