木の実ナナ
type: MusicGroup
genre: enka
genre: j-r&b
genre: kayokyoku
popularity: 24
followers: 869
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7d72709918bd8498e25ec116dc715436252b787f2bf01af5971ce57c93f66883
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1507cf82-a4fb-44c3-accf-2bd14d3b0c54.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1507cf82-a4fb-44c3-accf-2bd14d3b0c54.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1507cf82-a4fb-44c3-accf-2bd14d3b0c54
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7d72709918bd8498e25ec116dc715436252b787f2bf01af5971ce57c93f66883","name":"木の実ナナ","registered_at":"2026-06-11T12:26:19Z","symbol":"NIM0027914","token_address":"0x9440f7834b7e219b9a4c9860d5c668f3a29c2c8a","type":"artist","uuid":"1507cf82-a4fb-44c3-accf-2bd14d3b0c54"}
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 0x7d72709918bd8498e25ec116dc715436252b787f2bf01af5971ce57c93f66883. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1507cf82-a4fb-44c3-accf-2bd14d3b0c54.json and https://artists.proofprofile.net/proofs/artist/1507cf82-a4fb-44c3-accf-2bd14d3b0c54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x7d72709918bd8498e25ec116dc715436252b787f2bf01af5971ce57c93f66883","name":"木の実ナナ","registered_at":"2026-06-11T12:26:19Z","symbol":"NIM0027914","token_address":"0x9440f7834b7e219b9a4c9860d5c668f3a29c2c8a","type":"artist","uuid":"1507cf82-a4fb-44c3-accf-2bd14d3b0c54"}
album: NANA 愛人
  type: MusicAlbum
  date published: 2005-06-30
  track: うぬぼれワルツ
    type: MusicRecording
    duration: PT3M31S
    duration ms: 211160
    explicit: false
    by artist: 木の実ナナ
    in album: NANA 愛人
      type: MusicAlbum
      date published: 2005-06-30
    genre: enka
    genre: j-r&b
    genre: kayokyoku
    isrc code: JPAP08500208
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:36:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8b118b0e87484c875f9a101c1828d51301e5399a184543b0d25622c0c13c4b9c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPAP08500208
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x8b118b0e87484c875f9a101c1828d51301e5399a184543b0d25622c0c13c4b9c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPAP08500208.
      date published: 2026-07-04T10:04:33Z
    audio: うぬぼれワルツ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 149.087
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.527
      additional property: Energy
        type: PropertyValue
        value: 0.482
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.468
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.096
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.563
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.143
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: NANA Vol.2 紅ほおずき
  type: MusicAlbum
  date published: 2005-06-30
album: 木の実ナナ ベストアルバム
  type: MusicAlbum
  date published: 2006-12-10