十 龍之介 (CV.佐藤拓也)
type: MusicGroup
popularity: 26
followers: 5935
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8538d79f34fb902ac13945ea17b5cb0fa93121d97ea066f100493ac881a501c9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fce15c1-e2f6-412f-b2c5-4abf1ecb6240.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fce15c1-e2f6-412f-b2c5-4abf1ecb6240.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0fce15c1-e2f6-412f-b2c5-4abf1ecb6240
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8538d79f34fb902ac13945ea17b5cb0fa93121d97ea066f100493ac881a501c9","name":"十 龍之介 (CV.佐藤拓也)","registered_at":"2026-06-11T12:00:17Z","symbol":"NIM0021623","token_address":"0xac0aa589594c5bfccc9fe5f8f469a3b532641ecc","type":"artist","uuid":"0fce15c1-e2f6-412f-b2c5-4abf1ecb6240"}
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 0x8538d79f34fb902ac13945ea17b5cb0fa93121d97ea066f100493ac881a501c9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fce15c1-e2f6-412f-b2c5-4abf1ecb6240.json and https://artists.proofprofile.net/proofs/artist/0fce15c1-e2f6-412f-b2c5-4abf1ecb6240.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x8538d79f34fb902ac13945ea17b5cb0fa93121d97ea066f100493ac881a501c9","name":"十 龍之介 (CV.佐藤拓也)","registered_at":"2026-06-11T12:00:17Z","symbol":"NIM0021623","token_address":"0xac0aa589594c5bfccc9fe5f8f469a3b532641ecc","type":"artist","uuid":"0fce15c1-e2f6-412f-b2c5-4abf1ecb6240"}
album: my 10plate
  type: MusicAlbum
  date published: 2018-10-12
album: my 10plate
  type: MusicAlbum
  date published: 2018-10-12
album: Wonderful Octave
  type: MusicAlbum
  date published: 2019-10-12
  track: Wonderful Octave - Ryunosuke ver.
    type: MusicRecording
    duration: PT3M33S
    duration ms: 213840
    explicit: false
    by artist: 十 龍之介 (CV.佐藤拓也)
    in album: Wonderful Octave
      type: MusicAlbum
      date published: 2019-10-12
    isrc code: JPI101901608
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T07:41:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x634388c374b50b5776194547a0ecd2dd4b57ca526d18958f0bb8773283ec2cc8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958122
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958122
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101901608
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T08:02:29Z
    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 0x634388c374b50b5776194547a0ecd2dd4b57ca526d18958f0bb8773283ec2cc8. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPI101901608.
      date published: 2026-07-15T08:02:29Z
    audio: Wonderful Octave - Ryunosuke ver.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.946
      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: 0.632
      additional property: Energy
        type: PropertyValue
        value: 0.959
      additional property: Speechiness
        type: PropertyValue
        value: 0.1
      additional property: Acousticness
        type: PropertyValue
        value: 0.005
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.18
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.596
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.672
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Wonderful Octave
  type: MusicAlbum
  date published: 2019-10-12
album: Four Seasons Blue
  type: MusicAlbum
  date published: 2024-10-12