ライラ（CV: 芹澤 優）
type: MusicGroup
popularity: 5
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4b26c8af76080a94cba73339bcaf49e300f8aa7baa6575f4349b9195ac121d1b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d03ce6d6-d0a8-4b5d-be03-b125a5ac64f5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d03ce6d6-d0a8-4b5d-be03-b125a5ac64f5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d03ce6d6-d0a8-4b5d-be03-b125a5ac64f5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4b26c8af76080a94cba73339bcaf49e300f8aa7baa6575f4349b9195ac121d1b","name":"ライラ（CV: 芹澤 優）","registered_at":"2026-06-21T00:34:10Z","symbol":"NIM1764427","token_address":"0xdaca3683591658a2f7e31ab30ba9f71f02e830d8","type":"artist","uuid":"d03ce6d6-d0a8-4b5d-be03-b125a5ac64f5"}
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 0x4b26c8af76080a94cba73339bcaf49e300f8aa7baa6575f4349b9195ac121d1b. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d03ce6d6-d0a8-4b5d-be03-b125a5ac64f5.json and https://artists.proofprofile.net/proofs/artist/d03ce6d6-d0a8-4b5d-be03-b125a5ac64f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x4b26c8af76080a94cba73339bcaf49e300f8aa7baa6575f4349b9195ac121d1b","name":"ライラ（CV: 芹澤 優）","registered_at":"2026-06-21T00:34:10Z","symbol":"NIM1764427","token_address":"0xdaca3683591658a2f7e31ab30ba9f71f02e830d8","type":"artist","uuid":"d03ce6d6-d0a8-4b5d-be03-b125a5ac64f5"}
album: 推しは英雄♡ (short ver.)
  type: MusicAlbum
  date published: 2025-02-08
  track: 推しは英雄♡ - short ver.
    type: MusicRecording
    duration: PT1M30S
    duration ms: 90896
    explicit: false
    by artist: ライラ（CV: 芹澤 優）
    in album: 推しは英雄♡ (short ver.)
      type: MusicAlbum
      date published: 2025-02-08
    isrc code: JPE302401325
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T01:23:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x91f3ecb223343974502726e89118a36b5a71ba762718a4a7dad2a8a91e54aaea
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE302401325
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0x91f3ecb223343974502726e89118a36b5a71ba762718a4a7dad2a8a91e54aaea. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPE302401325.
      date published: 2026-07-03T08:56:35Z
    audio: 推しは英雄♡ - short ver.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 165.075
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.609
      additional property: Energy
        type: PropertyValue
        value: 0.913
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.196
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.292
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.898
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.653
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major