鳴海杏子
type: MusicGroup
genre: anime
popularity: 4
followers: 234
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9f879f93aeea0c06122d0ef60ff6eff158190493604ed30b8bc9e278479025e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ff2217fe-af80-4d02-ad4d-84ace22ac7cc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ff2217fe-af80-4d02-ad4d-84ace22ac7cc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ff2217fe-af80-4d02-ad4d-84ace22ac7cc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9f879f93aeea0c06122d0ef60ff6eff158190493604ed30b8bc9e278479025e9","name":"鳴海杏子","registered_at":"2026-06-21T18:43:07Z","symbol":"NIM2001520","token_address":"0xd4ec410f04f1d0ed84f6cc37df7dde68a5de913e","type":"artist","uuid":"ff2217fe-af80-4d02-ad4d-84ace22ac7cc"}
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 0x9f879f93aeea0c06122d0ef60ff6eff158190493604ed30b8bc9e278479025e9. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff2217fe-af80-4d02-ad4d-84ace22ac7cc.json and https://artists.proofprofile.net/proofs/artist/ff2217fe-af80-4d02-ad4d-84ace22ac7cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x9f879f93aeea0c06122d0ef60ff6eff158190493604ed30b8bc9e278479025e9","name":"鳴海杏子","registered_at":"2026-06-21T18:43:07Z","symbol":"NIM2001520","token_address":"0xd4ec410f04f1d0ed84f6cc37df7dde68a5de913e","type":"artist","uuid":"ff2217fe-af80-4d02-ad4d-84ace22ac7cc"}
album: ビューティフル・ドリーマー
  type: MusicAlbum
  date published: 2013-11-06
album: ビューティフル・ドリーマー
  type: MusicAlbum
  date published: 2013-11-06
album: 夕暮アフター
  type: MusicAlbum
  date published: 2014-08-22
album: Cocoiro Rainbow
  type: MusicAlbum
  date published: 2014-12-17
  track: Cocoiro Rainbow
    type: MusicRecording
    duration: PT3M53S
    duration ms: 233600
    explicit: false
    by artist: 鳴海杏子
    in album: Cocoiro Rainbow
      type: MusicAlbum
      date published: 2014-12-17
    genre: anime
    isrc code: JPR501411267
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T05:52:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x85b676563292f8ee79be4d4c94d3a9a69f310b211cec0f700f93339bae73d1d0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956790
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956790
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPR501411267
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T12:31:54Z
    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 0x85b676563292f8ee79be4d4c94d3a9a69f310b211cec0f700f93339bae73d1d0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPR501411267.
      date published: 2026-07-05T12:31:54Z
    audio: Cocoiro Rainbow
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.983
      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: 0.584
      additional property: Energy
        type: PropertyValue
        value: 0.806
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.426
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.263
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.84
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.064
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: さよならフルムーン
  type: MusicAlbum
  date published: 2016-02-24