1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa2d9684f70c247ad927109e900b7f7a5955fbc813a06be1b3dbfa4752606adcf. 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/e54415b1-5230-4598-89b5-180f4f974d75.json and https://artists.proofprofile.net/proofs/artist/e54415b1-5230-4598-89b5-180f4f974d75.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 → block OTSBitcoinBlock must exist at that height 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 0x85a36d7fb51aea69c0f852e90cf9fc6ee96575df06cb6abeaf5075d36cd53730. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US25T0891067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd272f5fb15de712f6097233381c1a24aedff79cf536a6f108d28c658fc9486ab. 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/US25T0891070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13fa7e282a9bb061171a642334a0b237099cd714e894807a75126dec37f3bd6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFMG1494393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc384380870cdb9089876cf70ce13c2ad0d1aa45a6c60be64abfc5d09cf2f28a. 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/QMFMG1494394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b5973d76a27d9a77eb23cf04946f2d8d4a745da615d5df18ede48f537e033f. 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/QMFMG1494395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8698954cef5b1725717769308c8f8d6bd1510612fbd4f6eefa8ca53f4da55ece. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFMG1494397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1b6b58df7707d7d559947b2a003651d2acfffe374dae932e17a185455268ad. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMFMG1494399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15209eab96d487c141fdbb34d5f91ce4b32d30b99fa3b41d05d0398ed9b61e5e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFMG1494402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec2e76b4deb696d9636d3a73b602c7ad7ac4287799efd6f40bce473754ba07d. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/QMFMG1494404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90ba31d2ecef85cd6262d8f14ceaf1ced74b168309280f1b8346a675f903d98. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7X70400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1be57a810ecbcf8b4dbe05477e6978b8f8f5fdd41e54d852e005153a845379. 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/US7X70400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d684d1f2440f9ad9476ce47b9c5f38314746b286b0995ef77c8867119d9581. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7X70400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a442c8d379f35d367c5e2857a2127c1171c271125246c76c153338cb1863c66. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7X71200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f3c48562e6ffdbbcffb8d379537bc75fb6d716ab5a2fafe3a64ba47934212d. 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/US7X71200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189e4aa87e31d824a2ff2b8c921a0541c23ea08d1919a86f386a742648d1023f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA25T0523711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfad82cce7957675e87a2d8cae9b140d2033943a4a8598b632ae712abaeba89. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7X71010075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc528e3de4da5121e24e30c53b00bde5c51e8b3453789784eca10708fc2c76cd7. 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/US7X71010083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e83582bdd05e991987e062ccaa1c8dc80492592c34b478bbf0c9a6fe6917bca. 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/CA25T0910003.