はぐち
type: MusicGroup
popularity: 9
followers: 956
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x38a8c37176952e030c932bdb00a3e5739d7a6fc940e8fa53a0fbb79a9fe0d8ba
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/53333f24-0392-456c-bd5c-f2c3b787d3e8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/53333f24-0392-456c-bd5c-f2c3b787d3e8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/53333f24-0392-456c-bd5c-f2c3b787d3e8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x38a8c37176952e030c932bdb00a3e5739d7a6fc940e8fa53a0fbb79a9fe0d8ba","name":"はぐち","registered_at":"2026-06-16T18:32:19Z","symbol":"NIM1138880","token_address":"0x6cdca08bea80e0d0af3cf6a52c4223d437a634e7","type":"artist","uuid":"53333f24-0392-456c-bd5c-f2c3b787d3e8"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8c37176952e030c932bdb00a3e5739d7a6fc940e8fa53a0fbb79a9fe0d8ba. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53333f24-0392-456c-bd5c-f2c3b787d3e8.json and https://artists.proofprofile.net/proofs/artist/53333f24-0392-456c-bd5c-f2c3b787d3e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x38a8c37176952e030c932bdb00a3e5739d7a6fc940e8fa53a0fbb79a9fe0d8ba","name":"はぐち","registered_at":"2026-06-16T18:32:19Z","symbol":"NIM1138880","token_address":"0x6cdca08bea80e0d0af3cf6a52c4223d437a634e7","type":"artist","uuid":"53333f24-0392-456c-bd5c-f2c3b787d3e8"}
album: 檸檬とゆう木
  type: MusicAlbum
  date published: 2020-05-06
album: あこがれのくらし
  type: MusicAlbum
  date published: 2021-06-03
album: 離れられないから影 (demo ver.)
  type: MusicAlbum
  date published: 2022-11-11
album: デアユー (demo ver.)
  type: MusicAlbum
  date published: 2023-01-01
  track: デアユー - demo ver.
    type: MusicRecording
    duration: PT4M1S
    duration ms: 241993
    explicit: false
    by artist: はぐち
    in album: デアユー (demo ver.)
      type: MusicAlbum
      date published: 2023-01-01
    isrc code: JP92A2212229
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T08:15:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb51603c1ff557d83a5ae8de01a8c26b67de7243353e94cce14ec3517445361d3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959114
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959114
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92A2212229
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T08:41:42Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51603c1ff557d83a5ae8de01a8c26b67de7243353e94cce14ec3517445361d3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JP92A2212229.
      date published: 2026-07-22T08:41:42Z
    audio: デアユー - demo ver.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 78.968
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.339
      additional property: Energy
        type: PropertyValue
        value: 0.108
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.888
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.094
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.55
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.78
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: いい日にしようね
  type: MusicAlbum
  date published: 2023-09-22
album: 予感
  type: MusicAlbum
  date published: 2024-06-01
album: あこがれのくらし
  type: MusicAlbum
  date published: 2024-07-10
album: 離れられないから影
  type: MusicAlbum
  date published: 2024-09-04