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 0xb65ad7944fb03ad3e6394098516c2b3fdd88d1c2f4bf302890e0cd7ef8d28973. 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/9b49d2fc-45c1-4634-9b02-b994a9926ddb.json and https://artists.proofprofile.net/proofs/artist/9b49d2fc-45c1-4634-9b02-b994a9926ddb.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 0x92ce578391042cb5c7d2eb4b8e03aa4d2b49b5c459515bf31a7795e24052b431. 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/TCACY1706780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f29ed396c6b0ad8eb4e6f3c71f8bae126c0d001643d37491b11cfe8d64ade5. 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/QM6N21907594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d447e0d76de96eec7e7153606dfd3bf7a21873fd66e707b121a6761b50f218. 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/QM6N21907596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc16a91834c664db96b013f0155651cc72ac184b551513086bf9e8bc85c20234. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6N21907623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cddb3faa7c0617c2ac87389b83ff89a2bdb054a3a408e0256d03df1883dd473. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6N21907625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e1bef4fe1b591b8bafbae0e3be441eadca6a67bf18bfaff4e4c25e0f0f6d85. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:57Z), 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/QM6N21907619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa023e6e9291a1b193e8bd776919bade33119fb2efd2fe45c22b3fc2a67682463. 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/QM6N21907628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e2356c6093bf25dba4653f5d811c435c691b80d8a6a55ec682145f8d83c0e5. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:30Z), 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/QM6N21907631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555155fcfb730c3844a9f507bf26b862d511d013c802abea1fd42adb5bbd8a12. 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/QMFME1997070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3020d73a4a9eba4c1cecda2f1c46b23f0b87a0d0f8934d703c1e9338e6994bb0. 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/QM6P42096079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d898daf967f64ffd59fa4918976090c2ba52141e37741295512819941fe0e93. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:31:10Z), 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/QMBZ92004027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65307bbe9bdad55907c60af541e990841461300774a48ccec09a5ea2cefa56d3. 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/QM4TW2138044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89561951b87d4e031230982a2094e019e28c782f8482c3fbbeca7f0d7261bd5. 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/QM7282107904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775cdb5ce3fac631cf8a8fbdcfa2bcadd67ff42c59a9f448c6a25455ad7f1b1e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QMDA62106044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fb1f5c33c1f634be7a57772d5b5a28ff1065896f0ca73fd27657f7df9c59f4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA062299608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92206bb733af58b80b7a9caa01ad92085c13adf3d2422d5730d5764d517914e. 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/DGA062299610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf091962fea23c87be176ee4fced0d3ff551d07a32214e8eca8157f9b004bdbc. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:55:34Z), 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/DGA062299611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fee04bdc0a8700550d0708492e655603aeb38e15929c8e0eda61edf0f3ab30. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA062299612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111da33d985e7b32b99d707b4533c2dd83751d5481aee058ccb74830977c7eb6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:19Z), 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/FRX282367992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a30e4c5fe23af55ff53bf153c0bff75dd938de048267af687cceedd1970a826. 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/FRX452340671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8733195832ade7bc8bab06aa745085f1ede80602deaf50826f935660c329e716. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:53Z), 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/DGA062343211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db7025a5d3b5494c1c3e36d1bd6eed7ead5616a2f65b7c62a1c732edc6f2756. 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/DGA0P2328254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9876a44bbf9fce191201b699219f16db9ad2d92d049098e75be40689e4c94653. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX762489291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebe6686f291eb228819aacfbc0471150fe29aa29e483fcc8e3082999c4b95c9. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DGA0M2467707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b52aec8b3a763f2099e9814fc61c8e2628a61bf93b64c3f40d9b3008569e10f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA0L2407501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22c9908648caa75e6752e0c7477e90a97cabb94f8f5588c8b5bdca2501bcc23. 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/DGA0Q2433941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fa53839474ececf416d3a81094f07e1dde1b394f52b54c5487228b7c3207fc. 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/DGA0R2483130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd538f19d99804a2da428a781ccf05d16702b0cc5a4fa662e7364051a6259cd9c. 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/DGA0S2462344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9834ffb90361afa92de482195f1998e5789dc140abde869678071ff5b0b317be. 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/DGA072534991.