加藤葉月 (CV.朝井彩加)
type: MusicGroup
popularity: 8
followers: 220
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdef7ae3d2ebdad1374d4c1a24beb05aacc385a1f060433edc5cd7835916db319
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae081a9d-a842-4ce7-9d10-140bfbda0662.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae081a9d-a842-4ce7-9d10-140bfbda0662.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ae081a9d-a842-4ce7-9d10-140bfbda0662
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdef7ae3d2ebdad1374d4c1a24beb05aacc385a1f060433edc5cd7835916db319","name":"加藤葉月 (CV.朝井彩加)","registered_at":"2026-06-20T11:05:02Z","symbol":"NIM1596991","token_address":"0x39f3162549670527b644c98fa25058c6f1eb6ee3","type":"artist","uuid":"ae081a9d-a842-4ce7-9d10-140bfbda0662"}
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 0xdef7ae3d2ebdad1374d4c1a24beb05aacc385a1f060433edc5cd7835916db319. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae081a9d-a842-4ce7-9d10-140bfbda0662.json and https://artists.proofprofile.net/proofs/artist/ae081a9d-a842-4ce7-9d10-140bfbda0662.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xdef7ae3d2ebdad1374d4c1a24beb05aacc385a1f060433edc5cd7835916db319","name":"加藤葉月 (CV.朝井彩加)","registered_at":"2026-06-20T11:05:02Z","symbol":"NIM1596991","token_address":"0x39f3162549670527b644c98fa25058c6f1eb6ee3","type":"artist","uuid":"ae081a9d-a842-4ce7-9d10-140bfbda0662"}
album: TVアニメ『響け！ユーフォニアム』キャラクターソング Vol.2
  type: MusicAlbum
  date published: 2015-07-08
  track: 北宇治四重奏 第2番 チューバ
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188920
    explicit: false
    by artist: 加藤葉月 (CV.朝井彩加)
    in album: TVアニメ『響け！ユーフォニアム』キャラクターソング Vol.2
      type: MusicAlbum
      date published: 2015-07-08
    isrc code: JPI101500940
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T15:18:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb59d48b18d5e44c560df433e0240d1d5a738cc77b22e100b6dcf6f011c4f1ed0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101500940
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0xb59d48b18d5e44c560df433e0240d1d5a738cc77b22e100b6dcf6f011c4f1ed0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPI101500940.
      date published: 2026-07-05T18:48:28Z
    audio: 北宇治四重奏 第2番 チューバ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 121.672
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.725
      additional property: Energy
        type: PropertyValue
        value: 0.136
      additional property: Speechiness
        type: PropertyValue
        value: 0.067
      additional property: Acousticness
        type: PropertyValue
        value: 0.989
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.924
      additional property: Liveness
        type: PropertyValue
        value: 0.115
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.401
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.904
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: TVアニメ『響け！ユーフォニアム』キャラクターソング Vol.2
  type: MusicAlbum
  date published: 2015-07-08