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 0xa3b8d6cf3a5d94cd66b8ad7d1b764575f9a59fc54f37c45aac6e1b5c387cc2f5. 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/695536b6-38ac-4a12-95e8-8ab2e50a0527.json and https://artists.proofprofile.net/proofs/artist/695536b6-38ac-4a12-95e8-8ab2e50a0527.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 0x1c4b142e83c5e4babe76f8f1820c15b619d048631b9c7dd69746c30809472516. 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/RSA221816922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cd6822ab560c427f4f3b1c3020f7d018c2d35d899ee5c54d1843eb27330eb7. 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/RSA221816923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ccc8fc3dc50671713f25ba6c32aa08f2ae752d6afbba9b166d11fecefbbcb2. 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/RSA221816924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfede82b6a5b8316eac8502279586649113a4c99426f36cf57967b36f61715de7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:16Z), 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/RSA221816925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac07ff0cb67e815af890254947508cdadfaee7820a904d5f5485fa066e9292a5. 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/RSA221816926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee39c426861a97551d34e22f4fde9e210daa25a1a357e09e6d61eaa2192c195. 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/RSA221601684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42717ba684ae68ba13af5bbcf5b6f7b57ca1ac901fe0ed307f85f0517fa569ee. 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/RSA221818842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ce2766b2a8fc9f15fd59d33010a3218dc2fb518cc29650c0a06079b87dff37. 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/RSA221701267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1fe1a8713d841d8d1836e63c8006572c2ee2e7f5bd7630f70609b0fb565f61. 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/RSA221820165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e88d77ecedc06680907baa4c5d70277b3a6cdb7049e79cf6540dcab386361ff. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/RSA221900854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f05fde5ddb40da3385d822e57a8590c9fb96b723c01396a4dc5739b0cda6f9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RSA222090011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e2c75fa7020bdaba4d18773c679fb8f93c1dba0348bd17ad184a3042af0689. 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/RSA222090040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2148bbd250ee07ff767d90cb93344e82d320c0951d538f3b64c1723d83cc1f. 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/RSA222190048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cb31ae4542a5392b2bc39e80542e1900b0127f30a3d59fff5c0dddb59d2a41. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/RSA222190099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb06f1e09454a11f9623af49b4e53bdbbbb018a29b87e7bbe0d06d835731daa. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RSA221820736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cb31ae4542a5392b2bc39e80542e1900b0127f30a3d59fff5c0dddb59d2a41. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:57:30Z), 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/RSA222190099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed14f59e71e1b8a6c967da3c88d5db993641eaa64e769aa04051341e084e725. 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/RSA222306373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d25166dcb6c54ec2b30af27a6883e85114a9a1f29e49bd95998766718f6971. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/RSA222306376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c354b55c64806f24a1560f6ad202602c860003e3d8573e5f0e81d5b629caecd. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/RSA222306374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b0410dbc0a565012b47190273f801dd79c1622888c115902d99dce1f9d91b4. 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/RSA222306575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b0410dbc0a565012b47190273f801dd79c1622888c115902d99dce1f9d91b4. 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/RSA222306575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dae8f7fc30f98aa0a367d54e3884bb7f5f85b261483aee44cdb56c098639d77. 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/RSA222306679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebea3a3251cd2053c9502655dd922b9ce3b4ed6a3d60dd7dabb0daebae2a14fc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/RSA222306375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d25166dcb6c54ec2b30af27a6883e85114a9a1f29e49bd95998766718f6971. 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/RSA222306376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86830244eae91ca6ff446321919e04df6aafca69a67f4db1c4e5fc95fce0efbf. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/RSA222306676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62866b1ff47ffb5ec7e7ac4434685097782a6cb4f2fbca7052c993ed900ca8d1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/RSA222306677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c36bd54305127278bc402f0c5799075a1e6802f2c5fc832d9f0c064a5a2986. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/RSA222306678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54da2580ca48190a5c7166636f2d37bfb644a90b2bb4d8dbffa952cda9d59c29. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/RSA222306868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de837eb7f386f783f222c3dcbecac979dfd85cfdc07362db02b5a818d4f9544. 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/DEKB72533402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cea5c16ac6d51e202967992afde3e523225ab4f9ee9808a6a04fcc7e6daa974. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RSA222312882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fb653fef22ec8bcf781f9a6a92a5c202e6fc656708fe57aed95d76dd45e0c9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:15:37Z), 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/DEKB72535788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73f8be32c8b497449d1b5b34e7322bb1ccfcfa0e6f783745df87513122e5065. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:32Z), 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/ATAJ12500840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bf4f7772e26fea32b8f352ae30ea1134f51357eb15534a1d1479188596b973. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:01:27Z), 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/ATAJ12500841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8afd500f0d28d7264d1fe0ccf4a71bf92b7c8971b67d6ae96fa5d4738feb8a. 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/ATAJ12500842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a53cd5e7cb82928f7a8bb71551248b30823ff627542e1c7cdde192ea2ad113. 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/ATAJ12500855.