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 0x7f8543ebec26d0683d51ee649fb4cf377365f805609f3885f65f1502b56e961f. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eec7ec51-7178-4115-a790-2cb042523a49.json and https://artists.proofprofile.net/proofs/artist/eec7ec51-7178-4115-a790-2cb042523a49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Walkure, Act III: Ride of the Valkyries
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 0x4df5f7bb5c81abf51046906896f8bad1049f9ba828d8ed201b8691da8b02405c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:50:15Z), 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/HKI199332102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0d944d5afeaec52f2bf3ec35665129d06e275d3081f042b8554af51a11a3a3. 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/HKI199283025.
The Firebird Suite (1919 version): Firebird Suite: King Kastchei's Infernal Dance (1919 version)
Belgian Radio and Television Philharmonic Orchestra
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368f0e5009efec8849c6882cc41ebbe00c7eefe5db5ed2aac6cc69dc06e2e490. 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/HKI199714805.
Pini di Roma (Pines of Rome): IV. Pines of the Appian Way
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Feste romane (Roman Festivals): IV. Epiphany
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1161f7e8b216c7b71739db3f829e2d750d6857c5a77a67698ed037080dfcc5. 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/HKI199297104.
Le sacre du printemps (The Rite of Spring): Part 2: The Sacrifice (excerpt)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411eedf9e009d1aa4c5c6965268596b9047edcb4c54e1d2bc5d1393787c8884f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:01:17Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199238801.
Danzas fantasticas (Fantastic Dances), Op. 22: III. Orgia
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157deb0112e37f093b4ac28ad0041b61d14581f56c60739c0f27ab08ec3b9f5f. 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/HKI199263006.
Gotterdammerung, Act III: Siegfried's Death and Funeral March
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Bilder einer Ausstellung: X. The Great Gate of Kiev
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1812 Festival Overture, Op. 49: 1812 Overture, Op. 49: Finale
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Sarasate: Virtuoso Works for Violin, Carmen Fantasy, Zapateado
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Carmen Fantasy, Op. 25: IV. Allegretto moderato
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2442d7ce0abb32647ee1534943d3a47c1aa192c07e53ea302d6f0609c8159656. 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/GBPJT0900705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2628a0229b4e71d69c54f722e61e4b101b47db5893a4e016aabb15e81a9e99b8. 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/GBPJT0900706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118ae8797f7ae93a0530cf69a498cf65cb964331a0c2b6ed6eb9a23d2917e718. 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/GBPJT0900709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6ada2bd12d24e759a35722ef4f1f804b6172f3988f7fef673e77c10748d231. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPJT0900710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4722ad21e217bd5abbd1dd69ae3aef30e87ea5eebc6cef2aecdef97c7373987. 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/GBPJT0900714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345d01807970813d9f4c07e570e6e3ee9fea7098ebee4ad3ef15697b96506912. 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/GBPJT0900715.
Shostakovich: Sinfonia No. 4 en C Minor, Op. 43
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Fantasía para un gentilhombre: IV. Allegro con brio
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Valses poéticos: Melodico (Arr. J. McFadden)
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El amor brujo, Scene I (1915 Version): No. 4, Danza del fin del día
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Suite española No. 1, Op. 47 (Arr. N. Kraft for Guitar): V. Asturias "Leyenda"
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Danzas fantasticas, Op. 22: Danzas fantasticas (Fantastic Dances), Op. 22: III. Orgia
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Alfredo Casella: Concerto & Sonata a tre
Eudora Records Ten-Year Anniversary Sampler
Palomo: Arabescos, Caribiana & Humoresca
Concerto for 2 Pianos in E-Flat Major, K. 365: III. Rondeau. Allegro
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Rachmaninoff: Piano Concerto No. 3 in D Minor, Op. 30 - Prokofiev: Piano Concerto No. 2 in G Minor, Op. 16
Piano Concerto No. 2 in G Minor, Op. 16: III. Intermezzo. Allegro moderato
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Carlos Baguer: Las 17 Sinfonías. Sinfonías 6, 7, 8, 9, 10, 11, 12
Carlos Baguer: Las 17 Sinfonías. Sinfonías 13, 14, 15
Carlos Baguer: Las 17 Sinfonías. Sinfonías 1, 2, 3, 5
Carlos Baguer. las 17 Sinfonías. Sinfonías 16, 18, 19
Dos Apuntes Musicales Españoles: I. Para Violoncello y Cuerdas
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Ge Gan-Ru: Fairy Lady Meng Jiang - Lovers Besieged
Luis de los Cobos: Obra sinfónica complete
Breton & Monasterio: Spanish Romantic Violin Concertos
Márquez, Montsalvatge, Amargós: Conciertos para Flauta
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Emilio Aragón: Carlitos y el Campo de los Sueños (Original Motion Picture Soundtrack)
Jose: Sinfonia Castellana / Suite Ingenua / El Mozo De Mulas (Suite)
Rodrigo: Piano Concerto / Musica Para Un Jardin (Complete Orchestral Works, Vol. 4)
Turina: Sinfonia Sevillana / Danzas Fantasticas / Ritmos
Ainhoa Arteta y Dwayne Croft en Concierto
Mendelssohn, Felix: Violin Concerto in D Minor / Concerto for Violin and Piano
Manuel de Falla: Noches en los Jardines de España: I. En el Generalife. Allegretto tranquillo e misterioso
Grieg: Piano Concerto in A Minor, Op. 16: I. Allegro molto moderato
Rodrigo: Concierto in modo galante - Concierto de Estio
Canconeta for Violin and String Orchestra
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Rodrigo: Per La Flor Del Lliri Blau / A La Busca Del Mas Alla (Complete Orchestral Works, Vol. 6)