Hugo Avendaño Espinoza (8 March 1927 – 5 January 1998) was a Mexican singer and actor.“HUGO AVENDAÑO: EL BARITONO MAS BRILLANTES DE MEXICO” Career He was a student of the Faculty of Medicine, UNAM, b
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 0x7f8896c71d4d316170fdda4ddd5b66d5f4183769fdc6c07220624cac2bd2cc16. 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/c61cad9e-0da8-49ca-b638-cbae4ddfafe9.json and https://artists.proofprofile.net/proofs/artist/c61cad9e-0da8-49ca-b638-cbae4ddfafe9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Ultimo Vals, Amor Y Los Nuevos Exitos de Hugo Avendano
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 0x1d5749a601936a5f0d2f23e2dbadf654e2118378c2119e98627fc924a2125a13. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/MXF018900361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4365c0abe88d2f61a46a9b7e497369f79e849ca57fb4c0e3726b36e6324b1f. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/MXF018800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06dc241fd3e2aa6d230de564159b1535c9805d6e8ac20da33852335e8c82d33. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/MXF018800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0f5d5beae3d3658bff7d76a5fa306de877198aae4ebbf1c26f3e5a393427e. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/MXF010101032.
Hugo Avendaño y Orquesta de Chucho Ferrrer
El Último Vals, Amor y los Nuevos Éxitos de Hugo Avendaño
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47f3de02f87026ecfb567226bb093d50575aa8ae931e82fb5df422088decebe. 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/MXF016900514.
Serenata Hugo Avendaño, Acompañado Con el Mariachi Vargas de Tecalitlán
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649fc4cdd7901b3abe954fc3462e9614d04a6c7687120ffd12738f68dd21a26e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/MXF018900362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171d835907ac0689780f1fdcba29dee3bd5ff119cc8d81e1b6f5fff71fd7eaae. 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/MXF010000569.
El Rey de Chocolate (Bombon I) / La Sirenita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bbe87e012872bff8b72ea754f1f03925884e43e7ca9766c19c713a3a6ac30d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/MXF017500348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f37f694eb89307d92155f78edd04215b80ef6cd7cf719f0a29c7cb76a637a. 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/MXF019200338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c46d79e879f091787f18e0495ca59cc8aa8456842a430f66c477e91098b171. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/MXF019200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88055f1e8322f09e7f4481821c19f8169761a5a3bf50efe92cdb97c9315089ca. 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/MXF019600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92b948512d3424000b96b0f86d00ec00f862a837c0ab3763f15c384c2a163dc. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/MXF016500281.
Enlaces Hugo Avendaño y Humberto Cravioto
15 Éxitos a la Manera de Hugo Avendaño (Versiones Originales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cca3240c5f12af622c971a86b70d01e96c785f52a40756987e94b95fb3dfb5. 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/MXF010101022.
Dos Gotas de Agua: Hugo Avendaño y Manuel Bernal
Tesoros de Colección - Las Estrellas de la Hora Azul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171d835907ac0689780f1fdcba29dee3bd5ff119cc8d81e1b6f5fff71fd7eaae. 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/MXF010000569.
Sueño Imposible (Impossible Dream) (with Orquesta de Chucho Ferrer)
RCA 100 Anos De Musica - Segunda Parte ( Grandes Baladas De Los 60s)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9cbc53e018a78b8ca4ea454f054248f70e27c5909ed4a82a9c4b05c30c1335. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/MXF010101023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aaa0d9fc279d5162efd1aafb5fc899e46365596731705bff2f864fceff28ec. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/MXF019600262.