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 0x14fe5ab52af211d28d13c9ce4a37c2a6f900f5c19608083a6e2b02e8aa9d66b7. 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/0707107f-44d8-42de-b0fd-53ccf83279fb.json and https://artists.proofprofile.net/proofs/artist/0707107f-44d8-42de-b0fd-53ccf83279fb.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 0x0d8daf3306a7bf5a093cc2887a75d62996cba2b1946472a5a3a082de6f285103. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZ5AB2429478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd546420d6517304db4dc48eae24c67846b71dd6d02b43a0e05b34df5d8144a3. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZ5AB2429482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf9aa14e0987a6bc33074bd9d4775c8584c29f77163802d06d0c039981f005b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZ5AB2429484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d60088f5ada8ceea918c46b178842a631ca52ae9f0bdcc249fee85fd1edf46. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZ5AB2429263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254b35e66b47fc493e87c9340a6e78b3a3116639bd40136b1bcc1dfa0d3d02d5. 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/QZ5AB2429266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aea9dcf7ac40de62672dfe1a2270900995af807f9d828976d484598acf84f2. 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/QZ5AB2429268.
Lo Mejor del Tecnomerengue - Miguel Moly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3384e37ca9b7c3000434ce14546b050ae7f1769f60192e2204bceae03976b4f3. 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/QZ5AB2460954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf555224c838ff9e9fcad3d77173d82e0e9d6825b8c89e7934dcb4379994f375. 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/US3SK0900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68079148d5d1b622585f5fdbb4795bf63abaabd2ad36aaf2d1a68b3c8c014796. 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/COF019900803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dd3f1c187df06c9d6419ac628a9b61d0dffe7062d296ecffa42db4ed26dd82. 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/COF019900808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fc0bbc704d30fd152d741f834208a983a0d61045d41d8c40a6968b221149f2. 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/COF019900815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382562e4afae38f55abfa740132560448eae8e3175600d645c7c26c25ee7bc6b. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/COF019900807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedeccc2004839ec7e81a5ca17735988af1d6aab134b14bf87af52e2dd2cea93. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/COF019900805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d3aa3f374b8d3c9100d158d97dfa27f96dd549af7ed4ac07bf2beaddb82b20. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COF019900806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9676ea58699e488c5ffd5b40b00793f6df37a46a6bf60cd373be6cd8fe17496d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/COF019900804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a287989a3174801f8cb8717d4a735044184a6f1c482628d9793a0b16a397828. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/COF019900800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa238ebf5f6cd57c804b98202b0dce53e34f0f233e4ea475ac8d079180c135e44. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/COF019900798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea47973a1f72138d8073b5f5e10473acb15b86b715e2ea193f620c64a55248. 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/COF019900801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf920f284d130d8840de5ebce066db2152830d2531c3c06761d2304f5ac70b665. 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/COF019900799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ed0bdcb3ac18ed84ac383ddbfe194dfa503afa605374412a2d21f21acfaa5a. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/COF019900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0113ce57d018b079a7b54009fe3300e4192b0f6299293ca1ffcfbc301882a7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/COF019900809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0397083e6eb3d30166fd5987185c3524a9b72d4485584b5ffbd6e29d0e4b4a2d. 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/COF019900810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d1ce326603bd77b2afae10ec0e7692ba9abb260bd3790d46836d7b376d90f9. 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/QMFMF1525079.
Mosaico: Merecumbe / Cayetano Baila Bembe / Dolores / La Rigola / Apagame la Vela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb271df13d4222e1035c5ec19e322654f8ddd739f4cd30ebedbc64a438a07bc7. 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/QZ5AB2485109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78acdfe5e21a98bcd6f422addd41d71fedfff985d9342cf1b1bad70e9f77f8e6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZ5AB2485123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e488e17b1cc2def1f7e104329297990f5c15272b4c8493828c28a4b3680c72a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZ5AB2460549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3006af2ff48b9222ee963fd95d08d2244800bc74777588034952897e20a8c8. 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/QZ5AB2460550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0abe2575284de5180532b77c0185c9b0b2496efb5857d9d0afdf0c6aad8a83a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZ5AB2460557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe957deaae9b27cb035ad0b3a77d54b0c72f5f0e1305dd5c41004cb8ca1f5ece3. 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/QZNJZ2400821.
Mix: Junto a Tu Corazón/Siempre Siempre/Dulcemente Bella/Ya Lo Había Vivido/Mamita Mía /Quiéreme/Yo por Ti/La Morena/Te Lloré/En Algún Rincón de Mi Alma/La Piernona/La Catira/Pepas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e488e17b1cc2def1f7e104329297990f5c15272b4c8493828c28a4b3680c72a. 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/QZ5AB2460549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3006af2ff48b9222ee963fd95d08d2244800bc74777588034952897e20a8c8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZ5AB2460550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fcd9d4eebf6e862103ced930ed576d7350ac54d568c1e790d40edb0b53d909. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92540434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2519f9949890591b36d5b097170831bc56b31c0c3f170ec7f89114077c00d258. 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/QZNJY2590793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319456caba155845faa855234aa301a3ed0f921654c85d9076b2bb760cbc6c78. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US39N2304255.