Gilberto Miguel Calderón (April 22, 1931 – February 15, 2009), known professionally as Joe Cuba, was an American conga drummer of Puerto Rican descent who was widely regarded as the "Father of Latin B
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 0xfa2a844291cd7f7a7fb59658971a774d9abc4e33acca5331e5054ac5a54ff5e6. 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/ba4ea556-cd6f-4d4c-9fa0-8c44ad7b19b6.json and https://artists.proofprofile.net/proofs/artist/ba4ea556-cd6f-4d4c-9fa0-8c44ad7b19b6.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 0xed0db57fc14445a6d19db9e677016a901bb44c360ec7a395b9f245ff6d39127d. 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/DEXO52434577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c3b940ecb28854d1ab7b46defb4f64bde8de9b7ab80435d3d44c150f025e07. 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/DEXO52434581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2939d77b8f6b6671023e57596cc56ceb7f6c63e74efe236656eaab2bee0634f. 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/DEXO52434590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da4d9daef4ca118d072ae533462219c1fa90e7a60b54f0578638959b3de5b41. 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/USDBB0606880.
Psychedelic Baby (You're Psychin' Up My Mind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d89842633c5d84d94271ffbbb0815d0f3a029c783b7973be7cb1c3156e577c. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USDBB0605523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa551315b0639250bc1454e3098e3831a28f4f34b5fc505635dd187e310cb8459. 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/USDBB0604500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf455653f821cd88da2c3e094346ad6f9b51b50181add6d4dd52fba62404933a7. 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/USDBB0605088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6877474b444eb7dc958089338bdb3abb2561b7d83c309e9f7c0f74db474563b1. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USDBB0608269.
The Best of Joe Cuba/Lo Mejor de Joe Cuba (Fania Original Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891e5becca8a9154e21e27ad18741b8dfc00fcf74f5fd52f592fb41dd1ade568. 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/USDBB0601400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62d8b0b67a3651bae0072f6e1df765a2abc0c24b34927b688cacf5b4959e98d. 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/USDBB0992272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a73de8c576e2e73ae30c74d5e8ecaaebd0fe8b173eb1a4a5cb05ec0288aee7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USDBB0600770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08409e9d4a1220528b83263150faa68877403d03ab9d60a3c66d787e6097958e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USDBB0900077.
A Man And His Music: El Alcalde del Barrio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33baa07a55268c97d58240cf6ff54045edab4225477ea407d0d483b4d51e4eb. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USDBB0603150.
Wanted Dead or Alive aka Bang! Bang! Push, Push, Push
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf48221f525649b1bf34f133317046e91d728a03b8730175d2654005c834d16. 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/FR6V81374998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502a8cc7f52bc4eb940c4dff1a0b0bb5eed9005565f3fba9971d45521520194. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/FR6V81375002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18b0b3c0fc9ceef5cff0fd3d6d2d9943568c941ba72e583a760617ac26711e0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR6V81375007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bae33bd472d9cf683e341ba17efadc56a025c32575ad297c6d3e55e686f62ef. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FR6V81375009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e81773ee9dd8265a5960ae8d285719199e1ceae2af194af9c65fc24b0a49bbb. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/AUXN22126191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bca3ce7e459510c7d4c79f8eab1b93fd76c657f32e842ce26f6afaaa5b3edc. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/AUXN22126194.
From Boogaloo to Salsa - the Legend of Joe Cuba
Joe Cuba's Endless Summer - Swinging Mambo Classic
Latin After Midnight: Joe Cuba's Boogaloo Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7c586621fbbec5382056c5459c23ffecd64b1905bd1aeb452b5c3d9c60d6c1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/NLHR52233488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d12e5edfea1dc3b7cce2fbd0750e71a7427c19b4b5e7eb1bb4c65c7640718a7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLHR52233489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1719b2152995cfee9ea310ce5da98ea3c2d1520763ceeac29122662ee1e170. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/NLHR52233491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98f5825ad300aa291482b0c953a4d7a72e03b0235292108b308cb401d1aaf8e. 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/NLHR52233492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62feaa27b57d1b9649a97d01d1f6604e250a89949533a9be2e193ea2f1d5f952. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NLHR52233493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83840c478763827675f1a5b6ae604d4412235a58ca4f19f5277da41016706a50. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NLHR52233495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ee23bdfb7c60e03c21f37e222fd0e7514366f87f4789e831c2a8fed59e0911. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/NLHR52233497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc805b300fddb868fb4355c4c263e8ba420c98eab354969f90e49b896c3d6e7c4. 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/US6PD2502193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ef77ba16e1431547e63f7801adbbc9deb19e4c027de5f1eb610fac636d41d1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US6PD2502199.
Funk Fever Vol.2: The Best Of Funk, Soul And Tropical Rare Groove
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e74274818b96bc0b674480a464f38592538c6b11de14a61c2c56b2917ec3b6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDBB0606694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bfc2a1ad108d882bf399d3c1fe143c42b972676456d00b0578304220b38c1a. 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/USDBB0605506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd6beb65e6c0f3629ed021d67b0980ae27ab3d03753bc6729f52f36ca753dc8. 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/FR96X1813958.