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 0xe12d05fadb24de6c02aed4edc1638ca46f70c9188f658c1bc85100cb4e4bd052. 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/31ae24a0-70b4-4596-b232-ee29c3607e69.json and https://artists.proofprofile.net/proofs/artist/31ae24a0-70b4-4596-b232-ee29c3607e69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Netherlands Radio Philharmonic Orchestra
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 0xc57c24edda89dc2d740a10d5bb5ec791ffd7135b103c849ecc2f8fa801f4039f. 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/NLB152100077.
Missy Mazzoli: Dark with Excessive Bright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7560a383ff834143511e70ae60e8e8a5ea418f8b36ec1fb46e075caadced69b4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEAEB2272010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56a0bb6c5eddaa1002a8f816ccbf0f4ab37233f843c287ac1db2e0d1a0119fe. 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/SEAEB2272020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b50eca6997d6c6b8c37752b0bf54e649a26ea53116dd418d35c41373e86768. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEB2272030.
Orpheus Undone: Pt. 1: Behold the Machine, O Death
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda64d4f33b39c630447d6bbb63a684412cfbf3d65252544d90dcefab0869701. 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/SEAEB2272040.
Orpheus Undone: Pt. 2: We of Violence, We Endure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebcf855300269f895173f5c857daa24d4a575d85c5647821777a4379cbabc8e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEAEB2272050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74643cc879b2f666fe1b92c56a9a4f91c84ac365780c9c7f97f96e7a42fc37ac. 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/SEAEB2272060.
Dark with Excessive Bright (Arr. For solo violin and string quintet)
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Bernstein, Barber, Crawford & Ives: Americans
Violin Concerto in D Major, Op. 61: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf222e3605ffff4fa1614259b91c947fc74e1c4e7fc39fa6af330bb3b6a437c. 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/SEAEY2092020.
Rachmaninoff in Lucerne - Rhapsody on a Theme of Paganini, Symphony No. 3
Rhapsody on a Theme of Paganini, Op. 43: Variation VI - L'istesso tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcf7da5bf38fdd1e364f30925436e649a5fb9519d7f7ac0ed8e628c15d44ae9. 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/CH0011900282.
Rhapsody on a Theme of Paganini, Op. 43: Variation VIII - Tempo I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69941f16074afdb83de55122a3d82ce9bb9746c2e1be0463b0459f0500bf691. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0011900284.
Rhapsody on a Theme of Paganini, Op. 43: Variation IX - L'istesso tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe1cbbb93dc6759b94f7b35fa7be9fd71f6ca142362ad04d5c45e34252181db. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0011900285.
Rhapsody on a Theme of Paganini, Op. 43: Variation XIV - L'istesso tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3640254769cae533148a331a1026fe4241fa4186b79948d96a1b80568e203be0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0011900290.
Rhapsody on a Theme of Paganini, Op. 43: Variation XVIII - Andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5d994c1546feae90f070838848601c7be9d05372cfe01ef5f63dfedad65467. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0011900294.
Rhapsody on a Theme of Paganini, Op. 43: Variation XXIV - A tempo un poco meno mosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3156b336f2778676c0354955ee4001e665cfe83453e73d9b1e103e244ea59d9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0011900300.
Beethoven: Symphony No. 9 & Brahms: Nänie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cde4cc3212f257c322c986657889043a3e0efd7e4dafd711dcf85d325d8dfea. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0011700890.
Prokofiev: Symphonies No. 2 & No. 4 (Second Version)
The Beethoven Project - The 5 Piano Concertos & 4 Overtures
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f4a849cb4a4bf2798fca60cfce7296a951fe18c2ed866de208ee2ab7af7046. 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/CH0011700888.
Violin Concerto No. 1, Op. 77 / In tempus praesens
Saint-Saëns: Cello Concerto No.1: Sonatas Nos. 2 & 3
Cello Concerto No. 1 in A Minor, Op. 33: I. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6af32d498fde27a4cd6f0c69dac73762b865a01d80d943343d4c8bdc525f5de. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM1615010.
Cello Concerto No. 1 in A Minor, Op. 33: II. Allegretto con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f28bd3bdd84e89a8f966d5c4dd8ee078df61b5e9253299b36a1adcacbfb68. 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/FR7JM1615020.
Cello Concerto No. 1 in A Minor, Op. 33: III. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe038e60427c5098095888a3c464c17b883148d2c875cef79d83139a77c3d58e8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM1615030.
Cello Sonata No. 2 in F Major, Op. 123: I. Maestoso (Largamente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab10513b447ebfcec48c523eee213f128e74156a01eacf67286b7b660bd7b970. 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/FR7JM1615040.
Dutilleux: Tout un monde lointain; 3 Strophes sur le nom de Sacher / Debussy: Cello Sonata
3 Strophes sur le nom de Sacher: I. Un poco indeciso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c18ce776f0e6f9fb44f5521e944f170e7e71c288906626147af69286ff09055. 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/FRZ141429010.
Cello Sonata in D Minor, L. 135: I. Prologue (Lent, sostenuto et molto risoluto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95247a5673ed8992b0248b75ad6818d3307b408869d213accb143590c0f04d78. 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/FRZ141429040.
Concerto pour violoncelle et orchestre "Tout un monde lointain": I. Énigme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c63268a1e52e66fa638111cb98293164c13a34b427a24bc5d8301aadd2f7606. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ141429070.
Tchaikovsky & Prokofiev: Piano Concertos
Symphony No. 6 in D Major, Op. 60, B. 112: I. Allegro non tanto
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Symphony No. 6 in D Major, Op. 60, B. 112: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab78162aca2b23dbe6b82b3e18debe7139d8bdc0f3b3f1c3d73f0d2b26be852a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FRZ141324020.
Symphony No. 6 in D Major, Op. 60, B. 112: III. Scherzo (Furiant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7cf37e2a160d83c9b1525837153b02bcd22cb23059722fadd43e5d92f4b527. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ141324030.
Symphony No. 6 in D Major, Op. 60, B. 112: IV. Finale (Allegro con spirito)
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Suite in A Major "American Suite", Op. 98b, B. 190: I. Andante con moto
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Suite in A Major "American Suite", Op. 98b, B. 190: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2c2c7a3b795c0f9ef18df7a29c39a0015a9fe35eba5c334af0efbe4c5b4f4a. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/FRZ141324060.
Suite in A Major "American Suite", Op. 98b, B. 190: III. Moderato (alla Pollacca)
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Suite in A Major "American Suite", Op. 98b, B. 190: IV. Andante
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Suite in A Major "American Suite", Op. 98b, B. 190: V. Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa533919a8ddb2abee2d8b22bccd3f4497fa3036487f294ef52c10a891e71bf8. 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/FRZ141216010.
Korngold: Violin Concerto in D Major, Op. 35: I. Moderato nobile
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Korngold: Violin Concerto in D Major, Op. 35: II. Romanze
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Korngold: Violin Concerto in D Major, Op. 35: III. Allegro assai vivace
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Britten: Violin Concerto in D Minor, Op. 15: I. Moderato con moto - Agitato - Tempo primo -
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Britten: Violin Concerto in D Minor, Op. 15: II. Vivace - Animando - Largamente - Cadenza
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Britten: Violin Concerto in D Minor, Op. 15: III. Passacaglia - Andante lento (Un poco meno mosso)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d4451ac4b0c7e00df55bd6b08bdd278a016e2b58e81ca0d2ac34f920ddd9a3. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USHM11461705.
harmonia mundi - Spring Summer 2013, hmnews
Brahms: Violin Concerto in D Major, Op. 77 & Violin Sonata No. 1 in G Major, Op. 78 "Regen"
Violin Concerto in D Major, Op. 77: I. Allegro non troppo
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Violin Concerto in D Major, Op. 77: II. Adagio
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Violin Concerto in D Major, Op. 77: III. Allegro giocoso, ma non troppo vivace
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Violin Sonata No. 1 in G Major, Op. 78 "Regen": I. Vivace, ma non troppo
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Violin Sonata in A Minor, WoO 2 "F-a-e": III. Scherzo in C Minor
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