NIHA-C
type: MusicGroup
genre: j-rap
popularity: 16
followers: 1348
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x37b0ed743caab10cca76ff90212a94636458ca6b5955b26b3b50c0af105b0239
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953626
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953626
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2bdebe68-98c5-449e-be09-11127bd9499a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2bdebe68-98c5-449e-be09-11127bd9499a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2bdebe68-98c5-449e-be09-11127bd9499a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:41:45Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b0ed743caab10cca76ff90212a94636458ca6b5955b26b3b50c0af105b0239. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bdebe68-98c5-449e-be09-11127bd9499a.json and https://artists.proofprofile.net/proofs/artist/2bdebe68-98c5-449e-be09-11127bd9499a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
album: トモダチ feat. Jinmenusagi
  type: MusicAlbum
  date published: 2017-06-26
album: トモダチ feat. Jinmenusagi
  type: MusicAlbum
  date published: 2017-06-26
album: モナリザ feat. ハシシ from 電波少女
  type: MusicAlbum
  date published: 2017-08-10
album: モナリザ feat. ハシシ from 電波少女
  type: MusicAlbum
  date published: 2017-08-10
album: アリバイ
  type: MusicAlbum
  date published: 2017-11-15
album: アリバイ
  type: MusicAlbum
  date published: 2017-11-15
album: アリバイ
  type: MusicAlbum
  date published: 2017-11-15
  track: モナリザ feat. ハシシ from 電波少女
    type: MusicRecording
    duration: PT4M21S
    duration ms: 261176
    explicit: false
    by artist: NIHA-C
    in album: アリバイ
      type: MusicAlbum
      date published: 2017-11-15
    genre: j-rap
    isrc code: JPI541700023
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T05:46:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0c91cb8399cdbcabf5b84ca84f5d5dd4e04247485740a73f1b0842e3ee3d313b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958506
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958506
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI541700023
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T06:14:51Z
    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 0x0c91cb8399cdbcabf5b84ca84f5d5dd4e04247485740a73f1b0842e3ee3d313b. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/JPI541700023.
      date published: 2026-07-18T06:14:51Z
    audio: モナリザ feat. ハシシ from 電波少女
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.056
      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: 0.767
      additional property: Energy
        type: PropertyValue
        value: 0.627
      additional property: Speechiness
        type: PropertyValue
        value: 0.197
      additional property: Acousticness
        type: PropertyValue
        value: 0.25
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.639
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.514
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.735
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 灰塵
  type: MusicAlbum
  date published: 2025-10-08
album: Kaijin
  type: MusicAlbum
  date published: 2025-10-08