Evert Sixten Ehrling (3 April 1918 – 13 February 2005) was a Swedish conductor and pianist who, during a long career, served as the music director of the Royal Swedish Opera and the principal conducto
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 0x91165e8ce6e070ceed2608552413a8a352c13bef726774a21b0086b132718c5a. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5a5017b-e4d3-49bd-98c4-c1b5ec00b08a.json and https://artists.proofprofile.net/proofs/artist/c5a5017b-e4d3-49bd-98c4-c1b5ec00b08a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bruch & Sibelius: Violin Concertos - Szymanowski: Violin Sonata
Torbjörn Iwan Lundquist: Symphonies Nos. 3 & 4
Margareta Hallin: The Early Recordings (1955-1960)
Birgit Nilsson: Swedish Radio Concerts (1947-1961)
Great Swedish Singers: Set Svanholm (1943-1958)
Royal Swedish Opera Archives Vol. 7: Tannhäuser - Siegfried - Parsifal
Helena Dose Live in Gothenburg Stockholm Malmo (1975-1987)
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 0x70944420cac9ba9659ee6d48678e0324ccaed8b175b5ce132efced7c50872c2f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/SEAQB0100110.
5 Decades of Treasured Performances: Camilla Wicks (Live)
Sicilienne (arr. S. Dushkin for violin and piano)
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Violin Concerto in D Minor, Op. 47: I. Allegro moderato (Live)
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Siv Wennberg: A Great Primadonna, Vol. 4 "Arias, Duettes and Scenes"
Great Swedish Singers: Barbro Ericson (1957-1978)
Great Swedish Singers: Arne Tyrén (1958-1969)
Wagner in Stockholm: Recordings 1899-1970
Lidholm: Rites - Rosenberg: Marionettes - Blomdahl: Chamber Concerto
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Violin Masterpieces: David Oistrakh Plays Beethoven & Sibelius
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Symphony No. 4, Op. 69: I. Introduzione. Largo - Allegro
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Symphony No. 4, Op. 69: III. Finale. Allegro vivace
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Sibelius: Violin Concerto in D Minor, Op. 47 (Remastered)
Wagner: Siegfried-Idyll, Wesendonck-Lieder & Symphony in C
The Jussi Björling Series: Radamès - Alfredo - Roméo
Swedish Singers: Elisabeth Söderström (1960-1977)
Montsalvatge: 5 Canciones negras - Respighi: Aretusa - Gli Uccelli
Great Swedish Singers: Sigurd Björling (1942-1968)
Great Swedish Singers: Leon Björker (1934-1959)
Great Swedish Singers: Kjerstin Dellert (1955-1965)
Great Swedish Singers: Kerstin Meyer (1954-1972)
Berwald: Sinfonie sérieuse - Overtures - Tone poems
Royal Swedish Opera Archives Vol. 4: Aida - Lohengrin - Parsifal
Royal Swedish Opera Archives Vol. 2: Der Rosenkavalier - Fidelio
Symphony No. 1 in G Minor, "Sinfonie serieuse": I. Allegro con energia
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Symphony No. 3 in C Major, "Sinfonie singuliere": I. Allegro fuocoso
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Symphony No. 3 in C Major, "Sinfonie singuliere": II. Adagio - Scherzo. Allegro assai - Adagio
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Symphony No. 1 in G Minor, "Sinfonie serieuse": III. Stretto
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Symphony No. 3 in C Major, "Sinfonie singuliere": III. Finale. Presto
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Symphony No. 1 in G Minor, "Sinfonie serieuse": IV. Finale
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Symphony No. 4 in E-Flat Major, "Sinfonie naive": I. Allegro risoluto
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Konsertstycke: Konzertstuck for Bassoon and Orchestra
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Symphony No. 2 in D Major, "Sinfonie capricieuse": I. Allegro
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Symphony No. 2 in D Major, "Sinfonie capricieuse": II. Andante
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Symphony No. 2 in D Major, "Sinfonie capricieuse": III. Finale
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Symphony No. 3 in C Major, "Sinfonie singuliere": II. Scherzo: Adagio - Allegro assai - Adagio
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Symphony No. 3 in C Major, "Sinfonie singuliere": III. Presto
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Symphony No. 4 in E-Flat Major, "Sinfonie naive": II. Adagio - III. Scherzo: Allegro molto
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Royal Swedish Opera Archives Vol. 5: Die Walküre
Wirén: Serenade - Sinfonietta - Symphony No. 4 - Music for Strings
Serenade for String Orchestra, Op. 11: I. Allegro molto
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Serenade for String Orchestra, Op. 11: II. Andante espressivo
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Serenade for String Orchestra, Op. 11: III. Scherzo
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Serenade for String Orchestra, Op. 11: IV. Marcia
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Sinfonietta in C Major, Op. 7a: I. Molto allegro ed energico
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Sinfonietta in C Major, Op. 7a: II. Andante espressivo
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Sinfonietta in C Major, Op. 7a: III. Molto allegro
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Symphony No. 4, Op. 27: I. Tempo moderato
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Symphony No. 4, Op. 27: II. Molto vivace
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Symphony No. 4, Op. 27: III. Tempo moderato
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Beethoven: Violin Concerto in D Major, Op. 61 (Mono Version)
Sibelius: Concerto pour violon, Op. 47 (Mono Version)
David Oistrakh Plays Beethoven - Works for Violin
Piston: Symphony No. 6 / Concerto For Orchestra / Concertino for Piano and Orchestra / Concerto for String Quartet, Winds and Percussion
Concerto for Double Bass and Orchestra: I. Allegro
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Concerto for Double Bass and Orchestra: II. Andante
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Concerto for Double Bass and Orchestra: III. Tempo 1
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Concerto for String Quartet, Wind Instruments and Percussion
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Wirén: Symphony No. 4, Op. 27 - Nielsen: Symphony No. 6, FS 116 "Sinfonia semplice"
Sibelius: The Swan of Tuonela - The Return of Lemminkainen
Rosenberg: Symphony No. 4, "The Revelation of St. John"
Stravinsky: Symphony of Psalms / The Rite of Spring
Egge: Concerto For Cello And Orchestra, Symphony No. 2, Symphony No. 4
Sibelius: Complete Symphonies 1-7 by Sixten Ehrling (2023 Remastered, Stockholm 1953)
Siegfried, Act 3, Scene 3: VI. Dich lieb' ich
Siegfried, Act 3, Scene 3: V. Ewig war ich, ewig bin ich
Siegfried, Act 3, Scene 3: IV. Dort she' ich den Schild
Le Sacre du Printemps, Pt. 1 "L'adoration de la Terre"
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Symphony No. 3 in D Major, Op. 10, "West Coast Pictures": I. Soldis (Sun Haze)
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Symphony No. 3 in D Major, Op. 10, "West Coast Pictures": II. Storm
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Symphony No. 3 in D Major, Op. 10, "West Coast Pictures": III. Sommarnatt (Summer Night)
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Symphony No. 3, "Facets": I. Largamente (attacca)
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Symphony No. 3, "Facets": II. Tranquillo, ma fluente (attacca)
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Symphony No. 3, "Facets": III. Prestissimo (attacca)
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Symphony No. 3, "Facets": IV. Allegro, molto deciso e ritmico (attacca)
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