Kartman
type: MusicGroup
genre: hardcore techno
genre: hard house
popularity: 4
followers: 152
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb0cc29b19aa7b247b09258c26181b9515f2527311440eb52c185bbd4eaeef2d0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9fc6a2c7-190e-4c25-9cf2-d62a537277db.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9fc6a2c7-190e-4c25-9cf2-d62a537277db.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9fc6a2c7-190e-4c25-9cf2-d62a537277db
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
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 0xb0cc29b19aa7b247b09258c26181b9515f2527311440eb52c185bbd4eaeef2d0. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fc6a2c7-190e-4c25-9cf2-d62a537277db.json and https://artists.proofprofile.net/proofs/artist/9fc6a2c7-190e-4c25-9cf2-d62a537277db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
album: Soul Melody
  type: MusicAlbum
  date published: 2012-07-05
album: Happy Jump
  type: MusicAlbum
  date published: 2012-08-23
album: Party Scratch
  type: MusicAlbum
  date published: 2013-03-20
album: Lala Song
  type: MusicAlbum
  date published: 2013-03-21
album: Bigbang
  type: MusicAlbum
  date published: 2013-08-15
album: Hopship
  type: MusicAlbum
  date published: 2013-10-03
album: Try to Be
  type: MusicAlbum
  date published: 2014-04-10
album: Back The Jump
  type: MusicAlbum
  date published: 2023-05-19
album: The Bomba
  type: MusicAlbum
  date published: 2024-07-12
  track: The Bomba
    type: MusicRecording
    duration: PT2M3S
    duration ms: 123529
    explicit: false
    by artist: Kartman
    in album: The Bomba
      type: MusicAlbum
      date published: 2024-07-12
    genre: hardcore techno
    genre: hard house
    isrc code: QM7282400888
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T22:52:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0f07a73ed2bdabccc0f6340cafac94a41cef8aacd8741f20385340f241dd0e8e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282400888
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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 0x0f07a73ed2bdabccc0f6340cafac94a41cef8aacd8741f20385340f241dd0e8e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM7282400888.
      date published: 2026-07-06T01:26:17Z
    audio: The Bomba
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 154.983
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.463
      additional property: Energy
        type: PropertyValue
        value: 0.988
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0.014
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.787
      additional property: Liveness
        type: PropertyValue
        value: 0.093
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.518
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.752
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major