Jitka Kubr
type: MusicGroup
popularity: 10
followers: 254
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x031a5a8125cce25f7c8b0b836cb592493f7a7c09a9676852885f3ebdd5b488ca
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c6c246b3-7267-4cec-b693-4f905ec81c06.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c6c246b3-7267-4cec-b693-4f905ec81c06.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c6c246b3-7267-4cec-b693-4f905ec81c06
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x031a5a8125cce25f7c8b0b836cb592493f7a7c09a9676852885f3ebdd5b488ca","name":"Jitka Kubr","registered_at":"2026-06-20T21:15:08Z","symbol":"NIM1717505","token_address":"0x32ea1b28e3c8a86f92da538f0cadc1b0bc505e71","type":"artist","uuid":"c6c246b3-7267-4cec-b693-4f905ec81c06"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a5a8125cce25f7c8b0b836cb592493f7a7c09a9676852885f3ebdd5b488ca. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6c246b3-7267-4cec-b693-4f905ec81c06.json and https://artists.proofprofile.net/proofs/artist/c6c246b3-7267-4cec-b693-4f905ec81c06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T22:44:50Z
  text: {"copyright_id":"0x031a5a8125cce25f7c8b0b836cb592493f7a7c09a9676852885f3ebdd5b488ca","name":"Jitka Kubr","registered_at":"2026-06-20T21:15:08Z","symbol":"NIM1717505","token_address":"0x32ea1b28e3c8a86f92da538f0cadc1b0bc505e71","type":"artist","uuid":"c6c246b3-7267-4cec-b693-4f905ec81c06"}
album: Komorebi
  type: MusicAlbum
  date published: 2019-06-01
album: Shouganai
  type: MusicAlbum
  date published: 2019-11-29
  track: Shouganai
    type: MusicRecording
    duration: PT2M12S
    duration ms: 132500
    explicit: false
    by artist: Jitka Kubr
    in album: Shouganai
      type: MusicAlbum
      date published: 2019-11-29
    isrc code: SE5W31912202
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T09:22:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdb5ba913cb3beed0878adab3e65246b7dd1388a725b30ea59a54648b38161bda
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958444
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958444
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5W31912202
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:12:23Z
    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
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5ba913cb3beed0878adab3e65246b7dd1388a725b30ea59a54648b38161bda. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5W31912202.
      date published: 2026-07-17T19:12:23Z
    audio: Shouganai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.273
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.486
      additional property: Energy
        type: PropertyValue
        value: 0.039
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.993
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.783
      additional property: Liveness
        type: PropertyValue
        value: 0.098
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.394
      additional property: Loudness (dB)
        type: PropertyValue
        value: -25.042
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Tekitou
  type: MusicAlbum
  date published: 2020-08-07
album: Natsukashii
  type: MusicAlbum
  date published: 2021-09-10