二ノ宮はぐ
type: MusicGroup
popularity: 6
followers: 617
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x485463f03cce3e9c4aa7c8d366b2fecead64b1623faedddb93600532518b5b6d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d50ca72c-3f1a-453f-85f3-4013ffe1943c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d50ca72c-3f1a-453f-85f3-4013ffe1943c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d50ca72c-3f1a-453f-85f3-4013ffe1943c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x485463f03cce3e9c4aa7c8d366b2fecead64b1623faedddb93600532518b5b6d","name":"二ノ宮はぐ","registered_at":"2026-06-21T02:30:00Z","symbol":"NIM1791295","token_address":"0x8f0c8b1bd496d7333fc436cb5319e11fa26c0c9a","type":"artist","uuid":"d50ca72c-3f1a-453f-85f3-4013ffe1943c"}
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 0x485463f03cce3e9c4aa7c8d366b2fecead64b1623faedddb93600532518b5b6d. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d50ca72c-3f1a-453f-85f3-4013ffe1943c.json and https://artists.proofprofile.net/proofs/artist/d50ca72c-3f1a-453f-85f3-4013ffe1943c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x485463f03cce3e9c4aa7c8d366b2fecead64b1623faedddb93600532518b5b6d","name":"二ノ宮はぐ","registered_at":"2026-06-21T02:30:00Z","symbol":"NIM1791295","token_address":"0x8f0c8b1bd496d7333fc436cb5319e11fa26c0c9a","type":"artist","uuid":"d50ca72c-3f1a-453f-85f3-4013ffe1943c"}
album: 殺されたい
  type: MusicAlbum
  date published: 2022-12-21
album: 時間
  type: MusicAlbum
  date published: 2023-02-15
album: Red Carpet
  type: MusicAlbum
  date published: 2023-04-19
album: Liar Life
  type: MusicAlbum
  date published: 2023-06-28
album: 明日はもう僕じゃない
  type: MusicAlbum
  date published: 2023-07-26
album: 欠落
  type: MusicAlbum
  date published: 2023-09-27
album: 銀杏
  type: MusicAlbum
  date published: 2023-11-08
album: 不撓
  type: MusicAlbum
  date published: 2024-02-28
  track: Liar Life
    type: MusicRecording
    duration: PT3M56S
    duration ms: 236086
    explicit: false
    by artist: 二ノ宮はぐ
    in album: 不撓
      type: MusicAlbum
      date published: 2024-02-28
    isrc code: JPB602302552
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T11:41:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd68f2968add651eb104105591c91db5714557819a9bd784064d8ad91f0d540c5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602302552
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xd68f2968add651eb104105591c91db5714557819a9bd784064d8ad91f0d540c5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPB602302552.
      date published: 2026-07-05T01:12:41Z
    audio: Liar Life
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 92.029
      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: 0.591
      additional property: Energy
        type: PropertyValue
        value: 0.796
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.023
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.054
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.614
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.172
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 幻葬のままで
  type: MusicAlbum
  date published: 2024-07-27
album: hakubi
  type: MusicAlbum
  date published: 2024-08-17
album: HOSHIYOMI
  type: MusicAlbum
  date published: 2024-09-14
album: 花弥徒然
  type: MusicAlbum
  date published: 2024-11-03