片山柊
type: MusicGroup
popularity: 10
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc268df86ea5275919b2d3af7c1c2ba3753088f6b6a7678cf4e933fd5102a1e9b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04ea9b4b-4bfa-4521-9e95-8ee23b43e712.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04ea9b4b-4bfa-4521-9e95-8ee23b43e712.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/04ea9b4b-4bfa-4521-9e95-8ee23b43e712
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc268df86ea5275919b2d3af7c1c2ba3753088f6b6a7678cf4e933fd5102a1e9b","name":"片山柊","registered_at":"2026-06-15T15:08:37Z","symbol":"NIM0746576","token_address":"0xb11b7e86faab3b2ebd1fa335298beb0e7a1ba8ec","type":"artist","uuid":"04ea9b4b-4bfa-4521-9e95-8ee23b43e712"}
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 0xc268df86ea5275919b2d3af7c1c2ba3753088f6b6a7678cf4e933fd5102a1e9b. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04ea9b4b-4bfa-4521-9e95-8ee23b43e712.json and https://artists.proofprofile.net/proofs/artist/04ea9b4b-4bfa-4521-9e95-8ee23b43e712.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0xc268df86ea5275919b2d3af7c1c2ba3753088f6b6a7678cf4e933fd5102a1e9b","name":"片山柊","registered_at":"2026-06-15T15:08:37Z","symbol":"NIM0746576","token_address":"0xb11b7e86faab3b2ebd1fa335298beb0e7a1ba8ec","type":"artist","uuid":"04ea9b4b-4bfa-4521-9e95-8ee23b43e712"}
album: Landscapes
  type: MusicAlbum
  date published: 2018-12-05
  track: 「鏡」より 第1曲:蛾
    type: MusicRecording
    duration: PT5M10S
    duration ms: 310000
    explicit: false
    by artist: 片山柊
    in album: Landscapes
      type: MusicAlbum
      date published: 2018-12-05
    isrc code: JPWP01801589
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T10:49:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc4c26a78210c33c07c9398b9d2f10276f86e63ba8c0c6319e803facbadffe819
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958401
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958401
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPWP01801589
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T11:10:25Z
    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 0xc4c26a78210c33c07c9398b9d2f10276f86e63ba8c0c6319e803facbadffe819. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPWP01801589 — a six-check JSON result.
      date published: 2026-07-17T11:10:25Z
    audio: 「鏡」より 第1曲:蛾
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 72.898
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.307
      additional property: Energy
        type: PropertyValue
        value: 0.06
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.99
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.883
      additional property: Liveness
        type: PropertyValue
        value: 0.368
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.039
      additional property: Loudness (dB)
        type: PropertyValue
        value: -26.442
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major