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 0xc2e89ce809875c303b808ebe53ac2553a69ec89af76494dacbc5593496acbf90. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a1caec0-9826-46f4-a3e8-a55908f90aff.json and https://artists.proofprofile.net/proofs/artist/6a1caec0-9826-46f4-a3e8-a55908f90aff.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Organ Sonata No. 1 in D Minor, Op. 42: I. Introduction et allegro
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 0xfabc51149edc675b807b7d9d32a30c8ee8bd7388bcb7a18f589e498870fdad8a. 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/NLY331504189 — a six-check JSON result.
Organ Sonata No. 1 in D Minor, Op. 42: II. Pastorale. Andante quasi allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca5dd2ef918e4013a3e61c4be89ea01521dd4e45430bc8f91f45d21635f8560. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/NLY331504190 — a six-check JSON result.
Organ Sonata No. 1 in D Minor, Op. 42: III. Final. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd408a240a2c9839cbe84ecb19a9c388fb2db30b26d1fa1ed5ab88129a38a6f25. 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/NLY331504191 — a six-check JSON result.
Organ Sonata No. 2 in D Major, Op. 50: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe704ff4ccad57339a2b9d0528bd386dc1e341434817c06d11ca322977519cc1c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLY331504192 — a six-check JSON result.
Organ Sonata No. 2 in D Major, Op. 50: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ca49be14e932b1262464a9b25736a7a9feed3cb2095e909738c92feba098ba. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331504193 — a six-check JSON result.
Organ Sonata No. 2 in D Major, Op. 50: III. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc77728d439fe2543654b05da3e0bafd6be7d9d8101ec47a2abc2f47e97758a0. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/NLY331504194 — a six-check JSON result.
Organ Sonata No. 3 in C Minor, Op. 56: I. Preludio. Allegro maestoso e con fuoco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef045e9b8ee09e6791a26aa0aea62272fc62ba27af7ebcb6c7f55bfe94e07fb. 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/NLY331504195 — a six-check JSON result.
Organ Sonata No. 3 in C Minor, Op. 56: III. Fuga. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930502328c22087d230205e15b2a7d4bac056442ac28ac7806cd2e89b6b79d0e. 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/NLY331504197 — a six-check JSON result.
Organ Sonata No. 4 in D Minor, Op. 61: I. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544e2c069d7e4624edce1f9aac27559042e707cbecf3cbd8c2556809768d331f. 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/NLY331504198 — a six-check JSON result.
Organ Sonata No. 4 in D Minor, Op. 61: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec63cde3afbbc17c74a0ce6962ba0fe3177ce196dc4ce38876a9fec0f49c29fb. 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/NLY331504199 — a six-check JSON result.
Organ Sonata No. 4 in D Minor, Op. 61: III. Menuetto. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb4581b3fb382a47a1e3bf2c2ac65c22a6b07c3858af1f07ccc9d164156a873. 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/NLY331504200 — a six-check JSON result.
Organ Sonata No. 4 in D Minor, Op. 61: IV. Final. Adagio-Allegro vivace con fuoco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae739d9971008f84a53bd557068996605edcc9bbb01d0403a07f8c7def2d815. 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/NLY331504201 — a six-check JSON result.
Organ Sonata No. 5 in C Minor, Op. 80: I. Allegro appassionato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f7b6021e9e0c0d26dc3357590efcd1d29674e40b7fd374f335ae3eae574039. 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/NLY331504202 — a six-check JSON result.
Organ Sonata No. 5 in C Minor, Op. 80: II. Adagio con molt'espressione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b87fb9a1a13eeae4fe4884dbb9e07a42f1742ec59e37eefbccf4827a004aee5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331504203 — a six-check JSON result.
Organ Sonata No. 5 in C Minor, Op. 80: III. Scherzo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5718d0dbfcb5c9b6bdc8609352e837fb706e067cd5d53f5ab341fc345a752f83. 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/NLY331504204 — a six-check JSON result.
Organ Sonata No. 5 in C Minor, Op. 80: V. Choral et fugue. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ce29174767f504377d57358615c8d8c0ab8d841ba947fa0adcb5c3ed4c22e0. 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/NLY331504206 — a six-check JSON result.
Organ Sonata No. 8 in A Major, Op. 91: I. Introduction et allegro risoluto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaab5750c28b45fb77df037c72c7886e1d95db7d675ae043270eef7c4dde580. 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/NLY331504216 — a six-check JSON result.
Howells: Organ Music; Rhapsody & Psalm-Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0a066b2dfb941dc81ee7e2fe9d1e5294876057818f092564bb114e138f66c5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLY332200545 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4d4a9f1ff5069e00f9f77eda968329b5998941b5c242f6a3859f0c034807c8. 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/NLY331403115 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd7695a088e6eafb0f6d952114eccd5088c7ad3bc7828ff90a2a26d103fe401. 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/NLY331403116 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9de6a2b422848f4b43007cd4b578599fcd2811c993864ad6c1c4c524d481112. 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/NLY331403117 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881ad5d6d8716d9bab71b6312718c522c85221f1d3b02f1199ca4e3db272a32e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLY331403118 — a six-check JSON result.
Muffat: Complete Apparatus Musico-Organisticus
Couperin: Messe pour les Paroisses & Messe pour les Couvents
Messe à l'usage ordinaire des paroisses, pour le festes solemnelles: Gloria VI. Qui sedes ad dexteram patris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f274ce4b1c7f3991a897fabb909c72877e68738a7700dcdcd3516659ead66f. 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/NLY331211824 — a six-check JSON result.
Organ and Horns Recital at Cathedral of Saint Lorenzo
Johann Kaspar Kerll : L'organo barocco di Collemaggio / L'Aquila (Opera omnia per organo)
Franz Liszt : Organo Pinchi, Op. 419 / Tempio S. Giovanni Bosco / Castelnuovo Don Bosco (Asti, Italy)
L'organo Domenico Benvenuti (1582) & Domenico Densi (1721) (Basilica Cattedrale Santa Maria Assunta, Orte, Viterbo)
Partita No. 2 in D Minor, BWV 1004: V. Ciaccona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd7645fe23c236da6fa23a76f37de381711b3927e6238574bf0e7ccaeb1857. 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/NLY331304120 — a six-check JSON result.
Partita in G Minor, BWV 1004: V. Ciaccona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a3bcb41e909f2ef6150f0121eb4a79f1ec9db9924da2b7989fd02b5f8d1603. 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/NLY331805646 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9365042cb964c5f5ca43f2620462af0d41caac842a3113dca7bb93b71272e2e3. 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/NLY332200546 — a six-check JSON result.
Chaconne in D Minor, BWV 1004 (Andante maestoso, ma non troppo lento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9125a9de533a4961a51413ebf921ee16ede8e12bedc62bbe33e923e02fe78b2f. 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/NLY331406094 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4269e2e5b883743709e2adbac2584f7cf54c323fd166cc0ce8fef774b719982. 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/NLY331604552 — a six-check JSON result.
Durufle: Complete Music for Choir and Organ (Requiem, Messe 'Cum jubilo' Motets, Organ Music)
Essential Classical, Vol. 1 (50 Beautiful Classical Themes)
50 Symphonic Christmas Pieces, Vol. 1 (The Finest Classical Selection for Christmas)