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 0x0e611a201aec128490bc29b07f93da241ff8e57850dadb469db2400edcc4ce69. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d5bff0f-e52f-425d-a2bc-2778fbe1cda7.json and https://artists.proofprofile.net/proofs/artist/1d5bff0f-e52f-425d-a2bc-2778fbe1cda7.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 0xf48ccfa073c672d8b2f8cc2b73b7e6cd54ad97a38d0dc58734fa81e736c3b81b. 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/QMFME1588044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20c566da5da7b5090bd14d77801c31a115dff2f2fb01bf1d75922295febc115. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QMFME1588045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f4bf189e724b907e204d69b0986ea1363f108cec553f2dd7b17310d02244b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMFME1588046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b459543270fffb00ced776f911e260f324114ec6fe2209430de292b3bf92fa1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:15Z), 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/QMFME1588047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef90675e024b98fe55ae7b1d3d8b156fd340e23e0f51ce9f92212ccda8caf887. 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/QMFME1588049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a94ad89fbeeb085c7a948ebdfb2a24e957c73304e687c5fc0b6bc589a929fff. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QMFME1588050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bb73870a0d38b753f2f5c36996b2944ed321b1bbebe121e49886f4cdfbed22. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM6MZ1890310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0496222678ae77a7fe21e22446582f5d7e2ca78ea9bd5d4bcccf0f937e05505. 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/QZGLS1970914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc786ee1ba6cd929b155d67be0cb8d9dc670385690a7cd867f168341b787465c1. 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/QZGLS1970915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e94805ec8df483776ccef43310d30f494e58a7f432d49133da7962125a9abcc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS1970916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd17b77d249f48f58296cc0ac464747ca3783c5c7cc7f893da3342c7d5482f8a. 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/QZGLS1970917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c79ef94c4c404b65277c4547cb9aa43cd5e0e0fa2ecb0b857cd2299852dc1e7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLS1970918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f0601a7abd80a0afa173d0d511ab6c27d3d5f83bf88d3c108c9e32cc2a5506. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS1970919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863d045a1d1bc754fb3a04453ac250f75a75854accf55cf43f659ae01bc7bf6a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS1970920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1def2f9980c4ad1d051e4cbb631142dbef76755bd9b2d7fb9750e7bdd82fb2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS1970921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ec8953f70a08c39ddb2ff4a2ad7519fe306c98b13531bf25a950fedf664b6. 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/QZGLS1970922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f2e743ed21fe6accf80679a427c599b80a3ed2ee9aa06caa7b1b4463836b99. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS1970923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fc38968308b79b48a8971e6f4e151f58401b9ba99df933847baa2b96847f99. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS1970924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db79c008375c704607db5febbf490d7aada52c1d175a5b8385f8f8d96e3da7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS1970925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e15e2ff23c773d178a812fe3acf798a4dd41fff856450221d2372364184f03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS1970926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1def2f9980c4ad1d051e4cbb631142dbef76755bd9b2d7fb9750e7bdd82fb2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGLS1970921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aac504219a0ae41a7e50c0d592bb543fa882442fc5b617c1cc7dfc509e998d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ42027928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329abd5e52ba62f4a403a3aab1989d29bb955b4a8a7f4ce9ff75ec3162f1134b. 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/QZNJX2270162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d273552294211ccc2ef14d2e15c58cbc9e362fb57db6c0c08bbbe8c473e0a3. 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/QZNJX2270163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5567bda09431a178a685dba2c74235338574afbac7138f623bf13bd6451dbb8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJX2270164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd4465808003d4b505f8730f539673f0e4098f3420410b98c839cacabd269b5. 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/QZHZ51957787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040dfeea2246c66fb538467c0c84515822f41925c70454c7f799dbd605e0cf2d. 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/QZNJX2270165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ec692e6d9f64b2634cdfb27fe5e13e1d1b5dd01c353e06b5f77428fb4375b0. 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/QZNJW2080351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353cde3b35a2a83d1c8aceaa0ca4f7b4306e760ad1a61e1e74a6d09a0192cf23. 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/QZNJX2270166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41bd53119a59d3ad7e5767d144f287ae642a8119be05a1877ee781749d2a38f. 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/QZNJX2270167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd46ec58f9df0fe867333f601541117a66d34bfc2ab695ea929f436d965dfac6. 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/QZNJX2270168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91e37c8cad976022d1baa0c8cc61e28cefd236950f96a0214d9dfc45988a136. 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/QZNJX2270169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aacff3f6e4ef890a54da66054d6b4d3ef278f7f774a2bba0e258655f919b2a. 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/QZNJX2270170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fb6e77c6c636df1af587bb66ac97e23b6a94259b29551ea609fdfa4fb8cf4e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZW9K2422531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214e1d6f9971dbe36f6340a0d4f2b54ac8a0842751d9d9a58371543466542e73. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5AB1764164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446b152daa5b0d5b93cbf791cdceb5f9ab3d1855485e79bcde6b17e1b4c37af5. 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/QZ5AB1764165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fec60220ae02cf98d84adaac42133349da0b4cebb983f96afdce2a036145d7. 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/QZ5AB1764172.