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 0xca043f0eb2aaf3d4302cc99217bc63c5097ef39bf79dc1478e250fe2024a566d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8162ab0a-c9d1-4e33-8e23-ae5ec0cb2430.json and https://artists.proofprofile.net/proofs/artist/8162ab0a-c9d1-4e33-8e23-ae5ec0cb2430.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Relaxing Starbucks Inspired Coffee Music - Coffee Shop Music, Cafe Jazz Music
Positive JAZZ - Morning Music To Start The Day
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 0xf89a6433b98343a7aa5f1b90999a8d6387f1e1894350f7e18697c4246a008154. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZ7782100931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7bd9e53da8e59d1b7e84d4c16c5484b9ec5ac76e53512aa52fb9052683fbad. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FR59R2123470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb73cb6b522e8e9ba24e760746d68dbf544a5e9eee1c70c20874a98f8f7e861. 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/FR59R2123410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7ef9d144e5e66fe0537fd0f733169cb6bb7851d48e2c5be97198652a1cbd9e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZ7782100933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e60d2bca3d719c593da9a2e2ecd67fa783405e82839633b6d8391989f92ac8a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZ7782100935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c9011e230be43a0242f800031c1b34bd4784fbcc8e1500d0f24f96a0408715. 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/FR59R2123474.
Positive Mood JAZZ - Sunny Jazz Cafe and Bossa Nova Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941fc1a5db4d68ffe5a869c2bed33ca06cf00029c0e2211e4d1ae176c436d4ce. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:06:07Z), 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/FR59R2123389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e92956beaaac2c8f4023d4c1ec3203b56f9cc0c5738c1494cf7b977a23162a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR59R2123416.
Jazz Music - Relaxing Cafe Music - Background Music For Study, Work
Happy Morning Cafe Music - Relaxing Jazz & Bossa Nova Music For Work, Study, Wake up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cfedb43e0d107a333c41f78064f8108a63d9877af0e53496ab045431031c92. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR59R2123383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aaebf28a3d89d31ad31a5863137e51c58a2e009fe9a09033c39b98345e977d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:06:29Z), 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/FR59R2123399.
Afternoon Lounge Jazz - Relaxing Jazz Music for Work, Study
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48976594edd1d1b9373a10406239c80c6a0423f2563b0cb651c5ce81f19b51fd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R2123390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2589e26634b1dc1c1fb819a2b1276e0d7aaf5823eb4c581a21c13897c570db. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ7782100598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c5f06fc1a8280f6a59ed8ee51e8ea4a7eb230c574eddbc7ae7ab7d383126ab. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZ7782100502.
Sweet Morning Coffee Jazz - Relax Jazz Coffee Time and Bossa Nova Music for Happy Mood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437ceadd5fa068b196b63820865f96a4253bd139bf03acc8edd0ac8cf2ac7c60. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZ7782101107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0180ffca3fe517c3e529205b3609cd8add055bbff102ff4fe1b694a73fd447. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FR59R2123488.
Morning Coffee Jazz & Bossa Nova - Smooth Elevator Music
Morning Coffee Music - Relaxing Jazz & Bossa Cafe Music - Breakfast Jazz Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e8b161c5477359e1199d39f4bbfa491291805674dabc069b347430b08e2da3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR59R2123397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35acc36b5c02cfca4949aa9dc1145cff7b8bb85414a711d8d5efee9fbddbc93. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:27:46Z), 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/FR59R2123412.
Cafe Music Bgm - Relaxing Morning Jazz Music For Studying, Stress Relief & Meditation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5340fc3db603d2d2759827e60594d52d840202acaec4a776afd81057bb4d71ba. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:09:32Z), 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/FR59R2123493.
Cafe Music!!Jazz & Bossa Nova instrumental Music!!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f4647ae998469a0e4d60c61488ff18c1a5fe096ed1d7736492aad117d86608. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ7782101105.
Morning Jazz - Relaxing Jazz & Bossa Nova Music - Instrumental Cafe Music For Relax, Study
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f959089caf65f939e00394d23e03f6bd6eb28301de1a017655a52b37f8c099. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZ7782101049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539475fb0bd9b878af4230e89e03fa91a4e253255c2a12f705aa01b453cd67c1. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZ7782101056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32100cd7da3beb9ebdda264f81062dae86db54e0b6c68e6426210d3c0ed6910d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZ7782101061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe842d124c86ca4b70cbfa0fb3352b4716e6ff8c0e7d5d24f52a801fe4d5b9ba3. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZAKB2443371.