古舘佑太郎
type: MusicGroup
genre: japanese indie
popularity: 5
followers: 777
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xac073569109dc216be0d6d2ee6ab12d0f1fd5434379d6cabc9a27ba03398cb47
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a4390053-f811-46e8-99b1-a4d86a8fe30d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a4390053-f811-46e8-99b1-a4d86a8fe30d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a4390053-f811-46e8-99b1-a4d86a8fe30d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xac073569109dc216be0d6d2ee6ab12d0f1fd5434379d6cabc9a27ba03398cb47","name":"古舘佑太郎","registered_at":"2026-06-20T06:51:57Z","symbol":"NIM1546307","token_address":"0xb2c655b9066409749949f37889701bcf5c786064","type":"artist","uuid":"a4390053-f811-46e8-99b1-a4d86a8fe30d"}
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 0xac073569109dc216be0d6d2ee6ab12d0f1fd5434379d6cabc9a27ba03398cb47. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4390053-f811-46e8-99b1-a4d86a8fe30d.json and https://artists.proofprofile.net/proofs/artist/a4390053-f811-46e8-99b1-a4d86a8fe30d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xac073569109dc216be0d6d2ee6ab12d0f1fd5434379d6cabc9a27ba03398cb47","name":"古舘佑太郎","registered_at":"2026-06-20T06:51:57Z","symbol":"NIM1546307","token_address":"0xb2c655b9066409749949f37889701bcf5c786064","type":"artist","uuid":"a4390053-f811-46e8-99b1-a4d86a8fe30d"}
album: BETTER
  type: MusicAlbum
  date published: 2016-11-09
  track: トマトキャンディ
    type: MusicRecording
    duration: PT3M30S
    duration ms: 210000
    explicit: false
    by artist: 古舘佑太郎
    in album: BETTER
      type: MusicAlbum
      date published: 2016-11-09
    genre: japanese indie
    isrc code: JPZ921613272
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T11:28:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4f9c4e66f4062c0324387ffb32b10e577885e32862ba9ae977335ef440647f7e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959128
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959128
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921613272
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T12:33:25Z
    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 0x4f9c4e66f4062c0324387ffb32b10e577885e32862ba9ae977335ef440647f7e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPZ921613272.
      date published: 2026-07-22T12:33:25Z
    audio: トマトキャンディ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.935
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.695
      additional property: Energy
        type: PropertyValue
        value: 0.669
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.082
      additional property: Liveness
        type: PropertyValue
        value: 0.049
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.787
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.054
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major