thumb|Santiago Feliú Santiago Vicente Feliú Sierra (March 29, 1962 – February 12, 2014) was a Cuban singer and songwriter. Born in Havana, he became part of the musical movement known as nueva trova,
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ae01dcfa6eb8eb6c183935dedd2def1e9af7557e2247a6179409c048618ef7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e367b4f8-ceee-4ed9-8144-1ecfe57987d9.json and https://artists.proofprofile.net/proofs/artist/e367b4f8-ceee-4ed9-8144-1ecfe57987d9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f777a372a7caa21f29ac0ff837f659b6eb8deb2cb9c23ab00e01aa2ea9ce36. 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/ES71G1412486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528c1c76e438382a52e746b3a46d7bf5ebbe92c5b5545ea01eef30617b93970. 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/ESAAI0156279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abf2adda32b7eab1868b7b2c4c2dcf9998ea607f58cd6a36443afb86ddc4033. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:24Z), 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/ESAAI0156693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc53f7838e988c9722ad21bf2115190c360059753e1a9449f152997f67de6a. 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/ESAAI0197664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7154b6bd5314d1c2a7fdb58ed7d51c4c9b47f6cbb2743c842743ea9ed76676. 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/ESAAI0197670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52239d158676599caf84f3054b1932d7a6a6babb1d861dd81d2a4549f3c24305. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/CUA012000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71992728818471f4a8a950c63def91426804a077b0f0f2e03f350b4c74a24640. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/CUA012000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfe284f85d756916ac5e3a6c703c8de4c5fd1d9bd9a967ab1f11f2a7a5e1d0d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CUA012000606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a3414428d0f298bc562d8b2813e5282cc301c3246829f6594b4c9c650fff36. 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/CUA012000618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1803bf1796585e744e8ea90216a72687d3377f93c3bbc6dd9603f8ef6b401c67. 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/ES5300714008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e06861933ca16d27a7ae691a55edcbc3a57b886e33a8b3c4792cc7e2693808. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA031424036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c812ba379e598ed806879fd7a12686591c92e938455566a03a70dc96df122b6. 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/AR8L71402583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce29087a6009044b87ae45d6817e85a3f5dfa41fe597026eec9ac2406ffb565a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARG991011018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3cfe9a33e66ca3a41cf85aa9ea35ff4d11853f15f6e017f15227f4154fb51d. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ES6100678282.
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
No Olvides Que una Vez Tú Fuiste Sol (with Santiago Feliú) - Remasterizado
Este Árbol Que Sembramos (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe999072adea559bbd78335db801bce2a2c881e3def559dac20049bd1dc78cc7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES5021602511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451a48e233d3f2ee52ff75a60f9ae034684ff6573163e0f1829b452798d81e07. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ES6100678067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b197189b5b00632979b6899f759466d03a8704bdbead5402c2216452f30486. 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/ARG991011011.