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 0xbfda0f47eadb68962e44349f30648be08f2cd805f46378ca5a346a5f83e014df. 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/74908df6-dae4-4d20-84ef-79e127c93405.json and https://artists.proofprofile.net/proofs/artist/74908df6-dae4-4d20-84ef-79e127c93405.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 0x5f812b561659076e01d051c228ac2c1a8dafcdcd66aa0b342271f59f35335951. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5BU2342845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeaba7d73eb4028ef646d2025df23c23fd936c1aee85643028573d68fd19810. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5BU2342847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731384204eacd681628a197d00a2912abb2d00e252ee773f9fdc5271c0737bdd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE5BU2346317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6990cf64370f65cd719da18b4011b70933596959e09335c17594dcb5f333cc98. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU2346320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac123bae4118f5e938ebcbf876fdc856b253d7196b9b7bbe4b4cd67e2277c28f. 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/SE5BU2338277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaef98fe3faef316aa6aa006337ed12c5e3d4dfee253f49f0390052073b45d71. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE5BU2338279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6367f467367f9cb5b7ed660dbbc7e04b75163c0beea22e0bb134222d8f8a9117. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:37Z), 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/SE5BU2338280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e6292edcb82846f770e6e9088c10d9b88b6d69e224aa6f21d8462f9e2c7329. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5BU2338285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0930dccaddfd6ac99144c37c6b0b333a5c1065b506292fb7fd10741b7b1d745f. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:49:48Z), 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/SE6XW2318286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf921f62990616570a7f562f8f04355f7d4978bc685829d4052f7af62145dd923. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6TI2346212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3b80d206b5f851f2461deec7562bd09a2debe0e790007cc7b0df9756f02b48. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6XY2306778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba9ccc6baf5c8bd542cda0aca384312675b9568e7c18def17bb67f0bc45ada5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6QE2397389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920a95cc644957f356670c07a65a6d019064adface2832de4d9b08dadeb52c82. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE66N2362362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329d344138ed835d423592cd65c4cc1e09ba73849de5114af6cc37edd9d89fd1. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/SE66N2372875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39e99ccccfe0eebbb91de68cccf6adadafaae6e93d16c95b3b29a6d64fe0ef1. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SE6XY2376308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70de8d7ee1e4020537049187d7820685ec41db45f3da641de638932c16f0cc0b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6XX2344080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5ad82e6aa36dc8ae03d681ece9076d8ab7121eda04cd6555febd762a1e4e10. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/SE6A92399607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2714ffde81e3522456c8400873ca1baaaae485bd70fb8cdf8d50e77b2ed63d99. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6XY2368991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb875345e10ec62e94db7216fa9ba2e151b8e774fb49a4d41c4ab9d54077d06a3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6I32459193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bd7db1a055316d5187cd643ded88a4fb10563f45975e99e77f6ad62d6bbe49. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6QE2430466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f672f1da8cb6bfc15eb3cb6caf574e3f5b83c42dd61650aadb188bb75922211. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/SE6QE2430467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bc100ea11fce26b562d6bf6dd85217ba866fd4d2153cdbc13d75598a6a709c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:54:31Z), 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/SE6QE2430472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14042f97b83e71f7a8d1ec361bc0afe48b034a0baa4a957ffe5302bf4819c22. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6QE2430474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31666af25d6c398a94c5a86729c01edcf5a5e721307d8845a7f75ac217469331. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:31:24Z), 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/SE5BU2583829.