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 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 0x9f3b80fb7d9a994d66e07765c59a2a95c1c08770d5e31c0c01393f2a4c5450d7. 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/62776bb8-fba1-440e-9f44-4923e0837143.json and https://artists.proofprofile.net/proofs/artist/62776bb8-fba1-440e-9f44-4923e0837143.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 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 0x803122e99ec81e30f87624fb10e747b6f36cbb57531ba0b5c90f11114776d343. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MX2331700514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca4a764295f2a57e69eee546628298230d7e9902c65190400e177573a06061. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/MX2331700519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea745d99872dcffdcfa47ef418edbeac656ff27fb72fde331ec5d3a34d959614. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/MX2331700521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f78203b100b2720795ee7e495dc7c8e416f5a06e51b322619591364de1c11ca. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/MX2331700522.
Canta y Diviértete Con las Ardillitas de Lalo Guerrero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c6667a7ad05d2d12b91a18c85447e2099dbc9a097022c64232bc481b2a16cd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/MX2331700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6b53dd2f0d5cf371bda6dcd4f9d857bbb1aa2fbd5cba74cd740938ee12af28. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/MX2331700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173d823531bb08401bc7ac4b1ba995fd8a9630e17d9d5a2dd547aec7a3096016. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/MX2331700504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda80271e843d9d3ada8f4cd325c0601cad988c15723a4c85b993e9d3542e5bc. 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/MX2331700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e44efebea951051d4d299476a02a742ebc7a550aae8f64c19b35602b4b954d. 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/MX2331700507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff37ffc756c744028792c5328b47a58d6653daac41898a7c7de16852dbf487dc. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/MX2331700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06556ec91b006d826b720023032df7c28716a32538ed88de54d9ab5d6800e02c. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/MX2331700512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7bd78068efdf81b19e218cd4837e6ac067349c1ce34e1a4c5fc377b9491b61. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/MXF069100449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2794edce302dd7c18925d3ff35378f6073a89a0c2ab931bc528f7b4912c05888. 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/MXF069100450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0d930f2613b13f0ce0b099327bdc8248e2412d8bfcf2fb7dc626db2d976c6d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXF069100454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78424cd49970ea8bb2ee69526e764d9f4b76507b2a62d43fa1ace7e24880e23a. 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/MXF069100455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2faa0dfac440ebb7881c2fea0d9252c1029932456b28df3a4d9dc9345a35a0f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/MXF069100457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb339c21ced7e03b277551e9e2addb931c699ccc2d4e83ff2b76d613760b643c3. 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/MXF068500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dc023501b046134ef4a880ef306fb09bd82f540d914a46a53aa69fe9ad49b2. 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/MXF067600114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3c77d175988704f4402d7dcabaf5cef56bce48ee14c76ab9d56438ba16587e. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/MXF067300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6086318616004bcd7f601761435a4080998eda63255673de987f9edaead6c3b6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/MXF068500254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1496584b6b939b34eac1324c17a79b6f13c377239e2d5c80094d89b7dde7b287. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/MXF067600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd42f0e34ab0426e46e41aea3021af82067b54738d7c3e273c79911cfbb6ff3. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/MXF068500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab9d99b7b5fbf53b6ada46b438412a8d05cf61e1831ac7191f00e0d89b00fac. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/MXF067800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078ad4e4b70997c95489fc88f0a2518707e856454201e0c5275060675080c44d. 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/MXF068500255.
Una Nueva Navidad Con Las Ardillitas De Lalo Guerrero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd9113c7916f6400e8831f4453d8758520d1ee6e235d118e3302249fba27f00. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/MXF068000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb339c21ced7e03b277551e9e2addb931c699ccc2d4e83ff2b76d613760b643c3. 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/MXF068500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f0148ba5487d6e47e6e6c5d830bcaa033fffc3ff5deced54b27eb7c21c5b0a. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/MXF068500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3c77d175988704f4402d7dcabaf5cef56bce48ee14c76ab9d56438ba16587e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/MXF067300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe6b76713d81f6a5b8ef5a53d12de038ce5a918461bed74e86bdd2d4015ac6c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MXF067700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f92e9eb5b345e3163b5984dce9406236426e1f7d5555628d22f09e80cb9fb2c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/MXA0N2200444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb1055ed74cd80e44fccfa97870b383ea8ef946937478bcd12a3e3067574422. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/MXF060400482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba21e5eeec49680a753e57e05305bb9aad791ecb6cac4a7e34ead4002051841. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/MXF060400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57a95a3b1b0ae6cf1ebebd2a9bbfdce3a751815ac32c972ae527f9a18810388. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/MXF060400488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814b06afbc09f45885d4572b6f6d3f04523572734a4183f3b9a295a83fcc6cf8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXF060400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a5347efbfa48cb90874cccf36df824e9abca567a15a02a9945c6c1ea78ff89. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/MXF060400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c2db40d28d84ff9398a86c803cebc42d58a8e31f5623d5798d346736b023be. 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/MXF060400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99e49b300f8e3aae7847eb7ec07e224f3cbd92e04b499b7d04e9299ce81dc8a. 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/MXF060400493.
Feliz Dia Del Nino Con Las Ardillitas De Lalo Guerrero
Éxitos Navideños, Las Ardillitas de Lalo Guerrero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f3cce35e1ac404d93fac9c4e83b1fbed16596727ce068aa02545cac8143bc4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/MXA0N2200439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aedf08f30b508198101f5b5c9e1e3a321ca8f91bbf63550c2156942a72956f4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXA0N2200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d64aabb95191cd308dbe0e240b95581cc2e2e462341f9f58447b4228aa6d26a. 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/MXF068800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231e0eddc120a3e8c0c415c39757bb12b0ec4b1d7780daa16f008644d8c25338. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/MXF067200340.