Arturo Márquez Navarro (born 20 December 1950) is a Mexican composer of orchestral music who uses musical forms and styles of his native Mexico and incorporates them into his compositions. His best kn
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 0x7a060a4f810bdbe94471e446a7f549f2c00904ff40796e94b80a23f32700c561. 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/d3f69677-3349-4e04-9a6e-307db81f5489.json and https://artists.proofprofile.net/proofs/artist/d3f69677-3349-4e04-9a6e-307db81f5489.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236887d60efff154ff5e4696481d26802b858b3edf3c01ee8fd094b4dc84866d. 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/DEN960600431.
Nutcracker Suite, Op. 71a, TH. 35: IIc. Danse russe Trépak (Tempo di Trépak, molto vivace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf97fe1b879b89c693d43f948ed8f715df3847d44f9aa4081546faf9076238eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN960801250.
Symphony No. 9 in D Minor - Ed: Leopold Nowak: II. Scherzo. Bewegt, lebhaft - Trio. Schnell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa407699129e2a35ff13f3e6d176f454c95205f6bdd6fb4c38c7de5d71e5b1d6. 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/DEN960803382.
Samson et Dalila, Op. 47, R. 288 / Act III: Bacchanale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e70941dd3d772759e58df4fe4e14e04f5af8fbb587d8bc07ca6e7e190ceac7b. 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/DEN961003660.
Symphony No. 5 in C Sharp Minor: IV. Adagietto (Sehr langsam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c16e4e03ffb4035e45c7a4c11d151ccfecde3f034b74bc6f91165b5dadefafd. 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/DEN960601454.
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 953536 (2026-06-13T17:25:41Z), 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/DEN960800070.
La Noche de los Mayas: II. Noche de Jaranas (Scherzo) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e53108a96e9be355cfa0e202cf49732b6fa7b44edf0a5cd58feb1871372f7b. 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/DEN961000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a7f6aac100b3960665b1ec97c6c665ce26e3107b89839398a8cfa5f5631056. 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/DEN960800100.
"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 957067 (2026-07-21T16:39:14Z), 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/DEN960800090.
Sensemayá - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd348fee7bc4c1d24d0f3f742da1ac29b4c47ffe56290ca797cdbe241ffb78327. 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/DEN960800040.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800030.
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 956349 (2026-07-02T11:34:59Z), 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/DEN960800080.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800070.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800060.
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 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/DEN960800051.
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 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/DEN960800052.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800053.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800054.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800020.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800090.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd40b31aa600b1e2f66346e913d8690aa679b22185bdf356338e97f1fb6856cd. 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/NLY331209132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86617e742fe184e18a35c62ed8c09a350d5e2b6be348a8d707c02ade51054ffd. 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/US23A9914931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2647dc7a7235beb57e985ec5da224c49550fceb1564516ae035508e262aea008. 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/US23A9468882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c2dfb91b343c21de75bdc54abb42a1a32a7660d205c3da86ef328a41771bf8. 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/US23A9914932.
Danzon No. 2 - Live From Walt Disney Concert Hall, Los Angeles / 2010
Rossini: Overtures And Arias / Latin American Favorites (Live From Walt Disney Concert Hall, Los Angeles / 2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36216cff2a530d20b3d9e835370780b8ac104fc31f7ca8514d40d3976f59a933. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN961001440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760af651a76e88a798f9c27809af29fde9fbe60944fa852be16cdd5ac4f10f28. 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/CH6541955514.
Danzón No. 2 (Transcr. Gómez-Tagle for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8166d188303f3755c335e87558ec929e6ee4b90933ead7e02fbeb23a5f266b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN962300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc54999d7a47b9ea86daffb9d4c0383792b5001b772523ebeb426d12e9c6bd. 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/USB8U1047300.
Márquez: Danzón No. 2 (Transcr. Gómez-Tagle for Piano) [Musical Moments]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46c93304f9d70aa7dfc461b5dd609af4c47bd8e407ca3b4a4921077573063f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN962200920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7f1a6b427c0d3eb84d2888534e527e533bd236404b12046768a788948e1c9a. 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/NLC351017504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29528ba86e720082bf0a9ab29098cd35e7d3e0d1544a411c9ec4d6af3994da34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7851500031.