Leona Shishigami
type: MusicGroup
popularity: 11
followers: 4696
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd7be3c308b0dc0968eed106f5dc8041a4ab6ceb37b772b2bcb0abe3fabf3d4e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953777
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953777
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d0c8973c-3fa5-4b30-9a62-c28f72cdaa38.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d0c8973c-3fa5-4b30-9a62-c28f72cdaa38.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d0c8973c-3fa5-4b30-9a62-c28f72cdaa38
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:52:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcd7be3c308b0dc0968eed106f5dc8041a4ab6ceb37b772b2bcb0abe3fabf3d4e","name":"Leona Shishigami","registered_at":"2026-06-15T02:33:51Z","symbol":"NIM0654754","token_address":"0xbfbd85398584a6a5e95e177395fbe1c0828950d3","type":"artist","uuid":"d0c8973c-3fa5-4b30-9a62-c28f72cdaa38"}
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 0xcd7be3c308b0dc0968eed106f5dc8041a4ab6ceb37b772b2bcb0abe3fabf3d4e. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0c8973c-3fa5-4b30-9a62-c28f72cdaa38.json and https://artists.proofprofile.net/proofs/artist/d0c8973c-3fa5-4b30-9a62-c28f72cdaa38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:52:51Z
  text: {"copyright_id":"0xcd7be3c308b0dc0968eed106f5dc8041a4ab6ceb37b772b2bcb0abe3fabf3d4e","name":"Leona Shishigami","registered_at":"2026-06-15T02:33:51Z","symbol":"NIM0654754","token_address":"0xbfbd85398584a6a5e95e177395fbe1c0828950d3","type":"artist","uuid":"d0c8973c-3fa5-4b30-9a62-c28f72cdaa38"}
album: Brightenin' Hope
  type: MusicAlbum
  date published: 2019-11-30
  track: Brightenin' Hope
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220560
    explicit: false
    by artist: Leona Shishigami
    in album: Brightenin' Hope
      type: MusicAlbum
      date published: 2019-11-30
    isrc code: TCJPK1905694
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T04:50:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x982e6137a401373cb83e7748254112072a6a71a7b5ddc9118a6d4742e18df395
    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/TCJPK1905694
    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 0x982e6137a401373cb83e7748254112072a6a71a7b5ddc9118a6d4742e18df395. 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/TCJPK1905694.
      date published: 2026-07-05T12:31:54Z
    audio: Brightenin' Hope
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.477
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.573
      additional property: Energy
        type: PropertyValue
        value: 0.944
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.253
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.512
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.048
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Ganbare Ganbare cho-Ganbare
  type: MusicAlbum
  date published: 2020-04-08
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  type: MusicAlbum
  date published: 2020-11-07
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  type: MusicAlbum
  date published: 2020-11-07
album: History:L
  type: MusicAlbum
  date published: 2021-08-28
album: History:E
  type: MusicAlbum
  date published: 2022-03-30
album: Kiminotamenoamaisekai / Doubt
  type: MusicAlbum
  date published: 2023-08-16
album: Hanamaru Singing Days!
  type: MusicAlbum
  date published: 2024-05-09
album: hareholiday
  type: MusicAlbum
  date published: 2024-05-09
album: after rain
  type: MusicAlbum
  date published: 2024-06-09
album: History:O
  type: MusicAlbum
  date published: 2024-07-09
album: ai wo cyo-dai!
  type: MusicAlbum
  date published: 2024-09-28