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 0x637d8227fa44cedd329ab01b0f0fa882a7359e8e1ab36a69d1b96ce807a5d1e9. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e498e313-2bc9-4a9a-873d-27d4cf7ba876.json and https://artists.proofprofile.net/proofs/artist/e498e313-2bc9-4a9a-873d-27d4cf7ba876.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 0xd0cf49ad24736e1e30f43484edab094d1b46a4252938209cb6ab50bc5084f691. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:03:20Z), 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/QZDA82212379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb23a5ad4aca473ed61d8afadcf3c5badedef83085977af8fc29ab76d639341d. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:04:30Z), 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/QZDA82212384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f621893fc9c4d9284c0e17e4339f5d55728b4c5c884a74875b57220235496f1. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:34:15Z), 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/QZDA82212738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8d56414c8ae60dadfaf594ee15f82f4474aac30979232baf9b7b87ae45c5d1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZDA82212739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff827cdb8afa4bc35cee8574d3d1d20b16254d90446ea218e78149a9329aa81. 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/QZDA82212741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47259e0ff2f01467d15fcb93e4c562b9be938f67f66495a5135a65daca51797. 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/QZDA82212742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e81fb9730358330c47d76b50a7e6c55ddff63b37bedcef661c21eaa36413ba. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:07:32Z), 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/QZDA82212744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0551edeb2b0380e7c70cd8e921e1d484d0fb7598f9eacda718224876c00953. 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/QZDA82212745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b80598d0fdd44b2997dd3eeb53f5cff7557cf840b16cfc0ac4a6b8d0946becc. 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/QZDA82212746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0dccb131bcf2e8c00a95fa298f65f48c7ef253302a9bfa23492451d6327498. 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/QZDA82212747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00324ce87e7b27851ecb966e11ef569cc0b03a3e2c442eda63f9b1dd6715b292. 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/QZDA82212749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e20ffeaa87070bfa4ab160c1ad07b022217a88228a5a43d8c7fcba421cfbff. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA82212750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c43c3cb20c3d0895f5c30f4ca2acd06619f3e1de86ef832f2d1028eb297e87b. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:32:30Z), 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/QZDA82212751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863e2b1d3a6676c6bc2f1d9caad2b53d836ff68d33c7967ba3550a643dea743d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:11:31Z), 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/QZDA82212752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13033264dd64a86b905acec810ac45721c6b734efb887526745c692de510c1a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA82239190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d7b952f4e372fd79d5dc51670a56b0d587f1c34852a033995d653f1bf669a0. 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/QZDA82239193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8af2d893c0e96c189dfcd46608f1f9cd62b326890a1b3ce49ddadcb72783bc. 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/QZDA82239195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d845d818ed34f3780eae3f444c672bff3b8d75b0cc2802173723b4bba350f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZDA82239196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aa0b39068dddf6750fcc9f4a756c79328abc80d52e58d216bd182deb8b6a12. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:41:27Z), 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/QZDA82239197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfe23b6a9363814d5a931aa8ea7c95abaa49a624b65387b12d6099a78e299a6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZDA82239200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d94fced67b76c4ca62061ab267dc9466d952f2b16c3653c2886309ab1ff433. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:56:07Z), 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/QZDA82239201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da3dc04c2215978860acde0dca088dce2244204703006aa498d093a469b91fc. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:51:48Z), 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/QZDA82239202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32727ae7e7d1c39baab88d1596cfff3a0cdb4425690906a269f5942236eb3bf4. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:43:26Z), 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/QZDA82239204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f557ae42e280e2df5037d69f9b6f4eb8af8ee4df546f847d81d5a7c4776837b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA2M2205108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22353ecd19cb6277d55a1edcb2d15325c58052e8eef2ffcc9cafea15f67db6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AEA2M2205113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6a8ecde79fd286799ef1976b837923b8fadd03c06b7e0d5f83a4c1c04aa4e3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:10:39Z), 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/AEA2M2206056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd3ab8a4befdfa93468e2e240a20dc6ab41c946dde25556c2f1aba03a8540ce. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:20:01Z), 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/AEA2M2206057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d675a7f383874d6e3172262b9062c71b35f1c4f7070d42b994782efb2fed833. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:58:34Z), 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/AEA2M2206058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f529451422d576f54eac6cf809b3aaeec43e886f3c37abc1e591ebf90f9cd3. 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/AEA2M2206059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87f31819fbc579bfa973b8ad672a094219dc456be088b2e15fa7730e88a7580. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/AEA2M2206060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea43960a6635decb57b9092bc228c8b36dfc74dbaa3d35d6569b1962a96e815a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/AEA2M2206061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df89f7b0fcaf5671a91c23ef7d7b9ce42b9359b6055871b74e83e506f570a57. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:57Z), 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/AEA2M2206062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca21bfb728f730481a7399c8b06481c6abc5a844ccdd38551bc557fa5a7e2f27. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AEA2M2206063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d722fc0601f69853c7f1f5b3683a4994c92ec717c18cfbc61e6c7fdd4d424ee. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AEA2M2206064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f44f06a7fd9c7e46036e3c06c3d1efca016f7bc6d38710d26aae6af01ec5e7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA2M2206066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21d3e190ace1c61ebb29636903e1a100040a8fb53e58bf33d1ff0a265f845cc. 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/AEA2M2206068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1617b3a94c6aeadae817c6e05f7ad57c1b5a2440e6b3b5b1e6bd2423ef9832de. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/AEA2M2206069.