kobu
type: MusicGroup
popularity: 4
followers: 184
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe815558666f13c0fe19b5ade1e4b2a1ddb085a22629da346ffed4475e72b79ec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa3c12e7-c7d8-4f4e-afe9-f42b8a597180.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa3c12e7-c7d8-4f4e-afe9-f42b8a597180.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fa3c12e7-c7d8-4f4e-afe9-f42b8a597180
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
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 0xe815558666f13c0fe19b5ade1e4b2a1ddb085a22629da346ffed4475e72b79ec. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa3c12e7-c7d8-4f4e-afe9-f42b8a597180.json and https://artists.proofprofile.net/proofs/artist/fa3c12e7-c7d8-4f4e-afe9-f42b8a597180.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
album: Fantasies Mixtape, Vol. 1
  type: MusicAlbum
  date published: 2022-12-31
  track: sanrio
    type: MusicRecording
    duration: PT1M36S
    duration ms: 96285
    explicit: false
    by artist: kobu
    in album: Fantasies Mixtape, Vol. 1
      type: MusicAlbum
      date published: 2022-12-31
    isrc code: QZTAS2255069
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T22:30:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1891f9d7d98a18c8912c9aefe3408f42cf494acc1acdc1daec88cbe83e2addae
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAS2255069
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x1891f9d7d98a18c8912c9aefe3408f42cf494acc1acdc1daec88cbe83e2addae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAS2255069.
      date published: 2026-07-04T10:04:33Z
    audio: sanrio
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.97
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.695
      additional property: Energy
        type: PropertyValue
        value: 0.526
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.822
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.897
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.708
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.554
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Meditation Mindset, Vol. 1
  type: MusicAlbum
  date published: 2023-01-23
album: Crypto
  type: MusicAlbum
  date published: 2023-02-04
album: Frontier Soundscapes, Vol. 1
  type: MusicAlbum
  date published: 2023-02-08
album: Stutter Step
  type: MusicAlbum
  date published: 2023-02-20
album: Silent Screams, Vol. 1
  type: MusicAlbum
  date published: 2024-02-04
album: Pixels
  type: MusicAlbum
  date published: 2024-03-03