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description: thumb|Vladimir Sofronitsky in a concert Vladimir Vladimirovich Sofronitsky (or Sofronitzky; , Vladimir Sofronitskij; – August 29, 1961) was a Soviet-Russian classical pianist, best known as an inter
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12 Etudes, Op. 8: No. 3 in B Minor
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12 Etudes, Op. 8: No. 4 in B Major
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12 Etudes, Op. 8: No. 5 in E Major
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T20:11:13Z
audio: 12 Etudes, Op. 8: No. 5 in E Major
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12 Etudes, Op. 8: No. 12 in D-Sharp Minor
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by artist: Vladimir Sofronitsky
in album: Scriabin: 150th Anniversary – Piano Works
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popularity: 4
genre: classical
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genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:59:18Z
audio: 12 Etudes, Op. 8: No. 12 in D-Sharp Minor
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8 Etudes, Op. 42: No. 1 in D-Flat Major
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by artist: Alexander Scriabin
by artist: Vladimir Sofronitsky
in album: Scriabin: 150th Anniversary – Piano Works
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popularity: 2
genre: classical
genre: late-romantic-era
genre: early-modern-classical
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genre: impressionism
genre: russian-romanticism
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T16:33:26Z
audio: 8 Etudes, Op. 42: No. 1 in D-Flat Major
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8 Etudes, Op. 42: No. 4 in F-Sharp Major
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by artist: Alexander Scriabin
by artist: Vladimir Sofronitsky
in album: Scriabin: 150th Anniversary – Piano Works
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  date published: 2022-04-01
popularity: 2
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: 8 Etudes, Op. 42: No. 4 in F-Sharp Major
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8 Etudes, Op. 42: No. 5 in C-Sharp Minor
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by artist: Vladimir Sofronitsky
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popularity: 6
genre: classical
genre: late-romantic-era
genre: early-modern-classical
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genre: impressionism
genre: russian-romanticism
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:30:10Z
audio: 8 Etudes, Op. 42: No. 5 in C-Sharp Minor
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8 Etudes, Op. 42: No. 6 in D-Flat Major
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popularity: 2
genre: classical
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genre: early-modern-classical
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genre: impressionism
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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: 8 Etudes, Op. 42: No. 6 in D-Flat Major
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Scriabin: Complete Piano Sonatas
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-08-01T01:44:32Z
  audio: Piano Sonata No. 1 in F Minor, Op. 6: IV. Funebre
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track: Piano Sonata No. 7, Op. 64, "White Mass"
track: Piano Sonata No. 3 in F-Sharp Minor, Op. 23: I. Drammatico
track: Piano Sonata No. 8 in A Major, Op. 66
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track: Piano Sonata No. 9 in F Major, Op. 68, "Black Mass"
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track: Piano Sonata No. 3 in F-Sharp Minor, Op. 23: IV. Presto con fuoco
track: Fantasie in B Minor, Op. 28
track: Piano Sonata No. 4 in F-Sharp Major, Op. 30: I. Andante
track: Piano Sonata No. 4 in F-Sharp Major, Op. 30: II. Prestissimo volando
track: Piano Sonata No. 5 in F-Sharp Major, Op. 53
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Piano Sonata No. 2 in G-Sharp Minor, Op. 19 "Sonata Fantasy": II. Presto
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Piano Sonata No. 7, Op. 64, "White Mass"
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T17:29:52Z
audio: Piano Sonata No. 7, Op. 64, "White Mass"
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Piano Sonata No. 3 in F-Sharp Minor, Op. 23: I. Drammatico
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: Piano Sonata No. 3 in F-Sharp Minor, Op. 23: I. Drammatico
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Piano Sonata No. 8 in A Major, Op. 66
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subject of: OpenTimestamps Proof of Existence
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Piano Sonata No. 3 in F-Sharp Minor, Op. 23: II. Allegretto
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Piano Sonata No. 9 in F Major, Op. 68, "Black Mass"
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genre: impressionism
genre: russian-romanticism
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additional property: OTSTimestamp
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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: Piano Sonata No. 9 in F Major, Op. 68, "Black Mass"
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Piano Sonata No. 3 in F-Sharp Minor, Op. 23: III. Andante
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duration: PT4M34S
duration ms: 274706
explicit: false
by artist: Alexander Scriabin
by artist: Vladimir Sofronitsky
in album: Scriabin: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2015-10-02
popularity: 5
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: Piano Sonata No. 3 in F-Sharp Minor, Op. 23: III. Andante
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Piano Sonata No. 3 in F-Sharp Minor, Op. 23: IV. Presto con fuoco
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duration: PT5M37S
duration ms: 337226
explicit: false
by artist: Alexander Scriabin
by artist: Vladimir Sofronitsky
in album: Scriabin: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2015-10-02
popularity: 3
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
isrc code: DEAD61500707
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
audio: Piano Sonata No. 3 in F-Sharp Minor, Op. 23: IV. Presto con fuoco
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Fantasie in B Minor, Op. 28
type: MusicRecording
duration: PT9M19S
duration ms: 559493
explicit: false
by artist: Alexander Scriabin
by artist: Vladimir Sofronitsky
in album: Scriabin: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2015-10-02
popularity: 15
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
isrc code: DEAD61500721
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Fantasie in B Minor, Op. 28
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Piano Sonata No. 4 in F-Sharp Major, Op. 30: I. Andante
type: MusicRecording
duration: PT2M50S
duration ms: 170853
explicit: false
by artist: Alexander Scriabin
by artist: Vladimir Sofronitsky
in album: Scriabin: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2015-10-02
popularity: 5
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
isrc code: DEAD61500708
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8a0a88683c65ca7156b9bb0781a1fae3c718298129c0a7202e433c490048fc. 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/DEAD61500708.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata No. 4 in F-Sharp Major, Op. 30: I. Andante
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Piano Sonata No. 4 in F-Sharp Major, Op. 30: II. Prestissimo volando
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duration: PT4M44S
duration ms: 284106
explicit: false
by artist: Alexander Scriabin
by artist: Vladimir Sofronitsky
in album: Scriabin: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2015-10-02
popularity: 4
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
isrc code: DEAD61500709
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-30T20:45:02Z
audio: Piano Sonata No. 4 in F-Sharp Major, Op. 30: II. Prestissimo volando
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Piano Sonata No. 5 in F-Sharp Major, Op. 53
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duration: PT11M36S
duration ms: 696840
explicit: false
by artist: Alexander Scriabin
by artist: Vladimir Sofronitsky
in album: Scriabin: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2015-10-02
popularity: 5
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
isrc code: DEAD61500710
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-30T14:36:16Z
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Piano Sonata No. 1 in F Minor, Op. 6: I. Allegro con fuoco
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by artist: Alexander Scriabin
by artist: Heinrich Neuhaus
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  date published: 2015-10-02
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