KuroUsa(WhiteFlame)
type: MusicGroup
genre: vocaloid
popularity: 43
followers: 117783
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e1c72371f7753c3fa40ee5cedef7da8af6e0005af057daca728911891608d78
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/855dd690-fde8-408d-af4d-1ed9366ff859.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/855dd690-fde8-408d-af4d-1ed9366ff859.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/855dd690-fde8-408d-af4d-1ed9366ff859
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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 0x3e1c72371f7753c3fa40ee5cedef7da8af6e0005af057daca728911891608d78. 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/855dd690-fde8-408d-af4d-1ed9366ff859.json and https://artists.proofprofile.net/proofs/artist/855dd690-fde8-408d-af4d-1ed9366ff859.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
album: 千本桜
  type: MusicAlbum
  date published: 2010-01-01
album: 紅一葉
  type: MusicAlbum
  date published: 2011-02-28
album: カンタレラ
  type: MusicAlbum
  date published: 2012-02-28
album: Akahitoha
  type: MusicAlbum
  date published: 2012-02-29
album: 紅一葉
  type: MusicAlbum
  date published: 2012-02-29
album: カンタレラ
  type: MusicAlbum
  date published: 2012-02-29
album: Cantarella
  type: MusicAlbum
  date published: 2012-02-29
album: Senbonzakura
  type: MusicAlbum
  date published: 2012-02-29
album: 千本桜
  type: MusicAlbum
  date published: 2012-02-29
album: 月と星の虚構空間
  type: MusicAlbum
  date published: 2013-01-09
  track: 流れ星
    type: MusicRecording
    duration: PT4M14S
    duration ms: 254120
    explicit: false
    by artist: KuroUsa(WhiteFlame)
    in album: 月と星の虚構空間
      type: MusicAlbum
      date published: 2013-01-09
    genre: vocaloid
    isrc code: JPB601300100
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T10:52:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3b6f1c8a870aca977731e315095a94cd006544d32af10de010b69051ca09f71a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959123
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959123
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601300100
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T11:35:32Z
    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 0x3b6f1c8a870aca977731e315095a94cd006544d32af10de010b69051ca09f71a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601300100 — a six-check JSON result.
      date published: 2026-07-22T11:35:32Z
    audio: 流れ星
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.939
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.497
      additional property: Energy
        type: PropertyValue
        value: 0.904
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.298
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.566
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.62
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: 下弦の月
    type: MusicRecording
    duration: PT4M25S
    duration ms: 265880
    explicit: false
    by artist: KuroUsa(WhiteFlame)
    in album: 月と星の虚構空間
      type: MusicAlbum
      date published: 2013-01-09
    genre: vocaloid
    isrc code: JPB601300105
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T12:23:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x324ad8e59eb13c2cea9cb952669d23b9035e6511bbd4c5cabe356a2d9492b5c2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958286
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958286
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601300105
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T12:43:37Z
    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 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 0x324ad8e59eb13c2cea9cb952669d23b9035e6511bbd4c5cabe356a2d9492b5c2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601300105 — a six-check JSON result.
      date published: 2026-07-16T12:43:37Z
    audio: 下弦の月
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.974
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 上弦の月
album: Once Upon a Time

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.49

Energy
type: PropertyValue
value: 0.705

Speechiness
type: PropertyValue
value: 0.029

Acousticness
type: PropertyValue
value: 0.004

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.186

Valence (Positivity)
type: PropertyValue
value: 0.241

Loudness (dB)
type: PropertyValue
value: -4.4

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor

上弦の月
type: MusicAlbum
date published: 2015-02-13

Once Upon a Time
type: MusicAlbum
date published: 2020-10-15

Once Upon a Time
type: MusicAlbum
date published: 2020-10-15