Ivan Krajícek
type: MusicGroup
popularity: 13
followers: 1124
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71e37045d0f3aea228e094c68ab2f2d5f5ad15f0e69bb48fa9557d6bf2aec026
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2c3d548-1c2c-4073-a36d-eab46c8dd845.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2c3d548-1c2c-4073-a36d-eab46c8dd845.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a2c3d548-1c2c-4073-a36d-eab46c8dd845
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x71e37045d0f3aea228e094c68ab2f2d5f5ad15f0e69bb48fa9557d6bf2aec026","name":"Ivan Krajícek","registered_at":"2026-06-14T21:36:46Z","symbol":"NIM0583785","token_address":"0xb1feeef05c3311e1cbd063a5bd367d816c95efb3","type":"artist","uuid":"a2c3d548-1c2c-4073-a36d-eab46c8dd845"}
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 0x71e37045d0f3aea228e094c68ab2f2d5f5ad15f0e69bb48fa9557d6bf2aec026. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2c3d548-1c2c-4073-a36d-eab46c8dd845.json and https://artists.proofprofile.net/proofs/artist/a2c3d548-1c2c-4073-a36d-eab46c8dd845.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x71e37045d0f3aea228e094c68ab2f2d5f5ad15f0e69bb48fa9557d6bf2aec026","name":"Ivan Krajícek","registered_at":"2026-06-14T21:36:46Z","symbol":"NIM0583785","token_address":"0xb1feeef05c3311e1cbd063a5bd367d816c95efb3","type":"artist","uuid":"a2c3d548-1c2c-4073-a36d-eab46c8dd845"}
album: Priamy prenos
  type: MusicAlbum
  date published: 1993-06-24
album: 20 Naj
  type: MusicAlbum
  date published: 2006
album: 20 naj
  type: MusicAlbum
  date published: 2006-01-01
  track: Svetová sláva
    type: MusicRecording
    duration: PT2M23S
    duration ms: 143413
    explicit: false
    by artist: Ivan Krajícek
    in album: 20 naj
      type: MusicAlbum
      date published: 2006-01-01
    isrc code: SKA120310815
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T12:28:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa1a52e6780ba14c44cb9ea543931daba651474506aab5332ea6a751f2da0e8ec
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958880
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958880
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SKA120310815
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T15:31:18Z
    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 0xa1a52e6780ba14c44cb9ea543931daba651474506aab5332ea6a751f2da0e8ec. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:31:18Z), 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/SKA120310815.
      date published: 2026-07-20T15:31:18Z
    audio: Svetová sláva
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 206.56
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.36
      additional property: Energy
        type: PropertyValue
        value: 0.753
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.231
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.015
      additional property: Liveness
        type: PropertyValue
        value: 0.057
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.834
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.598
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major