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 0xe056afd46ca83165fa6591a9b19a589b43bf532fd2e906fe9f4a64f073a20699. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1730ff1-61ed-41bd-afcc-97c0759b5df2.json and https://artists.proofprofile.net/proofs/artist/c1730ff1-61ed-41bd-afcc-97c0759b5df2.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 0x0c42fd2b163b44fd1da3bb40562af50530e406e83653d6becb85b2eeaa4be651. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:37:29Z), 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/USA561030277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abb67b0a960ebdd072f64466cb2012607fa6db10a670dedfa753e67fbdc30a9. 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/USA561030278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e31ff6a04c89f50ea8c0abef915a83736e8ad49409888c5cd0b0fcee46a3026. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:32Z), 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/USA561030279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5da1fe881b5f288f6fd63d2b9aa0734b422ddc38d44f718ace724b86e9e494. 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/USA561030280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7173a756e5d62398fa11ef5119ed07404126e6287926aa2ab336941c6954e967. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:04Z), 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/USA561030281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121af5e3cb248071a5f129dd3325a43770ff735cb3b00a56962766c0701ca03a. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:50:22Z), 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/USA561030282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2428b0ba5f669a3a5bf9b715b36b3df9fc1149e87800aa258b77ef039eb76b. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USA561030285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1d664442b7a28a61bc0badf2eb298a8115685df7622571333c47dfa95d4114. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA371260893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39987449c51d7a80755272ac6f73446f73b67aa8a2216c9bcbbe918e7011a6b9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USA371260894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7c62ae3e6d3b1b14625faab7fe97917910f187ca908ad4ac3c0a97a2ab8df5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USA371260896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf361861e7be82e311cab40b2532dc63e79632a1bbb0945281761306ca781382. 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/USA371260897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1b64fe6b17da24d58e9eb621bb4472280b5a9f988b9d41fbb80ce717690a03. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA371260898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307dc9493edebe63616ee764030f51a7148e166dddc656f16c6629a30f71ec1e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USA371260899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3390476ecd05ab3bd51f13238a519d2909bb8e094ce55c5e1384cf7f63e6e447. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/USA371260900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f687d8fdf9b6d91409782ee974f5424b48a11657d6e94ae76e0cd77ce77dc30. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USA371260901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb1697671ea65d9e98351db8dbc8bfeac65ad57719d337fe6e03bb5b5cae4b9. 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/USA371260902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7399265f641d0d4047cbd0e516fcaf916b9f39bea35e4c24a9c424ac485be89. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USA561429487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7124177ae267b7037a16a0aa59622397a233f3190dd934ea3902d5a7e609b4aa. 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/USA561429490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2de14602568c3bb34e1e4b0a9979f44a9b57221d8d52f83d5176d581c72fed. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:12Z), 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/USA561429492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0574af4cd896a944c2ff83da3aac3907286711177ca67b7e9902434d7f09c9. 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/USA561429493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20668f08dbee8f856561cf16266fc09f9a05ae98832ca1c8e8249dedc535ec3e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:38Z), 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/USA561429494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f29edb0b4598d38853dbcc5d1d82ed3013bd7cff6f81c8575e26fa9e7d174b1. 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/USA561429495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce748aa9cf679781964cb1d9132375b7aca929e94246394125a089e00024df50. 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/QM6P41527845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47602bc589905cc41b8a9f22581b860c6b477c5107ef77415ffd1ecc32f86d19. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMDA71526842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d37f81ec48b35b0c07fae55e1dbfb1935b6787fca86ff4835c32f47081650ed. 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/QMDA71561824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0119d142f61639250c19086d76bb480cc2bfd087678a07dce9bd78144eb36186. 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/QMDA71561825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73de8bf5368d309b903f2b1658c26ef038f0dde92a574cc612d7c4d4cc96cc2. 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/QMDA71561826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be7f6c8ca6999d9da68636813420a0d44b2e3bfc14af09b5b916ff636ff270. 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/QMDA71561827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7896df5bafd27391169be578919f91b535e75a55c91088f864a2b729864909c. 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/QMDA71561828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74162ef8cc868872bfa10136eb13399d7c8aa63c502845688f09d41cd8f863f. 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/QMDA71561829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53ea6dab2aa3add6cc336090dffff040340d98f50a075a5f642593cb5e8e419. 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/QMDA71561830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb81f2696e3b58f2709bff8edf80ff3cffd5cb2be15a017f04950d83bfd2c4c. 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/QMDA71561831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e0cd47e8cf6e45229a73744bf8b95ad7323ea4abaffe7bbb77c0824a377fb9. 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/QMDA71561832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9a0f5915328d52dccfd45386222139683064ecc6c5aa5e10c868d59d040b05. 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/QMDA71561833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2615fa45abfa112ccdff2180ef97f5228599bdc7bbc5291cc31eea6f7e99a056. 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/QMDA71561834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baf8afaf5bc43488eb0eb8844f7662c57580635bbabafd67c10d9f83eb26632. 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/QMDA71561835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf16a05e4af986bb18f22a379244fbc8cc54b3c7d1204cf2365059335e232879. 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/QMDA71561836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a09ca8331c85b78432f1bb7b8e427042268a1097401797deeabee21a34774. 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/QMDA71561837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d66abdedf22c01928943210fc6b5803d136300d6a71657e2a4d08574cb29184. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QMBZ91685091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c5da22d7634b4142619608241c36f4e843549afe558f96c8ebc820c06d78a6. 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/QMBZ91721324.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb61f563a75e1ee3629d4226a0919978e38a8b851258b96dc6ecb86026a3391f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:12Z), 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/QMBZ91758524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf17a8c26b545ba3ff6a2480a986255058f66a2ac8b108a5047b94982f4cefe2. 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/QMBZ91758527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827098a101ee9729a5847e24c0080ed4eb30822760d1fe086649185955c68cd9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:35:38Z), 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/QM4TW1969744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346da3d957351096b02715d19dda3ab22d020682b8c7cda2c5161cd761477998. 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/QM4TW1833533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b800e0a92568bec473dc88ec38fe62ffc86d97f495490aff0cb86b858bcc89. 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/QMDA61515067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f69905695893d446c762ebb8e43c201779a95842005a91d5bfd0be0aa84d2af. 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/QM4TW1643031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870d2936fc1d8035676aea28972ba507935178551248c1ec3956b288c5ae242d. 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/QMBZ91940116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01549bdf65b73560d49c6db050a57e1e11a045ed3457fcd84259e2de6d1d1e4. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QM4TW2098024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0a4f823565671fc51b17fcd8fbd99050f852862bcd5bdaf5320d5e690f4507. 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/QM6P42030909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1f83c2f85eb26954d25f66537a99099b4d97a55bb8958a0573bbcc00764590. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:38:02Z), 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/QM6P42056977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627f5105d64ae7a0bb523f5c3b7ff20697f10fc1ad5055a7c08368858c3c223d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QMFME2189384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb681409ba6ae53134f8b7f2c51c834a9b7548623b4d78a47f51cbab302c8f62. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMFME2189381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d03078270be1e8a11dcc6770cd8a7919c4271de4b993f6730e4f365fe5398. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM4TW2266655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1208351e96a7f08a50f8cefe05b4292c8878a0e515e790f2a3039f1347669201. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QMDA62250228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daabc8f330582d75fc6f676eeb0f03d411a54d244969abcd2c0f2ff53558ff3. 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/QMFME2232842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2114f5c156e34f3c6f6451a563e1fd73a1b421faccb30ec3856d4b1661198392. 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/QM6P42365161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9810dd91d1faaaf652c2970a437f0d8ad4fb1aecc2fe3c605b8777a44799c3bb. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:01:48Z), 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/QMDA62453549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb47f503a8f22095e6a7c5b0b074ddffb8357dba1a8c13ec2d9f653e1e16e0e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:55:15Z), 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/QM4TW2534937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2114f5c156e34f3c6f6451a563e1fd73a1b421faccb30ec3856d4b1661198392. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM6P42365161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1208351e96a7f08a50f8cefe05b4292c8878a0e515e790f2a3039f1347669201. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:39:59Z), 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/QMDA62250228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d03078270be1e8a11dcc6770cd8a7919c4271de4b993f6730e4f365fe5398. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:41:08Z), 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/QM4TW2266655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870d2936fc1d8035676aea28972ba507935178551248c1ec3956b288c5ae242d. 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/QMBZ91940116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01549bdf65b73560d49c6db050a57e1e11a045ed3457fcd84259e2de6d1d1e4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM4TW2098024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1f83c2f85eb26954d25f66537a99099b4d97a55bb8958a0573bbcc00764590. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM6P42056977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9810dd91d1faaaf652c2970a437f0d8ad4fb1aecc2fe3c605b8777a44799c3bb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QMDA62453549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0a4f823565671fc51b17fcd8fbd99050f852862bcd5bdaf5320d5e690f4507. 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/QM6P42030909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe92af26260171fac1aacd9343613ead926a9e41cac2bdf22fb4ffd7c8a21df. 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/QMFME2189383.
La Cárcel de los Presos Inocentes (Acoustic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6b61daa0434d8ebf7f13f8c5e9355e04e60a6dd499f6ad70d28d1c5cb7fa8d. 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/ES71G1860355.
Mi Mundo Está Vacío (50 Años Sin Nino Bravo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb6a226562e81522b8c23aa2f9d6cb41c02c32e6f5cdc19b45657cbed88dfb8. 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/ES71G2309682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf144451793d1bd175fe256534d8fe46a865fca5b90f88591b7e03acc559daa9c. 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/ES16E1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc00e6e91294ec3579dce0189df207c142a0c2b1af1eb9d6d282bd747d22e80. 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/ES26E2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4e60ccb88deb58dbb4fd3ad5654ca2cc7946aab341e78548c5432f5af298f3. 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/ES8572074406.
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