夜乃すみ
type: MusicGroup
popularity: 5
followers: 178
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0027b533e27819938edb8527e79c356e29608fd90c19bb34d2ec559c024f51b3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954139
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954139
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7ff84fb2-fbe1-494a-9cc0-72c38395b4ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7ff84fb2-fbe1-494a-9cc0-72c38395b4ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7ff84fb2-fbe1-494a-9cc0-72c38395b4ab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T21:12:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0027b533e27819938edb8527e79c356e29608fd90c19bb34d2ec559c024f51b3","name":"夜乃すみ","registered_at":"2026-06-17T10:10:39Z","symbol":"NIM1362732","token_address":"0xa4d706c2bd6646c385bb35aaa53745b411482135","type":"artist","uuid":"7ff84fb2-fbe1-494a-9cc0-72c38395b4ab"}
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 0x0027b533e27819938edb8527e79c356e29608fd90c19bb34d2ec559c024f51b3. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ff84fb2-fbe1-494a-9cc0-72c38395b4ab.json and https://artists.proofprofile.net/proofs/artist/7ff84fb2-fbe1-494a-9cc0-72c38395b4ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0x0027b533e27819938edb8527e79c356e29608fd90c19bb34d2ec559c024f51b3","name":"夜乃すみ","registered_at":"2026-06-17T10:10:39Z","symbol":"NIM1362732","token_address":"0xa4d706c2bd6646c385bb35aaa53745b411482135","type":"artist","uuid":"7ff84fb2-fbe1-494a-9cc0-72c38395b4ab"}
album: キャットラビング (夜乃すみ Cover Ver.)
  type: MusicAlbum
  date published: 2022-12-24
album: よるのおと (feat. Ｍidnight Sketch)
  type: MusicAlbum
  date published: 2023-07-08
album: 優柔不断ラビリンス
  type: MusicAlbum
  date published: 2023-08-11
  track: 優柔不断ラビリンス
    type: MusicRecording
    duration: PT3M27S
    duration ms: 207977
    explicit: false
    by artist: 夜乃すみ
    in album: 優柔不断ラビリンス
      type: MusicAlbum
      date published: 2023-08-11
    isrc code: JPS532300209
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T23:51:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb9fd54524e726a50bc4f6e9ab36083bbdfe7ae1edcc8c3e1367d861ef4ee0889
    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/JPS532300209
    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 0xb9fd54524e726a50bc4f6e9ab36083bbdfe7ae1edcc8c3e1367d861ef4ee0889. 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/JPS532300209.
      date published: 2026-07-05T01:12:41Z
    audio: 優柔不断ラビリンス
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 178.034
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.497
      additional property: Energy
        type: PropertyValue
        value: 0.946
      additional property: Speechiness
        type: PropertyValue
        value: 0.195
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.024
      additional property: Liveness
        type: PropertyValue
        value: 0.253
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.686
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.45
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: オマジネーション
  type: MusicAlbum
  date published: 2023-09-01