Jana Kollertová
type: MusicGroup
popularity: 4
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x80a3cf4de419e3f0ea8fa4247790b2d59a2f017d77f74b18bf79fcb13cf48f83
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d35dce1b-821f-4895-b8fb-cfbbba73c298.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d35dce1b-821f-4895-b8fb-cfbbba73c298.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d35dce1b-821f-4895-b8fb-cfbbba73c298
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x80a3cf4de419e3f0ea8fa4247790b2d59a2f017d77f74b18bf79fcb13cf48f83","name":"Jana Kollertová","registered_at":"2026-06-21T01:53:46Z","symbol":"NIM1783511","token_address":"0x6030e7b5bfe0bca5bfcbe1f5c84cf9e565c53f80","type":"artist","uuid":"d35dce1b-821f-4895-b8fb-cfbbba73c298"}
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 0x80a3cf4de419e3f0ea8fa4247790b2d59a2f017d77f74b18bf79fcb13cf48f83. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d35dce1b-821f-4895-b8fb-cfbbba73c298.json and https://artists.proofprofile.net/proofs/artist/d35dce1b-821f-4895-b8fb-cfbbba73c298.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x80a3cf4de419e3f0ea8fa4247790b2d59a2f017d77f74b18bf79fcb13cf48f83","name":"Jana Kollertová","registered_at":"2026-06-21T01:53:46Z","symbol":"NIM1783511","token_address":"0x6030e7b5bfe0bca5bfcbe1f5c84cf9e565c53f80","type":"artist","uuid":"d35dce1b-821f-4895-b8fb-cfbbba73c298"}
track: O Princezně Rózce A Princi Josífkovi
  type: MusicRecording
  duration: PT2M1S
  duration ms: 121000
  explicit: false
  by artist: Jiří Kohout
  by artist: Anna Schmidtmajerová
  by artist: Hynek Chmelař
  by artist: Ondřej Nosálek
  by artist: Jana Kollertová
  by artist: Lucie Škodová
  by artist: Václav Jelínek
  by artist: Karel Kratochvíl
  by artist: Petr Besta
  in album: Písničky Filmových Princezen
    type: MusicAlbum
    date published: 2018-05-11
  popularity: 2
  isrc code: CZM021800006
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T01:00:31+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbc4470fba1197bb3a3f900e420e36c2adae840136a2d5996d5a14272ee116870
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960334
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960334
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZM021800006
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T02:19:15Z
  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 0xbc4470fba1197bb3a3f900e420e36c2adae840136a2d5996d5a14272ee116870. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CZM021800006.
    date published: 2026-07-31T02:19:15Z
  audio: O Princezně Rózce A Princi Josífkovi
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.654
    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: 0.666
    additional property: Energy
      type: PropertyValue
      value: 0.496
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.406
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.31
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.269
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.445
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor