thumb|360px|The Helsinki Philharmonic Orchestra performs in 2015 The Helsinki Philharmonic Orchestra (; ; literal English translation: Helsinki City Orchestra; commonly abbreviated as HPO) is an orche
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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 0x14df2a1eaeddc4ba7d2c1ed6370aeb5222c3fe71ea0751e0e23d32c6d7f4c235. 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/c4a21f92-42ca-47ad-ad3c-68f2e51f47a4.json and https://artists.proofprofile.net/proofs/artist/c4a21f92-42ca-47ad-ad3c-68f2e51f47a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Korngold: Much Ado About Nothing & Sinfonietta
Earquake: The Loudest Classical Music of All Time
Sibelius: The Essential Orchestral Favourites
Shchedrin, R.K.: Cello Concerto / The Seagull Suite
Sunleif Rasmussen: Symphony No. 2 "The Earth Anew"
Rautavaara: Rubáiyát, Balada, Canto V & 4 Songs from Rasputin
Dvořák: Violin Concerto in A Minor & Romance in F Minor - Suk: Fantasy in G Minor, Op. 24
Chausson: Poème de l'amour et de la mer - Berlioz: Les nuits d'été - Duparc: Songs
Pictured Within "Birthday Variations for M.C.B" - Kuusisto: Symphony, Op. 39 (Live)
Sibelius: Violin Concerto / The Bard / The Wood Nymph
Opera Arias (Soprano): Isokoski, Soile - Tchaikovsky, P.I. / Bizet, G. / Gounod, C. / Puccini, G. / Verdi, G. (Scene D'Amore)
Sibelius: Karelia Suite, Rakastava & Lemminkäinen
Karelia Suite, Op. 11: I. Intermezzo. Moderato
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Karelia Suite, Op. 11: II. Ballade. Tempo di Menuetto
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Karelia Suite, Op. 11: III. Alla marcia. Moderato
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Rakastava, Op. 14: I. The Lover. Andante con moto
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Lemminkäinen, Op. 22: I. Lemminkäinen and the Maidens of the Island. Allegro molto moderato - Allegro moderato
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Lemminkäinen, Op. 22: III. Lemminkäinen in Tuonela. Il tempo largamente - Molto lento - Largo assai
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Rakastava, Op. 14: II. The Path of His Beloved. Allegretto
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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
Rakastava, Op. 14: III. Good Evening!... Farewell! Andantino - Doppio più lento - Lento assai
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Lemminkäinen, Op. 22: II. The Swan of Tuonela. Andante molto sostenuto
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Lemminkäinen, Op. 22: IV. Lemminkäinen's Return. Allegro con fuoco - Quasi Presto - Presto
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Bartók: Bluebeard's Castle, Op. 11, Sz. 48 (Live)
Bartók: The Wooden Prince, Op. 13, Sz. 60 & The Miraculous Mandarin Suite, Op. 19, Sz. 73
Black Composer Series, Vol. 5: José Mauricio Nunes Garcia: Requiem Mass (Remastered)
Requiem Mass: I. Introitus: Requiem aeternam
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Requiem Mass: IV. Sequence: Dies irae - Ingemisco - Inter oves
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Requiem Mass: VIII. Communio: Lux aeternam
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Requiem Mass: III. Gradual: Requiem aeternam
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Requiem Mass: V. Offertorio: Domine Jesu Christe
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Glanert: 4 Präludien und Ernste Gesänge & Weites Land - Brahms: Clarinet Sonata No. 1
Zemlinsky: Die Seejungfrau & Sinfonietta, Op. 23
Tüür: Symphony No. 5 & Prophecy for Accordion and Orchestra
Shostakovich: 6 Romances, Op. 62a, Scottish Ballade - Suite on Verses of Michelangelo Buonarroti, Op. 145a
Madetoja: Symphonies Nos. 1 and 3 & Okon Fuoko Suite
Sibelius: Symphonies Nos. 3, Op. 52 & 5, Op. 82
Shostakovich: The Execution of Stepan Razin, Zoya Suite & Suite on Finnish Themes
Madetoja: Symphony No. 2 - Kullervo - Elegy
Rautavaara: Modificata, Incantations & Towards the Horizon
Berlioz: Harold in Italy - Paganini: Sonata per la Grand Viola e Orchestra
Meriläinen : Concerto No.2 For Piano And Orchestra, Symphony No.3, Concerto For Double Bass And Percussion
Tiensuu: Vie - Missa - False memories I-III
Rautavaara: Before the Icons - A Tapestry of Life
Klami, U.: Kalevala Suite / Aurora borealis / Cheremis Fantasia
Vocal Recital: Salminen, Matti - Merikanto, O. / Sibelius, J. / Madetoja, L. / Kilpinen, Y. / Turunen, M. / Luolajan-Mikkola, V. / Kuula, T.
Rautavaara, E.: Manhattan Trilogy / Symphony No. 3
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Sibelius, J.: Violin Concerto in D Minor / Symphony No. 2
Paavo Heininen : Arioso, Piano Concerto No.2, Symphony No.2
Orchestral Music - Leif, S. / Shostakovich, D. / Nielsen, C. / Schulhoff, E. (Earquake)
Sibelius: Karelia Suite, Op. 11: I. Intermezzo
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Matkamiehen virsi (Traveller's Hymn) (arr. for soprano and orchestra)
Vocal Recital: Isokoski, Soile - Finnish Sacred Songs (Suomalainen Rukous)
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Tuhansin kielin (With a Thousand Tongues) (arr. for soprano and orchestra)
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Suojelusenkeli (Guardian Angel) (arr. for soprano and orchestra)
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