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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27007d14d77841b1de4cde87a61238fb5449a7f4b0dc59debdba1786633d7eb8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7ec8caf-019e-4b79-b9f9-013c9fbbcb5d.json and https://artists.proofprofile.net/proofs/artist/e7ec8caf-019e-4b79-b9f9-013c9fbbcb5d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee673c246fffde65ecc2deac492e471395387460b1c83237a8a3883be5bd12b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US5940904085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58595cda750e93b409b04c872ae1f383ca8abce7c63ff75b19d6c7bea6db0779. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:44Z), 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/US5940904086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b6c914b431b137be85794e544efd726cdf5fad0bf683e8a244b67c68b7b419. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/US5940904087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81ecfc399aab740974880b71c56bc086e653b8c12a395eeba52431721796769. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US5940904092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd326e02df706379266eea2ca41cf0a75b8c44db0e868cba89da1c6a5ea473a. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/US5940904096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f1e6d271e602035b9104f340daddca8fd7b17600bf1bfaf9224eea171c20e1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US5940904097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dfa85ca807ff0062551f58a224be3b1c4527ebc88cd5bd274e2f37596bd5d1. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:58Z), 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/US5940904100.
States of Grace (Bande originale du film)
Short Term 12 (Destin Cretton's Original Motion Picture Soundtrack)
The Glass Castle (Original Soundtrack Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf26c174e4b8bb3bfb4e3bcecc2941ae9c31c85ceab48e8c9090703ae898998f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US5941407537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214b7b1c57f7dff005fe9539c2310e8d8e73ab5cf118cb6503e7add955dee199. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/US5941407540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801f80448cf1d3ce95264dd17f8003a53c94c122f188721edb2a767b3b06cafe. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:25:56Z), 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/US5941407544.
The Glass Castle (Original Motion Picture Soundtrack)
Just Mercy (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bbd6b92e18f2b94bd10490eb3db80c14590aa185ec8c1119c370bf5d6e0478. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USNLR1901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e14a71b1fd251040f7377b0915b88266e58e002ec10551c58636c607cc28e3. 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/USNLR1901041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445509fc636dff34e26c00b8180bc27a738b2fc9f7d6d4cb623a46e85d0ffd8c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USNLR1901042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124eb10460fca2726d4778e796c4aca08e8c1d48bb68107811845e542e9555bd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:23:32Z), 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/USNLR1901055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935489f8a06f4a607298d2c2802249a37624af6d445f45d13821c4bd4b7c4a1f. 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/USHM82024290.
Shang-Chi and the Legend of the Ten Rings (Original Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf94864ebf5a12448032472e5f9cb473c9027f6c965a0e13656043913971cbf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHR12142127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857d42c61aec4f055d01ccb06bca885135164c7a6a81a3e3e4f2f9eeacea23ae. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:50:40Z), 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/USHR12142128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2af4c339b96afc5ec1a4f9b949b801c6b7c660a3e7050714ac619053d63fc5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHR12142131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36489706e5d8cce7297beba2a7c6e7bf007a634e99af7d616f194593746555c7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:53:07Z), 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/USHR12142132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dfa9cd453ddad9f7719e4b94c0dfdd1f72e77a46a357cbc57768a1e0aec1fc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHR12142134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a834eaede3234b921c99f8387d7cdbe9f199160d9b24d4591f918fb8fcc73f5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHR12142136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349a751f0df28d4d8dad33db94e29851ae2063172896261460219861500f7422. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHR12142137.