広瀬悦子
type: MusicGroup
genre: classical piano
popularity: 8
followers: 29
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe33959e9a45558969675174d7319db783a329fcf265b582317e7e60a1900ecbc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954027
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954027
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39bd4754-0c5f-4b08-a5cd-bbc2239785fe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39bd4754-0c5f-4b08-a5cd-bbc2239785fe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/39bd4754-0c5f-4b08-a5cd-bbc2239785fe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:55:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe33959e9a45558969675174d7319db783a329fcf265b582317e7e60a1900ecbc","name":"広瀬悦子","registered_at":"2026-06-16T09:40:54Z","symbol":"NIM1012093","token_address":"0x684cd29875531e90ca2d19d819c41ed3ddefbb9f","type":"artist","uuid":"39bd4754-0c5f-4b08-a5cd-bbc2239785fe"}
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 0xe33959e9a45558969675174d7319db783a329fcf265b582317e7e60a1900ecbc. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39bd4754-0c5f-4b08-a5cd-bbc2239785fe.json and https://artists.proofprofile.net/proofs/artist/39bd4754-0c5f-4b08-a5cd-bbc2239785fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:55:08Z
  text: {"copyright_id":"0xe33959e9a45558969675174d7319db783a329fcf265b582317e7e60a1900ecbc","name":"広瀬悦子","registered_at":"2026-06-16T09:40:54Z","symbol":"NIM1012093","token_address":"0x684cd29875531e90ca2d19d819c41ed3ddefbb9f","type":"artist","uuid":"39bd4754-0c5f-4b08-a5cd-bbc2239785fe"}
album: シャコンヌ 〜ピアノ・トランスクリプション
  type: MusicAlbum
  date published: 2004
album: ラ・ヴァルス
  type: MusicAlbum
  date published: 2005-05-18
  track: 《ペトルーシュカ》からの3楽章 I ロシアの踊り
    type: MusicRecording
    duration: PT2M34S
    duration ms: 154666
    explicit: false
    by artist: 広瀬悦子
    in album: ラ・ヴァルス
      type: MusicAlbum
      date published: 2005-05-18
    genre: classical piano
    isrc code: JPCO00506930
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T06:28:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1b6ccd8f65efd0bef9cf6618c6148f8023c5cfa88058fd0b78ef37272f6d3cc6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO00506930
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0x1b6ccd8f65efd0bef9cf6618c6148f8023c5cfa88058fd0b78ef37272f6d3cc6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPCO00506930.
      date published: 2026-07-04T14:03:39Z
    audio: 《ペトルーシュカ》からの3楽章 I ロシアの踊り
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 117.107
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.466
      additional property: Energy
        type: PropertyValue
        value: 0.297
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.991
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.918
      additional property: Liveness
        type: PropertyValue
        value: 0.314
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.28
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.89
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major