Antonio José Estévez Aponte (January 3, 1916 – November 26, 1988), was a Venezuelan musician, composer and conductor who was born in Calabozo and died in Caracas. He founded the Central University
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 0xea40c871cdaed2b87088273a4929b915c2db859ce2795b0622164bd8b2d9d497. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e7643ee-2db7-4479-a946-403a807923db.json and https://artists.proofprofile.net/proofs/artist/4e7643ee-2db7-4479-a946-403a807923db.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Sensemayá - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Simón Bolívar Youth Orchestra of Venezuela
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 0xd348fee7bc4c1d24d0f3f742da1ac29b4c47ffe56290ca797cdbe241ffb78327. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800040 — a six-check JSON result.
Margaritena - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ef0f2cb9ddafcfa0c96744c7f8377d22dc50715f324779f1ef7a403ad5bd4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800030 — a six-check JSON result.
Mediodia en el Llano - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a318d9669b60ec2108b62507de000f6b85904d4cfcb0eef4052722b8fbb7e12. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800080 — a six-check JSON result.
Danzón No. 2 - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7111abb3616b4f66b29b0b95fcfaf1cc4406957764ba6bf32ee209133101667. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800070 — a six-check JSON result.
Suite para cuerdas - (Version for Orchestra): Fuga con Pajarillo - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934a16f31d47c6692c4fb88e611bccea15dbd6c51189b1a7aaae13ccd5a7f3b1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800060 — a six-check JSON result.
Estancia / Danzas del Ballet: I. Las tradbajadores agrícolas - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc98dab2e0b7da81094f5ecc70d761b9f7a086dcc13baed2f5e8c686c827c0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800051 — a six-check JSON result.
Estancia / Danzas del Ballet: II. Danza del trigo - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715c5f78bd00509475f246efd89b48cf6f2c9b0b2d8066bba09ca12bace4bf35. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800052 — a six-check JSON result.
Estancia / Danzas del Ballet: III. Los peones de hacienda - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60f374d86ca85b19d97fc2222b6cfc51e52d5101fb4a39ec4b1d841dce989e1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800053 — a six-check JSON result.
Estancia / Danzas del Ballet: IV. Danza final (Malambo) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69b23bb145d8c21ea0cb2b691ef6478138d8f77af0f1acdea8c2c93e0612fc0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800054 — a six-check JSON result.
Santa Cruz de Pacairigua (Suite Sinfónica) - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7fc5645316b50b78128094170f4c034da6eafa1b40b436d420e132f530737d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800020 — a six-check JSON result.
"West Side Story" - Symphonic Dances: IV. Mambo - Live From Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7742cfb7d7cac5e61004ea07074648b5c670304704d04537f519873ceb7da0b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800090 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a7f6aac100b3960665b1ec97c6c665ce26e3107b89839398a8cfa5f5631056. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800100 — a six-check JSON result.
Estévez: 17 Piezas infantiles: No. 12, Angelito negro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa184d5d7d074551b191b0abe58db86622ee18ea8682ab4c81994c5ad9ec8cf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1000892 — a six-check JSON result.
Estévez: 17 Piezas infantiles: No. 1, Ancestro 1. Indian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a8ca71b21f34a3ae514f4e3b7e77b3888b68680d26bb593910f7dac64eb02d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1000893 — a six-check JSON result.
Estévez: 17 Piezas infantiles: No. 2, Ancestro 2. Spanish
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4719019ce4babd4d96d710ab19080caeb669b369b8f8ded6be92a76129fb2e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1000894 — a six-check JSON result.
Estévez: 17 Piezas infantiles: No. 17, Toccatina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c6e74edb72cbbff9d661b5eaa762163726c984f9c358b068d7e0b460ab34ef. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1000895 — a six-check JSON result.