Sur Caribe is a band from Santiago de Cuba. Its director Ricardo Leyva who writes most of the songs, joined in 1987. Discography Con Tó (2002) Caminando (2004) Credenciales (2005) Horizonte Próxi
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 0x30ecbeb19e87039de949ffd093fb1615a2bda2c12dad99ccfd0d5f949326104c. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e42cfaae-b136-4f32-a251-18183d2d9082.json and https://artists.proofprofile.net/proofs/artist/e42cfaae-b136-4f32-a251-18183d2d9082.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 0x3614d214683c5b594d1c212ca71d8a9dfe1ab88f59020b3823eba448fa40f52d. 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/CADC41104008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5dfbbc0a139bd9bd1f6482785f2fa2c063f2f690819800604268de1cc1a58b. 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/CADC41104011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3766f2a1cefe009343b59fbcc4cbca708ea0d7caf34f9cf8d1857cb69f8986bf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CADC41104020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4506fa72bfff571cd7b23b46bad867db62d079661bb514e52009644ac427ea. 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/CADC41104022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf317a5e4e371af128d6244038ba0969a87007377805f6eba635e07c88b0ce9c2. 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/ES5021602731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf1c12c6270e69e1ae2a1ee558eba09a7b2e8dffdbf98780934bd47c4592710. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES5021602734.
Sí (with Omara Portuondo, Juan Formell & Frank Fernández) - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f449a9ea408686907bb27f2dd5b059113853a356c065cf5007c96e1bce35fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5021602736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ca027226d9f2c09bd5b5a8510993c572258bf8d9363d3d6b9053f474b1fa1c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES5021602737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bea5543fd72ba77c2865df18cf9d0e775665ccdb1b3508988b9597a14536a2f. 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/ES5021602739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a5d704adb810482dbbfcaeca982a42eaf5a9f1b856b58379dc9b4124d37982. 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/ES5021602740.
Arrollando por la Ciudad - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0f359af3b08b8689cf44cb3eed9621a5991239c931f448a5beaa1fa32421c2. 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/ES5021602741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36830f8793fed4fefe1e600ceff1cc1f384ad1de29c568ec6931c258d164bc1b. 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/ES5021602743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06135a5e97b8ac3c6463fd3d9c9d672a97c4286c822a8089c1ccf21129dc1ac0. 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/ES5021602744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f280a452466571dffda2c2520e2e52a917bdd33f80a3e07f29a90e3d7d5511. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CUA011914103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b3dc4731099d8a9e25df9bbfa0ca18caad01ba7cc778d31cdf318f2bdbfc0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CUA011914104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4df9bf08dc46f3689c30d8f8ccdd1ef7cb70fbf992231795b4418f11fca97b. 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/CUA011914109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46ddcd43d4bc6e9b63d82bc79662241a4f84b9233c10aa7f6323c88c1853f92. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/CUA011914110.
Nené, el Corazón de Santiago (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96adbca41e5d3228502d07d786b80547c411a16c0d1f366b2f6e81e214e371bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5021601595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fccdae79687267a7373ff2b1a8d45174e82622174334a886db280588c1078c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5021601599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79afcf94406cb5c60d124a1ea9120a210b7e6b98a11ca9f61512e03f6be092cf. 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/ES5021601604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5c170d23bc5caccc2e81788af824a160fe33cddccaa9ca0c3a01d84c25aa1f. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/ES5021601389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0555aee0a93259f246f38d6cf716be360103f03aa0e1f96b07cbb119cd2bfdcc. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ES5021601390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e28a6a4c4ed844144734dea004f523237461aa4641cc89fc664c691b699d507. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES5021601391.
De los Dientes para Afuera - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c652668f9b56527020bcb966d8b3e2059a911c3a1ca93fe6207aa3377aa3db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5021601393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea086b0c79259fda41b251e20e8b3a1ce0e25ca3dfbb8779edc0b324359857b. 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/ES5021601395.
Pacho Alonso, in Memoriam (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b2875d21991bc7da72869deea034ec9cbbb55463690b4fce49250eee23b889. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CUA012401203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b9fa65f8ebe39688d83d98bee58c674e929b9a22e50c37917b93eb8c2ffe1d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CUA012401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4e57c4e8a0a1686ba701e1ac7533d82f3468a89f4ec035a38ca613c44e616e. 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/CUA012401202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96acbc34d535e579b98c5f121a5fb6da52e664f0d0d7554dcd99f23419cb244f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CUA012401200.