Francisco Guerau (1649–1722) was a Spanish Baroque composer. After being born on Mallorca, he entered the singing school at the Royal College in Madrid in 1659, becoming a member of the Royal Chapel a
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 0xfbb2e0feb4bb883e5862baf121f1e5bedb183bfba198a67aab9bb5f93ed06e62. Chain 2 (Bitcoin): anchored in block 953846 (2026-06-15T22:48:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00a47314-e279-470f-b901-c632727df6c8.json and https://artists.proofprofile.net/proofs/artist/00a47314-e279-470f-b901-c632727df6c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x45e1d96c9415ee3fbbd54aedc62720b3e6bb016eb841a2c914569acdc46f3f12. 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/FRZ130400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a277b57ca94f22f60274bde4b3617116c5fff6ac608d1060445f2504a426854. 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/FRZ130400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45439072813b6838acade40c57f381b4de9864c12acab3f1bbee1b8410a6c2eb. 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/FR47Q0702490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62ae1ed63aa3db20b409f915372f156af469ef5d3a39250f6cca88eca4909f5. 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/FRZ139503990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e7fbcb5865543b924e10bfa44a11bae9234303b56ce4d9a92a3aa7b83a20c1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139900171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e5ae3a0e6848b91ac23f08ad1df30ae90dccfa2ef305c7b85034921f70f705. 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/FR47Q0702540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fee290ef11a01d4038ad117640cae023e671c63e52e643a7d8f55dcde3099c6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR47Q0702550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a192207ac1c9d7ecbe3f443cd59b8ca12bb6257e6edeae72a259c39ab68135a. 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/FRZ139400097.
El imposible mayor en amor le vence amor: Y, pues consentir no debo (Recitado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb88f74840663749171fb5c263c8e56dad57909dde26b01825ec01f1171a2fb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE471900003.
El imposible mayor en amor le vence amor: Yo hermosísima Ninfa (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d59e12299e908cd5bbda56007500078718b7bc9635b921a706b32b7bbed345. 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/DEE471900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479ab097f1c01b0fe31bab37652ec8e583ea16d3f5aa7aa329bedd1a32a6df3c. 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/DEE471900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cd966f309811f16efe9538984ec4d1d1cce0b9c9b10602ed1156ea26267fd5. 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/DEE471900012.
Amor aumenta el valor: Adiós, prenda de mi amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31947867386cff518ad351c53b149f67e0717def317b3c5fd806de773d3dacbc. 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/DEE471900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f97a0a1c7976c65289123f2c33b8ce712096562ee66a16a86830f0ee90adbc7. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE471900002.
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 0x9c4381d1e1379430abd83cea84c001d7d93892556434710dc07e84ff5b14b8d1. 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/ES7891902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d3f569756566f9414e51b6f42e379959971d4eb4c5e8c63ba7bdf887e93d0. 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/ES7899800101.
Panorama de la guitare. A World of Classical Guitar Music
The Essentials: Classical Guitar, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28251be476c9893ad2846019fadf393a18f234e1ff5694d01ec878c72566ca97. 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/USB8U1601608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d192dba4ceacd323b8b8a07019164ec490546231424fb1a9c202eaa03f63e7. 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/USB8U1601645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48119b09e3b33d659ad9500ed8dcf5060697945b7ce87efaf206e8150a401218. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139504210.
Guerau: Poema Harmónico (Compuesto de Varias Cifras por el Temple de la Guitarra Española)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6259f2144b66022cdd3ca80b413f47f569007dc339a0528e0e0f40e59d10101. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500017.
Introduction et variations sur l'air Malbrough, Op. 28
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d8d84a05d0e2f47d98464594ca5aa4b9774545ea09c3b9bc2b224213a00d56. 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/ES7141500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68a2b47c81b50aa1df6d03b245957c3b7b890f04d7f5c196457d76776bd4ee6. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/ES7141500027.
Spanish Music of the Golden Age, 1600-1700
Rujero – Paradetas – Folias – Pabana – Vacas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329d4919a322efafbed0dd8667abf041dc230719c30526202c23482787fbdd12. 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/GBAJY8932701.
Guerau & Marín: Entre el cielo y el infierno
Music in the Time of Velázquez: Songs & Instrumental Pieces from 17th-Century Spain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12418fa7dd0cbbb7aba5e5f913451ed06dca171126a5248be8f4131170accd1. 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/ES7899300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070e908e4f9e57693ca9b0a2e87837ba064c81a31ee6ee82508f627b5e165d59. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7899300108.
Durme, Durme ijiko de madre (Arr. for 2 Voices & Chamber Ensemble by Victoria Couper, Ignacio Lusardi Monteverde & Lux Musicae London)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48e448c0cb86d8237af81f87f982d8df1f0e5f4b49d1c5836cdcee5537fdcf3. 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/GBSLT2415701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdd8e8a4c5330770d456f72f62feddc9982f9ca9ec053d4a7e9ccbac1943ffb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSLT2415703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2430072aad872a62271b9f3eebe8a3a682e2fc9bc1d3a62f79cdaa58ae562703. 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/ES29G1904201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb716eba65bc05d553009555b6bbef6a61716b540876148ffc03686d0824ee4db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES29G1904202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda690e60d967be4474179d187018310c9b065c0f4b8da13c1c19e84d9a7ca389. 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/ES29G1904209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7e0d4c2fd948f1b7103d6216783d4b06060cab97e9a5d16fdc41af8b92b53a. 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/ES29G1904211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b80a3055e6ec332afe95ffaa2dabbd668b384cb3807e250e0b1845cbf6dbda0. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ES29G1904213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc111cfba04b19644857a48574934ebc04d5785df1386ac602c13105bff8816dc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES29G1904206.
Marionas : Guitar Music of Francisco Guerau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cb5c57da44f32dbf52f4a44376db6684ece96106496dac8bd546532543b3c6. 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/GBEBL0704602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f5a76bd359261aed797b159efa382d5243094b8ea24a4baa24022bd15d2c94. 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/GBEBL0704607.
The Essential Julian Bream [International Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ad661c1bea346662ad8e64740bb205b8dce1417e7949b226226568a36d09f4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC17300371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c0d9668768be254c8befba37cb25453bdeb39072f675c3d9cfdc3bf9ba4c6a. 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/USBC10507614.
Noches de España - Romantic Guitar Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4446aec9ba3fece58fbd31e8356805c868db95c86c21a278456466c2c0c322e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509306801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c46e1faa9e746534d84243fd777998c9be6a3a2168462b4f443c78d5c6b5b5. 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/NLA509306802.
Fantasìa que contrahaze la harpa en la manera de Ludovico (Transcr. Romero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff3c4767208f57c93f48753574feb4676d1cae055b0cd1f3b07cc0938c178c. 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/NLA509306805.
Bream Collection Vol. 9 - Baroque Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec76a93708b46a459283370844649d02d0f1f6fcf221ade739e27b0d9f38287. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19606367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccbce1770b51d5c4c608effc479578c9b84487d4db2f74341d792310c48bb02. 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/USBC16500316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe819b46a057290f57803e5bf6d395b6d493223d98df5f422a5342a3ebae767e1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC16500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82ecfdbbd4b6fc384979d3419498aa22964029492ebce0363cf81b420b27a63. 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/USBC16500325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e94eba6a21b372d5e41c6b45d29df287ef2c391c40bb21af6e0a4d801e97827. 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/USBC18300209.
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Villa-Lobos, Barroso & Others: Works for Guitar
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12 Études, W235 (Excerpts): No. 11 in E Minor
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Suite española, Op. 47: Asturias (Leyenda)
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Chamber Music (17Th Century Spain) - Marin, J. / Ruiz De Ribayaz / Guerau, F. / Hidalgo, J. / Sanz, G.
Guitar Recital: Moreno, Jose Miguel - Narvaez, L. / Lopez / Milan, L. / Mudarra, A. / Murcia, S. / Guerau, F. / Sanz, G. / Sor, F.
Amoroso pensamiento: Spanish Music of the Golden Age (17th Century)
Guitar Fantasy in Spain and Italy Vol. 2
Gaspar Sanz: Tañidos. Música Española para Guitarra Barroca (Vol. 2)
Varios Compositores: "Tañidos" Música Barroca Española para Guitarra (Vol. 1)
La Chitarra alla Spagnola: 17th Century Music for Baroque Guitar
Rome - Paris - Madrid: European Baroque Guitar Music