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 0x2eedbdc2738b24f095d7f3ed60b7ffb06032265313085784e50807aa1979c44d. 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/1f592c3c-55be-4e5b-b0e4-4def75997b1b.json and https://artists.proofprofile.net/proofs/artist/1f592c3c-55be-4e5b-b0e4-4def75997b1b.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 0x6b7002eed50cd67bea783047a920dc7805d424b27b012fe34d57e28536cea649. 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/USDM32021302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900497a6704b0437c0068b8576f623026485efe300fe814f841424e5a6ab1530. 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/QZUCN2201400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258c5ee5e216f10cec62cc6d72285705d517d553f23fb4d7e539300bfdb6e057. 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/TCAGJ2262231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9f5b5dedb8e06f17c05c2587e728cb3aa67402da4637b49f7146e93f7f4076. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFT2199230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a668968347576e780a29c07aeb2277175c53b3444fc9b0f33a626743e66e584. 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/TCAHZ2452795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084105f39f2dd33e59a57bb249f73026a2aec0bb3a89bd519b0e4a2ad41481df. 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/TCAHN2316340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a64c8f9cc16f9cc3c666cef2649caf79abe0f685e9033de81b9aa8bf1d0808. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAHI2363454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a64c8f9cc16f9cc3c666cef2649caf79abe0f685e9033de81b9aa8bf1d0808. 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/TCAHI2363454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3270f4fe01ebd112f9c94e6ac91a585a8a6bdd090354de6e32800850d0fd17. 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/USLQ22180552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc99ccfc968971340a8752c81aee132439ac169ff44ee18267395d2db02584b1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGW2320050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ef1a88b9433f025ed34291a1f17416a114d37a77468ecb48454e92b6e9b65c. 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/TCAGO2232465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab92fee53d5a859f8027e04d45e53b1c26f4359563a557531d7fa3d127296f4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFZ2273313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbfa761a018ee7e0541da114b6d3cce53b97bc1cbcb06cd6e9be9c89ae6fb9b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFL2162703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d0f6528137a82e04069ba22082d2a009023024ad186ac15e4ed227a4eebf3f. 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/TCAFE2027545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf129ebd3f0182bc65c1f8da75227ed86770685cce31014884d11673a95772276. 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/TCAEZ2061443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee5aba8848ba1f82365b7c50b140a3a8beff4ddbcf7b9c8c71aebe50afb4d68. 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/NL1ZN2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b70ba59adfaa074af9e649991e5a51fb46ab8d8f46e4deee438aba658bb1433. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLM5S1900704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c3f9dabf14773baabba5a4c96ac032611dec3e04c3a13dbbc5fd1d238c0d5d. 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/NLM5S1900706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431b87df05733de6a87ee6385b1a3daff437f29ab7f62e0db47661b82950d76e. 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/USLQ21980159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119e828db1d2660143152183610164786ec203fe5d9af781d23d8a97c56ecdae. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLM5S1900638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcbb98f0fd3fff5da480a15611c3c85324cc860a84fa45951e84af60d8abcb5. 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/TCADZ1835194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7112faa7e097514ff3f22107bdd9a6687de3852074235cb70bf12ecf9ffc1a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAIO2479030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420720255a6ecdea6a67a40c6e559af8cf82841ed449ed5f9a221e0e3f0ce3a1. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCAII2438913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a668968347576e780a29c07aeb2277175c53b3444fc9b0f33a626743e66e584. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAHZ2452795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084105f39f2dd33e59a57bb249f73026a2aec0bb3a89bd519b0e4a2ad41481df. 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/TCAHN2316340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aa271bed488fae4d3aedab6f71c7a6255c59da67091be2e581f8741b8c988f. 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/TCAHJ2311483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc99ccfc968971340a8752c81aee132439ac169ff44ee18267395d2db02584b1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGW2320050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ef1a88b9433f025ed34291a1f17416a114d37a77468ecb48454e92b6e9b65c. 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/TCAGO2232465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258c5ee5e216f10cec62cc6d72285705d517d553f23fb4d7e539300bfdb6e057. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGJ2262231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1b76f35357821a772845e6739cbd5917064f711e02640c9e86a06a16c4d597. 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/TCAGI2233315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408f0fdf1c63c85df8dff624f191165c30aef00c2f4a24f847d452aeb5b619fc. 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/TCAGG2222601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ae16c0d5b1d9a9f566c2ffcb404cf0c9ba1df8ac2b1cf12fc368ecc950063. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAGF2213957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab92fee53d5a859f8027e04d45e53b1c26f4359563a557531d7fa3d127296f4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCAFZ2273313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9f5b5dedb8e06f17c05c2587e728cb3aa67402da4637b49f7146e93f7f4076. 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/TCAFT2199230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780633bdcea51f3761b0b136271d2354e5737bc1d5da2dc3a7273b7177f0795d. 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/TCAFT2160044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbfa761a018ee7e0541da114b6d3cce53b97bc1cbcb06cd6e9be9c89ae6fb9b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFL2162703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d0f6528137a82e04069ba22082d2a009023024ad186ac15e4ed227a4eebf3f. 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/TCAFE2027545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf129ebd3f0182bc65c1f8da75227ed86770685cce31014884d11673a95772276. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEZ2061443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c7df65cc92e4f5466badef340fdf13d25a80e395222b45cbd78868f7de17a2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USDM32026603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3757e07ac139cff10329877935530cc6d2ced42c47da03d2354fcde739322e8a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFPL1900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6006428dfa13cc237eb0f3c3ea6de3bae7e79290ebff6cc03519450060c86a. 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/QMFMF2360859.