Carlos Guastavino (5 April 1912 – 29 October 2000) Some sources wrongly state October 28, 2000 as his death. For example: was an Argentine composer, considered one of the foremost composers of his co
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 0xa2d5ae018836f4a36d2b3b3c085c575ad1c1234f6bd3e0dfdbb2b7d5f379821c. 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/94400b73-98fd-42f3-b57f-00fd1c381123.json and https://artists.proofprofile.net/proofs/artist/94400b73-98fd-42f3-b57f-00fd1c381123.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Asturiana - Songs from Spain and Argentina
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 0x2cc57508c5b356a3f360c5a6911b7e3021d0fd1bcdc68b850528002ac859d6f3. 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/DEB330697501 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77f15f4f4fbf0d75069d96a2ef88d96032e8c3db4bf33dc5f807750a1314106. 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/DEB330697502 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa258ec236f351f2499bec977b5acab0cc1c1db69eb3c0bfabb79b7b1e1e3b1d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEB330697503 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db4a4c10871bde08657ace5ce46183b052a44af2195fcc95fcd71c13c0bfb61. 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/DEB330697504 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7661c8b19026f3fd281b7638fe63cbc5478d6067da70fe90315f93b3caa7e6. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330697505 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7eb2502b51535e2c40ef366972845e67fb2220dbd4fd2eeb10cf1ea7221ae9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330697506 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ef2e3629c9c7fc0b980eeeeef6fbeaa05aa6012ce2410b6d54c0e21ab552ac. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEB330697507 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aad1fdd1bc33c0659522e42cccc017fe0356d0a9fac8e6da94c29edbeb08890. 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/DEB330697508 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43810f9d4224a0ea3ebf0ec3341c3af15857ebd350a22d31cec21bd764fe8267. 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/DEB330697509 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092886aea18a4b4c9a61507d33c7c29ebfc88c663f36e9d2d5cbeeaa18539a3d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330697510 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14d5280c28c282a8b3b47c94c3b905355864c0cc614d20fb76819228557d876. 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/DEB330697511 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7dfd418599cd98a55dbfd91fc33944cdc84461115a847aaba1ee5382a1ac88. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330697512 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa353cf88682a03b89a34fe7416ac7b940e10c18b251e1aafe10ace87ca70c96. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEB330697513 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeddd57c2a517876e3dc5c65579902f2022795792f77ea82a4150785a9498a68. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330697514 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a0653e21d84bbe4e6581110c48f4e643f4432bbfc6cb47a3d7c8f7d2c7634c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEB330697515 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf5d8b1a8fc82c3da43909073661a579b54123e8d72c6e6055b4e8983e9c205. 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/DEB330697516 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f923f241738e5ac0fc397bed157791d867f357b97db16b1b3ba8d4b6a58b2e. 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/DEB330697517 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5edd98e0bd6a450d6dd5411fe0758b8df2fc1971ac13255b1bb32bef9726bf9. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/DEB330697518 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bf9533962fc60335cdd38f9ff19fcb6f8567ed7a678215820259d2faa8aeb4. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330697519 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8702f6fdff90fcf5457cf9e25dd6580b987d2f1e784e5c1b73a743d14fc71ca. 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/DEB330697520 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15a6a56aab1a429fa924553829e6342af8490e2da8e167dcaa4d91c6a7e75a5. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEB330697521 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bef4b288bd3641117e78144271b5189791b3d959dee3748aa0bf15882f4e45f. 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/DEB330697522 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43da19978dfaebca2bd51754d099de6fc6a2995010cfe2ad6b990c4f93147031. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330697523 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aadf1c87c27b279a72bd52c3be2187ea4a2c17ecf6aaa3ba1ca718475e7e43. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DEB330697524 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d77dff49037fbc45896d4b839d0243e2edc756d7f6ed40630aaab5dcc628fe. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330697525 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510af7980b80b24d029e7b6ed765479d8ffad116e856b6527f2993826c990dbc. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEB330697526 — a six-check JSON result.
The Best of Martin Jones: Discover Guastavino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc710cc678fd1fb324c825f1b4d0071e6a8a323f9fc848319c7b504cc0fb1dc53. 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/AR3OQ2000001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6782783c835758c2431fcd365f75aeaabb34bce8b25542af4b9e4d3e0ebd785c. 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/AR3OQ2000004 — a six-check JSON result.
10 Cantilenas Argentinas: III. Jacarandá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01793fb5bd17f89a2933c51935015ec1b688d84fbadbee429d8641df3fc3a2c6. 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/NLY331903973 — a six-check JSON result.
10 Cantilenas Argentinas: V. Abelarda olmos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a5b05b6cfe48b061031a1cb980f4e424f150a4144b5048bf5b33f06735a167. 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/NLY331903975 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3f13f4fa3b9e2728b141277f216a0a688e23959f14eff6d1087297c3424aa9. 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/NLY331903984 — a six-check JSON result.
Flores Argentinas: II. el clavel del aire blanco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3248a1a7a9f41d7c2133520b33f0966a71665c66cafc1b4203a9306eee51f29d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NLY331903994 — a six-check JSON result.
Flores Argentinas: III. Campanilla ¿a dónde vas?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa272d7b1a42261f77415265597568b0ba07e084a7b298e2eed3ec6625b92fc9. 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/NLY331903995 — a six-check JSON result.
Flores Argentinas: V. ¡Que linda la madreselva!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc25ae3b96a872bb06d92dfa8c1afa032580c328ba83aacab53410d83da1c8d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLY331903997 — a six-check JSON result.
Flores Argentinas: VII. las achiras coloradas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a0f48ff0bf924aa84cfdc9c743911388913e0b78e097b9e3df17192c2dd154. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331903999 — a six-check JSON result.
Piano Sonata No. 2 in B-Flat Minor, Op. 36: II. Non allegro - Lento (Version 1931)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a09ab4f08fea9db54ecd0774086c79e419e3067209aa332f6a4707d61fbf23. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ71739716 — a six-check JSON result.
Homage to Guastavino - The Schubert of the Pampas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84e8e960328a8956a4d8dfa8250d6e9f36c4fca285a77b65833cc8fa5e3e06d. 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/FR92Z1000028 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a6ad11e99eb157138aceb1aff697557c9ce91a1eeb256302d2be2dce67bf4d. 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/FR92Z1000029 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482008fc0c250c3ddac5d82a3afa145ad46263b7473322a8b2a9cb7f92b08c55. 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/FR92Z1000030 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79363a2284f6d534f9cf65ce3d3c16a045c3005cf41a51a6f1c732de436d30bd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR92Z1000031 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15574ae1d8e4d369457a9952e8926fce8d5ce1983637edaf09adac0fe7631b8b. 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/FR92Z1000032 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bb302cd233d9be423001f05fcf151826962df33aa39d6c9ecb714a535a7486. 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/FR92Z1000033 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053e09cb85aeb070c7a7fea0bdaf43abfc94319beb72326e75546b17bb2e2895. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR92Z1000034 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb7febc0cc1b78f8cfe74274737e2f980910ebbdaafd1be4fd7c770ebc4a04e. 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/FR92Z1000035 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd417944b8851f92f0726df6e2060711ce613017769e1705f06e64c679d49db6f. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR92Z1000036 — a six-check JSON result.
Sonatine pour piano: Lento muy expresivo
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd010bde4c07f97b5d5ca01ac71d680e34326ba90d32b323b11f8d3981eb49f58. 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/FR92Z1000038 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658b861cbe31f6a4287ea2744f5878e89aaa5fb4222c7faf65028f3a0dc25085. 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/FR92Z1000039 — a six-check JSON result.
Abismo de Sed (Doce Canciones Populares)
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El Sampedrino (Doce Canciones Populares)
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Sonate pour clarinette et piano: Allegro deciso
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Sonate pour clarinette et piano: Andante
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Sonate pour clarinette et piano: Rondo. Allegro spiritoso
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9f4316932aeab0a155606d367cd61e88c576ab1baf7fd789294e441beb67a5. 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/FR92Z1000045 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda13b712772845ea6f5142089c57e9b03880bd86f2c84df18e0d6ce22f8f2828. 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/ARZ021002694 — a six-check JSON result.
Flores Argentinas: Canciones de Carlos Guastavino
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7973580ecae2d88837572dbcd9838192369d2f011111e6b645fb175e9dab88c3. 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/USAB10810655 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667c34869eed151bd2e70bc7882776bbf95ec8f54846cc0d464ebdf8ee1d4f24. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USAB10810656 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e54a36ed33a5a36db65489f17e0b594aade227d60bc5767ec212b1cffff6587. 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/USAB10810657 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb69a275f3663e2dc4f8661d6aed69d17e49c105c3f77b33f471480ee79f9dbe. 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/USAB10810658 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68766f87bb1bce8fcaa686c3f12b3be32e1a91ac508ce5474552179239c17b37. 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/USAB10810659 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36703506c91826fcf4961fcf0695a7305de05bcf0576a6a1aff362ce2473e26. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USAB10810663 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb382fb9fdfe8589865aaeb264ac4a047fffad93e29f634339434f8e5f5a5548. 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/USAB10810664 — a six-check JSON result.
Flores Argentinas: El cavel del aire blanco
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da050582cfaf5305c493822e2b35f7b972ac0f05b93f5bd5a0f800c3e4b148c. 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/USAB10810673 — a six-check JSON result.
Cuatro Canciones Argentinas: Vieniendo de Chilecito
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578d352d4f1a97e1e55d86f0363171bacd2d285e162c7a0a96e161afcdf60a5d. 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/GBAJU0800023 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0971c8279f87bbb6c061d2c3533111a55e1a88c81e0bee445ed2cfceb38d20df. 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/GBAJU0800025 — a six-check JSON result.
Carlos Guastavino: Se Equivocó la Paloma y Otras Canciones
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Carlos Guastavino: La Siesta: III. Sparrows (Gorriones)
Jeromita Linares (Las Presencias No. 6) [Live]
Carlos Guastavino: Se equivocó la paloma
Carlos Guastavino: La Siesta: II. The Weeping Willow
Guastavino: Homenaje al Coro de Niños Cantores de Córdoba
Piano Exam Pieces 2025 & 2026, ABRSM Grade 6
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe360bf2f43f071fb7e8a6b17aed943a3e8ed9a7668a14c6b08d72e075663f31. 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/GBEYQ2456902 — a six-check JSON result.
A:3 Spilleværket (No. 6 from Humoreske-Bagateller, Op. 11)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5e1f572031cc06cddbb74215d01a4a6bc522aa3e0af160afb2266d876862ba. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2456904 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c28193fffe7d03c74fbfa101651d890022c0e46ae2af7121df8caa604001eab. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBEYQ2456905 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200aa737a6866a61c821be249a6a70ca3fc9d17b5084f3a55e3a3870a5ac0a5c. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBEYQ2456906 — a six-check JSON result.
A:7 Allegro (1st movt from Sonata No. 6 in G)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74cb22d973de926b0d0789157c3056fae84af1b918d8e103bab76e7bf030401. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBEYQ2456908 — a six-check JSON result.
A:9 Finale: Allegro molto (4th movt from Sonata in G, Hob. XVI:6)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c665d0ce6c0525fcdef2561d525a102c9193d1a824b48e4725773b2b96a65a. 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/GBEYQ2456910 — a six-check JSON result.
A:11 Village Dance (No. 5 from In the Country, Op. 26)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b57058e61c5b8df6dfb3d09bac4d8f227de422e3179a462919e37477429b8f0. 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/GBEYQ2456912 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfc655a6cbcd55e06a83deb2aaeded8db8eb86cfc45cb5f1554f8b19924467d. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBEYQ2456913 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3594cdd4936c185c530fd2586c8b76b3706a68ab85671c75fd1e7d415ee80c70. 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/GBEYQ2456914 — a six-check JSON result.
A:15 Moment musical in F minor (No. 3 from Moments musicaux, Op. 94, D. 780)
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A:16 Allegro (1st movt from Fantasia No. 1 in D, 1st Dozen, TWV 33:1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a2af4ec56739e9ceef83e97c75b8b3e0de6dbfdf633f56fec5efac7b15f13f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2456916 — a six-check JSON result.
B:1 Bagatelle in F (No. 1 from Two Bagatelles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a547c8acca42eec59be970ba0f1c1771abb26b9e2f27fe9b289401efeb8cfcf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2456917 — a six-check JSON result.
B:2 Poco agitato (No. 9 from 12 esquisses, Op. 47)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b44b319cb60dcda1088b05b168dd22c03cee6067136d58d9b986c890b70e34b. 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/GBEYQ2456919 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3b809d6e3d98bac2e453dadb2a6dd78bc569c90bba8339657829da25453c71. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBEYQ2456920 — a six-check JSON result.
B:5 Interlude (from Interlude et Valse lente, Op. 38)
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B:8 Prayer of the Matador (No. 2 from Lyric Pieces for the Young)
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B:9 Prelude in D flat (No. 1 from 8 Easy Pieces, Op. 43)
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B:10 Cantilena No. 1 'Santa Fe para Ilorar' (from 10 Cantilenas Argentinas)
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B:12 Little Lullaby (4th movt from Suite R-B)
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B:13 There Was a Most Beautiful Lady (No. 3 from Country Pageant)
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B:14 Legend (No. 6 from Pictures of Childhood)
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B:15 Einsame Blumen (No. 3 from Waldscenen, Op. 82)
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B:16 Empty Rooms (from Sam Wedgwood_s Project, Book 1)
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C:1 Stamping Dance (No. 128 from Mikrokosmos)
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C:5 For Stephen Sondheim (No. 3 from 13 Anniversaries)
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C:6 Mr "Satchmo" (from Portraits in Jazz)
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C:7 Galop Final (No. 11 from 11 Children's Pieces, Op. 35)
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C:8 View from a Window (No. 12 from Cool Beans!, Vol. 1)
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C:13 Cortège de sauterelles (No. 7 from Musiques d'enfants, Op. 65)
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C:14 Dancing Barefoot in the Rain (from African Sketches)
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C:16 I wish I knew how it would feel to be free
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Mendelssohn: Piano Trio No. 2 in C Minor, Op. 66, MWV Q33: I. Allegro energico e fuoco
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Rachmaninov: Cello Sonata in G Minor, Op. 19: I. Lento - Allegro moderato
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Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Theme. Andante (Live)
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Mendelssohn: Piano Trio No. 2 in C Minor, Op. 66, MWV Q33: II. Andante espressivo
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Rachmaninov: Cello Sonata in G Minor, Op. 19: II. Allegro scherzando
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Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation I. Andante con moto (Live)
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Mendelssohn: Piano Trio No. 2 in C Minor, Op. 66, MWV Q33: III. Scherzo. Molto allegro quasi presto
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Rachmaninov: Cello Sonata in G Minor, Op. 19: III. Andante
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Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation II. Vivace (Live)
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Mendelssohn: Piano Trio No. 2 in C Minor, Op. 66, MWV Q33: IV. Finale. Allegro appassionato
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Rachmaninov: Cello Sonata in G Minor, Op. 19: IV. Allegro mosso
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Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation III. Con moto (Live)
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Beethoven: Piano Quartets, WoO 36: No. 3 in C Major: I. Allegro vivace (Live)
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Rachmaninov: Suite No. 2 in C Major, Op. 17: I. Introduction. Alla marcia (Live)
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Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation IV. Andante (Live)
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Beethoven: Piano Quartets, WoO 36: No. 3 in C Major: II. Adagio con espressione (Live)
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Rachmaninov: Suite No. 2 in C Major, Op. 17: II. Valse. Presto (Live)
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Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation V. Poco presto (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4449ef6d2515777d053515f034c6497aa75a8498ca1efdb422f7ee907f738f12. 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/GBAYC0502425 — a six-check JSON result.
Beethoven: Piano Quartets, WoO 36: No. 3 in C Major: III. Rondo. Allegro (Live)
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Rachmaninov: Suite No. 2 in C Major, Op. 17: III. Romance. Andantino (Live)
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Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation VI. Vivace (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a694c2d69b88ec24b060f4f973b1944d9e8d15a4d450085a9d7f8e671386de. 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/GBAYC0502426 — a six-check JSON result.
Mozart / Arr. Grieg for Two Pianos: Piano Sonata No. 16 in C Major, K. 545 "Semplice": I. Allegro (Live)
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Rachmaninov: Suite No. 2 in C Major, Op. 17: IV. Tarantella. Presto (Live)
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Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation VII. Grazioso (Live)
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Mozart / Arr. Grieg for Two Pianos: Piano Sonata No. 16 in C Major, K. 545 "Semplice": II. Andante (Live)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ffc1d2de98a50d4ca840526ebe0a8d05851e69076a3e848589c73ff6630d1. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0502416 — a six-check JSON result.
Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation VIII. Poco presto (Live)
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Mozart / Arr. Grieg for Two Pianos: Piano Sonata No. 16 in C Major, K. 545 "Semplice": III. Rondo. Allegretto (Live)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de70b0294f558ea180abde7c1fe10897f571751ba394b619b622d2fcf42e22f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0502417 — a six-check JSON result.
Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Finale. Andante (Live)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c035a7750a301d40ab1d352be94d09740fb0a44a8b962dbdd0f06eecd0cd1a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0502418 — a six-check JSON result.
Brahms: Piano Quintet in F Minor, Op. 34a: I. Allegro non troppo
Lilya Zilberstein/Dora Schwarzberg/Lucy Hall/Nora Romanoff-Schwarzberg/Mark Drobinsky
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Brahms: Piano Quintet in F Minor, Op. 34a: II. Andante, un poco Adagio
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Brahms: Piano Quintet in F Minor, Op. 34a: III. Scherzo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5f025f0836929565d00a8ab8e949a5743c031258541e3c576c9779fe92c7fd. 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/GBAYC0502433 — a six-check JSON result.
Brahms: Piano Quintet in F Minor, Op. 34a: IV. Finale. Poco sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb164e80e8cfb793baa0658e087f30cd6f9f82c79e7d4b202a22c554795d2a47. 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/GBAYC0502434 — a six-check JSON result.
Guastavino: 3 Romances Argentinos: I. Las niñas de Santa Fe (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2270d5ff920e40621a5a396df3657a7983016efc54e9ac2c38c9e91edcb40327. 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/GBAYC0502436 — a six-check JSON result.
Guastavino: 3 Romances Argentinos: II. Muchacho Jujeño (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead3ac206ffcb5d81a47aafcf81000d6ef30d562f1edc472830ea0b2e4425db6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0502437 — a six-check JSON result.
Guastavino: 3 Romances Argentinos: III. Baile en Cuyo (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6196a5e00ff9534ab7f8cabd525bdfe2d42a1d419ea565079adf0787c7ad9ed3. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0502438 — a six-check JSON result.
7 Spanish songs (7 Canciones Sefaradies): No. 1. Abraham Avinu
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7 Spanish songs (7 Canciones Sefaradies): No. 2. Ya viene el cativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71659e1dad2dc425911a615130b33bad1862c10e81c55fd908c0363b85dd11dd. 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/GBCKG0701445 — a six-check JSON result.
7 Spanish songs (7 Canciones Sefaradies): No. 3. En la mar ay una torre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caf0108e7414cafb5233503d5eb9e5b55e2eb4a8bc51e1cc5ed5b50ddc25947. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCKG0701446 — a six-check JSON result.
7 Spanish songs (7 Canciones Sefaradies): No. 4. A la nana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61032a2808a8294b077fd6c912e0f3396b68aaa2b5336d6bd601ecf7200941f. 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/GBCKG0701447 — a six-check JSON result.
7 Spanish songs (7 Canciones Sefaradies): No. 7. Noches, noches …
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed882d6f0127381ce396ab1b8e00b012deedac1092e83b07de6e2bd860b5ec0. 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/GBCKG0701450 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552c1c31b42df839f5236bfbe72dd997dcdd8e2e18c3f5bc343f797339f3f0e4. 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/CA5KR1807039 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ea901ec89891d8310144353d374736061322218794047b483d1af27082f531. 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/CA5KR1807040 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66865ecb08780520aee42bb22a3a62aba2ab6dc664fc9030a63eeb4de3ffa140. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR1807041 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2c67f0d805dc5b8cacdbe7e76f2bb122977dadd0b290f758a288942dd5b400. 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/CA5KR1807042 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b09b59be610f5cb5eac384b4cd1265d285d4b1c395bea2385e389d45bc2443f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1807043 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298fa3a2af9a949dc8ca266a3d7ece8896e3e59d5606c5261e68ad0e4f284fd2. 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/CA5KR1807044 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ada8772249cbffff872ea0952f9746c7555b27e195f36f5f8c572e17c932a8. 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/CA5KR1807045 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e20c49ceade17a86d0ac9ea313beeb98741e01814a17548ab2c1d19bfbc46. 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/CA5KR1807047 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01909858c2b12d7ca19af4fa9916d4284bbdaa49d9160a6129457abb051e1f77. 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/CA5KR1807050 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7989bcc014e449cdfbfac094937034220ed16b0c9219cdfba9b1d18b866de438. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1807051 — a six-check JSON result.
Sonidos de aquel dia (Sounds from That Day)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f918a11ed87d403be5ab20856f45afad33f16b48b5b345c0aca77647099a87. 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/HKI190534002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35828aff92c8de3d1de3e0e0aad8f6de36412474c90b24465db86b68487120cb. 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/HKI190534003 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843ef9ecd907b9fdc94a1ad4cfd57a56d7f707544581eb1c3470528070d8156c. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/HKI190534004 — a six-check JSON result.
Elegia por la muerte de un tanguero (Elegy for the Death of a Tango Player): I. Confuseta (In Confusion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf064fb572b50ed182327605e8e333f9560ea4694383a0b5fb241034cf479439e. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/HKI190534005 — a six-check JSON result.
Elegia por la muerte de un tanguero (Elegy for the Death of a Tango Player): II. En melancolia (In Melancholy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7601cf2188e492ae3b380cc342547070a337185897ceb677c94eb79f34d5744. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/HKI190534006 — a six-check JSON result.
Elegia por la muerte de un tanguero (Elegy for the Death of a Tango Player): III. Epilogo (Epilogue)
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El arte de cebar (The Art of Serving Mate): Mate dulce (Sweet Mate)
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El arte de cebar (The Art of Serving Mate): Mate caliente (Hot Mate)
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Imaginario popular argentino (Popular Argentine Legends): I. Pachamama
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Imaginario popular argentino (Popular Argentine Legends): II. Salamanca
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Imaginario popular argentino (Popular Argentine Legends): III. Coquena
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Imaginario popular argentino (Popular Argentine Legends): IV. Velando al angelito (Holding a Wake for the Little Angel)
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5 Estudios criollos: No. 4. Mal ando (Badly Off)
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Guitar Sonata No. 3: I. Allegro preciso e ritmico
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Clásicos Inolvidables Vol. 5, Música Iberoamericana
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Sonata for Clarinet and Piano: II. Andante
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Sonata for Clarinet and Piano: I. Allegro deciso
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