前田 秀幸
type: MusicGroup
popularity: 14
followers: 155
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3fbd83f55b1c1c418eeb7727ebfd9b4fef63a44644bc5e93e2893379c2372869
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953612
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953612
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16ae8a1c-ade2-45db-8dd0-efa6241c810f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16ae8a1c-ade2-45db-8dd0-efa6241c810f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16ae8a1c-ade2-45db-8dd0-efa6241c810f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T08:22:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3fbd83f55b1c1c418eeb7727ebfd9b4fef63a44644bc5e93e2893379c2372869","name":"前田 秀幸","registered_at":"2026-06-14T06:47:00Z","symbol":"NIM0371567","token_address":"0x3309c00ea73677afb408fa44f8263c82c7825312","type":"artist","uuid":"16ae8a1c-ade2-45db-8dd0-efa6241c810f"}
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 0x3fbd83f55b1c1c418eeb7727ebfd9b4fef63a44644bc5e93e2893379c2372869. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16ae8a1c-ade2-45db-8dd0-efa6241c810f.json and https://artists.proofprofile.net/proofs/artist/16ae8a1c-ade2-45db-8dd0-efa6241c810f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T08:22:11Z
  text: {"copyright_id":"0x3fbd83f55b1c1c418eeb7727ebfd9b4fef63a44644bc5e93e2893379c2372869","name":"前田 秀幸","registered_at":"2026-06-14T06:47:00Z","symbol":"NIM0371567","token_address":"0x3309c00ea73677afb408fa44f8263c82c7825312","type":"artist","uuid":"16ae8a1c-ade2-45db-8dd0-efa6241c810f"}
album: 島（Acoustic Ver)
  type: MusicAlbum
  date published: 2019-11-11
  track: 島（Acoustic Ver)
    type: MusicRecording
    duration: PT5M23S
    duration ms: 323178
    explicit: false
    by artist: 前田 秀幸
    in album: 島（Acoustic Ver)
      type: MusicAlbum
      date published: 2019-11-11
    isrc code: JPD551900033
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T18:56:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x66089283c15c751c797f3dc323ab25174e7ebec6ffb3e537aa71d6cc99ebc863
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958931
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958931
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD551900033
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:15:01Z
    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 0x66089283c15c751c797f3dc323ab25174e7ebec6ffb3e537aa71d6cc99ebc863. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD551900033 — a six-check JSON result.
      date published: 2026-07-20T21:15:01Z
    audio: 島（Acoustic Ver)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.289
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.661
      additional property: Energy
        type: PropertyValue
        value: 0.349
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.839
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.375
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.311
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: YUAKI
  type: MusicAlbum
  date published: 2020-04-15