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 0xa7bf787b9e335188d6e488bbc1b02801b31fd460db4aa906f4821c5a831bc809. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e843a51-93e2-4cca-95e9-5eeb87363187.json and https://artists.proofprofile.net/proofs/artist/8e843a51-93e2-4cca-95e9-5eeb87363187.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Saariaho, K.: 5 Reflets De L'Amour De Loin / Nymphea Reflection / Oltra Mar
5 Reflets de L'Amour de loin (5 Reflections on Love from Afar): No. 1. Outremer (2 Shores)
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 0x08b14cffd116ae25e18948214911be9880ca508cb50b11a10b1fd9c55595e8f6. 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/FINDE0400064 — a six-check JSON result.
5 Reflets de L'Amour de loin (5 Reflections on Love from Afar): No. 3. L'Amour de loin (O Distant Love)
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Oltra mar (Across the Sea): I. Depart (Departure)
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Oltra mar (Across the Sea): II. Amour (Love)
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Oltra mar (Across the Sea): III. Vagues (Waves)
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Oltra mar (Across the Sea): IV. Temps (Time)
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Tapiola Originals - Choral Works Commissioned by the Tapiola Chamber Choir
Det sjungande tradet, Op. 110 (The Singing Tree)
La passion de Simone: Station 1, Simone, grande sœur
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Peace - Music For Reflection And Consolation
Orchestra of the Royal Opera House, Covent Garden
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Tapiola Chamber Choir and Friends of Sibelius and Norjanen, Hannu (conductor)
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Musiikin tähtihetkiä 20 - Hiljentymisen hetkiin - 40 rakastettua hengellistä laulua
Oltra mar (Across the Sea): I. Depart [Departure]
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Conditor alme siderum (Hymn for the Vespers at Advent)
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Sibelius: 5 Songs, Op. 38: No. 1, Höstkväll (Orchestral Version)
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The History of Classical Music: The Best of the Baroque Period
Bach, JS: Violin Concerto No. 2 in E Major, BWV 1042: I. Allegro
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Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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Bach, JS: Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
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The Four Seasons, Violin Concerto No. 1 in E Major, RV. 269, Op. 8 No. 1 'La primavera/ Spring': III. Allegro
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Bach, JS: Brandenburg Concerto No. 1 in F Major, BWV 1046: III. Allegro
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Bach, JS: Partita for Solo Violin No. 2 in D Minor, BWV 1004: V. Chaconne
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The Four Seasons, Violin Concerto No. 2 in G Minor, RV. 315, Op. 8 No. 2 'L'estate/ Summer': III. Presto
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The Four Seasons, Violin Concerto No. 3 in F Major, RV. 293, Op. 8 No. 3 'L'autunno/ Autumn': I. Allegro
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Bach, JS: Brandenburg Concerto No. 3 in G Major, BWV 1048: I. —
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The Four Seasons, Violin Concerto No. 3 in F Major, RV. 293, Op. 8 No. 3 'L'autunno/ Autumn': III. Allegro
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The Four Seasons, Violin Concerto No. 4 in F Minor, RV. 297, Op. 8 No. 4 'L'inverno/ Winter': I. Allegro non molto
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Gounod: Ave Maria, CG 89a (After Bach's Prelude, BWV 846) [Arr. for Trumpet and Organ]
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Magnificat in G Minor, RV. 611: Magnificat
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Purcell: Dido and Aeneas, Z. 626, Act 3: Song. "When I Am Laid in Earth" (Dido)
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Sallinen, A.: Kuningas Lahtee Ranskaan (The King Goes Forth To France) [Opera]
Peer Gynt, Op. 23, Act IV: No. 12, Prelude, Morning Mood
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Clarinet Concerto in A Major, K. 622: II. Adagio
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Songs Without Words, Op. 62: No. 6, Allegro grazioso "Spring Song"
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String Quartet in B-Flat Major Op. 76 No. 4 "Sunrise": I. Allegro con spirito
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Orchestra dell'Accademia Nazionale di Santa Cecilia
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The Nutcracker, Op. 71, Act II Scene 3: Waltz of the Flowers
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The Nutcracker, Op. 71, Divertissement: Dance of the Reed Flutes
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The Four Seasons, Violin Concerto No. 1 in E Major, RV 269 "La primavera/Spring": I. Allegro
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Songs Without Words, Op. 62: No. 4 in G Major "Morning Song"
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Prélude à l'après-midi d'un faune, L. 86
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Madama Butterfly, Act II: No. 27, Coro a bocca chiusa (Humming Chorus)
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Sunrise, Op. 11: III. Auringon noustessa
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Penderecki Stabat Mater (Compl Sacred Works for Ch - Musique Sacrée series)
Verbum: An Anthology of Choral Works by Kortekangas, Saariaho, Lansio, Heinio and Kyllonen
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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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Britten: Four Sea Interludes from Peter Grimes, Op. 33a: No. 2, Sunday Morning
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Songs Without Words, Op. 62: No. 4, Allegro con anima "Morning Song"
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Gluck: Orphée et Eurydice, Wq. 41, Act 2 Scene 2: No. 30, Danse des ombres heureuses
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Classical Music: The Greatest Love Themes
Liszt: Liebesträume, S. 541: No. 3 in A-Flat Major (Poco allegro con affetto)
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Beethoven: Romance for Violin and Orchestra No. 1 in G Major, Op. 40
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Prokofiev: Romeo and Juliet, Op. 64, Act 1, Scene 2: No. 19, Balcony Scene
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Saint-Saëns: Samson et Dalila, Op. 47, Act 2: "Mon cœur s'ouvre à ta voix" (Dalila)
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Rusalka, Act I: Song To The Moon - Enstürmantal
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Mozart: Le nozze di Figaro, K. 492, Act 2 Scene 1: No. 10, Cavatina, "Porgi, amor" (Contessa)
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Puccini: Gianni Schicchi: "O mio babbino caro" (Lauretta)
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Boccherini: String Quintet in E Major, Op. 11 No. 5, G. 275: III. Minuetto
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Tchaikovsky: The Sleeping Beauty, Op. 66, Act I "The Spell": No. 6, Waltz
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Mendelssohn / Arr. Rawsthorne for Organ: A Midsummer Night's Dream, Op. 61, MWV M13: Wedding March
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Carmen, WD 31, Act II: La fleur que tu m'avais jetée...Non, tu ne m'aimes pas
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Rusalka, Op. 114, Act I: Song to the Moon
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Piano Concerto No. 5 in E Flat, Op.73 'Emperor': II. Adagio un poco mosso
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Piano Concerto No. 20 in D Minor, K.466: II. Romanze
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Debussy: Arabesques, CD 74, L. 66: No. 1, Andantino con moto
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Saint-Saëns: The Carnival of the Animals, R. 125: VII. Aquarium
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Barber: Piano Sonata, Op. 26: III. Adagio mesto
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": II. Andante
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Satie: 3 Gymnopédies: 1. Lent et douloureux
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Mozart: Piano Sonata No. 16 in C Major, K. 545 "Semplice": II. Andante