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 0x3a565976ba36a63fcc58d86659af68c874e1420398032c338357cb375eaf46dd. 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/d4535011-dd50-45e1-abd2-bbe745ae1e94.json and https://artists.proofprofile.net/proofs/artist/d4535011-dd50-45e1-abd2-bbe745ae1e94.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 0xe8041eac7053f8d9de379b3354a9f807d71571eedfccd2028290da9a42233c3c. 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/QZ4JJ1752834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2400ae3d0738a08e8b54c43ef9f0ff7235d9f05a0b4cede53ede42a3977cbf5. 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/QZ4JJ1752836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763964af2eb56d52910b04854143609393c1fca7d31687aacf4f2e303a13e0be. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:20Z), 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/QZ4JJ1752837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75daf66c8e8c7c00f62491deed39558acac68f80e122b7c4ff8aeae1a4df275d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZ4JJ1752842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc752492a5d4f78678a3205e5870dfcda8f36abae6a86a0a5ad4e6b486857b6d6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZ4JJ1752832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670e19c6a1898e5011eee11340fbe0200a209a3701c5229ff96fbc0ace986f3a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZ4JJ1752833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8041eac7053f8d9de379b3354a9f807d71571eedfccd2028290da9a42233c3c. 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/QZ4JJ1752834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d609ae8296af819b86392e0775c5b9b4544d526eeeef161e51931b846bd6f4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:00Z), 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/QZ4JJ1752835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2400ae3d0738a08e8b54c43ef9f0ff7235d9f05a0b4cede53ede42a3977cbf5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ4JJ1752836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763964af2eb56d52910b04854143609393c1fca7d31687aacf4f2e303a13e0be. 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/QZ4JJ1752837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e1e7714e7a537a2a6d32eb4a207e4a8ac67e547b8228b5dc7f3414ea2aa833. 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/QMPKX1796870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276fa6bda7714879966ffb914aa1ec1f4866b225b05cadae3cb7d62471bada5b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:35:07Z), 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/QMPKX1796872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e1e7714e7a537a2a6d32eb4a207e4a8ac67e547b8228b5dc7f3414ea2aa833. 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/QMPKX1796870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff493eac9ed74798c44004e5c98911c6038f69e50f2b67a37afb7e3f2ee037d2. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:01Z), 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/QZ8LD1757417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac282fe2b979a243135cbd433751bc4bc7d56242af97746f519af25502216df. 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/QZ8LD1757418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29aa44401c8290ced76d19cb130550001fe708c874b8448b4683ed269d66266. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:40:43Z), 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/QZ8LD1757420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3ab159a7716389676d653192b0b313643f9f4ff2e2b1947460ce2fedf8fc5e. 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/QZ8LD1757421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff493eac9ed74798c44004e5c98911c6038f69e50f2b67a37afb7e3f2ee037d2. 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/QZ8LD1757417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac282fe2b979a243135cbd433751bc4bc7d56242af97746f519af25502216df. 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/QZ8LD1757418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c047150613d68fe48f299db6c938d425d0dbceeb1039a66a48b2de31d330a8e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZAPG1772989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c047150613d68fe48f299db6c938d425d0dbceeb1039a66a48b2de31d330a8e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:15:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAPG1772989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d359fe4fdc2abdf5e3c41c054847d68511ff252c0316ef4ebd2a3c59729e1a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZDA71811830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4862d297f688456ec166f02100a4fcd140e66f577b75a5ba15004604ad07670d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:26Z), 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/QZDA71811831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c3a8a75dc559a086a2492805adbad74c654ee93c9337d65e6caccf4d47dde9. 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/QZDA71811826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca17c29f9d524494931ea246a571fdeaab150c0730a1e6ee286fa56b25fba91. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZDA71811827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d359fe4fdc2abdf5e3c41c054847d68511ff252c0316ef4ebd2a3c59729e1a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZDA71811830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004eb6b4c800a053911c1e73fe2583f0cb193f350d96a53f87a016d13e39d54b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA81937982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3298c63b042fdafc254b470dabd85f33eeef6d06fc0b053e1f15e0be25dfde. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN42044564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab68aab3802bd1232c147603123cd809fe8d33fd8a17db6e631c1d119c8668a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:59:14Z), 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/QZHN42044566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce100b636a9943cd6d59747423b160b9c560f9abfb40ee78f9185838ee9d788. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM6MZ2261611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feb01fde3671d4b750a939eefb5828996e46e6e4897f90b5f3b60b3cc645282. 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/QM6N22287725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55f950f08d49a40d761ae9171c958e1a5c1378f90486da87d8fccb115f92e3f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:23Z), 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/QMBZ92291429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf750ed59f0a325be7b6a8bebbd92ab998f7969928942768a0243567a142887a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA62259883.
Tantas Ganas de Volver - Versión Nuevos Clásicos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1adea779e4ed430e8aa2257179b8e1206cb4b565d83355e04cef2b85c1982c. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:33:27Z), 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/QMDA62262361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c9095eb56921012f77f9f7ad0bbe966ef20a9eacbdb69f9ad8f2aae20e5970. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMDA62269432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9009166efdb14c3b07d0047644a9940b559fc8fb3895a52afb362bbca425b9ad. 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/QMDA62269434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751dcbdc6e85ce34623393e475042478d823e1e269abc393705b47f32d27a347. 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/QMDA72385934.