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 0x6256021182c7eaafe66e876125eb96782f55a23d841702692430f4d3b1c989c6. 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/56804914-2326-4bb4-a9cd-8a06b7e8bece.json and https://artists.proofprofile.net/proofs/artist/56804914-2326-4bb4-a9cd-8a06b7e8bece.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 0x97e1dfb6ab82ff35d1b559bf76db6ff274a9820b84842f9524f87c082f28d76c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:36:34Z), 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/JPR751800188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f8e1cb08457222bb77f70933a53ba5d16f04c62b1b3bd2dbefce0fbbaf248a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:36Z), 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/JPR751800190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afd09ba16d04e08f7bd42f793ddb984cda65914cd9de04a3d47b81554b4cfe1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPR751800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e49962760efcca662081d8cd2ede7d91731751de34d8961b5d85f82dba52d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPR751800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94128fdcc1c7984a7cf376bebb789feb57364d274ea02caaee7be97985c2d2b. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/JPR751800187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1dfb6ab82ff35d1b559bf76db6ff274a9820b84842f9524f87c082f28d76c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:19:21Z), 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/JPR751800188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e49962760efcca662081d8cd2ede7d91731751de34d8961b5d85f82dba52d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPR751800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754144bbf57bb8adcb7c6a44e417b3ef558eb0a97b5200ccad1f848a4dd5e6e3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPZ922013755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448c87696468344ed23f614c306a904c4dcf124c70e52a8829c98f5124e59af0. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:50Z), 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/JPZ922013756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee992f382ef99c73ee7cfd5631227e047dc6be8d179fc76561f39ca54150ee. 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/JPZ922013759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4330fcd0e69fbf6292e87be81386f45a5dd5c4e70f7bce5cfb56eb6492248f1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPZ922013763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a4bc675d77f58d1a89cac2ac3796dcea341b5125cbf819a53ce1a22b8dbaab. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/JPZ922013774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754144bbf57bb8adcb7c6a44e417b3ef558eb0a97b5200ccad1f848a4dd5e6e3. 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/JPZ922013755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448c87696468344ed23f614c306a904c4dcf124c70e52a8829c98f5124e59af0. 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/JPZ922013756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10922e169da628c2ce23a73a2f1588ae8d66af79cb2ccae3ca76ef17d9ec1db. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPZ922013757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee992f382ef99c73ee7cfd5631227e047dc6be8d179fc76561f39ca54150ee. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:59:43Z), 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/JPZ922013759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdf6cc0ac5edc82a840ea2fade7d4b1738deaa6661e7a51f0084a1a86cad6b9. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPZ922013766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b24ac5f5c7efb64be47d554fbe1231fd6f6121c211fc08680805bd06ca6e023. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:32:28Z), 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/JPZ922013768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9a7647f536d393c5bfb36aabf6f15bceffbce66acd3cc1961a9903267301ee. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:15:08Z), 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/JPZ922013769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07476abb55c18a6a938a76210ee0b44dda1827ecc9f2c9d3a843003ededccb3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ922013770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1563c3168064232b1ba9ac7ad67fa6b40c5cd8df6fcbee9e391c9443837091. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPZ922013771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc755446d2a504aaed8faaa9438aaebfe0a096e9ad62fa19d6ca357cd6f7311. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPZ922013772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ff78c3b115be15cbd94b161b6f4d11241e634f9b3c55ec6c92761efea46510. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ922013773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b8e58843200f047039ac830761db9463006aa822df51fb2824086316172bf6. 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/JPV752003897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b83212b4652b93ad69041dcf3164ece9400dfcf99d12021e60ed80b6816356. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TX2374774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e4d17306bd90d4c6007334330a82991d5dade138b497638512ee59f753425c. 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/QM4TX2374681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b83212b4652b93ad69041dcf3164ece9400dfcf99d12021e60ed80b6816356. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TX2374774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2b0f9edabad5f7a224721e1cc67df980becfdf789c752dc27b92ce903e7da2. 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/QM4TX2456238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfcfd4be4fbea8531e9fc2225ec4f3621204877fb1ece76a56ebc9b2a0323a5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM4TX2456239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2b0f9edabad5f7a224721e1cc67df980becfdf789c752dc27b92ce903e7da2. 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/QM4TX2456238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfcfd4be4fbea8531e9fc2225ec4f3621204877fb1ece76a56ebc9b2a0323a5. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM4TX2456239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ba955663f8d6dae0ad307e8cbed87dadb78cc4a01e4919aa220f19deb4bc0f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM7282405623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ba955663f8d6dae0ad307e8cbed87dadb78cc4a01e4919aa220f19deb4bc0f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM7282405623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93283d7876cf0ae117363d5369e3b87fdeafa1456b2c2594a5931aebdb4c0437. 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/QMBZ92496077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ba955663f8d6dae0ad307e8cbed87dadb78cc4a01e4919aa220f19deb4bc0f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM7282405623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc8a0ce14adc5044e19311d6d007741732e005c65714e316f74d4ac012092d0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM6P42576814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a2f74d6ee0b0fd14f1db1a9cae2bc793797a00a42b2e631d0b46cba6b56be. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QM6P42576815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93283d7876cf0ae117363d5369e3b87fdeafa1456b2c2594a5931aebdb4c0437. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMBZ92496077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a934691178685ff7ed6a947173b0e7d1f43d6605c665c1fc06faf29cf386513. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM6P42576817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d645a743521ad8a44872ed160556b94d2f89b908fc1ea199862904e315488e. 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/QM6P42576823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ac8fa2c40aadfac5ce102f864aeaef3f3d369b85f300d043184ddc52a8f1a. 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/QM6P42576824.