Ernesto Köhler
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genre: italian-romanticism
genre: late-romantic-era
description: Ernesto Köhler (4 December 1849 – 17 March 1907) was an Italian flautist and composer. He was considered one of the best flautists of his era. Born in Modena, Köhler was taught the flute by his fathe
popularity: 2
followers: 158
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  value: 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
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album: ABRSM Flute Exam Pieces 2018-2021, Grade 8
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album: Miniatures
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  date published: 1995-01-01
album: Flash Flutes
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  date published: 2016-10-15
  track: Tarentelle Op. 70 bis
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:53:27Z
    audio: Tarentelle Op. 70 bis
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  track: Maya
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  track: Valse des Fleurs Op. 87
album: Die soloflote, Vol. 3: Romantik
album: Studi facili per flauto
album: 25 Romantic Etudes, Op. 66, No. 1: The Swing
album: Music for Two Flutes on Original Instruments
album: Reinecke, C.: Flute Sonata, "Undine" / Von Der Wiege Bis Zum Grabe / Violin Sonatinas, Op. 108, Nos. 1-3 / Ballade
album: Beautiful Flautists - Eloquent Music-Making
album: Reinecke: Octet / Von Der Wiege Bis Zum Grabe (From the Cradle To the Grave) / Sextet
album: A Flute for the Tsar
album: Flute Exam Pieces from 2022, ABRSM Grade 7
album: Below
album: Live in Concert: Solo Flute Recital
album: Nu tändas tusen juleljus
album: Grade by Grade Flute – Grade 2
album: A Golden Treasury of Flute Music on Original Instruments
album: Grade by Grade Flute – Grade 1
album: Legacy - 19th Century Virtuoso Duos for Two Flutes and Piano
album: Musiche originali ed inedite per flauto e pianoforte
album: Trott, Laurence: Piccolo

Valse des Fleurs Op. 87
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by artist: Janos Balint
by artist: Ewelina Agata Zawiślak
by artist: Kinga Firlej-Kubica
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  date published: 2016-10-15
genre: italian-romanticism
genre: late-romantic-era
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: Valse des Fleurs Op. 87
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Adagio patetico in Op. 33, No. 10
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genre: italian-romanticism
genre: late-romantic-era
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:53:27Z
audio: Adagio patetico in Op. 33, No. 10
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La Perle du Nord, Op. 86
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by artist: Ernesto Köhler
by artist: Denis Lupachev
by artist: Natalia Frolova
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genre: italian-romanticism
genre: late-romantic-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: La Perle du Nord, Op. 86
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6 Salonstücke, Op. 60: No. 3, Souvenir Russe
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by artist: Denis Lupachev
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genre: italian-romanticism
genre: late-romantic-era
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  date published: 2026-07-31T04:14:58Z
audio: 6 Salonstücke, Op. 60: No. 3, Souvenir Russe
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 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

Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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track: 3 Fantaisies, Op. 38: No. 1. Adagio
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  additional property: OTSVerifyInstructions
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    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:39:04Z
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  subject of: OpenTimestamps Proof of Existence
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track: Capriccio sopra un tema arabo in A Minor
track: Adagio patetico in Op. 33, No. 10

OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a646c17f62e6e92b83762c95d2435368fb3ac8a1298b5c0c8daea5a1ab2833. 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/DEFG21210310.
date published: 2026-07-08T03:53:27Z

Fantasie in G Minor-major, Op. 28, No. 1
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Capriccio sopra un tema arabo in A Minor
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by artist: Mirjam Nastasi
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Capriccio sopra un tema arabo in A Minor
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Studi facili per flauto
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date published: 2022-12-30

25 Romantic Etudes, Op. 66, No. 1: The Swing
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date published: 2024-09-23

Music for Two Flutes on Original Instruments
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  additional property: OTSVerifyInstructions
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    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Trio Sonata in G Major, BWV 1039: III. Adagio e piano
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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