Marcel Pokorný
type: MusicGroup
popularity: 6
followers: 317
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x934bbf38e11944da190a3a9ec4a4e1625486fd3b92e215ed7182f26cb12b2ea0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953968
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953968
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/280c1c99-457e-4b91-84b6-0dccdb570fd1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/280c1c99-457e-4b91-84b6-0dccdb570fd1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/280c1c99-457e-4b91-84b6-0dccdb570fd1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:01:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x934bbf38e11944da190a3a9ec4a4e1625486fd3b92e215ed7182f26cb12b2ea0","name":"Marcel Pokorný","registered_at":"2026-06-16T03:32:58Z","symbol":"NIM0924231","token_address":"0x04f0b3fd68937e4eda7b6e5ce34cc37c07e1cb4a","type":"artist","uuid":"280c1c99-457e-4b91-84b6-0dccdb570fd1"}
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 0x934bbf38e11944da190a3a9ec4a4e1625486fd3b92e215ed7182f26cb12b2ea0. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/280c1c99-457e-4b91-84b6-0dccdb570fd1.json and https://artists.proofprofile.net/proofs/artist/280c1c99-457e-4b91-84b6-0dccdb570fd1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x934bbf38e11944da190a3a9ec4a4e1625486fd3b92e215ed7182f26cb12b2ea0","name":"Marcel Pokorný","registered_at":"2026-06-16T03:32:58Z","symbol":"NIM0924231","token_address":"0x04f0b3fd68937e4eda7b6e5ce34cc37c07e1cb4a","type":"artist","uuid":"280c1c99-457e-4b91-84b6-0dccdb570fd1"}
album: Crossing the Danube
  type: MusicAlbum
  date published: 2020-01-10
  track: Crossing the Danube
    type: MusicRecording
    duration: PT2M3S
    duration ms: 123047
    explicit: false
    by artist: Marcel Pokorný
    in album: Crossing the Danube
      type: MusicAlbum
      date published: 2020-01-10
    isrc code: SCMP031313
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T21:27:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc6ab8605af68ce4ba85ef0d316de313817e5f19e4c2b87b25989372e34eafc8d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957761
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957761
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SCMP031313
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T21:55:15Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab8605af68ce4ba85ef0d316de313817e5f19e4c2b87b25989372e34eafc8d. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/SCMP031313.
      date published: 2026-07-12T21:55:15Z
    audio: Crossing the Danube
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 70.969
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.313
      additional property: Energy
        type: PropertyValue
        value: 0.028
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.993
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.902
      additional property: Liveness
        type: PropertyValue
        value: 0.105
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.193
      additional property: Loudness (dB)
        type: PropertyValue
        value: -25.058
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Hope
  type: MusicAlbum
  date published: 2023-05-19