Cecil Leonardo Leiva Reyes (Viña del Mar, November 30, 1979) also known as Leo Rey (derived from his second name and maternal surname), is a Chilean singer and former vocalist of the cumbia band La No
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 0x04f909d0aa7618ed795ca332ba2d325c44f5886bc749c60881c4c1459cb6f24b. 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/93b15136-d0a7-486d-b90a-77e56f3017dc.json and https://artists.proofprofile.net/proofs/artist/93b15136-d0a7-486d-b90a-77e56f3017dc.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 0x8a33161a1329e745153226e3aef068248ec71c078d92cac417aab89b7f5b2b86. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CLAB20801578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad60ee4f566ec0be4f23ac4ae084a714490efd9f753b267ae21e5ba08d11e3be. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CLAB20801581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d705675f6fcd3b3731d962f3af610a078b82e112c2160105c1c330aca2dfa5e. 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/CLRR21400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5edbb4cc274950911801065d87fba3238b9e9d6111072a111abb1df445c1c32. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/CLRR21400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa551fe14f5b04089360953adfe883136700a918e9af3ae4aa8c2f241874f71a5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:28Z), 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/CLRR21400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3cfbc2534e2b4f7c083ede47f12ebae89660dbcd0a264f1e00925c8cffe130. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/CLRR21400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d839d22770f6d4b6f5bd20fe134c0c092444315518d35c55207e56cdb93f3f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CLRR21400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2617829cd5ad10c6bd43b4ae019b0ecb3e6de5789fc7ca093dba505a3254ac. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CLRR21400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb25edc7a57fed2bc0fa3a15fb6d8720eaaaef8f73eec6385e394db8d2047e7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CLRR21400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aba1488ecf4b5dcc5bdc51464cbe46d79b2c219df371a056b34f89060f9008. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CLRR21400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cadfec735ddc43da84b803bd748ae66f62fc828c12fa50ce1fb062c413f304. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CLRR21400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d8356ca59443e5a32f05316c8215d38d6d0df883167044fa424b13a03f5522. 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/ARQIH2290481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a97e413d2ef9ee8dc6282d7bbd7e338a90b13ac4262d95f090b47469153990. 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/ARQIH2290482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693c16dd6d80690c6c79c9f3da03b93de6cf4de65ceaae2ad074a987177a5470. 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/QMFME2025456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd8056fb2806aca8408bf2b9857def45fee22e2643c7b12dbb71d80fba10b57. 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/QMFME2025458.
Mix Clásicos / Lástima / Quiero Ser Más Que Tu Amigo / Qué Nadie Se Entere / Quiero Ser Libre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830d04c819dbce3796d24cafc1feb06710e72caf88dc5a987408d4d0ec8b8417. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:22Z), 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/QM3DF2149795.
Mix Clásicos 2 / Como La Lluvia / Y Volar / La Última Vez / Es El Amor / El Ángel de Tu Vida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c7fde258649178346627fa9488fe47d876c59408bc52dfede719c19d72f1d1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARQIH2300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5190681c7e83f96fff27fbfa66444cda3a899e0744ef24b6417876468c5a3fe5. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/US3DF2275463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf642f17b9ee78bfcb402d20739e21d082cbbc62d962da69f30797ffa5a6e6681. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMBZ92460417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ca67251fb7f59d1f75789c7c97bd7efcb1712d6e9aa576dc28134c0e12e2a3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QMBZ92579576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a531b115a28d952902eae002fc01c5cff6cdbf4d3f0742e9ccc4381b2cee31. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMBZ92579566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7723ec1005b95cd25879675b44d3c5a58fd4839525696debf9dcdce51c8ce655. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMBZ92579567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02135f4593dd60bc3da525e6117a26a084c796024b6de1051216fccc3c9b2fa9. 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/QMBZ92579568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301b054b4738e9c6a958bcd8a0fc3fb78d51e5b99a358447deae1cb3f1502fe. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QMBZ92579570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7c0be7ba688361ca83244ff66c3910c13c632d69cbeae2d830d8f80fdf6516. 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/QMBZ92579571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6fe094865a014eb3e8fccd6f2c21caa733db3dbf5d70fb620a99acecefff71. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMBZ92579572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2429e0c083ea24363b432e82a9a77598fd1240122241a6b6d4c6fe2cd044c969. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QMBZ92579573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bf6dc9405adb65714af0c174d0057dc78613e3764457d930874737f419f452. 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/QMBZ92579574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22795820b8d111c4b5bdaf88058484b5e552e1de228da59fba49d97a85ae8766. 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/QMBZ92579575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fc9ee87dfd72048667eb6e435ec3eb8bbeeac8adccbb5b270b066a5d9f1d91. 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/CLLH23603153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fe53a1e6784e124b37640138638ee1793602d9705bfc6dca998645c9fb2aff. 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/QM6N22096269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fc9ee87dfd72048667eb6e435ec3eb8bbeeac8adccbb5b270b066a5d9f1d91. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CLLH23603153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3240c28427883df8c85ac1d67687dadbf2b7e26c9c71295e16d69a7b10d6721. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CLPP22300064.
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 0xe343baa5b51cae3ac1bcf65b38b337accaf6497ab589b416ebbfbe9f25d4639f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM6P42017263.