絢辻詞(CV:名塚佳織)
type: MusicGroup
genre: anime
popularity: 6
followers: 430
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf5fb71f1f847725d589cf79227ed2f7c6d18b00989aa650670b51ddef5b67cd6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc939231-bd6f-4cab-b2c5-29566ad41fc2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc939231-bd6f-4cab-b2c5-29566ad41fc2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bc939231-bd6f-4cab-b2c5-29566ad41fc2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf5fb71f1f847725d589cf79227ed2f7c6d18b00989aa650670b51ddef5b67cd6","name":"絢辻詞(CV:名塚佳織)","registered_at":"2026-06-20T17:34:31Z","symbol":"NIM1667447","token_address":"0x87ed97e8a7e1c3d941acf5e5fcb2e664b1e62c5f","type":"artist","uuid":"bc939231-bd6f-4cab-b2c5-29566ad41fc2"}
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 0xf5fb71f1f847725d589cf79227ed2f7c6d18b00989aa650670b51ddef5b67cd6. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc939231-bd6f-4cab-b2c5-29566ad41fc2.json and https://artists.proofprofile.net/proofs/artist/bc939231-bd6f-4cab-b2c5-29566ad41fc2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xf5fb71f1f847725d589cf79227ed2f7c6d18b00989aa650670b51ddef5b67cd6","name":"絢辻詞(CV:名塚佳織)","registered_at":"2026-06-20T17:34:31Z","symbol":"NIM1667447","token_address":"0x87ed97e8a7e1c3d941acf5e5fcb2e664b1e62c5f","type":"artist","uuid":"bc939231-bd6f-4cab-b2c5-29566ad41fc2"}
album: 嘆きの天使(通常盤)
  type: MusicAlbum
  date published: 2010-12-15
  track: 嘆きの天使
    type: MusicRecording
    duration: PT5M14S
    duration ms: 314826
    explicit: false
    by artist: 絢辻詞(CV:名塚佳織)
    in album: 嘆きの天使(通常盤)
      type: MusicAlbum
      date published: 2010-12-15
    genre: anime
    isrc code: JPPC01002569
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:45:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x406c93189db4720a19568beef92ae81fcbbaab6afdbeda13e4f80ae402b6cfe1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956776
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956776
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC01002569
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:59:37Z
    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 0x406c93189db4720a19568beef92ae81fcbbaab6afdbeda13e4f80ae402b6cfe1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPPC01002569.
      date published: 2026-07-05T10:59:37Z
    audio: 嘆きの天使
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 114.044
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.635
      additional property: Energy
        type: PropertyValue
        value: 0.644
      additional property: Speechiness
        type: PropertyValue
        value: 0.026
      additional property: Acousticness
        type: PropertyValue
        value: 0.366
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.132
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.221
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.839
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 嘆きの天使(特別盤)
  type: MusicAlbum
  date published: 2010-12-15