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 0x1d4556708422b2f18abd518bfd3d55a262833284c4002ee234a47dd5429c4178. 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/963e5970-4de9-4a05-99be-65721455ce4b.json and https://artists.proofprofile.net/proofs/artist/963e5970-4de9-4a05-99be-65721455ce4b.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 0xdf5afa4b92d69fd8bd757abc44a8a26810d79717a991986580a11bbbe8a3b268. 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/USCGH1371513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39e6ed0dc04a5bd2046b9bfef2a6caea9149db5ee335da3a8b64c665aee0fba. 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/USCGH1371514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc848bbf52aa96bf80eb32bf99b95966aca9f3adc76310e0066460b63b6d16b. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/USCGH1371515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3887dc23b4ea5c5f31217005a8bca561c28459c3d8b43c0af81df183d83f1346. 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/USCGH1371518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd896abc38d94457e02c2b3fa9581976fcab035f559577c3870d7ef2cf18e898. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:20:50Z), 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/USCGH1371521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81246e09e0cd6ea735808b42a1147a4f2bd39f596c885cccdd7cbd5f1d3f1927. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USCGH1371523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f32bcf52f7fd617a09a1ff6540d652e4027d059bcc8ed93b5d84305e1955ab. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USCGH1371525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8f8bd2bccd8f28ab26d28b551ee38c81893f816f280294e1f9d8a6bd001cac. 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/USCGH1371526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c48a49d98644553d88dba653983822dad8b8d7bdeb79844dc6ee0923e0baee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGH1371528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d1671d001cb019cca61c44a2d00d1a582b36ea7fed1af7be37351006971acd. 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/USCGH1371530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6955b67071811a236fad1e3df68aa1f1656ee8213cb3a4e3af98b549e41d5b93. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USCGH1371532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad64c238142376744c12e23dd501f803f197fd99b7677084cb43de64234433f. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USCGH1371506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5e870896d8692f444c1b83e50953c12948ccef33b664dbd176cb05a39b559f. 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/USCGH1371509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cb7bfb7d1ee3194abf3a02d989ff494c401c9a8d2bfb40ccd2b986ab5a925f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH1371510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129aca6a9e9b62c6832b56cd9cea852cfbc01bac7c784c9b56903b1140e9277f. 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/USCGH1371511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19611d5659800adec13b1f36ce7ef842f5ae0eaf7747eb04e38538021806e449. 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/USCGH1377950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272478cc956f294fd3eacf2f58bedcc8701f892e066274850c0811717904068d. 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/USCGH1377952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb7b97fb00f7edfd77373deeae1690e057def25192b17f7b4968d84b26bb657. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USCGH1377955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0911766150037916506b89b8e4e60de2ab90ff7e87931a693c9d2d3f63e56e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:17:12Z), 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/USCGH1377956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32aa648a71d5a744f304f412cf189b7a77c4cd3e83b3e9ac3e501d63e87d1d5. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USCGH1371496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ee816f98e1261253ee1fe5da19a519407420faca51f7694e8a1233da1febde. 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/USCGH1371497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dec43d3a525e95fe18bc33d26ded5fd07630f989565e76101eff4b1b9f467c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:58:32Z), 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/USCGH1371501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b724a8b977a2a65192fdc334740172591ea4a72977de02ea84d3affdf031f7a. 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/USCGH1371502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4d0014495f280bb116e86c83a2e04863eeaf7d883301b130ea4ce856f86da8. 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/USCGH1371503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2322ce9a9fbe9ecbbf7744c4dfa91bcc2122eb22e180d08460b3020bcf17370. 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/USCGH1377960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14d9e5619e4a131e5c9cdf2eb869b36421feaf06f4ffd0a1d3f2951f86d54f0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGH1377961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93621cbb7e3af1c69ffcfe865daa12cc8397a231abaef97b54388956b20a519. 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/USCGH1377962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91b294f87e044dc934111dd6653a7bc2c8813f786c71502303f4368588914cd. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:43Z), 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/USCGH1377964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acb5bc24b08d9a6b786b969296f9a459694f454630344ed720ddae37d93b7d7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:15Z), 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/USCGH1377965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9e1550501075dfd7af276dc358946795f8dcd54c3bcb57e4f5fcc218bb1cdd. 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/CA5KR1924567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e91fd93f1f3f5f3a0637914b291cc36ad2de501a069e175d059f6339b59e80. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CA5KR1924568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd934f63e5eacc51bd495fd28c347d26742e98df3f76fc3ca08f0a5bdfa744301. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:37Z), 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/CA5KR1924569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedad100f0ccd8dbd4d6329fe02bd99e0faebd8376342f23130d75f6573557ef8. 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/CA5KR1924571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3233fa8843469df2acd25548d8bd8f2610e36b798d59d403c0914e70155cc73e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/CA5KR1924572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70b8faf624fed2a7515e5071e71c37bb562cc4a50c4dc46daf08dba1ca97ced. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/CA5KR1924573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91885ae669d3a75acc847799a325d5efa0967ef613cd933c54828efb6247d85d. 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/CA5KR1924574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7330ab87038c1f1725026cd6f2d580c16716a269a16633b35b720fc3d7652372. 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/CA5KR1924576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1149e6d5b1ce0ed0f9c1c9b825f12bf4b3a9990e09852bf41a0c67bde4d8ccc4. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/CA5KR1924578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4746e9f1524d66f8eda4efbd8dffa2367d647f7214c053c9dd8c7f98c84e2686. 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/CA5KR1924579.