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 0x5f35bbf31747758429644046ff20fe939c0fe50a8368201fe25413204e634fa2. 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/9650b619-2a8f-4501-b145-d4cd24a924e3.json and https://artists.proofprofile.net/proofs/artist/9650b619-2a8f-4501-b145-d4cd24a924e3.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 0x2ac7312036c2ec5a5cee989ffd5565d32508f0fdc7cfc8eb5c331d661084615e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES92583163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a66bbc5c45841806794999c41ab8a46753c189ef99d9611ed2bc46a7bd1820. 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/QZHN42516827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596b709d3175e3fdf4b98cb7da3ce977017008bb9e3e8696694f7e8f5c253a23. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZHN42516828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256db2895b85fe48ca4e87dbf9600ea3558dbfd52078ed7f99bf1fd3ff4d2f46. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZHN42516829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b03586f0e1dca6b877f66d05e80943ee37a7220a12c1ddabf0e9ba0ba59b638. 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/QZHN42516830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8a59b28155be2f5815e80dbb513838ae7817ceb36a205b04f09ea43d26f2c4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZHN42516831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7aa9e34a39d22fb5c3424b874676f8c1261b1f4d690092b4e137dc672457a1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN42516832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd463ca95369205fd703e94b67654265deec41ba0330202694ee23314b2aca599. 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/QZHN42516833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d41633e3521d795aab0d64a8ec1896f8d2d810e962bddef134b9025c17df480. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN42516834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10622d648012e810dbe77a755e7c07541ee9acb2238107d650fcbe505750995b. 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/QZHN42516835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84abd35e6998e6bb5aa22359ed46d555b90e54e8ebd9b3a7a89c63554c7cc20. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN42553333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47a513dc570fa0867b0ea06e40c6657cde0d18c4da961eb5503623ecb8f9d5e. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZHN42553334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65d60f96dd9e23c7b0ee7cdb4e2687985f7b1e04642eb4bd0f4bb8d52076220. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:14:08Z), 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/QZHN42553335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3170b7610d05efaba3f13716654d5825c5c7ab13066b869fd22d243d009a7375. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:02Z), 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/QZHN42553336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de75220f4cf40f8a6b1073ee07518b96e1640cf699c68c271a5f5879169d584. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN42553337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e5abb90658c3e3ff8b6878d7c37c3853a1cf71e7af23e59733c194167c28fc. 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/QZHN42553338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d326299f0555e2668e0f18539c87c6b7a68b88ede1e73789ca3829c3866b0e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHNB2513630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae145fa6cc3d96502ae0c53bb780e7f054da09c3eab0708b60a91db98e89adf9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:27:38Z), 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/QZHNB2513631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada21c09ae2c655cee73de4f6e87173e743fb7bd90908e1888be85b95442c327. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHNB2513632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc958fa444dc4bb0117dd468d20689570f11381b62230db10bb4893d1915d671d. 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/QZHNB2513633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bffef20592aa0162d8657079d99f36550857466f758a941269fd1286bb9cf0c. 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/QZHNB2513634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8c3626204ad21806fb0e9c3673ea47c4e4b6937e37ad6c2d4540daf25a97fe. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNB2513635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc0457e40d10dc57cec45cb18659a939755d1e53cfd9688f5c04c5810ca823a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHNB2513636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334f1469b05e1e81991fb62345a8e714c2e0703f622bc106e87ffe38c186eef2. 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/QZHNB2513637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f75533a94c423f5acb638346565a7af82f0cfb200baf1e17c384c5a3af679d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZHNB2513639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0bcb54a942a7a1fcb2caa1716ef01dccc9a9c8c178f55942ef9e0d4d017a14. 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/QZK6N2513517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde806b8d47d28bb64649feeac39b89f07c034c3874e9ea05406cdad9c4b0f094. 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/QZK6N2513518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fc2c8ec2b156a80915de4d2384255db323e5511df51702a12a3b9061b9e623. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6N2513519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb651b6fc3d58216469ad02d4f019913a27cf0d9c7e88ca766616acaa69fa4207. 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/QZK6N2513520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f35a9bf38c6c016b81cea6bb36a3eedd1b5996f72a61b9142f98de086d33b. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZK6N2513521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d1c188f06d51ec637d8d18137890ccf9f77816261325cfdfeba5e5d2a33c2a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6N2513522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efedbcd036f95d0e67ba5cb81a15f6444e29c7a81f8ab13728a9c2d0e708199. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZK6N2513523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171c0b0aa981179f60f386739ec79cdfce69ff1ab8a040d38cf23d291be77e6. 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/QZK6N2513524.