永大附属高等学校箏曲部
type: MusicGroup
genre: japanese classical
popularity: 6
followers: 25
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe6e5c5fd6731f1750fa2d47f26d1de00a32f38ead1e4b3e5f5351d04f85a103e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/99cea056-5f8b-45d5-b2ca-faa554efdd05.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/99cea056-5f8b-45d5-b2ca-faa554efdd05.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/99cea056-5f8b-45d5-b2ca-faa554efdd05
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe6e5c5fd6731f1750fa2d47f26d1de00a32f38ead1e4b3e5f5351d04f85a103e","name":"永大附属高等学校箏曲部","registered_at":"2026-06-17T19:21:19Z","symbol":"NIM1494045","token_address":"0xc047ec59a2623826b5e436b18d83b7536715b991","type":"artist","uuid":"99cea056-5f8b-45d5-b2ca-faa554efdd05"}
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e5c5fd6731f1750fa2d47f26d1de00a32f38ead1e4b3e5f5351d04f85a103e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99cea056-5f8b-45d5-b2ca-faa554efdd05.json and https://artists.proofprofile.net/proofs/artist/99cea056-5f8b-45d5-b2ca-faa554efdd05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xe6e5c5fd6731f1750fa2d47f26d1de00a32f38ead1e4b3e5f5351d04f85a103e","name":"永大附属高等学校箏曲部","registered_at":"2026-06-17T19:21:19Z","symbol":"NIM1494045","token_address":"0xc047ec59a2623826b5e436b18d83b7536715b991","type":"artist","uuid":"99cea056-5f8b-45d5-b2ca-faa554efdd05"}
track: さらし風手事
  type: MusicRecording
  duration: PT5M32S
  duration ms: 332466
  explicit: false
  by artist: 永大附属高等学校箏曲部
  in album: この音とまれ!～時瀬高等学校箏曲部～
    type: MusicAlbum
    date published: 2017-03-08
  isrc code: JPKI01710867
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-19T03:37:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xda5923ab9a15f5816863ab4e4ebb809e684141782023f5dd83a4524c4553ba0e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPKI01710867
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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 0xda5923ab9a15f5816863ab4e4ebb809e684141782023f5dd83a4524c4553ba0e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPKI01710867.
    date published: 2026-07-02T03:30:09Z
  audio: さらし風手事
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 106.459
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
      value: 0.318
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.898
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.891
    additional property: Liveness
      type: PropertyValue
      value: 0.052
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.562
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.562
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor