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 0x6be2e40bf074590fba1cbd75b14a17fc418c792c643a03ba96941bc97342c317. 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/d7455150-5ed3-4c90-98df-1747b98a6285.json and https://artists.proofprofile.net/proofs/artist/d7455150-5ed3-4c90-98df-1747b98a6285.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 0x93261a4d1c2b0c8c3de16a05169a03b96e3200f273ccd6c96219d19e24fc142f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEYOK1764417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b86a7168cfa068fd2f7f589039d88aea6f1d47363694a1787a2689bffb5223. 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/SEYOK1764427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d29e1654fdb444edbbdcf47db2369663b366f9f1069fec18498dacacad0e9d5. 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/QM3DF2112725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad0e7b63e42f424a01cf94d8a19044477f43a4e9d24cb1d3d0c16c980e9558b. 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/CH6541835335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87c6c8a151b5d124b4d9486618c1e6c7d339032a019e3219a04565d6906a801. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZFZ21981463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be15e0d21fa2bedb5bd98f67dd7d6674ad8d673be4edf0880a3ca0e299dbcb5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH6541953092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc12ef91af150e1229d6ad8aa779d6c6f6a063a2023fafef5f9334deaba04400. 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/CH6541798411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eba07d347711e0a34b8d76beef16ac04428fa577f5b71c845f6ef3b7f8a0f8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:34Z), 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/QZFZ32000417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb54a986ad18eb20c87732bcddbd6fa06f0ea8ce417df9761a681cadf5ba492. 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/NL1LE2000498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb552c386b1bc527a7354bb4273d7df6a14d4159661cdc286a1bcc8c094b9b6c8. 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/QZDA72063649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff3b2f53179d011e4db1ed44bcd94d7945e8adb913fccebca37aa1f26125a88. 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/NL1LE2000740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c075e659c6ba4025b88ce346da105bece07b121b1d6943a8570c326bba3f479. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2102389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d087792f27335cfe5c1296bb2ab37eb6220d3c1a0f453631702ef70b4b576da. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542113487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f725871e52c6df7cd090c347f918b6c7165929d524537b6619e942a650372b8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL1LE2001603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd60fd5c128c5e48d41601a94ffe88095e4815f272590991ff87cfc5ce3ed5ca. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:11Z), 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/US3DF2174650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f7c74fcd8692c1d1646bb35903a3acbdc664b6fff78701b08a6ae374e4ab6b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX762135661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1749b5c05bc7a2dde94a6be0854acdb3d4236733563aecafabdda2e09d72f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZN882160191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb03dd3c3b036abb07b61c5f45a50fb4911fdc30447c608bde252a7e405025ea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ022119637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2071882645ab8505cd8587e9e660094e9984f6f46ac32668591fb06df05894ec. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZN882246220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d47380890eecf92827f59bd3451b077eefa516967d26ee2edc14616d6d09a7. 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/NL1LE2202800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4c0272db67299deec9896224141459afc39ca3cbba01520faece4304d71dbe. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USANG2210670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843ce836a6f76183d59e026a36524e3222a0245371e7302cb9c6b3a4a09981d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2276899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf3e42443c78fc6275e3d80abac247781500bad6375a472f531681f00ea9143. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM3DF2207447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a90dfb135579eb7dee33cb883626a145f5a1878d517c049132c944816e2c506. 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/QM3DF2223481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa76aad58407a6c106365704bea580508cab85d567e9f334d2a1f9bf6261e37. 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/CH7812363524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c2dc928c0950aa52bfb1a89edb4e1eec1aed28dd82537cbc261a64fe4448be. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/US3DF2410641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a5084ffa7fc661388a29a58c2cd23c52419e889d4add85e73ec4033f5ffc0e. 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/US3DF2412719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4014f41f6c640f3164b660684a6c59dbf6a6b58198221c00b584137ccc12cd. 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/FRX202453743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eba6c0b3c6e07af9fa5a99759a8c07d144305abea23bc63a18702e83cf33766. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:11Z), 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/CH7812409847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d3aca7c08213725e2cddf47613d26b9882ab7f28d8a3973fdd7f2659e8fd7c. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/US3DF2488502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f70a797f5c7637ac66e9b41caf741426e9dec7ace71bdd76dbf5040989cea87. 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/DGA062494147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f509d5e06932616afa0ab0230ee4708182e4e23cc81efbbbe4325b6066490d. 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/USANG2437385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87b51f7a97ba08e727dde4e158049ad9582f818349dbf2c230ca40a473224b1. 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/USANG2437389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93182b88da1dbd39a1b6e7a4a5714fe828a110b39ee6b33c45dcf10d40604715. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USANG2437396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5090cacf15169f34e5e13711418376703163f004ba0afbc71285c630d42e69e3. 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/USANG2437426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9906d020bd4bccb6c4bf4113e5e7a20a52c157cf21e9d4788832b0566ea2bbb. 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/CH7812418484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1fc2cd9a1e41c686377004cefe0cbdc0d7f9e3fa7742a49598446b7aa63a24. 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/USANG2472789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44759028b3c595a4cd30c9faca3c4e31edc5d8cae2c4bdaf5692d3c1e3596c6b. 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/USANG2472736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8fdd04fb82178dd5784570b4eadb6dfd02fbb97b349c4468e23854d290b413. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NL1LE2403568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ad744dd30b57b11fe5eafe809bebd884ff48321ac286a7b9dee50cf99a6adf. 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/QM3DF2403625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805cba6369717ba3cfbc38e03fdc222e1a987c2899eb9b2ad6fc3e024ceced95. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2404011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dc806a16acfb2f1e8674d5e707444624447cc108a3c94c3c5de31a5585326b. 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/FRX282510880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0b949aca51872334329a524ef368a3e7848b4382004a2b53c6b116ef9ac242. 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/US3DF2545700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f0b35fd6f43d49185666db61c1200d7996dd367e521f72d0ee6f3ccbbda2e2. 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/GBLV62023514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb71efdef4c3aaba91957b9f2ef3eeb1b41217c5705ecc19a792ecf88f31e68e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNC2066011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff3b2f53179d011e4db1ed44bcd94d7945e8adb913fccebca37aa1f26125a88. 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/NL1LE2000740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6f5a4b096915592f23528d258cf46279fdb5e37d69e90ea0d7f9ed985d64d8. 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/NL1LE2302974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3381588c910d1de3a3b69ef713f202946d96c07ec974e1bf051e57d5338bf964. 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/US3DF2272012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292b99b830fed86667589d3f684b4c018156c67f969431fc740d8f0113e3995e. 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/NL1LE2302867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696c2018e7160f0836635f3af3b6635265ffc94464a13e1e1c85c3c10d16d52. 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/QM3DF2273365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99399803e3402ac831e69e8e1113c0de3fb700f952e569590c7069ae476e5c. 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/QM3DF2284927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5f39b832184b9182024df6882d2706b770920d7287a4445a5a61631774a856. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:30:36Z), 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/QMANG2236853.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336dbf5643d5594fa638b9c01e0838bfc43aaac5058b5fba98f62bcb5dbec2eb. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QM24S1820730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e6daee7c5ca1b6b829f9af5fce4ba2293145acd0049c20fb033c600d0d28a2. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QM3DF2254242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba41399cf09ff4376faf25b93bd28e824d9918b6e3054096550975153a8216e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCADQ1860899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343b66145698d5788cae80b35ccc4a6a813ce94d401460f1b8d28ce9c0f80572. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USANG2271971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74eb5267f1a7633b91478a9368cc02d6a6c26162a6325fe75de0dc8878d3ff. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR9Z62000249.