Kazufumi Kodama & Undefined
type: MusicGroup
genre: dub
genre: dub techno
popularity: 4
followers: 584
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe5d330b9ba43e93d7637c57b5ee44b06c5c728dafbe93cc5156f7b0240fa9de8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954025
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954025
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3877b97d-e3d4-462f-8e70-5f7c0766ad92.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3877b97d-e3d4-462f-8e70-5f7c0766ad92.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3877b97d-e3d4-462f-8e70-5f7c0766ad92
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:32:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe5d330b9ba43e93d7637c57b5ee44b06c5c728dafbe93cc5156f7b0240fa9de8","name":"Kazufumi Kodama & Undefined","registered_at":"2026-06-16T09:12:48Z","symbol":"NIM1005391","token_address":"0x2d72d88ba91bb1f166dd46b312c8c9cc1908d6d1","type":"artist","uuid":"3877b97d-e3d4-462f-8e70-5f7c0766ad92"}
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 0xe5d330b9ba43e93d7637c57b5ee44b06c5c728dafbe93cc5156f7b0240fa9de8. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3877b97d-e3d4-462f-8e70-5f7c0766ad92.json and https://artists.proofprofile.net/proofs/artist/3877b97d-e3d4-462f-8e70-5f7c0766ad92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:32:47Z
  text: {"copyright_id":"0xe5d330b9ba43e93d7637c57b5ee44b06c5c728dafbe93cc5156f7b0240fa9de8","name":"Kazufumi Kodama & Undefined","registered_at":"2026-06-16T09:12:48Z","symbol":"NIM1005391","token_address":"0x2d72d88ba91bb1f166dd46b312c8c9cc1908d6d1","type":"artist","uuid":"3877b97d-e3d4-462f-8e70-5f7c0766ad92"}
album: 2 Years / 2 Years in Silence
  type: MusicAlbum
  date published: 2022-09-21
  track: Pale Purple Flower
    type: MusicRecording
    duration: PT4M48S
    duration ms: 288000
    explicit: false
    by artist: Kazufumi Kodama & Undefined
    in album: 2 Years / 2 Years in Silence
      type: MusicAlbum
      date published: 2022-09-21
    genre: dub
    genre: dub techno
    isrc code: JPB622201267
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T15:50:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xea98422e4a599963682c0092dfbb8d48500d32a269bf35a48d21681791609ac3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958908
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958908
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB622201267
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T18:53:39Z
    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 0xea98422e4a599963682c0092dfbb8d48500d32a269bf35a48d21681791609ac3. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:39Z), 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/JPB622201267.
      date published: 2026-07-20T18:53:39Z
    audio: Pale Purple Flower
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.014
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.832
      additional property: Energy
        type: PropertyValue
        value: 0.598
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.148
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.553
      additional property: Liveness
        type: PropertyValue
        value: 0.128
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.58
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.717
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor