こだま和文
type: MusicGroup
genre: dub
genre: dub techno
genre: shibuya-kei
popularity: 7
followers: 3468
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x03a9c77803e494a7abdbe84e17c899c3eb63db41646f49d8d7627f02ab314cf2
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/8109e39f-4271-4970-a7b2-4edb7012ebdf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8109e39f-4271-4970-a7b2-4edb7012ebdf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8109e39f-4271-4970-a7b2-4edb7012ebdf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x03a9c77803e494a7abdbe84e17c899c3eb63db41646f49d8d7627f02ab314cf2","name":"こだま和文","registered_at":"2026-06-17T10:28:38Z","symbol":"NIM1367017","token_address":"0x240142062893f07ae308e2d18caedd2f0af56d68","type":"artist","uuid":"8109e39f-4271-4970-a7b2-4edb7012ebdf"}
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 0x03a9c77803e494a7abdbe84e17c899c3eb63db41646f49d8d7627f02ab314cf2. 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/8109e39f-4271-4970-a7b2-4edb7012ebdf.json and https://artists.proofprofile.net/proofs/artist/8109e39f-4271-4970-a7b2-4edb7012ebdf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x03a9c77803e494a7abdbe84e17c899c3eb63db41646f49d8d7627f02ab314cf2","name":"こだま和文","registered_at":"2026-06-17T10:28:38Z","symbol":"NIM1367017","token_address":"0x240142062893f07ae308e2d18caedd2f0af56d68","type":"artist","uuid":"8109e39f-4271-4970-a7b2-4edb7012ebdf"}
album: Requiem DUB
  type: MusicAlbum
  date published: 1999-09-22
album: STARS
  type: MusicAlbum
  date published: 2000-09-21
album: ピストルオペラ サウンドトラツク
  type: MusicAlbum
  date published: 2001-09-19
album: NAZO
  type: MusicAlbum
  date published: 2001-12-19
album: A SILENT PRAYER
  type: MusicAlbum
  date published: 2003-08-20
  track: LA BIRDS ROCK“遠雷”
    type: MusicRecording
    duration: PT5M8S
    duration ms: 308237
    explicit: false
    by artist: こだま和文
    in album: A SILENT PRAYER
      type: MusicAlbum
      date published: 2003-08-20
    genre: dub
    genre: dub techno
    genre: shibuya-kei
    isrc code: JPVI00314110
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T13:53:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x45eb627e6c86727a2115aa7323aefa3dfee653d6ac30fcfb74fa11d993a73c71
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00314110
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x45eb627e6c86727a2115aa7323aefa3dfee653d6ac30fcfb74fa11d993a73c71. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI00314110.
      date published: 2026-07-05T19:27:56Z
    audio: LA BIRDS ROCK“遠雷”
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.002
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.784
      additional property: Energy
        type: PropertyValue
        value: 0.501
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.011
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.866
      additional property: Liveness
        type: PropertyValue
        value: 0.086
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.672
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.429
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor