Zezna
type: MusicGroup
genre: ska
popularity: 5
followers: 448
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x16843d0d2b01504cfd7ada3425bed613abcf86b089e0e1e607311783d6fc0e30
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b25d3fab-e5d1-446c-8302-9f84639149eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b25d3fab-e5d1-446c-8302-9f84639149eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b25d3fab-e5d1-446c-8302-9f84639149eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
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 0x16843d0d2b01504cfd7ada3425bed613abcf86b089e0e1e607311783d6fc0e30. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b25d3fab-e5d1-446c-8302-9f84639149eb.json and https://artists.proofprofile.net/proofs/artist/b25d3fab-e5d1-446c-8302-9f84639149eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
album: Tumbame
  type: MusicAlbum
  date published: 2021-06-25
album: Jodido fantasma
  type: MusicAlbum
  date published: 2021-06-25
album: La flor
  type: MusicAlbum
  date published: 2021-06-25
album: Hike
  type: MusicAlbum
  date published: 2021-06-25
album: Palabritas
  type: MusicAlbum
  date published: 2021-06-25
album: Frutos malditos
  type: MusicAlbum
  date published: 2021-06-25
album: Te arrepentiras
  type: MusicAlbum
  date published: 2021-06-25
album: Escapar
  type: MusicAlbum
  date published: 2021-06-25
album: El
  type: MusicAlbum
  date published: 2021-06-25
album: Frutos malditos
  type: MusicAlbum
  date published: 2022-08-04
album: Te arrepentiras
  type: MusicAlbum
  date published: 2023-03-09
album: La flor (2023)
  type: MusicAlbum
  date published: 2023-06-29
album: Palabritas (2023)
  type: MusicAlbum
  date published: 2023-06-29
  track: Palabritas (2023)
    type: MusicRecording
    duration: PT3M53S
    duration ms: 233286
    explicit: false
    by artist: Zezna
    in album: Palabritas (2023)
      type: MusicAlbum
      date published: 2023-06-29
    genre: ska
    isrc code: QZNWQ2306191
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:33:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9f100bcdf5a2924656e67c411959a533f1e3986e72da6e0d2bcf9b91ad812c49
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958834
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958834
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2306191
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T08:36:53Z
    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 0x9f100bcdf5a2924656e67c411959a533f1e3986e72da6e0d2bcf9b91ad812c49. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:36:53Z), 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/QZNWQ2306191.
      date published: 2026-07-20T08:36:53Z
    audio: Palabritas (2023)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.888
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.434
      additional property: Energy
        type: PropertyValue
        value: 0.857
      additional property: Speechiness
        type: PropertyValue
        value: 0.099
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.06
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.355
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.214
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Mentes atrapadas (2023)
  type: MusicAlbum
  date published: 2023-06-30
album: Cuando el sol se oculte
  type: MusicAlbum
  date published: 2023-10-11
album: Mentes atrapdas
  type: MusicAlbum
  date published: 2025-02-01
album: Te Arrepentirás
  type: MusicAlbum
  date published: 2025-02-15
album: Palabritas
  type: MusicAlbum
  date published: 2025-02-17