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 0x0b2958d5f84de8694e1f1bd0dc1d7437c978068f92efc520c43e9d4977e4dbaa. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d0c9a2d-eb37-4cff-acf8-8410f1ba2068.json and https://artists.proofprofile.net/proofs/artist/5d0c9a2d-eb37-4cff-acf8-8410f1ba2068.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 0x332506e69d1348c57b82a383880e214df5aa91349c90b754351b6e9271fbae6d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM3DF2278603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d50a9a741b54b7a2ec5335ea26d9e0ec5bbb59238334b0038d9d72198b9303. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKZGC2406260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef949804501a3490d550c9e342627384c56fc47e1b1837d5941949c04504462a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKZGC2406261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787fc5185ab2d3ecb8d1c70b5334c43f8927ba9366920c78d2d2038e10fe8e5e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2406262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc90b8eda503ee6635ac9eaf9f0e69e1eb03b7fca1bfaf7050fb1eeff7ec004f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2406263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb961fdeca1de3b59407382424bc76787aea52c34a3c66a4eb2520067f30a98c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKZGC2406264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da5204ee147df1e507bcc15c72b2b5b13b947df2e1591ac5a56c4b1ee2c16d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKZGC2406265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b4b0ac452a9dad38742ee3bf8865cde9aac27da88aeaf424f6101e8d5c33c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2406266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8686d059239eb6260aeda5682076f6bfd053fce598d0ab33f0456c18665202. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2406267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a359c8217a0575a6ae9c1df14be967598fa45faf211cdafb87f6147cc995ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKZGC2406268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f99df75ed53b60b8e5a3c28e6a80402842d6b3f55b1b426e871b1900d104743. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2406269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07eea95b42a5b63fdff74dc5f5e07fb5b75478d787270a277c97f4815ac1fdb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKZGC2406270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a42da88cf37c871d2932033f49af3ddd9d8464566363796a17a3c05c591a8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKZGC2406271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cf2bba2921f0290416d78944913251915d135f082267dbcfcd591bd02d9053. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2406272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ccd965419b075257d81be7d00b3e1f8f6183cadf4a62091e027e12a0e9c9e1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2414427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929f4fac3d30ce09ab5f81ef663fa849a58b53fb7f52db33a059867c73fe052f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3DF2414428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc6f5b2249beabc006e821a4d81f22fd10d518ab9857d841a1c735068a81234. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3DF2403868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a2f1c99f50fd4310d4fe89f883e3db3d7f10ad9c4efcc66f4761b8036e343e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USANG2470262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e6a0fd861d8236d193da56a576b2cca50ac5791e88e6ac0dc15aea5f9f0a9b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3DF2414431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1b020062dbe3d87d6d204f0e656a31ccfcc160d0e322c00cd2750e82e1848c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2414433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc8042a6c1a9feb311c59c443d32b66fa90614142e5efed751a4d1d6a8c8db8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3DF2403863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe661096cf7a8fc1d8e2225f6a71bb794ec7665c9e989be5f706959bce457b3eb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2414436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e348607dab885736ff1034f2855f5f611c223e86ef7018ce716fecc90373f6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USANG2414473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f513a9c8656e219ec5f09aa94a8bbe723b76871d09d598416640bd4c3ea668. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2452598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cae2eac2a3cc9dbdecefdb35de466cb9e5112ae1ab2a9aacebfd0b352c4aba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3DF2426752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc6f5b2249beabc006e821a4d81f22fd10d518ab9857d841a1c735068a81234. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2403868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6359f19239d3f12892a4f9772ab26271b92cfe37af0db0559239654fc3d0594b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3DF2416672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a51251f2611f9ac6baf0f003b34d1918823edc051225af9e28d58bbbd11d72. 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/US3DF2416671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc8042a6c1a9feb311c59c443d32b66fa90614142e5efed751a4d1d6a8c8db8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2403863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a2f1c99f50fd4310d4fe89f883e3db3d7f10ad9c4efcc66f4761b8036e343e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USANG2470262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e348607dab885736ff1034f2855f5f611c223e86ef7018ce716fecc90373f6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2414473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e47db6ed5b6fdf196cce406981409f7d668578cdf23404d0a80fe203cc855. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMANG2233739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e609ed6cb42746590de6d2111108cf8c005f63664b0a9ef8bf5ced75de9f6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM3DF2257679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d109e6776772f0e87ba0599a8c26c25df819a67cd777fbc6b62e5c0f70d15f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USANG2281634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2f2745026e77aeaaba38c439d899d0e1eb00cb7eed20fdcd01cd244ec00dfc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USANG2253970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d85e1117b345e55c25f56492644794ed042b1e9609a99113f0f4c3c4f613e40. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US3DF2107217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6bc7912f686d7a538da573879516ea42da4cdc5ae671f3123df8a3428a0c56. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2251974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac203f1dbd1797b9af2f7ac9a82f1b5529d0ac56611bebcb7605d889b8fcb0f4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM3DF2251975.