Cuarteto Latinoamericano is a string quartet from Mexico. Since its founding in 1981, the quartet has toured in Europe, The Americas, Israel, China, Japan, and New Zealand. They have premiered over 10
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 0xb3ee6fd3232ea1927df6dabce68ff24b5cd018955342397e8a7608524d5f1694. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0141382-d400-4376-ba37-25d84c374803.json and https://artists.proofprofile.net/proofs/artist/b0141382-d400-4376-ba37-25d84c374803.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Chavez, C.: String Quartets Nos. 1-3 / Invencion Ii
Ortiz: Baalkah / Altar De Muertos / 6 Piezas Para Violeta
String Quartet No. 2, "Reflejos de la noche"
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 0x5e4bc479dc9f410f7eae4adcfedc8d4e21e82d053ee9cbfef50c185d6ace2a1c. 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/GBJZY0900028 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9738e35814d36b73daba5b0615d53ca330ce22496cdada80863d728815cede. 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/ES71G2018052 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76997ed0b6e009e169ba7c863f44e8d64215665c23dd66312d0e200af01b0dfc. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2018053 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bf511d51e832926139cfe1f574a1a4c1c1c4bbb6b836d5049946afb3632abf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2018054 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99294f8ef6913a17c2523df9bc5aa8e1dce7b94906154c87f943935fc2673b64. 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/ES71G2018055 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4e0fa2685b41aa10fee2a64db175ce2bbac8f4189f0192eed27c216d75cef2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2018056 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c7f15317f1c4300e6259898224a52222970e8acd69fe3add88ac4b66d17a3e. 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/ES71G2018057 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820c943b73c8b18cdb8e5cf15f12109f806f9d2a1b2003e5f44ffbd92131ab00. 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/ES71G2018058 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4182048d1d3af7fe92c3d36380f9e50c911110b4d1ce599e4c8dbc1c350f70. 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/ES71G2018059 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764210d995a4894e5569a3666b1cd7f18fae5281a19963a800458c619752937f. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2018061 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ab4182670edaee6ce4fb7a5df76c96e4e6c65fb390abce9ac1057b7d63dd0a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ES71G2018060 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e0f10a11c96ab4e809dde381742aaf17f7b4e4c1af1b75da014cbad4b5b7f. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/TCACL1506871 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2001cfb8a7177fad2b2fad98e31332da03be776b40c1ae16d04b44212c11a4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCACL1506877 — a six-check JSON result.
String Quartet No. 1 in G Major: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399d6de97b866ce24847ccca0fcbb636b5f66658e8885aad3e4ecbff46401649. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC61518501 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a29ade078d384410c7a12bbffff2f9b4c82cc345b95e0734c5d09dc1a33625. 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/USKC61113005 — a six-check JSON result.
String Quartet No. 1, Op. 20: I. Allegro violento ed agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecfd1f0ca7513bac5b8c43466a181356ad430ec2c315b3fe3b108264d13aa85. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330901084 — a six-check JSON result.
Villa-Lobos, H.: The Complete String Quartets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffeded24ae3a4bb90d8e078ce852c91b431a7e9deac22944e8b032d9b2101e7. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USKC60910135 — a six-check JSON result.
String Quartet No. 3: I. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2012830493e70c87e95320244a91eb9af31f4915765ac7facf709a288a73c45. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USKC60910149 — a six-check JSON result.
String Quartet No. 5: I. Poco Andantino - Un poco vivo - Tempo Primo - Lento - Allegro vivace - Vivo - Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8660de1ce5e5d8b600f4b2c2f29fcb024f2fe2ff0308ab7c0145e86bf4ee98e6. 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/USKC60910181 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9348896bff59a45ee719b0597840ca9ba079ad396ef747f8dec9d5734eeb79. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USKC60910136 — a six-check JSON result.
String Quartet No. 3: II. Scherzo 'picopas': Molto vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd992bf0b4e449c880a7571f6f0714bc587f57d04020030dd9a028e075077ca. 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/USKC60910150 — a six-check JSON result.
String Quartet No. 6: III. Andante, quasi adagio - Lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7dfd026e1547f4333600553ca6695ba9a3185a4aae1e8bef1ffdb01e050721. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USKC60910137 — a six-check JSON result.
String Quartet No. 3: III. Molto adagio - Largo - Agitato lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb505c7000b3ea30e7f48c9a1215c6424da28b1a967962ab06e292cad04b599e. 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/USKC60910151 — a six-check JSON result.
String Quartet No. 6: IV. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3851f8832c1baae57ef393b56f3415b989e2c0c02e4d26ddd4a89b86e882d2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USKC60910138 — a six-check JSON result.
String Quartet No. 3: IV. Allegro con fuocco - Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630528b2c88240782ea54b5ed179a71cca568f690e19115b42257e841f832541. 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/USKC60910152 — a six-check JSON result.
String Quartet No. 1: I. Cantilena: Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdee1e194899535835bc3618c8ee038190c8b4bf7755c6d64b8d6df8e4da825. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60910139 — a six-check JSON result.
String Quartet No. 1: II. Brincadeira (Joke): Allegretto scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fff528f388f3ce8a9cce20523b1ae06be1ac0d78169a3d5696449e0b50aa6b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USKC60910140 — a six-check JSON result.
String Quartet No. 1: III. Canto lirico: Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a34ad4af294380b4dd239a0b809cb54fd3f96542539bd57fc943593c908d7c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USKC60910141 — a six-check JSON result.
String Quartet No. 1: IV. Canzoneta: Andantino quasi allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45edb7842d237413d37f12f860dcb063cc2e15e0ff900e4b459a660b80a6bb0a. 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/USKC60910142 — a six-check JSON result.
String Quartet No. 1: V. Melancolia: Lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2105d8b098264c860022473050597012a8aa606cd3e57714b5a62d53c5b35e25. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USKC60910143 — a six-check JSON result.
String Quartet No. 1: VI. Saltando como um saci (Jumping like a jumping bean): Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5693856f44c74329fbc178dc6d3d09b4405fd6af3f51f93fd932ef3d00465640. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60910144 — a six-check JSON result.
String Quartet No. 17: I. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd27cbb7e6c4cac099ec6b3131bdb001e05997641365547459549cecea210ad. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60910145 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c402ad2beca4def9b49e84e13f223cf05ae40b1d467834fc206882eac0a198. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60910146 — a six-check JSON result.
Ponce, M.M.: String Quartet / String Trio / Sonata for Violin and Viola / Petite Suite Dans Le Style Ancient / Miniatures
Petite suite dans le style ancien: III. Air: Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e4b1f0d6140b647bdeb16a49cd4dea92f2386aa43624e802b9009cf76ecb28. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF580702180 — a six-check JSON result.
Crumb: Black Angels & Music for a Summer Evening "Makrokosmos III"
Music for a Summer Evening "Makrokosmos III": I. Nocturnal Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93a20f6a0236c2c88caaf6b542a9479be0dd30c7011dc3310e17ad0a432c41f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US4BP0617001 — a six-check JSON result.
Music for a Summer Evening "Makrokosmos III": III. The Advent
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e41b3f9c6f76c0ad5f8dc0219bb4496856c7ef9fac6ad67296d36fa0f840947. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4BP0617003 — a six-check JSON result.
Music for a Summer Evening "Makrokosmos III": V. Music of the Starry Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37f067daef662966ef3a18683123b9bbcf202129efffc54315c89a6fcc63ad. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US4BP0617005 — a six-check JSON result.
Black Angels, 13 Images from the Dark Land, Pt. 1 "Departure" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 1, Threnody I. Night of the Electric Insects
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76372a4ce14dccd689bd4eef40dacd52a2456aba9b0ecc4cee9a7f63ff90bbc1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4BP0617006 — a six-check JSON result.
Black Angels, 13 Images from the Dark Land, Pt. 1 "Departure" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 2, Sounds of Bones & Flutes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09c77ca478c4129880ed14929771f28e1ebf3c8ca4a1cdd925b209a477535ce. 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/US4BP0617007 — a six-check JSON result.
Black Angels, 13 Images from the Dark Land, Pt. 1 "Departure" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 3, Lost Bells
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee1d2b593539c3a10aa469fef5bbde78e47a8f2e8f9c3e1dd8068b606da1e91. 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/US4BP0617008 — a six-check JSON result.
Black Angels, 13 Images from the Dark Land, Pt. 1 "Departure" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 4, Devil-music
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Black Angels, 13 Images from the Dark Land, Pt. 1 "Departure" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 5, Danse macabre
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Black Angels, 13 Images from the Dark Land, Pt. 2 "Absence" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 6, Pavana Lachrymae
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Black Angels, 13 Images from the Dark Land, Pt. 2 "Absence" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 7, Threnody II. Black Angels!
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Black Angels, 13 Images from the Dark Land, Pt. 2 "Absence" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 8, Sarabanda de la Muerte Oscura
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Black Angels, 13 Images from the Dark Land, Pt. 2 "Absence" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 9, Lost Bells
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Black Angels, 13 Images from the Dark Land, Pt. 3 "Return" (Arr. J.P. Izquierdo for String Quartet & Orchestra): No. 10, God-music
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Turina, J.: String Quartet No. 1 / Debussy, C.: String Quartet, Op. 10
Villa-Lobos, H.: String Quartets, Vol. 6 - Nos. 4, 9, 11
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Villa-Lobos, H.: String Quartets, Vol. 1 - Nos. 1, 6, 17