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 0xbe0f4ba28fcbd9715b9c0626eccc100ff9366a93f5aa6b5ef8b9630d214066e5. 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/7872b7d6-d1de-4b00-956b-0d4b52fddde7.json and https://artists.proofprofile.net/proofs/artist/7872b7d6-d1de-4b00-956b-0d4b52fddde7.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 0x2be8a99e72bf6fcab42b786be612f0be0fccc9ab82ce343a757aad362f5cd5b5. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/FRX452076828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f34d0b4aa73ac588d0cbf4a7025a5f92eb4c5a6a244e2479e629dce6e46049. 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/FR2X42067494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8057598c4fe7bdeaad56ad3c21c77ff963d0ceab28d64fdfd0947c705285b96. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:50:26Z), 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/FRX202009303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5352cd2a0b81c6be2aad94002fc09d2cfa9739ceb1b462c794298f9407627b42. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRX202009305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc665f1262988f6cef94b8f90d8c0918e196bb155e868d1306d2989b01fc2f6d6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FRX202009310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635f524b1155baf35fe981fc24b115da5b7de2e4af8da2cd60954b37cd5ca65. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX202009313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f61c0aa2f97667bf18ee6bbbf70fa84fa0bce208e9217dae786279456bc34b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FRX202009315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae15777c0e72c464eeab05dc55a7fa54c0f211a918347e138325c6340966c464. 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/FRX202030478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3cccdd6b5309955b53fea8a3c5410b3a922dc9ea73f203e67d0bcf6c6e1813. 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/FRX762019149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb4c7a0a0beaca30e37e87320c16f2f6c98a6ef89c38c51123f3c193cd8369f. 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/FRX872052390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74ee83baf8f0c53e1f8ee6f6df98f3f8d7601cbaf20de66d4c8ff2959264d9c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:44:23Z), 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/FRX872074502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c812aea1fe8b29d0ba89069268a8815f6b654cd6043d13f815cd7bc023c1ce6. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/DGA052015249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2821d59c14a9b9c6fba8f6b6363196749e192c00fb957ee58a4ca92b907440d5. 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/DGA052097155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729b5c9aaf3b4ba7a17405af40d32b1f376c9806791e8975bf3497caa3112de7. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:08:20Z), 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/DGA062046489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105e596d189ae135d8978f1d7bc582f54777e82f9de505d0af88f9e6f51c5967. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FR2X42190428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed9d524cddf6e01cb68f6c20c8e0e0f60589ca945bebf187dfaf3df3fd9ad5e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR59R2160426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf410433f7b9dfb7c36589964b8373297c57121a2f05663346e2d5d8464f153dd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX202117151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615e50d8dce7cb5051c34832f231a99277249daacd345a83ac106c54abf10e96. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:07Z), 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/FRX282148628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2960e2e2fa3f138d21b41c09ddba9f08858d93f63ce71a857405bbf005d24e15. 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/FRX282148631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3596b573173d0ab017d75ccb8f8a54c9353295ff4c3aefa11f570583033e80. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FRX282294160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf60a58aefdf1a50f97991c7117462c686c64989325a799e7714e2a5bca7ecb5. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:30:25Z), 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/FRX872289444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b49e925a14eaaca0f633834e69dedc472d29008affce7bdb4d56b9a772c269d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DGA0Q2451877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee05c4d6da0e99eefbf7dd6316a17204f8172adaeac4763e1bf0680d557b183. 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/DGA0Q2489548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a59d19d50f1f42fecb24edda05e9779976085ecead5d12c79a2db8a998a1bd0. 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/DGA0Q2489551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7e78f30346a1d93546cedc3ab2f6d3ac6e74ef4dbb0640b67ca78c7920f42f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/FR10S2599138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82336457f0b0248928dfbd234a588e34cefb116f45c899779618b6b972224330. 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/FR2X42588621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576e285a6cb3db2f5fc60f5b450acea9dd2d13d624fda56d320fdaf5a671db65. 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/FR59R2588417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf565632db4d1419fa0cec84aba4ac7cd4a32b6a5e10c2200fee03015bfbcf9e4. 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/FR96X2585240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462bda9f6518c07daa77ba1506031db8d939716cf7003bce77d982158d59d000. 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/FRX202573368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc696b0f9079831a4838c829666ade56cd063232865ca5d9ee32d3c36b596af. 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/FRX452511932.