西園寺琴歌 (CV: 安齋由香里)
type: MusicGroup
popularity: 13
followers: 255
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf9ebb5d1faf1ee37d3f77e9eae00577ec0b6c5c7cfa7f1b3f3ba12ba088c9b6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2839833b-aef0-4c0f-b8c8-06d2d521a810.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2839833b-aef0-4c0f-b8c8-06d2d521a810.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2839833b-aef0-4c0f-b8c8-06d2d521a810
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcf9ebb5d1faf1ee37d3f77e9eae00577ec0b6c5c7cfa7f1b3f3ba12ba088c9b6","name":"西園寺琴歌 (CV: 安齋由香里)","registered_at":"2026-06-14T08:36:24Z","symbol":"NIM0397661","token_address":"0x95d1fd24a762911ee1bc1d6da30e0c0def8cfe9b","type":"artist","uuid":"2839833b-aef0-4c0f-b8c8-06d2d521a810"}
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 0xcf9ebb5d1faf1ee37d3f77e9eae00577ec0b6c5c7cfa7f1b3f3ba12ba088c9b6. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2839833b-aef0-4c0f-b8c8-06d2d521a810.json and https://artists.proofprofile.net/proofs/artist/2839833b-aef0-4c0f-b8c8-06d2d521a810.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:37:06Z
  text: {"copyright_id":"0xcf9ebb5d1faf1ee37d3f77e9eae00577ec0b6c5c7cfa7f1b3f3ba12ba088c9b6","name":"西園寺琴歌 (CV: 安齋由香里)","registered_at":"2026-06-14T08:36:24Z","symbol":"NIM0397661","token_address":"0x95d1fd24a762911ee1bc1d6da30e0c0def8cfe9b","type":"artist","uuid":"2839833b-aef0-4c0f-b8c8-06d2d521a810"}
album: さやけき花の生命に (GAME VERSION)
  type: MusicAlbum
  date published: 2023-04-03
album: セレブレイト・スターレイル (GAME VERSION)
  type: MusicAlbum
  date published: 2023-06-07
  track: セレブレイト・スターレイル - GAME VERSION
    type: MusicRecording
    duration: PT2M2S
    duration ms: 122138
    explicit: false
    by artist: 西園寺琴歌 (CV: 安齋由香里)
    in album: セレブレイト・スターレイル (GAME VERSION)
      type: MusicAlbum
      date published: 2023-06-07
    isrc code: JPCO02320750
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T18:05:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x617791b5361370c4f5fc8950a3a2b1ed99a21583018aee621948752ab630ec49
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO02320750
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x617791b5361370c4f5fc8950a3a2b1ed99a21583018aee621948752ab630ec49. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPCO02320750.
      date published: 2026-07-05T01:12:41Z
    audio: セレブレイト・スターレイル - GAME VERSION
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 174.143
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.591
      additional property: Energy
        type: PropertyValue
        value: 0.939
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.057
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.331
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.826
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.44
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: THE IDOLM@STER CINDERELLA GIRLS STARLIGHT MASTER PLATINUM NUMBER 09 さやけき花の生命に
  type: MusicAlbum
  date published: 2023-09-20