Children Calavera
type: MusicGroup
popularity: 4
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e3eb6aec29fcce2b05cbc84f51da1c6db2c308e45b0dc84a378d2684012308e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8df75e1d-518a-4ef5-b9f7-9efd45e00429.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8df75e1d-518a-4ef5-b9f7-9efd45e00429.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8df75e1d-518a-4ef5-b9f7-9efd45e00429
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3e3eb6aec29fcce2b05cbc84f51da1c6db2c308e45b0dc84a378d2684012308e","name":"Children Calavera","registered_at":"2026-06-17T14:56:46Z","symbol":"NIM1430883","token_address":"0xa67f4e407a21792961a177a43366ce28e33dcebc","type":"artist","uuid":"8df75e1d-518a-4ef5-b9f7-9efd45e00429"}
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 0x3e3eb6aec29fcce2b05cbc84f51da1c6db2c308e45b0dc84a378d2684012308e. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8df75e1d-518a-4ef5-b9f7-9efd45e00429.json and https://artists.proofprofile.net/proofs/artist/8df75e1d-518a-4ef5-b9f7-9efd45e00429.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x3e3eb6aec29fcce2b05cbc84f51da1c6db2c308e45b0dc84a378d2684012308e","name":"Children Calavera","registered_at":"2026-06-17T14:56:46Z","symbol":"NIM1430883","token_address":"0xa67f4e407a21792961a177a43366ce28e33dcebc","type":"artist","uuid":"8df75e1d-518a-4ef5-b9f7-9efd45e00429"}
album: Un poquito más
  type: MusicAlbum
  date published: 2024-10-21
  track: Un poquito más
    type: MusicRecording
    duration: PT5M24S
    duration ms: 324893
    explicit: false
    by artist: Children Calavera
    in album: Un poquito más
      type: MusicAlbum
      date published: 2024-10-21
    isrc code: QZWFT2451691
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T23:57:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6320c926bc0d9862c28f2fe8d158837b42706c462ec4cb72a53630e6649f4619
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958798
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958798
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFT2451691
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T02:58:55Z
    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 0x6320c926bc0d9862c28f2fe8d158837b42706c462ec4cb72a53630e6649f4619. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:55Z), 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/QZWFT2451691.
      date published: 2026-07-20T02:58:55Z
    audio: Un poquito más
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.003
      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: 0.584
      additional property: Energy
        type: PropertyValue
        value: 0.788
      additional property: Speechiness
        type: PropertyValue
        value: 0.092
      additional property: Acousticness
        type: PropertyValue
        value: 0.025
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.008
      additional property: Liveness
        type: PropertyValue
        value: 0.27
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.179
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.18
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor