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 0x4d0b44472a01acb86b1ec3d93f284606c38ecb2f8a7c5e2b4c408b57426683dc. 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/e766d2fd-6372-4ea6-9f07-7ed649b0b433.json and https://artists.proofprofile.net/proofs/artist/e766d2fd-6372-4ea6-9f07-7ed649b0b433.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 0x3a93910817b545d826006056e5023ee5f2f37efc78b6de53b46129eef4fb8a7a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEM1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a93910817b545d826006056e5023ee5f2f37efc78b6de53b46129eef4fb8a7a. 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/TCAEM1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4912a9ebf4d8ce0140136dc552e3896df8b7aca77839f5fd47f2b81adf1174d. 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/TCAEX2089403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b13c52abf64bc37886df7c90a194f7b8b9dd4db2fcda75a0e29f079e9fb227. 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/TCAEX2089626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a300be746108135cb0945e6df44ec4dc8621ca7026777d3648c4091ba15a3b. 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/TCAEX2089578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6a655e0a900024c633f71b7d1b14f9552ccf2cd88678bd00d00d3d191ca709. 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/TCAEX2089596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce27e1cbcfe0c0c6ebb5f93a1aa609b660ded9ed8100a8c68aa2e0ab271b07c. 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/TCAEX2089616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc327e5772f24d3e3afc922fe7e7f88d124809e8af94bf5e2d0c8c544de3bd12. 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/TCAEX2089633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dc0dbda84f60ad85fcc9204787abf5cfe9498bcd45d3489b98be31ca78905a. 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/TCAEP1904445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c7c0f5756aec6c2c858786d41d7ecebf9aba4f3ce3e5ceb2c5e32b73677bfe. 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/TCAFF2042877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db05a241634c4a1fd937a03e3aac532184a6465760008816d9c1648031e8cdf. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAFT2186670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29345f526c11c8cdefd3f68649d17732ec06c549c1fdd7814cd1d3f98bd08540. 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/TCAGK2253871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d405417523a783a9796cfd253aa79bc35712f9ad44f7fa63d5e2d1a29c997c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAGP2261905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae16c41f2370736b9e50df419220f4703965f79fbd67f5cd37f39e7dc63d404. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAGW2331355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8998ad60a158a002b67d5d66f7142b57c06e9fa4280ef6ebe536303451ccac70. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAHD2365032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518475e7839aae4fcf22ddbfd95b13919dc7659d39a6fec4b142bb3813070a5b. 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/TCAHG2314487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7700d5a2b0bec0f0c6c84216e4f078dfe6e9cfbcc6899ffefe90fe063f13e7. 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/TCAHI2392587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea9a8952e2e7e7e9328869eaccc4dee342621eddcf0b7de8565e0379721b25e. 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/TCAHI2392595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080fb2029769df39ad0150bbd70d145bc6e5d8f2bd0b28050c76823d302ab9e7. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCAHX2463597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729cc68e63fca03e063fe561595458690c8d862d6b2996fd8a9444937ee333c2. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:29:10Z), 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/TCAIA2406411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc676a1e39e7e0ba68211069c888f49c2e94ad7bd29fa1d5983b1cba65db4e41. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:27:24Z), 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/TCAIE2431731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d0b49315af286a5c7e3c14d807ff38a7f40edb2f70c02ae7ca69d1844c1c0a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:28Z), 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/TCAIE2431742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca3aa0a1f01c0ba35a08e206486606a1f96d005a2cc7fa020376c7fc7e6e006. 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/NLCK42234386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e418c96c998a7f8feaa36e9b1ecb929a6ae5e7060ef44cb55e7b9764399eb7. 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/NLX1U1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15f78c9cb8b37cce3bf62a6eacfb009beaac5fd451fae8aad59490df65ba5d. 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/NLG662400361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcba5a6d916b68875002d52b98307428046832bc295864351215c2811656f0f. 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/TCAGM2206476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae16c41f2370736b9e50df419220f4703965f79fbd67f5cd37f39e7dc63d404. 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/TCAGW2331355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcba5a6d916b68875002d52b98307428046832bc295864351215c2811656f0f. 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/TCAGM2206476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f287ea69696e155a30148c36261e240f6e2c399c4241b6b2dc8d560f100aa43. 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/TCACT1639827.