桃乃未琴
type: MusicGroup
popularity: 3
followers: 374
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0886791fc308680491028cd8d7cc962c7c77e108300342adb86335041a224557
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9564037f-5ef5-4255-a29f-571b2a4b8379.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9564037f-5ef5-4255-a29f-571b2a4b8379.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9564037f-5ef5-4255-a29f-571b2a4b8379
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0886791fc308680491028cd8d7cc962c7c77e108300342adb86335041a224557","name":"桃乃未琴","registered_at":"2026-06-17T17:46:14Z","symbol":"NIM1471358","token_address":"0xdd6ea9f683004a2764f2d811b81955b878343a11","type":"artist","uuid":"9564037f-5ef5-4255-a29f-571b2a4b8379"}
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 0x0886791fc308680491028cd8d7cc962c7c77e108300342adb86335041a224557. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9564037f-5ef5-4255-a29f-571b2a4b8379.json and https://artists.proofprofile.net/proofs/artist/9564037f-5ef5-4255-a29f-571b2a4b8379.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x0886791fc308680491028cd8d7cc962c7c77e108300342adb86335041a224557","name":"桃乃未琴","registered_at":"2026-06-17T17:46:14Z","symbol":"NIM1471358","token_address":"0xdd6ea9f683004a2764f2d811b81955b878343a11","type":"artist","uuid":"9564037f-5ef5-4255-a29f-571b2a4b8379"}
album: あなたは海の底
  type: MusicAlbum
  date published: 1997-07-24
  track: あなたは海の底
    type: MusicRecording
    duration: PT5M6S
    duration ms: 306533
    explicit: false
    by artist: 桃乃未琴
    in album: あなたは海の底
      type: MusicAlbum
      date published: 1997-07-24
    isrc code: JPVI09708970
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T03:20:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf7e0fc6afd90dd4827919d6b196b7fdb7519e197ba299a2214f8e5d28621c72a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09708970
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0xf7e0fc6afd90dd4827919d6b196b7fdb7519e197ba299a2214f8e5d28621c72a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPVI09708970.
      date published: 2026-07-06T06:56:49Z
    audio: あなたは海の底
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.043
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.453
      additional property: Energy
        type: PropertyValue
        value: 0.925
      additional property: Speechiness
        type: PropertyValue
        value: 0.07
      additional property: Acousticness
        type: PropertyValue
        value: 0.014
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.091
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.218
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.153
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Sour Milk Sea
  type: MusicAlbum
  date published: 1997-08-21
album: 幸あれ乙女／生きてる身体
  type: MusicAlbum
  date published: 1997-11-21
album: はじめてのうた
  type: MusicAlbum
  date published: 1998-02-21
album: 愛したい
  type: MusicAlbum
  date published: 1998-05-21
album: サボテン
  type: MusicAlbum
  date published: 1998-06-24
album: 花
  type: MusicAlbum
  date published: 1999-02-24
album: この夜が明けないのならば
  type: MusicAlbum
  date published: 1999-06-23
album: 空
  type: MusicAlbum
  date published: 1999-10-21
album: 処方箋
  type: MusicAlbum
  date published: 2000-01-08
album: 青いトゲ
  type: MusicAlbum
  date published: 2000-05-24
album: 大切なコト
  type: MusicAlbum
  date published: 2000-12-16
album: 地気遊戯
  type: MusicAlbum
  date published: 2001-02-21