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 0x4327deb0440a963adc2a6e5a7653d7c85a58574229b75474a79f5aed372c3942. 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/a6eacf71-8f5b-453e-9d8d-23a1398f15a9.json and https://artists.proofprofile.net/proofs/artist/a6eacf71-8f5b-453e-9d8d-23a1398f15a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1524674dfd26ab7c512c0f2d21f3e15b4aa3d0494b06e09797b34f39a6c0f837. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZZ8A2328019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d73f89b2d76b6188caec7306cf11dc0678e19a2743a2390ec796a25e0bda0f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZZ8A2328021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df28caea635e87df700cc21d243e9f184ec198ec8af4c9865244a6dfdc4f393. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWV32330272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c99669be2772f25530ac59a4f84446fb9035c86e3c3a43359fa1bb261db4019. 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/QZWV32330273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b687f5e6dc88456ad319e6e54ed5b7ae3580ea6279f1216a4b4fceeb406d3a0. 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/QZWV32330274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a35018adbc729d2e33609b123e4f92315d97b9f589d18990a5694da6e77c35f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2398522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b642196cc0766dc85492c2b3adb7c538246e67a0f28f739027fdcfb7fd8c8a8. 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/QZWDE2398523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42377b4f39694776916378377f993e9bdd1b96dab5eb9cfe6a9729399305788. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2398525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cb51b4819722e3b49005269e6775a8447f8793b0e7e275056c6f313cccad4f. 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/QZWDD2308784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfd0969eaee08a8a804a89e2d492708ae460408c77f830d91da584b74741138. 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/QZWDD2308785.
Jazz Piano's Night Lullaby: Soothing Tunes for Baby Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cdb8d147dca957958bde12e1bdadf92a47c0915b96341b86050ea51e932763. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLLT1606716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88f6dd5687d5fd9e3a404ae97ede2a0dcd71f21ec589590419e9cc48de0bc3d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLLT1606609.
Easy Listening Music for Finding Your Roots
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4749ac38b70e91c18123274d476334b3e5b2928d37b9e94408e99c10dcb53f4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBLLT1606621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f71c741615b53ca24e53a4de0f9952cf5633463b229694eee9de757b3beab7. 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/GBLLT1606627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ef74675204649a252d389c4f457cb173f2affca635b145adbb1bf220e54c1f. 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/GBWUL2408402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beddbd588accb8e6799e0878469a67c4813f08c1b83706ac1bcba0050b3a11b. 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/GBWUL2408404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2cf78d6a46b84715f41ef0f011b02d62e8c3cc11fe692119eb3c64bcb4b4eb. 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/GBRKQ2410134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8436875c0efd21e255c18f86722d40b6d1c83976b7ad12b510153582b9a9f86f. 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/QZWDE2389136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc2d7bd6b69e21734036219a710106968f25ee580830d99b4a397aeccf75106. 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/GX53U2412344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9a7bcafd2754b2b75973fd0df9a9629c34b289c513f806244f9ec4bdfbadb6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZZ8A2414021.