ハッカドール
type: MusicGroup
genre: anime
popularity: 4
followers: 1085
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6d8899aec1ef56238b1362daeee055e34577cb3219cb1e032f0cc70680dcd46c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f91eda32-8211-4c91-8ab6-b06263f0a904.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f91eda32-8211-4c91-8ab6-b06263f0a904.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f91eda32-8211-4c91-8ab6-b06263f0a904
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6d8899aec1ef56238b1362daeee055e34577cb3219cb1e032f0cc70680dcd46c","name":"ハッカドール","registered_at":"2026-06-21T16:30:04Z","symbol":"NIM1973006","token_address":"0x71654f54441e0e54d0ce420c1b6ee5b5e74bb6f7","type":"artist","uuid":"f91eda32-8211-4c91-8ab6-b06263f0a904"}
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 0x6d8899aec1ef56238b1362daeee055e34577cb3219cb1e032f0cc70680dcd46c. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f91eda32-8211-4c91-8ab6-b06263f0a904.json and https://artists.proofprofile.net/proofs/artist/f91eda32-8211-4c91-8ab6-b06263f0a904.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x6d8899aec1ef56238b1362daeee055e34577cb3219cb1e032f0cc70680dcd46c","name":"ハッカドール","registered_at":"2026-06-21T16:30:04Z","symbol":"NIM1973006","token_address":"0x71654f54441e0e54d0ce420c1b6ee5b5e74bb6f7","type":"artist","uuid":"f91eda32-8211-4c91-8ab6-b06263f0a904"}
album: Happy Days Refrain
  type: MusicAlbum
  date published: 2015-11-25
album: Touch Tap Baby
  type: MusicAlbum
  date published: 2015-11-25
  track: Touch Tap Baby
    type: MusicRecording
    duration: PT3M38S
    duration ms: 218946
    explicit: false
    by artist: ハッカドール
    in album: Touch Tap Baby
      type: MusicAlbum
      date published: 2015-11-25
    genre: anime
    isrc code: JPT551500266
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T21:04:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf4b1aa1e791aa76d6e550b69596d59cf1a34b62c5bc95cb5eb5aedf93981adf9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPT551500266
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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 0xf4b1aa1e791aa76d6e550b69596d59cf1a34b62c5bc95cb5eb5aedf93981adf9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPT551500266.
      date published: 2026-07-05T04:47:21Z
    audio: Touch Tap Baby
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 161.996
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.556
      additional property: Energy
        type: PropertyValue
        value: 0.98
      additional property: Speechiness
        type: PropertyValue
        value: 0.084
      additional property: Acousticness
        type: PropertyValue
        value: 0.039
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.182
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.889
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.594
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major