Eva Martinová
type: MusicGroup
popularity: 3
followers: 73
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x489e0651a848f5f2a790062219b4c09a09a2b7e762e4ac9443d5e2ecb9cba3d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/499332a0-a169-4036-afd5-d23f25480aef.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/499332a0-a169-4036-afd5-d23f25480aef.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/499332a0-a169-4036-afd5-d23f25480aef
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x489e0651a848f5f2a790062219b4c09a09a2b7e762e4ac9443d5e2ecb9cba3d8","name":"Eva Martinová","registered_at":"2026-06-16T15:11:08Z","symbol":"NIM1090874","token_address":"0x4528f275dcb7fb1af87e1b20de7d9b294f1024ac","type":"artist","uuid":"499332a0-a169-4036-afd5-d23f25480aef"}
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 0x489e0651a848f5f2a790062219b4c09a09a2b7e762e4ac9443d5e2ecb9cba3d8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/499332a0-a169-4036-afd5-d23f25480aef.json and https://artists.proofprofile.net/proofs/artist/499332a0-a169-4036-afd5-d23f25480aef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x489e0651a848f5f2a790062219b4c09a09a2b7e762e4ac9443d5e2ecb9cba3d8","name":"Eva Martinová","registered_at":"2026-06-16T15:11:08Z","symbol":"NIM1090874","token_address":"0x4528f275dcb7fb1af87e1b20de7d9b294f1024ac","type":"artist","uuid":"499332a0-a169-4036-afd5-d23f25480aef"}
album: Eva Martinová
  type: MusicAlbum
  date published: 2013-08-30
  track: Ananas Z Caracasu
    type: MusicRecording
    duration: PT2M38S
    duration ms: 158960
    explicit: false
    by artist: Eva Martinová
    in album: Eva Martinová
      type: MusicAlbum
      date published: 2013-08-30
    isrc code: CZA161200714
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T20:18:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x705fe332e2408adfb39c9edde638104a0eaa6b30eae7882423a682e093b39f3c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958931
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958931
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161200714
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:15:01Z
    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 0x705fe332e2408adfb39c9edde638104a0eaa6b30eae7882423a682e093b39f3c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CZA161200714.
      date published: 2026-07-20T21:15:01Z
    audio: Ananas Z Caracasu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 109.122
      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: 0.622
      additional property: Energy
        type: PropertyValue
        value: 0.394
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.719
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.096
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.822
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.59
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Eva Martinová (Romeo a Julie, Když chlapci se loučí, Ananas z Caracasu a další)
  type: MusicAlbum
  date published: 2013-08-30