Yuto Hoshizora
type: MusicGroup
popularity: 10
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd21fe2ae129ba3a2eab7858e9812b92c5e2b4eb4d532f184a2ed4cefce861498
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16f512b5-7127-43ed-886b-7039bb2bc618.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16f512b5-7127-43ed-886b-7039bb2bc618.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16f512b5-7127-43ed-886b-7039bb2bc618
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd21fe2ae129ba3a2eab7858e9812b92c5e2b4eb4d532f184a2ed4cefce861498","name":"Yuto Hoshizora","registered_at":"2026-06-15T21:37:32Z","symbol":"NIM0839370","token_address":"0x8d98a4f4ea3a80be4b2af72b4a119e6cf95e6cb7","type":"artist","uuid":"16f512b5-7127-43ed-886b-7039bb2bc618"}
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 0xd21fe2ae129ba3a2eab7858e9812b92c5e2b4eb4d532f184a2ed4cefce861498. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16f512b5-7127-43ed-886b-7039bb2bc618.json and https://artists.proofprofile.net/proofs/artist/16f512b5-7127-43ed-886b-7039bb2bc618.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xd21fe2ae129ba3a2eab7858e9812b92c5e2b4eb4d532f184a2ed4cefce861498","name":"Yuto Hoshizora","registered_at":"2026-06-15T21:37:32Z","symbol":"NIM0839370","token_address":"0x8d98a4f4ea3a80be4b2af72b4a119e6cf95e6cb7","type":"artist","uuid":"16f512b5-7127-43ed-886b-7039bb2bc618"}
album: Meanings
  type: MusicAlbum
  date published: 2024-11-22
album: Failing
  type: MusicAlbum
  date published: 2025-02-07
  track: Failing
    type: MusicRecording
    duration: PT1M37S
    duration ms: 97731
    explicit: false
    by artist: Yuto Hoshizora
    in album: Failing
      type: MusicAlbum
      date published: 2025-02-07
    isrc code: DEZC62575224
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-02T21:38:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcc7be45861f7e69987a0eca70aa88f3468ec9ee6fca41335140bcef1f0f6537d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956420
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956420
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62575224
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T03:50:52Z
    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 0xcc7be45861f7e69987a0eca70aa88f3468ec9ee6fca41335140bcef1f0f6537d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:50:52Z), 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/DEZC62575224.
      date published: 2026-07-17T03:50:52Z
    audio: Failing
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.996
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.553
      additional property: Energy
        type: PropertyValue
        value: 0.304
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.094
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.952
      additional property: Liveness
        type: PropertyValue
        value: 0.055
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.22
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.944
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor