速水奏 (CV: 飯田友子)
type: MusicGroup
popularity: 22
followers: 534
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x943e4e17d7ec5819420e48f32a14a682dc8ac36c3ea05768cb516776a6983183
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/90fcf41c-daec-40ee-8591-e1e54df9ba94.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/90fcf41c-daec-40ee-8591-e1e54df9ba94.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/90fcf41c-daec-40ee-8591-e1e54df9ba94
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x943e4e17d7ec5819420e48f32a14a682dc8ac36c3ea05768cb516776a6983183","name":"速水奏 (CV: 飯田友子)","registered_at":"2026-06-12T04:26:55Z","symbol":"NIM0186550","token_address":"0x7221d4bb9668dcf01b9d29714f9ee0b702fa7fbf","type":"artist","uuid":"90fcf41c-daec-40ee-8591-e1e54df9ba94"}
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 0x943e4e17d7ec5819420e48f32a14a682dc8ac36c3ea05768cb516776a6983183. 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/90fcf41c-daec-40ee-8591-e1e54df9ba94.json and https://artists.proofprofile.net/proofs/artist/90fcf41c-daec-40ee-8591-e1e54df9ba94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x943e4e17d7ec5819420e48f32a14a682dc8ac36c3ea05768cb516776a6983183","name":"速水奏 (CV: 飯田友子)","registered_at":"2026-06-12T04:26:55Z","symbol":"NIM0186550","token_address":"0x7221d4bb9668dcf01b9d29714f9ee0b702fa7fbf","type":"artist","uuid":"90fcf41c-daec-40ee-8591-e1e54df9ba94"}
album: D-ark L-ily's Grin (GAME VERSION)
  type: MusicAlbum
  date published: 2023-10-31
  track: D-ark L-ily's Grin - GAME VERSION
    type: MusicRecording
    duration: PT2M6S
    duration ms: 126243
    explicit: false
    by artist: 速水奏 (CV: 飯田友子)
    in album: D-ark L-ily's Grin (GAME VERSION)
      type: MusicAlbum
      date published: 2023-10-31
    isrc code: JPCO02327180
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T16:34:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x30f64e3480832f4217340a811d28921a3f994b7e415feb96c0f532663b7d3083
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958913
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958913
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO02327180
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T16:58:47Z
    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 0x30f64e3480832f4217340a811d28921a3f994b7e415feb96c0f532663b7d3083. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/JPCO02327180.
      date published: 2026-07-20T16:58:47Z
    audio: D-ark L-ily's Grin - GAME VERSION
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.969
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.526
      additional property: Energy
        type: PropertyValue
        value: 0.946
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.011
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.204
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.775
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.235
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
track: Hotel Moonside - 烏屋茶房 / Take me away from Metropolis Remix - GAME VERSION
  type: MusicRecording
  duration: PT1M59S
  duration ms: 119500
  explicit: false
  by artist: 速水奏 (CV: 飯田友子)
  by artist: 烏屋茶房
  in album: THE IDOLM@STER CINDERELLA GIRLS 5thLIVE TOUR Serendipity Parade!!! SSA Original Album THE IDOLM@STER CINDERELLA GIRLS TO D@NCE TO (GAME VERSION)
    type: MusicAlbum
    date published: 2017-08-12
  isrc code: JPCO02408880
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T01:45:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe61a8f9dc76a6af4682a3ac2b495f590c0578b7a9044e0cf304e484cbbbb467c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956859
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956859
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO02408880
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:42:12Z
  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 0xe61a8f9dc76a6af4682a3ac2b495f590c0578b7a9044e0cf304e484cbbbb467c. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPCO02408880.
    date published: 2026-07-06T01:42:12Z
  audio: Hotel Moonside - 烏屋茶房 / Take me away from Metropolis Remix - GAME VERSION
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 136.024
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.623
    additional property: Energy
      type: PropertyValue
      value: 0.644
    additional property: Speechiness
      type: PropertyValue
      value: 0.047
    additional property: Acousticness
      type: PropertyValue
      value: 0
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
      value: 0.069
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.77
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -5.749

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major