Kelvis Ochoa (born 1970) is a Cuban singer, songwriter, and composer. He co-composed the original soundtrack for the film Habana Blues and is a member of the Cuban band Habana Abierta. Ochoa is one of
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 0xf848a9db83ca6d32d6dfa22a498524fe90be1ca7a3da93763cee591e6ca17dc3. 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/64e9f5f9-0e15-43b8-8c26-4b563f17cb4c.json and https://artists.proofprofile.net/proofs/artist/64e9f5f9-0e15-43b8-8c26-4b563f17cb4c.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 0xc99a1b936ecdc11bca3e727cb64f35cc05b7c0b6349d7dd2f8aabd0a61f4d2cb. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/ES5022401314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e2004d98e683544174bf02806d14759a4f67c48646f5e12558e83abdecd97d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES5022401320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f70616d06dd08e09ea2596ee4ca787016e0896d57e03d2469a3a3f2767dfce. 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/QMHUY1455813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe61cff44c020d9fa524652583b9420a75645083f5c80a1e51e53ce34f5c28ec. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMHUY1455814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c81bfaef2a137d825be56fa5284836bcdeabb6f2ad20a2cabe387700a2c4937. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QMHUY1455816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4da44f11404e7996417dd359eff0f9c3e2d0cb45342d9c1b88c520c878192d. 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/QMHUY1455818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413af730e36aeac92fd437bff8fc571f9114ac7facc53cc3dcacc4b6c4e2c55b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QMHUY1455819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2beea84525566e463d7c75e2c0740d0fda34dda2097225690cc1bcaf090960. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QMHUY1455821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b4edbef43c60cb89c91216371a0d6a9f5a3ab121d115522a0d1e669c43c4d7. 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/QMHUY1455822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b04b5433fd903233a5639ca6beb4ca79e820ce14cf45bb94d2b3bdbc631c418. 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/QMHUY1455824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521cd38794eef78a4aad1d50f39b0399b6b7220d7bb6f166a3be263cf6f43bdf. 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/QMHUY1455825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5cbc27a7e6dc3a41ee0050aa79392c52ded4118bc19030af7bbd6e12bf2ec6. 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/ES5701700378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aeab77225910f3132f71a118a0a122391069237f135b65f0414759cdbf4b49. 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/ES5701800947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe12a38c06e81b4928488c618233677b959281cd66a4f26b229801c89205dc5. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ES5701800952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f5921ff44bc0e4768822239997991ac75836b3d42aa4cb5387b2059099f1e8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ES5701800954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0208809c89827e897dfd77b5222ce6b23fdc83e288c1c926e6d3f349e33298. 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/ES5701800955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e0ab4ddb5f9c9d7200c016449a8a55690f92b09e544cc87403eafa1d2b9f0b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/CUA020214940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2a3bf843d12daba585d3cf30ec2791427ea9b40e8b19450fa2f63f7dfbb950. 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/CUA020214941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4c9e0338f2d99f5512dc9cec3513582733c067fb61dc95b19aedd0cee4d0b1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:29:34Z), 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/CUA020214943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff86bd709c79444eafa348b30e70562674401cfd42a28899d2e3bfdb2686504. 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/CUA020214944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d81a842c135ff43ddc4d56588a556d0ee6d5bad1cac73f0d5511a6aa91c5a9. 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/CUA020214947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa415e0eef08f7b6280ffdfdab55860423b772422b2b7f99c74f74b31ae6c1c6. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZNJZ2460268.
Loco Loco (feat. Kelvis Ochoa & Gilberto Santa Rosa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa491d6191f52d7d5705ddbd96accfef797494130d2f0e19b28c5ad24fd25512d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD11900110.
7 Days in Havana: Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfa3546d926f3dc0269636b38e4cd97a8ffa7ae9720658e897c914cb3fb17be. 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/GB2H71200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767e7b9209c75a5fb0d5aa874fd125bc1fcaf742dbf8145d887e49ec1d137ad9. 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/GB2H71200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb8bc6dbd33ad8838a5627bacf2d183c71d4fc3461d078e8d0f2ba0f9dedc0f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CAPF61900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7599434fd51ef72db3c64feb85cc177ca996a9fa7428bcf419e97b306c1ffdd. 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/QZGLS1927221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b1329eb0755d78c1db627719f89b0d7818c21da699cd02c394921a9175b5f8. 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/QZEZZ2100589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf341671915992096c4317397510e113e26df20bfca0eb54aaddce12891cc1189. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USNPD1200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935345dd1c4501035f87a652472474b6d814d17ba7bdedbcee754e2f1b36c7eb. 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/ES71G1722506.