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 0x7f8c9b799a4b9829e2f453036c0a4278d42d227cf8c8e92f3e9bf26e875df724. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89e50703-6778-4e48-b452-7e111e102439.json and https://artists.proofprofile.net/proofs/artist/89e50703-6778-4e48-b452-7e111e102439.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Happy Tenor Sax Jazz - Ambiance for Coffee Dates
Tenor Sax and Trumpet Solos - Music for First Dates
Mellow Tenor Sax Jazz - Ambiance for First Dates
Tenor Sax Jazz - Ambiance for Dinner Time
(Tenor Sax and Trumpet Solos) Music for First Dates
Study Music: Calming Sounds for Studying
Relaxing Bartione Sax solo - Ambiance for Deep Work
Easy Listening Guitar - Background Music for Reading at Home
Phenomenal Background Music for Long Study Sessions
Wondrous Jazz Trio - Ambiance for Final Exams
Successful Jazz Trio - Background for Long Study Sessions
Easy Listening Guitar - Background Music for Rainy Evenings
Backdrop for Staying Focused - Vivacious Trumpet and Alto Sax
Boost Your Night Sleep Meditation Music Vol. 1
Sleep Ambience: Comfy Bed with Kitty Vol. 1
Relaxing Flute Music for Studying Vol. 1
Massage: Relaxing Rain Melodies for Healing Therapy Vol. 2
Study: Binaural Beats for Complex Thinking Vol. 1
Study: Sleeping Remedy with Rain Sound Vol. 1
Sleep: Relaxing Sounds from the Fireplace Vol. 2
STUDY: Exercise Your Brain with BINAURAL Beats Vol. 1
Get Inspired! - Music To Stimulate Imagination, Creativity, Innovation, Ingenuity
Coffee Jazz Study: Inspirational Music for Learning
Intense Studying: Instrumental Study Jazz Sessions, Background Music for Concentration and Focus
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 0xc59f1a56f9189298c7eee287ff1085d56a023c9e2d7d3caeb4d7b76d8725c416. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/UKR4Q1976425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40059e1acd6323a12bddb1469b29a182f621d259e8fdc31a582f46a4b8a4af93. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKR4Q1976427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a998567c61024aa7f2f2c5a3949b9f58cabdd05db66162356439ab1aaf897e4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKR4Q1976428.