紗耶華
type: MusicGroup
popularity: 6
followers: 287
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd2eec613e073b902678e89167e846988a375ab80cd77a2c3381fc5d28fe9deb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2af5d4d-a9f0-4d4f-87f9-275369917aef.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2af5d4d-a9f0-4d4f-87f9-275369917aef.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f2af5d4d-a9f0-4d4f-87f9-275369917aef
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbd2eec613e073b902678e89167e846988a375ab80cd77a2c3381fc5d28fe9deb","name":"紗耶華","registered_at":"2026-06-21T13:42:43Z","symbol":"NIM1937972","token_address":"0x99467252a9e1be3cb0d63f46f4c967591b20745b","type":"artist","uuid":"f2af5d4d-a9f0-4d4f-87f9-275369917aef"}
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 0xbd2eec613e073b902678e89167e846988a375ab80cd77a2c3381fc5d28fe9deb. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2af5d4d-a9f0-4d4f-87f9-275369917aef.json and https://artists.proofprofile.net/proofs/artist/f2af5d4d-a9f0-4d4f-87f9-275369917aef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xbd2eec613e073b902678e89167e846988a375ab80cd77a2c3381fc5d28fe9deb","name":"紗耶華","registered_at":"2026-06-21T13:42:43Z","symbol":"NIM1937972","token_address":"0x99467252a9e1be3cb0d63f46f4c967591b20745b","type":"artist","uuid":"f2af5d4d-a9f0-4d4f-87f9-275369917aef"}
album: CWM
  type: MusicAlbum
  date published: 2023-02-13
album: Sunny brass
  type: MusicAlbum
  date published: 2024-01-03
album: 紗耶華と申します！
  type: MusicAlbum
  date published: 2024-05-01
album: 愛だろ
  type: MusicAlbum
  date published: 2024-06-23
album: ウマ確
  type: MusicAlbum
  date published: 2024-09-20
  track: ウマ確
    type: MusicRecording
    duration: PT1M29S
    duration ms: 89500
    explicit: false
    by artist: 紗耶華
    in album: ウマ確
      type: MusicAlbum
      date published: 2024-09-20
    isrc code: TCJPB2493765
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T21:14:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8937c12799f9e12e7049b298594a265fd621fd28c98f5933c258036604c62b44
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPB2493765
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x8937c12799f9e12e7049b298594a265fd621fd28c98f5933c258036604c62b44. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPB2493765.
      date published: 2026-07-04T10:04:33Z
    audio: ウマ確
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.05
      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: 0.795
      additional property: Energy
        type: PropertyValue
        value: 0.921
      additional property: Speechiness
        type: PropertyValue
        value: 0.119
      additional property: Acousticness
        type: PropertyValue
        value: 0.419
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.215
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.674
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.671
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: うますぎやろがい
  type: MusicAlbum
  date published: 2024-11-21
album: めっちゃうまいやん
  type: MusicAlbum
  date published: 2025-01-16
album: マシッタやろがい
  type: MusicAlbum
  date published: 2025-05-14