Zdenka Predna
type: MusicGroup
popularity: 16
followers: 841
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71dff8bb2e1282b6985936e81e10d7ed5c09919b93bbf1eefa7457f9d62959e8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953758
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953758
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b309593c-5f2c-4a4f-ac65-ba3ee7984f0e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b309593c-5f2c-4a4f-ac65-ba3ee7984f0e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b309593c-5f2c-4a4f-ac65-ba3ee7984f0e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T07:48:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x71dff8bb2e1282b6985936e81e10d7ed5c09919b93bbf1eefa7457f9d62959e8","name":"Zdenka Predna","registered_at":"2026-06-14T23:26:13Z","symbol":"NIM0609912","token_address":"0x7f26e86c37b414ea162a742ff2220ce36a85195c","type":"artist","uuid":"b309593c-5f2c-4a4f-ac65-ba3ee7984f0e"}
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 0x71dff8bb2e1282b6985936e81e10d7ed5c09919b93bbf1eefa7457f9d62959e8. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b309593c-5f2c-4a4f-ac65-ba3ee7984f0e.json and https://artists.proofprofile.net/proofs/artist/b309593c-5f2c-4a4f-ac65-ba3ee7984f0e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T07:48:25Z
  text: {"copyright_id":"0x71dff8bb2e1282b6985936e81e10d7ed5c09919b93bbf1eefa7457f9d62959e8","name":"Zdenka Predna","registered_at":"2026-06-14T23:26:13Z","symbol":"NIM0609912","token_address":"0x7f26e86c37b414ea162a742ff2220ce36a85195c","type":"artist","uuid":"b309593c-5f2c-4a4f-ac65-ba3ee7984f0e"}
album: Amulet
  type: MusicAlbum
  date published: 2013-10-10
track: More
  type: MusicRecording
  duration: PT4M26S
  duration ms: 266000
  explicit: false
  by artist: Polemic
  by artist: Pavol Habera
  by artist: Matej Ruppert
  by artist: Zdenka Predna
  by artist: Lenka Dusilová
  in album: Hey! Ba-Ba-Re-Bop
    type: MusicAlbum
    date published: 2015-09-17
  isrc code: SKB811300310
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T18:11:33+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x837bf1b3ed4937e6c8451e335973205340c3c7391feff15d0409206eb0968d50
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SKB811300310
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0x837bf1b3ed4937e6c8451e335973205340c3c7391feff15d0409206eb0968d50. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SKB811300310.
    date published: 2026-07-08T08:56:20Z
  audio: More
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 165.735
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.671
    additional property: Energy
      type: PropertyValue
      value: 0.617
    additional property: Speechiness
      type: PropertyValue
      value: 0.194
    additional property: Acousticness
      type: PropertyValue
      value: 0.331
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.007
    additional property: Liveness
      type: PropertyValue
      value: 0.079
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.937
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.815
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: You [Mix Cut] - Club Mix
  type: MusicRecording
  duration: PT5M46S
  duration ms: 346600
  explicit: false
  by artist: Robert Burian
  by artist: Zdenka Predna
  in album: Las Vegas '10 (Mixed Version)
    type: MusicAlbum
    date published: 2010-02-12
  genre: slovak-electronic
  isrc code: NLF711102027
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T14:33:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbb3d526be12f96b3cd3705229d658c88fb2f3c39e53ffa3a88436b166a5c98db
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711102027
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0xbb3d526be12f96b3cd3705229d658c88fb2f3c39e53ffa3a88436b166a5c98db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLF711102027.
    date published: 2026-07-08T08:56:20Z
  audio: You [Mix Cut] - Club Mix
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 140.328
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.499
    additional property: Energy
      type: PropertyValue
      value: 0.797
    additional property: Speechiness
      type: PropertyValue
      value: 0.081
    additional property: Acousticness
      type: PropertyValue
      value: 0
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Liveness
type: PropertyValue
value: 0.824

Valence (Positivity)
type: PropertyValue
value: 0.116

Loudness (dB)
type: PropertyValue
value: -12.555

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Minor