塚本功
type: MusicGroup
popularity: 13
followers: 524
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e722c88edf3ba7276c348c34dfe8f1baac2d1a4e96b12d5018f7717bdc14b02
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/281307a8-10b9-4d12-ae04-3bdd4e7cf7c7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/281307a8-10b9-4d12-ae04-3bdd4e7cf7c7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/281307a8-10b9-4d12-ae04-3bdd4e7cf7c7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0e722c88edf3ba7276c348c34dfe8f1baac2d1a4e96b12d5018f7717bdc14b02","name":"塚本功","registered_at":"2026-06-14T08:37:38Z","symbol":"NIM0397957","token_address":"0xda4ce2696021673d08f3df8a47c838dda2444b05","type":"artist","uuid":"281307a8-10b9-4d12-ae04-3bdd4e7cf7c7"}
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 0x0e722c88edf3ba7276c348c34dfe8f1baac2d1a4e96b12d5018f7717bdc14b02. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/281307a8-10b9-4d12-ae04-3bdd4e7cf7c7.json and https://artists.proofprofile.net/proofs/artist/281307a8-10b9-4d12-ae04-3bdd4e7cf7c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
  text: {"copyright_id":"0x0e722c88edf3ba7276c348c34dfe8f1baac2d1a4e96b12d5018f7717bdc14b02","name":"塚本功","registered_at":"2026-06-14T08:37:38Z","symbol":"NIM0397957","token_address":"0xda4ce2696021673d08f3df8a47c838dda2444b05","type":"artist","uuid":"281307a8-10b9-4d12-ae04-3bdd4e7cf7c7"}
album: ARCHES
  type: MusicAlbum
  date published: 2016-09-05
  track: Chai
    type: MusicRecording
    duration: PT4M25S
    duration ms: 265760
    explicit: false
    by artist: 塚本功
    in album: ARCHES
      type: MusicAlbum
      date published: 2016-09-05
    isrc code: JPJ901612120
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T21:53:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe75c7cd8d135779629e66404085893c8eea67f862ee2a8c55debeeafcbdc8c83
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957767
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957767
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPJ901612120
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T22:25:13Z
    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 0xe75c7cd8d135779629e66404085893c8eea67f862ee2a8c55debeeafcbdc8c83. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/JPJ901612120.
      date published: 2026-07-12T22:25:13Z
    audio: Chai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 107.433
      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: 0.792
      additional property: Energy
        type: PropertyValue
        value: 0.058
      additional property: Speechiness
        type: PropertyValue
        value: 0.093
      additional property: Acousticness
        type: PropertyValue
        value: 0.99
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.936
      additional property: Liveness
        type: PropertyValue
        value: 0.092
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.418
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.415
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major