星北 ヒナノ,西条 リリア,東坂 ミオ,南曜 スバル (CV. 土屋 李央,鈴木 杏奈,小倉 唯,日向 未南)
type: MusicGroup
popularity: 3
followers: 80
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x46d20cafb5905931b55a790c0ec5367abdfd1687fe16e0418403e01006e4f4c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/830b994b-67d3-4878-9ce7-c515d3253ef6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/830b994b-67d3-4878-9ce7-c515d3253ef6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/830b994b-67d3-4878-9ce7-c515d3253ef6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x46d20cafb5905931b55a790c0ec5367abdfd1687fe16e0418403e01006e4f4c2","name":"星北 ヒナノ,西条 リリア,東坂 ミオ,南曜 スバル (CV. 土屋 李央,鈴木 杏奈,小倉 唯,日向 未南)","registered_at":"2026-06-17T11:20:49Z","symbol":"NIM1379457","token_address":"0xcc9fe651b1f31c309c9abe1adfb7377a4043701b","type":"artist","uuid":"830b994b-67d3-4878-9ce7-c515d3253ef6"}
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 0x46d20cafb5905931b55a790c0ec5367abdfd1687fe16e0418403e01006e4f4c2. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/830b994b-67d3-4878-9ce7-c515d3253ef6.json and https://artists.proofprofile.net/proofs/artist/830b994b-67d3-4878-9ce7-c515d3253ef6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x46d20cafb5905931b55a790c0ec5367abdfd1687fe16e0418403e01006e4f4c2","name":"星北 ヒナノ,西条 リリア,東坂 ミオ,南曜 スバル (CV. 土屋 李央,鈴木 杏奈,小倉 唯,日向 未南)","registered_at":"2026-06-17T11:20:49Z","symbol":"NIM1379457","token_address":"0xcc9fe651b1f31c309c9abe1adfb7377a4043701b","type":"artist","uuid":"830b994b-67d3-4878-9ce7-c515d3253ef6"}
album: Starlight challenge
  type: MusicAlbum
  date published: 2023-03-29
  track: Starlight challenge
    type: MusicRecording
    duration: PT4M32S
    duration ms: 272100
    explicit: false
    by artist: 星北 ヒナノ,西条 リリア,東坂 ミオ,南曜 スバル (CV. 土屋 李央,鈴木 杏奈,小倉 唯,日向 未南)
    in album: Starlight challenge
      type: MusicAlbum
      date published: 2023-03-29
    isrc code: JPT552300237
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T00:08:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc0ecaaa19b214469758f98a063d7463a4eda6113eb1aa0832ed9fbdd9b959849
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958631
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958631
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPT552300237
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T00:50:09Z
    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 0xc0ecaaa19b214469758f98a063d7463a4eda6113eb1aa0832ed9fbdd9b959849. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPT552300237.
      date published: 2026-07-19T00:50:09Z
    audio: Starlight challenge
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.427
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.535
      additional property: Energy
        type: PropertyValue
        value: 0.881
      additional property: Speechiness
        type: PropertyValue
        value: 0.06
      additional property: Acousticness
        type: PropertyValue
        value: 0.161
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.092
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.5
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.61
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major