マスタード
type: MusicGroup
genre: future bass
popularity: 6
followers: 191
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc820fd07e27a19554ff90093bb71465681692a4fdcbef731d92b431f611aaca2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/985acd64-7461-4acd-92f5-acc0ac71c7b0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/985acd64-7461-4acd-92f5-acc0ac71c7b0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/985acd64-7461-4acd-92f5-acc0ac71c7b0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc820fd07e27a19554ff90093bb71465681692a4fdcbef731d92b431f611aaca2","name":"マスタード","registered_at":"2026-06-17T18:47:47Z","symbol":"NIM1486051","token_address":"0x5a93b5f3d0962ceaf9de379e27d0803fe19261b8","type":"artist","uuid":"985acd64-7461-4acd-92f5-acc0ac71c7b0"}
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 0xc820fd07e27a19554ff90093bb71465681692a4fdcbef731d92b431f611aaca2. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/985acd64-7461-4acd-92f5-acc0ac71c7b0.json and https://artists.proofprofile.net/proofs/artist/985acd64-7461-4acd-92f5-acc0ac71c7b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xc820fd07e27a19554ff90093bb71465681692a4fdcbef731d92b431f611aaca2","name":"マスタード","registered_at":"2026-06-17T18:47:47Z","symbol":"NIM1486051","token_address":"0x5a93b5f3d0962ceaf9de379e27d0803fe19261b8","type":"artist","uuid":"985acd64-7461-4acd-92f5-acc0ac71c7b0"}
album: ネハンマド (feat. なまほしちゃん)
  type: MusicAlbum
  date published: 2024-07-25
album: ネハンマド
  type: MusicAlbum
  date published: 2024-07-27
album: 青い鳥はもう死んだのに (feat. REDALiCE & モリモリあつし)
  type: MusicAlbum
  date published: 2024-08-31
  track: 青い鳥はもう死んだのに (feat. REDALiCE & モリモリあつし)
    type: MusicRecording
    duration: PT3M4S
    duration ms: 184740
    explicit: false
    by artist: マスタード
    in album: 青い鳥はもう死んだのに (feat. REDALiCE & モリモリあつし)
      type: MusicAlbum
      date published: 2024-08-31
    genre: future bass
    isrc code: TCJPB2463838
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T04:04:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8a0fecb48aa05eb3e2a0435b459459133c19d4f66c36f2dfa2f54c7b48761b33
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPB2463838
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T07:04:10Z
    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 0x8a0fecb48aa05eb3e2a0435b459459133c19d4f66c36f2dfa2f54c7b48761b33. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:10Z), 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/TCJPB2463838.
      date published: 2026-07-20T07:04:10Z
    audio: 青い鳥はもう死んだのに (feat. REDALiCE & モリモリあつし)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 178.148
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.498
      additional property: Energy
        type: PropertyValue
        value: 0.982
      additional property: Speechiness
        type: PropertyValue
        value: 0.198
      additional property: Acousticness
        type: PropertyValue
        value: 0.038
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.307
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.574
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.284
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 出る杭は暴れる
  type: MusicAlbum
  date published: 2024-10-24