Roberto Parra Mateo (born 6 April 1976 in Socuéllamos, Ciudad Real) is a Spanish middle distance runner. He specialized in the 800 and 1500 metres events. He was municipal councillor in his native to
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 0x2282080c2f95aa4e74a00be07bd3c5963e4564891b1f2d2367facb05a07fc4b5. 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/f22a4013-e108-4718-b043-2ba965203fe4.json and https://artists.proofprofile.net/proofs/artist/f22a4013-e108-4718-b043-2ba965203fe4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Las Cuecas De Roberto Parra (Remastered)
La Vida Que Yo He Pasado / El Chute Alberto / Ya Se Fue El Mes de Agosto
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 0x8714d6127dcce08d3c9b67c9e1615e3c9034ed9dfe4cb8e280ec6fc74571a7be. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/CLUM71901429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037a5b30b7422afe4b2abedad8efb43f40676348717e9a2e2359df72718e7dde. 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/CLUM71901431.
Me Sacan Por La Ventana / Tirando La Manga / El Chirimoyo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19543b0bc652518d1936ef2d05fea90296b954e1329d3fefdce5cbf138a133a. 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/CLUM71901434.
El Arrepentido / En Capilla / En El Banquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37053a0f785f8a18f3559986b4523f371eb9c22cb6c2f4ca1f6395421b104286. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/CLUM71901430.
Una Perra Con Un Perro / Ya Me Voy D'espalda El Loro / Detrás De Las Torpederas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c884f8b466d18f6b7591cf1583577d2fb3c4b84a2b473e79e8191728adbb8c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/CLUM71901529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3838a5b77ab0ca4c0dae3535e2a96d18ca246f3732dcc0ed91445982fe58c44a. 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/QMFMF1386722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1870c9d1b60c1da3a2dd752b49ae64255378f599f3aeaec226451b0435cf5d20. 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/QMFMF1386723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf32fa18554f0211194b5648a12f868ed036d4129c6fcefaa61ece593a29a26f. 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/QMFMF1386724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5dd459410efa26f206f7e7231818135788f4e2d8c465cb8456eba088f59147. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QMFMF1386725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a07fa7b95691a218dee267c749c2cdcf2f84625d140b5283ba5a2ccdfd9229. 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/QMFMF1386726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec46535a6188901594167c12c071ab343cf8a08191d466ac3b36767375da81a. 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/QMFMF1386727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ecef648af33e319547047baee41e8330633cd6d8da39458c2d90218d2b78b. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QMFMF1386728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca3cac4a76b766373163480b5e725a62792f6ab63de581017c9f60dd2241394. 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/QMFMF1386729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e127527696c12705e6589e09e827284d66b35d96f63f070e1bcc59481ca6c91. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QMFMF1386730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad9eeff7bfec0b2b52ccbaf8f027989f78afa09ff893e238580bc9e86e94a36. 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/QMFMF1386731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82daf086c938180c7026af6d9f40384d66627a9a6c1086bc64447b577d49b5b6. 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/QMFMF1386732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e60968ea78636f6062865bb7fc38598a70f83e45c9cc1891d65ab8993b35d0. 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/QMFMF1386733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b274eab5140e8ceae3271cbaca1952d74e705f9658016e14ff97c802387278. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USV351322490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5e9b99bc2eca1fccadfdb3133cc96d5a2c4ef6721c73273b99b540e911857. 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/USV351322491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd63ecf68e0bcfdf5992dcb0942fcd6b436724ba39d7a6864fbdfbba2d86dbf. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USV351322492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc1eb21e476ccda4edd4de65666e997461c967bcb07b6f15e1e6b281f1ddca1. 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/USV351322493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fbda26cf2f83497fcd423442052bde2b43946fc2ed7ad8e142dbe34b10218b. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USV351322494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f962a92d348f1bdb5fe6ef988f7e0ac560eb834e7b5a0a5a4b5fe6e913a2ae2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USV351322495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87b72e8fb8380a6a2bd9a1a88c20e2556174fc7bfe5a34f4991c2290ab1e9a2. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/USV351322496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b84a1c05ccc957b492afdb23387ead1fadcb9c10811b7bcf577220e5d8db15. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USV351322497.
El Chute Alberto/Las Gatas Con Permanente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409ac5431e605a74839742a1973017fc04f9f7f22d6d2de4dcdcb36e903b367. 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/DEUD92376610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782c9cee22d9cef66fdd973d71586ecdea02c0db092593670342b4a62286a2e1. 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/DEUD92376649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9488b8b97b2a51f859933e74ed00f5999826753a85b4b3d92854cfc174a533. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEUD92376651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac8c0e253cdcb1a041fe2cacf817744d0939eb90bd8fca6501e69294399cbb3. 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/DEUD92376652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e92133d129acbd827c4f558b118c9d3c838b931f5584a9a8da7fd0165483e85. 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/DEUD92376657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a633e3a92e5b78a2c7ead17d0ba9154c2ae5e082041ceb65a20d1a1f718bfc. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEUD92376658.