柳 小春(CV :七木奏音)
type: MusicGroup
popularity: 6
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4bb7c2c0d863d24a9315e2f1f8ad71aefc0cfd992beb1f2b9c034d9c7054c046
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953871
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953871
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/073637d6-0e00-424f-bb9e-904ebef844fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/073637d6-0e00-424f-bb9e-904ebef844fa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/073637d6-0e00-424f-bb9e-904ebef844fa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:46:03Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4bb7c2c0d863d24a9315e2f1f8ad71aefc0cfd992beb1f2b9c034d9c7054c046","name":"柳 小春(CV :七木奏音)","registered_at":"2026-06-15T16:07:34Z","symbol":"NIM0760659","token_address":"0x372a1b63994ffe0fb133d81de611ba8d7c98d66d","type":"artist","uuid":"073637d6-0e00-424f-bb9e-904ebef844fa"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb7c2c0d863d24a9315e2f1f8ad71aefc0cfd992beb1f2b9c034d9c7054c046. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/073637d6-0e00-424f-bb9e-904ebef844fa.json and https://artists.proofprofile.net/proofs/artist/073637d6-0e00-424f-bb9e-904ebef844fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:46:03Z
  text: {"copyright_id":"0x4bb7c2c0d863d24a9315e2f1f8ad71aefc0cfd992beb1f2b9c034d9c7054c046","name":"柳 小春(CV :七木奏音)","registered_at":"2026-06-15T16:07:34Z","symbol":"NIM0760659","token_address":"0x372a1b63994ffe0fb133d81de611ba8d7c98d66d","type":"artist","uuid":"073637d6-0e00-424f-bb9e-904ebef844fa"}
track: 別れの戦記
  type: MusicRecording
  duration: PT4M10S
  duration ms: 250000
  explicit: false
  by artist: 天堂真矢(CV:富田麻帆)
  by artist: 花柳香子(CV:伊藤彩沙)
  by artist: 愛城華恋(CV:小山百代)
  by artist: 露崎まひる(CV：岩田陽葵)
  by artist: 大場なな(CV:小泉萌香)
  by artist: 石動双葉(CV:生田輝)
  by artist: 柳 小春(CV :七木奏音)
  by artist: 西條クロディーヌ(CV:相羽あいな)
  by artist: 星見純那(CV:佐藤日向)
  in album: 別れの戦記
    type: MusicAlbum
    date published: 2024-11-16
  isrc code: JPR562400333
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-18T08:56:55+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa63a87b32038006853fb6c63c607d40da1e0c1a14b721bca19c5ce742f05b45d
  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/JPR562400333
  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 0xa63a87b32038006853fb6c63c607d40da1e0c1a14b721bca19c5ce742f05b45d. 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/JPR562400333.
    date published: 2026-07-02T03:30:09Z
  audio: 別れの戦記
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 152
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.484
    additional property: Energy
      type: PropertyValue
      value: 0.906
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.003
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.207
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.593
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.65
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major