杵家七三社中
type: MusicGroup
genre: vocaloid
popularity: 4
followers: 298
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x812fe83e9e6b9cd4ff7360116465da180d48b4836fde1403878466491bdd314e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0cc7c2e-cfc3-4bd1-99fb-9d9f267df353.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0cc7c2e-cfc3-4bd1-99fb-9d9f267df353.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b0cc7c2e-cfc3-4bd1-99fb-9d9f267df353
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x812fe83e9e6b9cd4ff7360116465da180d48b4836fde1403878466491bdd314e","name":"杵家七三社中","registered_at":"2026-06-20T12:12:11Z","symbol":"NIM1610201","token_address":"0xd0b9517116939d66257dcd77e668d4cda3ecd444","type":"artist","uuid":"b0cc7c2e-cfc3-4bd1-99fb-9d9f267df353"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812fe83e9e6b9cd4ff7360116465da180d48b4836fde1403878466491bdd314e. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0cc7c2e-cfc3-4bd1-99fb-9d9f267df353.json and https://artists.proofprofile.net/proofs/artist/b0cc7c2e-cfc3-4bd1-99fb-9d9f267df353.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x812fe83e9e6b9cd4ff7360116465da180d48b4836fde1403878466491bdd314e","name":"杵家七三社中","registered_at":"2026-06-20T12:12:11Z","symbol":"NIM1610201","token_address":"0xd0b9517116939d66257dcd77e668d4cda3ecd444","type":"artist","uuid":"b0cc7c2e-cfc3-4bd1-99fb-9d9f267df353"}
album: 和楽花道中 杵家七三社中 傑作撰～ボカロ曲を演奏して戴いた～
  type: MusicAlbum
  date published: 2012-11-21
  track: 和楽・百年夜行
    type: MusicRecording
    duration: PT3M43S
    duration ms: 223026
    explicit: false
    by artist: 杵家七三社中
    in album: 和楽花道中 杵家七三社中 傑作撰～ボカロ曲を演奏して戴いた～
      type: MusicAlbum
      date published: 2012-11-21
    genre: vocaloid
    isrc code: JPB601290615
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T07:02:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x846ba50d22fcd18254cdb18f4ce8012c1c7b3cb8d717079e51e8716ed188feb3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601290615
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846ba50d22fcd18254cdb18f4ce8012c1c7b3cb8d717079e51e8716ed188feb3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPB601290615.
      date published: 2026-07-05T10:01:46Z
    audio: 和楽・百年夜行
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.993
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.516
      additional property: Energy
        type: PropertyValue
        value: 0.742
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.669
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.223
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.961
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.276
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor