Česká muzika
type: MusicGroup
genre: polka
popularity: 3
followers: 331
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x25015f142456dc8a9b4ccf240a8bb7e905783cd5c43e00dd59f025fe09e1e6d1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bfcdd18f-2a29-415d-907d-b595fc984fe0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bfcdd18f-2a29-415d-907d-b595fc984fe0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bfcdd18f-2a29-415d-907d-b595fc984fe0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x25015f142456dc8a9b4ccf240a8bb7e905783cd5c43e00dd59f025fe09e1e6d1","name":"Česká muzika","registered_at":"2026-06-20T19:08:03Z","symbol":"NIM1685781","token_address":"0x9fa03dd838151530ff8ed9124fed492a154b592b","type":"artist","uuid":"bfcdd18f-2a29-415d-907d-b595fc984fe0"}
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 0x25015f142456dc8a9b4ccf240a8bb7e905783cd5c43e00dd59f025fe09e1e6d1. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfcdd18f-2a29-415d-907d-b595fc984fe0.json and https://artists.proofprofile.net/proofs/artist/bfcdd18f-2a29-415d-907d-b595fc984fe0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x25015f142456dc8a9b4ccf240a8bb7e905783cd5c43e00dd59f025fe09e1e6d1","name":"Česká muzika","registered_at":"2026-06-20T19:08:03Z","symbol":"NIM1685781","token_address":"0x9fa03dd838151530ff8ed9124fed492a154b592b","type":"artist","uuid":"bfcdd18f-2a29-415d-907d-b595fc984fe0"}
album: Mělnické Víno
  type: MusicAlbum
  date published: 1972
album: Kdyby Všichni Muzikanti
  type: MusicAlbum
  date published: 1977
album: Naši Jubilanti - Josef Poncar, Karel Vacek, Jaromír Vejvoda
  type: MusicAlbum
  date published: 1978
album: Česká Muzika Pochoduje
  type: MusicAlbum
  date published: 1980
album: Naši jubilanti (Poncar-Vejvoda-Vacek)
  type: MusicAlbum
  date published: 2013-03-22
track: Před vejtoňskou hospodou
  type: MusicRecording
  duration: PT2M45S
  duration ms: 165000
  explicit: false
  by artist: Josef Zíma
  by artist: Josef Charvát
  by artist: Česká muzika
  in album: Karel Hašler (Nejslavnější písničky)
    type: MusicAlbum
    date published: 2019-11-01
  isrc code: CZA166800294
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T04:47:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x04f4ae9430b0d70a6da195ae7d8a93e1af2802f8613167d20ea8b237c7c8e6fa
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA166800294
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x04f4ae9430b0d70a6da195ae7d8a93e1af2802f8613167d20ea8b237c7c8e6fa. 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/CZA166800294.
    date published: 2026-07-08T03:20:19Z
  audio: Před vejtoňskou hospodou
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 119.365
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.752
    additional property: Energy
      type: PropertyValue
      value: 0.41
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.892
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.164
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.934
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.446
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major