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 0x540c4f9055ed88bd3d166ab0baa1b859390da931fb108fa24ef9cb2807116833. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87276660-767c-4f81-a228-84bbaad91ece.json and https://artists.proofprofile.net/proofs/artist/87276660-767c-4f81-a228-84bbaad91ece.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Turina: Canto a Sevilla, La procesión del Rocío, Rapsodia sinfónica & Danzas gitanas
Peter Maxwell Davies: Black Pentecost & Stone Litany
Hindemith: Sancta Susanna, Dances from Das Nusch-Nuschi, Suite from Tuttifäntchen & Drei Gesänge
Maxwell Davies: Symphony No. 3 - Cross Lane Fair
Maxwell Davies: Symphony No. 2 - St. Thomas Wake
Bainton: Three Pieces, Pavane, Idyll and Bacchanal, Golden River & Concerto fantasia
Symphony No. 12 in D Minor, Op. 112 "The Year 1917": III. Aurora
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 0x578627044bbc4eb45d291ab348b333137eebd83f68cc1f5291e22fcb617dcbc3. 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/GBLWD2300803.
Symphony No. 12 in D Minor, Op. 112 "The Year 1917": IV. The Dawn of Humanity
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Symphony No. 15 in A Major, Op. 141: I. Allegretto
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Symphony No. 12 in D Minor, Op. 112 "The Year 1917": I. Revolutionary Petrograd
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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
Symphony No. 12 in D Minor, Op. 112 "The Year 1917": II. Razliv
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Ginastera: Piano Concerto No. 2, Panambí
Bush: Lord Arthur Savile's Crime & Trumpet Concerto
Montsalvatge: Partita 1958, Cinco Cancione Negras, Calidoscopi simfònic & Simfonia de Rèquiem
Cinco canciones negras: V. Canto negro (Version for Voice and Orchestra)
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Cinco canciones negras: I. Cuba dentro de un piano (Version for Voice and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0c53b2cf0ca112d922dd24af6519d4da15fd7b30ff5cab1943b6f2ad6bb479. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1205605.
Cinco canciones negras: III. Chévere (Version for Voice and Orchestra)
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Cinco canciones negras: IV. Cancion de cuna para dormir a un negrito (Version for Voice and Orchestra)
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Antheil: Symphonies Nos. 3 & 6, Spectre of the Rose Waltz, Archipelago & Hot-Time Dance
Antheil: Symphonies Nos. 4 & 5 & Over the Plains
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Symphony in D Major: I. Adagio - Allegro vivace - Presto
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Symphony in D Major: IV. Allegro con moto - Majeur
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Roussel: Évocations, Pour une Fête de Printemps & Suite in F
Copland: Orchestral Works, Vol. 3 - Symphonies
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Casella: Symphonies & Symphonic Fragments from La Donna Serpente
Casella: 5 Symphonic Fragments from "Le couvent sur l'eau", Elegia eroica & Symphony No. 1
Gerhard: Don Quixote, Alegrías & Pedrelliana
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Don Quixote, Scene 1 "Don Quixote's Room": Andante maestoso
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa494ccfb9794388c07ea36f344ca7d1b0a3c1051deee11dc8156ec69835637. 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/GBLWD2404301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814a334a39c0a27856236d045957261f2bb25716f3013124006358c5e5ccd174. 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/GBLWD2404302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2d93f065d8ca6b8890d83b8efbda93db49f4e7e3e1b89163812183a6cc4a94. 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/SEAEC2255020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34dc5d6f4e89f073543827400455a22c60124d6a8cecdc988481b849f96f20c. 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/SEAEC2255030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e88ceb66ecd1c7e4612c4027351745b52d1f2e7c5b11b9768d37998a3b6c2f. 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/SEAEC2255040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89db6526bb92e83269e0ce124fd6c4527bab1e8ba6230627c55545fcfc7af481. 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/SEAEC2255010.
Variaciones concertantes, Op. 23: III. Variazione giocosa per Flauto
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Variaciones concertantes, Op. 23: IV. Variazione in modo di Scherzo per Clarinetto
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Variaciones concertantes, Op. 23: V. Variazione drammatica per Viola
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Piano Concerto No. 1, Op. 28: I. Cadenza e varianti
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Piano Concerto No. 1, Op. 28: IV. Toccata concertata
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Variaciones concertantes, Op. 23: VIII. Variazione in modo di Moto perpetuo per Violino
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Variaciones concertantes, Op. 23: XII. Variazsione finale in modo di Rondo per Orchestra
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Concierto argentino: III. Allegro rústico
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Elgar: Falstaff, Orchestral Songs & "Grania and Diarmid"
Tasmin Little Plays British Violin Concertos
Maxwell Davies: Caroline Mathilde Concert Suites
Maxwell Davies: The Beltane Fire, The Turn of the Tide & Sir Charles His Pavan
Bax: Four Orchestral Pieces, Phantasy for Viola and Orchestra & Orchestra, Elegy and Rondo
Four Orchestral Pieces, GP 152: I. Pensive Twilight
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Four Orchestral Pieces, GP 152: II. Dance in the Sun
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Phantasy for Viola and Orchestra, GP 235: II. Lento semplice
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Phantasy for Viola and Orchestra, GP 235: I. Poco lento. Largamente
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Phantasy for Viola and Orchestra, GP 235: III. Allegro vivace
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Gregson: Dream Song, Aztec Dances, Horn Concerto & Concerto for Orchestra
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The Thief of Bagdad Suite: III. The Love of the Princess
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Casella: Italia, Indroduzione, Corale e Marcia & Sinfonia
Casella: Concerto for Orchestra, A notte alta & Symphonic Fragments from La Donna Serpente