Olga Samaroff (born Lucy Mary Agnes Hickenlooper; August 8, 1880May 17, 1948) was an American pianist, music critic, and teacher. Among her teachers was Charles-Valentin Alkan's son, Élie-Miriam Delab
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 0x12ed49cccf1f42fcb4ae2525ee608b0de149946cc890aade1d0b60f024044846. 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/8682b33b-d900-403a-b270-34304964ceb9.json and https://artists.proofprofile.net/proofs/artist/8682b33b-d900-403a-b270-34304964ceb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Waves & Billows. Piano Evocations from the Golden Age (Extended Edition)
Ave Maria. Op. 52, No. 6 (D.839, Arr. For Solo Piano by Armbruster) - Duo-Art 102835
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
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Samson Et Dalila: My Heart at Thy Sweet Voice - Welte-Mignon 2260
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Impromptu No.2, Op. 31 in F Minor - Welte-Mignon 1481
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Women of Piano. Great Female Pianists of the Golden Age, Vol. 2
Etude De Concert, Op. 2, No. 6, Si Oiseau J'etais, "Were I a Bird" - Welte-Mignon 1654
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Pieces, Op. 2: No. 1, Etude in C-Sharp Minor - Duo-Art 7325
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Chaconne in G Major HWV 435 - Welte-Mignon 1106
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Gavotte and Variations (Arr. By Leschetizky) - Duo-Art 6217
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Éphémères. Piano Music from the Golden Age
Masters of the Roll: Ossip Gabrilowitsch & Olga Samaroff
Romance Without Words In A Flat Minor, Op. 17 No. 3
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Classical SoundScapes For Film Vol, 24: Ossip Gabrilowitsch & Olga Samaroff
Classical SoundScapes For Film Vol, 3: Ossip Gabrilowitsch & Olga Samaroff
Schmetterling. Piano Music by Chopin, Schumann and Legacy
Lyrische Stucke, Op. 43: No. 4, Voeglein Birdling (Little Bird) - Welte-Mignon 1277
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Humoresques, Op. 101: No. 7, Poco Lento E Grazioso (G♭ Major) - Welte-Mignon 1324
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Impromptu No. 1, Op. 29, A-Flat Major - Welte-Mignon 455
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Women of Piano. Great Female Pianists of the Golden Age
Women of Piano. Great Female Artists of the Golden Age
Zephrys. Piano Evocations from the Golden Age
Murmuring Zephyrs. (Murmelndes Luftchen) Op. 21, No .4 - Duca 10
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Aeolian Murmurings. Piano Evocations from the Golden Age
Aeolian Murmurings. Op. 123 (Concert Study) - Duo-Art 5797
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Valse Sentimentale. Op. 51, No. 6 - Welte-Mignon 1679
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Waltz, Op. 39, No. 15 A-Flat Major - Duo-Art 5642.
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Valse Nonchalante. Op. 110 in D-Flat Major - Duo-Art 5831
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Wanderer. Schubert & Beethoven from the Golden Age
Women At The Piano - An Anthology Of Historic Performances, Vol. 2 (1926-1950)
Romanze. Heritage Chopin, Grieg & Tchaikovsky
The Seasons, Op. 37a: No. 6, Barcarolle (June) - Duo-Art 7128
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Beethoven, Chopin & Others: Piano Works (2024 Remaster)
Sonderausgabe für Augustinermuseum Freiburg: Johannes Brahms, Vol. 2
"Souvenirs" - 20th Century Classical Piano Rolls
Edvard Grieg: The Piano Music in Historic Interpretations
Mirages. Hidden Treasures of Classical Piano (Extended Edition)
Scherzo No.1 in B-Flat Major (Posthumous) D.593 - Welte-Mignon 915
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e603ced784eb45be538e9367b1a5266e0ff2838d0069ce1e2292c3b4dd444c. 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/DEPI82307175.
Bach, J.S.: Piano Transcriptions, Vol. 1 (Great Pianists) (1925-1947)
The World's Greatest Pianists, Volume Two
Welte-Mignon Piano Rolls, Vol. 3 (1905-1926)
Éphémères. Piano Music from the Golden Age (Extended Edition)
Classical Masterworks: Classical Compositions of the 19th Century, Vol. 2