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 0x462437c4f0f87ec8a5bb50a6afadb7415edbb7d8d0d33a1b526a9366b99901fa. 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/cdaf82c2-ebb2-434f-a1ea-317e85fd2dbb.json and https://artists.proofprofile.net/proofs/artist/cdaf82c2-ebb2-434f-a1ea-317e85fd2dbb.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 0xa433eafd5a5574f9b3c0877e80d71fe4bb50ff6a1e58943a0f859a6c96ad6891. 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/QZQMB2107087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84fa50b3128bd58ff2b9287d302456b40dbd86b55749a3396873d93eb49088c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZQMB2107088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf586a4886cfa552d5fd3808edbc137f6db37f72d40d0f41513dd618bc40e9fc8. 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/QZQMB2107091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920cd10b8f9de931b28be4b8b343510de2fd8d8722abb54c668a1837194d6890. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZQMB2107092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fc95b75b983edcd5fbcff7fdcdfaf7a53aa51ddc605c99960f4257225fb18f. 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/QZQMB2107093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406f9702e151978e302127dafd73dcc3722ce41a137c4f0d2b0057700d41e6a0. 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/QZQMB2107094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158b090a619be2466cc644ccdbc964034462498c65f6215546add393b98af367. 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/QZQMB2107095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb2b709855771624c02c8562ba1c2cf4db657e197421d6520110f06c51147bf. 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/QZQMB2107096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8940cd9c3c94b37799ce6cd2575abea2264eea6682f32cc113dfb79c1a24eebf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:54:07Z), 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/QZQMB2107097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052e7baaae2603ec711ef965161fc0fac4e9ba068b2d1fa5df08221645b7fa3d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:05:53Z), 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/QZQMB2108313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeee911251266be9a8834f03cf3aef0a6f84bc95b22afc25e8bc576fe66e032b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:37:44Z), 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/QZQMB2108315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fa43bb2373bfe17414879ec97f27ce222fb822c86c8791ea9f292d4fac917f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZQMB2108316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd6c99b4088c295eb15036020d9838a14f57d382f37e2bf6887ec1ca8e1dfc. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZQMB2108317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b54f3903b781c1a1641194dd8c1fda694ce094ccc88fdfc0066c6ec8f57001a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:26Z), 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/QZQMB2108319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e2b19b45e1cf0cf41eebbeedd8fd3cba6e38556343a86e94ae3db754593c1. 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/QZQMB2108320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d1fe28e8bf21d48c8cd3c65ea970b9c3ce8e26ea3fd6d0d0f3314e0de8f0d3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:58Z), 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/QZQMB2108321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330d313d3cbcb11b58459755979d4865bcbbaa38822eef9ccbf1a468f3e2b7d2. 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/QZQMB2108322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70617b6455af85edafe9442562ad3a7aefb03b70aabc9f203f0ad55896a8c3d8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZQMB2108323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d9945dd420bd6b374bd8c324a42c66383986752f09899c7c50d21013816a85. 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/QZQMB2108324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b9fb72f6f6da5f39c3567e6872f7ffde858e343182f99f8d401d257a515caa. 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/QZQMB2108325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff147f1a4e510cc8103505ff1199ace196ff7a1c47cfa300eb0fe89d74be06e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:35:44Z), 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/QZQMB2108327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869a84fc2853d4cd56dd977c8877bcc00d93c9c5f635cb0fe9d67f03c4f1fc7b. 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/QT4C62500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b96d8c1f7feb8ba4603a23a30ce0af705438376f141518716951f31f18b014. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT4C62500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2a4a938e412ed5ec3377a261a2b966fff0d938b454b288345db95444cc4256. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QT4C62500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051a293847724a3756e44223082d4adcb4dc94414df9bc72b702deb9fe5299ab. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:31Z), 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/QT4C62500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91887fe372fa5f868e10d69886a315b2dbae062e7fe331ff9cdea52243f84878. 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/QT4C62500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c69ee4d972c80e7e22efce2668540ecad157b0d27bf66c51e18820eb8a0ff6. 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/QT4C62500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaa285a4f495497ce2fe38f1939eee828ed84f2226802dabc8fe92ea7a05ee7. 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/QT4C62500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5356e8d3d124ee537b64f85499ace1202e11ae0927806d8f29b8e99d082b6099. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT4C62500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e5ec2c062c49928293b980c28cd818a30f0c6a7bfe7fc8a6128a549f84eb3e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QT4C62500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3ef408e88c9bccc87a75bce261e98e10ef3319f04d82263b30e5ab676c2291. 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/QT4C62500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfaade3699fe0f4a3ed820d4b5ccc9fde0821a225deb6e4e61ed9f49bd20c23. 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/QT4C62500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7715bb5a28a4bb2e7a62636488d4fab38b37cc4a65df95859c6da6db734256da. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:32Z), 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/QT4C62500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8f282ccd6d50155703bfb4f1b1d79094f525769a8cdd23933f7ec871315b65. 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/QT4C62500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafce0b951cbf993bf9bf7046c332521796fd5d49b85f94435e950eb70af1225d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:45:11Z), 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/QT4C62500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c7d0d2f8e3692c001600af1811b5c02d68ba726a05bd404e60103ac71547e2. 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/QT4C62500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31498243dab99ae93ae479e67570fc4c965fcbe08306fe9352a9b4156519ba3a. 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/QT4C62500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d19f3546f1f65f904b7ba8c86450193b3372b1854b9870eaa320c2458cc80f. 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/QT4C62500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6827b606ead84df44ca5bd8caec6317798f3b80d19f4f65ecdda35af3a75dd24. 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/QZQMB2104112.