thumb|Igor Markevitch (photo with dedication) Igor Borisovich Markevitch (27 July 1912 – 7 March 1983) was a Russian composer and conductor who studied and worked in Paris and became a naturalized It
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 0x9107b9687ea263a30bcaec55b5649b0fb527bba783b41dbc441ca9a76ee8ad67. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cc248f4-5b7b-4162-afdb-5b46e7bb09fb.json and https://artists.proofprofile.net/proofs/artist/8cc248f4-5b7b-4162-afdb-5b46e7bb09fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Glinka: A Life for the Tsar (Arr. N. Rimsky-Korsakov)
Carl Nielsen: Symphony No. 4, Op. 29, CNW 28 "The Inextinguishable"
Gounod: Messe solennelle de Sainte Cécile; An Interview with Igor Markevitch (Igor Markevitch – The Deutsche Grammophon Legacy: Volume 19)
Berlioz Symphonie Fantastique / Brahms Sinfonies 1 and 4: Igor Markevitch
Mozart: Bassoon Concerto, K. 191; Haydn: Sinfonia concertante; Cimarosa: Concerto for two flutes; Schubert: Symphony No. 3 (Igor Markevitch – The Deutsche Grammophon Legacy: Volume 3)
Bassoon Concerto in B-Flat Major, K. 191: III. Rondo (Tempo di menuetto)
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 0x0d4c5b8c2c4d996c7b516b92ac2a682e589891df8545ed43e255b81ae1c57869. 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/DEF055801333.
Bassoon Concerto in B-Flat Major, K. 191: I. Allegro - Cadenza: Edouard Flament
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9235c570f1a67b589e2373ab28cd55c3fd5ec3950c828a817ce90d9aee272a3f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEF055801331.
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
Bassoon Concerto in B-Flat Major, K. 191: II. Andante ma adagio
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Brahms: Symphony No. 4; Berlioz: Harold en Italie (Igor Markevitch – The Deutsche Grammophon Legacy: Volume 8)
Berlioz: Symphonie fantastique; Mussorgsky: Pictures At An Exhibition (Igor Markevitch – The Deutsche Grammophon Legacy: Volume 16)
Beethoven: Overtures (Igor Markevitch – The Deutsche Grammophon Legacy: Volume 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe056462c9804c0055ee2aca0f4ae61519509bf89d76970739e89bea9df39d227. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF055800010.
Overture "The Consecration of the House", Op. 124
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Music to Goethe's Tragedy "Egmont", Op. 84
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Symphony No. 4 in F Minor, Op. 36, TH 27: 1. Andante sostenuto - Moderato con anima - Moderato assai, quasi Andante - Allegro vivo
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Tchaikovsky: Symphony No. 3; Francesca da Rimini
Mussorgsky: Songs; Tcherepnin: Tati-Tati; L. Mozart: Toy Symphony; Bizet: Jeux d'enfants
Haydn: Symphony No. 103 'Drum Roll'; Symphony No. 104 'London'; Webner: Preciosa Overture
De Falla: Nights in the Gardens of Spain; El amor brujo; Chabrier: España; Ravel: Boléro
Berg: Violin Concerto; Brahms: Tragic Overture; Alto Rhapsody; Kodály: Psalmus Hungaricus
Beethoven: Symphony No. 1; Symphony No. 5; Symphony No. 8
Symphony No. 5 in C Minor, Op. 67: 1. Allegro con brio
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Symphony No. 5 in C Minor, Op. 67: 3. Scherzo. Allegro - Trio
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Symphony No. 5 in C Minor, Op. 67: 2. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abecbeefac3aedf1df6a0bd721ff5954f8b9331bf14b9fc876a7b2064072719. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLA505900199.
Symphony No. 5 in C Minor, Op. 67: 4. Allegro
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Beethoven: Piano Concerto No. 3; Chopin: Piano Concerto No. 2
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Symphony of Psalms: I. Exaudi orationem meam, Domine
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National Theatre Belgrade: Great Russian Operas from 1955
Igor Markevitch, Vol. 1: Scheherazade and Symphonies by Beethoven, Haydn & Nielsen
Beethoven : Piano Concerto No. 3 - Schumann : Piano Concerto In A Minor
Verdi: Messa da Requiem - Mussorgsky: 6 Songs
Mussorgsky: Pictures at an Exhibition - Night on Bald Mountain
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Pictures at an Exhibition: II. The Old Castle
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Pictures at an Exhibition: III. Tuileries
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4688f3f7b9f7ae2e9945e1859e23dcf8004bd92e80a447bf4d1e45dd66d483c5. 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/DES380022943.
Pictures at an Exhibition: VI. Samuel Goldenberg and Schmuÿle
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Pictures at an Exhibition: IX. The Hut of Baba Yaga
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1b934e01fef31d542efdc15683445a8e22101d97e0e76413dcd41476070818. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DES380022937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d1565769a2b5fe64626fff03b2fa12fc133c21e6f661d7c04c68a4f5b32d0a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DES380022938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd165b7443bbd2fd6915cbef7d6aa6510f10683384c63c0d3731c523478d19b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DES380022944.
Pictures at an Exhibition: VII. The Market Place at Limoges
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Pictures at an Exhibition: X. The Great Gate of Kiev
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Manfred Symphony, Op. 58, TH 28: 1. Lento lugubre - Moderato con moto - Andante
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Symphony No. 1 in G Minor, Op. 13, TH. 24 "Winter Reveries": 1. Allegro tranquillo
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Berlioz, Mussorgsky & Mozart: Orchestral Works
La Création, Hob. XXI:2, Pt. 1 : Récitatif. "Und Gott sah das Licht"
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La Création, Hob. XXI:2, Pt. 1 : Aria. "Nun schwanden vor dem heiligen Strahle"
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La Création, Hob. XXI:2, Pt. 1 : Mit Staunen sieht das Wunderwerk
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La Création, Hob. XXI:2, Pt. 1 : Récitatif. " Und Gott sprach, Es sammle sich das Wasser
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La Création, Hob. XXI:2, Pt. 1 : Aria. "Rollend in schäumenden Wellen"
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La Création, Hob. XXI:2, Pt. 1 : Récitatif. "Und Gott sprach. Es sei'n Lichter an der Feste des Himmels"
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La Création, Hob. XXI:2, Pt. 2 : Aria. "Auf starkem Fittiche schwinget sich der Alder stolz"
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La Création, Hob. XXI:2, Pt. 2 : Récitatif. "Und Gott schuf grosse Walfische"
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La Création, Hob. XXI:2, Pt. 2 : In holder Anmut stehn & No. 19, Der Herr ist gross in seiner Macht
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La Création, Hob. XXI:2, Pt. 2 : Récitatif. "Gleich öffnet sich der Erde Schoss"
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La Création, Hob. XXI:2, Pt. 2 : Récitatif. "Und Gott schuf den Menschen"
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La Création, Hob. XXI:2, Pt. 2 : "Vollendet ist das grosse Werk", No. 27, "Zu dir, o Herr, blickt alles auf" & No. 28, "Vollendet ist das grosse Werk"
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La Création, Hob. XXI:2, Pt. 3 : "Singt dem Herren alle Stimmen!"
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La Création, Hob. XXI:2, Pt. 1 : Introduction
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La Création, Hob. XXI:2, Pt. 1 : Récitatif. "Und Gott machte das Firmament"
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La Création, Hob. XXI:2, Pt. 1 : Aria. "Nun beut die Flur das frische Grün"
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La Création, Hob. XXI:2, Pt. 1 : Choeur. "Stimmt an die Saiten"
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La Création, Hob. XXI:2, Pt. 1 : Récitatif. "In vollem Glanze steiget jetzt die Sonne"
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La Création, Hob. XXI:2, Pt. 1 : "Die Himmel erzählen die Ehre Gottes"
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La Création, Hob. XXI:2, Pt. 2 : Aria. "Mit Würd und Hoheit angetan"
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La Création, Hob. XXI:2, Pt. 2 : Récitatif. "Und Gott sah jedes Ding"
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La Création, Hob. XXI:2, Pt. 3 : Récitatif. "Aus Rosenwolken bricht"
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La Création, Hob. XXI:2, Pt. 3 : "Von deiner Güt, o Herr und Gott"
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Mussorgsky: Pictures at an Exhibition (Original Piano Version and Ravel Orchestration)
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Markevitch Conducts Verdi, Brahms, Mussorgsky, Stravinsky and Others
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Modest Mussorgsky: Russian Songs, Pictures at an Exhibition - Igor Stravinsky: Symphony of Psalms
Igor Markevitch Conducts Richard Wagner and Claude Debussy
Manuel de Falla: Noches en los jardines de España, El sombrero de tres picos & La vida breve (interludio y danza No. 1)
Tchaikovsky: Symphony No. 6; Francesca da Rimini (Igor Markevitch – The Deutsche Grammophon Legacy: Volume 13)
Rimsky-Korsakov: Russian Easter Festival Overture; Overture May Night; Le Coq d'or; Borodin: In The Steppes Of Central Asia; Liadov: Fragment de l'Apocalypse; Glinka: Ruslan and Lyudmila (Igo
Bizet: Carmen & L'Arlésienne Suites Nos. 1 & 2
Swan Lake, Ballet suite, Op. 20a, Dance of the swans
Uplifting Classical - Music to energize your mood
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