Marciano Cantero (born Horacio Eduardo Cantero Hernández, 25 August 1960 – 8 September 2022) was a Argentine musician. He was the lead singer and bassist of Enanitos Verdes, an Argentine pop/rock band
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 0x0d9670832b32fc6ee5d9aed75e2b15d0520a749febbb3eb1d6b75bd1a71b10b2. 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/f6f11bba-b6ce-41be-83e1-031836c85b12.json and https://artists.proofprofile.net/proofs/artist/f6f11bba-b6ce-41be-83e1-031836c85b12.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 0x04ef7103f52dddec8bda29bc12f244fb5742740dc23c6794f2f97e902f698404. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ARLPW2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13d4f20ad8186c930083793dcf5578dabd019f59b5ae24628ec94c0d441410f. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:23:26Z), 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/ARLPW2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe11f600b739337d089204a4c7f202de340b9e0a1f65010736862eefb20d85dc. 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/ARLPW2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d540c56b7ff06bedc2464ee71feea6c9cd80e2978f0e2505d15ff1335eabe34. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:18:26Z), 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/ARLPW2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d9210e695faba9f160c727840ffb65394bf91556cad199628954c4d66ae804. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:02:41Z), 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/ARLPW2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bdfbb8628bfeffca1d81c737e2de6df3896c012c3e4d5f52eb89b631cd6d84. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARF100200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ddbd91528c5aaed9c1e8a41df06ad15d20a43023c2d09fed170e52444c34b9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ARF100100499.
O Quizás Vos (feat. César "Banana" Pueyrredon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76ad569cef0617e9aed4fc4b10277386d69b5c2206fba111d85fc7bd26d1be5. 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/ARF100200004.
Las Luces del Bar (feat. Javier Calamaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6e7bf97af2d69726344eff799cbdd8dcce695e676dc844ea181d8829a0128c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ARF100200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eafbf1e77f90d73de57d6d1ca5c701e6847998bd7031aa923c410fb85790ade. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ARLPW2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3fefcb6a00a71ae39bcc5c5a82e59e0e0637baec8fabfe196d7d9bc327fab6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARLPW2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf61fc8ddef50569e1fb9e0df6cd5dfefb69346e9e4e17cd1d8e6dfa5c80e80. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ARLPW2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7c50bc85aad153e27711c9d9bf96952424ddff1e9496bb6a97f7b8d484d73b. 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/ARLPW2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a76b1c7a52a9d7a237535d7fdec39933b28ce49427c0b7a589dc6f4d23ef41. 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/USUM71911619.
La Muralla Verde - Versión Sinfónico [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801db044c166eb8b69a1e30784d1dcdbbbddfcf1e2f68c4fa2c97fd9ddd1053e. 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/MXF011500530.
Cuando Pase el Temblor - Versión Sinfónico [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4b216f37ca4f7f7937c69154df383d1d6aef2fb0547d6f7059a8fc3117174a. 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/MXF011500536.
Guitarras Blancas - Rock en Tu Idioma, Eléctrico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c277701308dccc2d75696796a9199f6ca21ff494e7d7f169caf2bcb3d05f92f. 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/MXF012000214.
Nos Siguen Pegando Abajo - Rock en Tu Idioma, Eléctrico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b460046d157be8c714b1ff752fbacc712540b5972a687704e94bb625edfc79. 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/MXF012000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf3d99b1fc41db66a978f20c7800761d5e0e74de4fa76004c8c978d30e6f75. 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/QM4TW1680014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0320ebb7d4e44875d8e3bb768e9370dec13a3fbb74ff2ee5c538e26f1502c75. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QM4TW1680016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6641c087cd61c41ce537b25c51713006cfead23c9de6558641b25f2d7d8d96f3. 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/ARMH72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf3d99b1fc41db66a978f20c7800761d5e0e74de4fa76004c8c978d30e6f75. 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/QM4TW1680014.