Higurashi
type: MusicGroup
genre: city pop
genre: kayokyoku
popularity: 9
followers: 974
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x196b5a15633449c35e34dcbcbea76f422196d1bbf903baef71e91beb5321e787
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953955
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953955
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/244ecd27-7703-4864-907c-a0043bcbaa3a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/244ecd27-7703-4864-907c-a0043bcbaa3a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/244ecd27-7703-4864-907c-a0043bcbaa3a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:29:53Z
additional property: OTSCanonicalRecord
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 0x196b5a15633449c35e34dcbcbea76f422196d1bbf903baef71e91beb5321e787. Chain 2 (Bitcoin): anchored in block 953955 (2026-06-16T14:29:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/244ecd27-7703-4864-907c-a0043bcbaa3a.json and https://artists.proofprofile.net/proofs/artist/244ecd27-7703-4864-907c-a0043bcbaa3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:29:53Z
album: ありふれた出来事
  type: MusicAlbum
  date published: 1977
  track: いにしえ
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221600
    explicit: false
    by artist: Higurashi
    in album: ありふれた出来事
      type: MusicAlbum
      date published: 1977
    genre: city pop
    genre: kayokyoku
    isrc code: JPVI07705600
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T08:39:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9c51b8ad07f0380574b097394ac27b83cf4e63df43dac241d0dd8956b6718873
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958134
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958134
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI07705600
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T11:42:21Z
    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 0x9c51b8ad07f0380574b097394ac27b83cf4e63df43dac241d0dd8956b6718873. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:42:21Z), 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/JPVI07705600.
      date published: 2026-07-15T11:42:21Z
    audio: いにしえ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.442
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.554
      additional property: Energy
        type: PropertyValue
        value: 0.834
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.199
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.313
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.701
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.562
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 記憶の果実
  type: MusicAlbum
  date published: 1979
album: 日暮し2
  type: MusicAlbum
  date published: 2013-04-17
album: 日暮し
  type: MusicAlbum
  date published: 2013-04-17
album: 街風季節
  type: MusicAlbum
  date published: 2013-04-17
album: kimiiro ni somaru (Cover)
  type: MusicAlbum
  date published: 2021-12-18
album: YOKUBARI (Cover)
  type: MusicAlbum
  date published: 2023-05-27
album: YORU NADERU MENOU (Cover)
  type: MusicAlbum
  date published: 2023-12-16
album: STAR LIGHT (feat. IA)
  type: MusicAlbum
  date published: 2024-10-22
album: STAR LIGHT (feat. IA)
  type: MusicAlbum
  date published: 2024-10-22
album: INCUBUS (Cover)
  type: MusicAlbum
  date published: 2025-05-28
album: higannbana
  type: MusicAlbum
  date published: 2025-09-26
album: Matsuyukisou
  type: MusicAlbum
  date published: 2025-11-02
album: Juugoyasou
  type: MusicAlbum
  date published: 2025-11-02