Viviana Sofronitsky
type: MusicGroup
genre: chamber music
description: Viviana Sofronitsky () is a Russian and Canadian classical pianist, born in Moscow. Her father was the Soviet-Russian pianist Vladimir Sofronitsky. Life and career She started her music studies at
popularity: 6
followers: 142
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ae22442d7a642146265e84ba171dd49b5b8fd1c33a6a9e5db1b522050a9cbf7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954139
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954139
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8032c074-3a9f-4a82-bfc4-ffb49738bdfa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8032c074-3a9f-4a82-bfc4-ffb49738bdfa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8032c074-3a9f-4a82-bfc4-ffb49738bdfa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T21:12:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4ae22442d7a642146265e84ba171dd49b5b8fd1c33a6a9e5db1b522050a9cbf7","name":"Viviana Sofronitsky","registered_at":"2026-06-17T10:11:34Z","symbol":"NIM1362946","token_address":"0xcd91c78c74f05011066ecf60b0012033944c6851","type":"artist","uuid":"8032c074-3a9f-4a82-bfc4-ffb49738bdfa"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  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 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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae22442d7a642146265e84ba171dd49b5b8fd1c33a6a9e5db1b522050a9cbf7. Chain 2 (Bitcoin): anchored in block 954139 (2026-06-17T21:12:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8032c074-3a9f-4a82-bfc4-ffb49738bdfa.json and https://artists.proofprofile.net/proofs/artist/8032c074-3a9f-4a82-bfc4-ffb49738bdfa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T21:12:18Z
  text: {"copyright_id":"0x4ae22442d7a642146265e84ba171dd49b5b8fd1c33a6a9e5db1b522050a9cbf7","name":"Viviana Sofronitsky","registered_at":"2026-06-17T10:11:34Z","symbol":"NIM1362946","token_address":"0xcd91c78c74f05011066ecf60b0012033944c6851","type":"artist","uuid":"8032c074-3a9f-4a82-bfc4-ffb49738bdfa"}
album: Dussek: Complete Sonatas & Sonatinas
  type: MusicAlbum
  date published: 2024-02-28
track: Piano Sonata No. 2 in C Major, Op. 9 No. 2: II. Larghetto con espressione
  type: MusicRecording
  duration: PT4M14S
  duration ms: 254506
  explicit: false
  by artist: Jan Ladislav Dussek
  by artist: Viviana Sofronitsky
  in album: Dussek: Sonatas, Op. 9 & Op. 75, Vol. 6
    type: MusicAlbum
    date published: 2019-02-22
  genre: classical
  genre: classical-piano
  isrc code: NLY331806360
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-08-01T00:30:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x41150d5f77e328be6c5c33ce4acbd48c13f41cd4627c1bef617969838586ee82
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960489
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960489
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331806360
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-08-01T00:40:43Z
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41150d5f77e328be6c5c33ce4acbd48c13f41cd4627c1bef617969838586ee82. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NLY331806360.
    date published: 2026-08-01T00:40:43Z
  audio: Piano Sonata No. 2 in C Major, Op. 9 No. 2: II. Larghetto con espressione
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.903
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.5
    additional property: Energy
      type: PropertyValue
      value: 0.08
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.984
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.914
    additional property: Liveness
      type: PropertyValue
      value: 0.097
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.303
    additional property: Loudness (dB)
      type: PropertyValue
      value: -28.855
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor