One Hokkaido Project
type: MusicGroup
popularity: 2
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf297c14e39b51e94bdbdffd1bb63fe2c378bd7dcb5e3d7d34a9bc3481288db4d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e16e6577-d1f6-4122-bf63-4eeab0a18d96.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e16e6577-d1f6-4122-bf63-4eeab0a18d96.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e16e6577-d1f6-4122-bf63-4eeab0a18d96
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf297c14e39b51e94bdbdffd1bb63fe2c378bd7dcb5e3d7d34a9bc3481288db4d","name":"One Hokkaido Project","registered_at":"2026-06-21T06:47:30Z","symbol":"NIM1853033","token_address":"0x5ff11d496445f2f73b6745072127405d2f39d8e7","type":"artist","uuid":"e16e6577-d1f6-4122-bf63-4eeab0a18d96"}
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 0xf297c14e39b51e94bdbdffd1bb63fe2c378bd7dcb5e3d7d34a9bc3481288db4d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e16e6577-d1f6-4122-bf63-4eeab0a18d96.json and https://artists.proofprofile.net/proofs/artist/e16e6577-d1f6-4122-bf63-4eeab0a18d96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xf297c14e39b51e94bdbdffd1bb63fe2c378bd7dcb5e3d7d34a9bc3481288db4d","name":"One Hokkaido Project","registered_at":"2026-06-21T06:47:30Z","symbol":"NIM1853033","token_address":"0x5ff11d496445f2f73b6745072127405d2f39d8e7","type":"artist","uuid":"e16e6577-d1f6-4122-bf63-4eeab0a18d96"}
album: 私たちの道
  type: MusicAlbum
  date published: 2019-02-20
album: 私たちの道
  type: MusicAlbum
  date published: 2019-02-20
  track: 私たちの道
    type: MusicRecording
    duration: PT4M10S
    duration ms: 250525
    explicit: false
    by artist: One Hokkaido Project
    in album: 私たちの道
      type: MusicAlbum
      date published: 2019-02-20
    isrc code: JPZ921900147
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T05:51:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4c29a6f4ebd76d8a51c2b72966941cda39f497e3dfa313ef4113f33a56260468
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956894
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956894
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921900147
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T07:53:57Z
    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 0x4c29a6f4ebd76d8a51c2b72966941cda39f497e3dfa313ef4113f33a56260468. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPZ921900147.
      date published: 2026-07-06T07:53:57Z
    audio: 私たちの道
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 77.019
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.519
      additional property: Energy
        type: PropertyValue
        value: 0.584
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.553
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.293
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.451
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 私たちの道
  type: MusicAlbum
  date published: 2019-03-06