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 0xf6d99ef79ea2e5646e09715a7d5fa1e92cb06fe0706a87abed8e93daecabae15. 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/a3b095e2-3915-4cd7-ba99-b8c3e1ea8001.json and https://artists.proofprofile.net/proofs/artist/a3b095e2-3915-4cd7-ba99-b8c3e1ea8001.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 0x51952918c545be1aaca9579c758531da651ae711ffe81643809294f1eed6b8d1. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USHM81486009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503e8ef09059b94ee5549278c7af246436d0601f72b83ff45b1a632d8aff1b22. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81486010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95638520934c23cfd75bb7f5f79900207e374aa171546c07a46912e4073795c6. 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/USHM81486011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfffd085221228d067122f6510c91f56b1c652675aa8e46bf43f91041e84663. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USHM81486014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d750bf6098ffa6f2c411d10cb8d5166f1e7a0cb9d58ac278dfea80553a8d0cc. 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/USHM81486015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c3477499cc9693380cd3fc6a775ccda3589377000fb7a078428d0981ab04fc. 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/USHM81486016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecd44cd0f67de24dc6ffc7ba52ac979e10e2cdbdd563a7c743a891ed7bc3a39. 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/USHM81486018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21517b7f2df0a794d5d7bad044e3e5c35f93c23489726e49b1112ad64665e125. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81486019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5799c52b430c2c3a5a8bf7deb53d6b8f46bc3bf3f3f0895d331f05ce46f5665. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:32:15Z), 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/USHM81486020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e2d50b10f8f22f7175822fc1ccd17a6a3764d0a17d3f1556b3193fbf5da2b7. 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/USHM81486021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd451738bc15e998530e186e03f96b9e389c935feb849e7a2582fcf68e1661a08. 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/USCGH1770053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a3b0df336f8cda0d9b7f591746f5b0b7a97c16451d3ca36f61c09772d41039. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USCGH1770054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894babb43ad3ee36dc75614f1dce63305e68fbb1a4013e0ecb0d7798cace1002. 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/USCGH1770056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ed8ef32ddcb8cd4c661a63d229dd035190ef33bee9a3623fa60394e25b69e5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USCGH1770058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c66e3ab0581a10ba5b884fde340de3e859a69767f1a9f0d614c0fd04b0ad18. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:31:29Z), 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/USCGH1770052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef47a1ce896d5fba21b6acbcfc5efb9fab1c1bacb2d6315abb810ba0018a5486. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:49:59Z), 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/USCGJ1995150.
Lo Que No Va Hacia Adelante Va Hacia Atrás (feat. Zoe Salazar)
Lo Que No Va Hacia Adelante Va Hacia Atrás
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72ca1b167ab46dbf1b5f02bd0373d968334c735e4359d7edec0374584282637. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USCGH2144011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174c4d83126796f3d856c2017debc36780fa132ec040fe8b095bd09a82786189. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USHM82110921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e167430ac749acb761ad7d2b66507b1d7259bc17f5f52d70eff32708c3f7d6b. 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/USL4Q2171270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa4955b3574291e81c271e6f7bc314d6a1f99711a9a2824a73d86b680ad5515. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/USDY42299209.
Dos Misisipís - Ejercicios Multisilábicos, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c637ed8e7ad0050483a8aacbc9ecb15f51aa73d0a726905854461c33e252cb. 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/USUYG1567251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ae31e3de944609281e463b946ad2c919eca1703c090322a405245d342ef09c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:45:24Z), 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/USUYG1572159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52be34485451bde931744f0348a369e00a960528444d6a6de3fdc86eba0909ae. 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/USUYG1580866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ae31e3de944609281e463b946ad2c919eca1703c090322a405245d342ef09c. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/USUYG1572159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c637ed8e7ad0050483a8aacbc9ecb15f51aa73d0a726905854461c33e252cb. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USUYG1567251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765b0ef7b35574faa86861addf056d65b1a60bee60e7cf2d1733af89fe274321. 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/USUYG1580869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978b66806f413cc3914d05cdde478bb53020a52da9e090b8d95f90e754d46ef1. 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/USUYG1580870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a715a558d54cf5a36494b44428aeba943b630f65f9d1410fd36e7fb5ef16375. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USUYG1580881.
AllWays - Ejercicios Multisilábicos, Vol. II (feat. Pelygro KDC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9cac41fb570bcac7bde8ba886805636063a04cb2770600bbd9c456c5986220. 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/USDHM1412141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf897c89e472451f7ab0a0d4bd31f9935b72ed56e95ba551062a41da4eba8176. 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/US7VG1713808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b5283de65816b4a255c822221f91b2d2e93298bc2f1228a61bb112a7615b30. 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/US7VG1706596.
Tankehology Mexamafia: Xx Años de Puro Hardcore Puro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe83ce249ea0b7d888edb3b2a9ee2dafed2ed87d6ffbaa2cf0194c7e231336a2. 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/QZW9N2205494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b9828ca6ab95495d83bd12ff174239f51c3193d069c7fc1377d894859eca5a. 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/QZ5AB1985653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073e0d1cd08fb08ba98e318dd517f2f9ea5c011cb16d057801e3951d888bbe91. 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/QZ5AB1984713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f0ae6a6093facb4564ab4088af7ffece9a3b5eeb1e0bec8292acd969640557. 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/GBLFP2068616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94121d33868f834e546d8f0ba7af474ef18718a66edc2c881711c48d12bf5be. 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/USUYG1049578.