Mayuka Okamoto
type: MusicGroup
popularity: 3
followers: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf1d46fac8df48ff9700d94f33e78573044df05c9959c9324683b62a7faba6c17
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/eb4f8dc2-600b-4aea-8450-51b9ac0c687c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb4f8dc2-600b-4aea-8450-51b9ac0c687c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/eb4f8dc2-600b-4aea-8450-51b9ac0c687c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf1d46fac8df48ff9700d94f33e78573044df05c9959c9324683b62a7faba6c17","name":"Mayuka Okamoto","registered_at":"2026-06-21T10:55:12Z","symbol":"NIM1903909","token_address":"0xd59f618a6e879b0dcc5e1ed74c1336822e9b4ac5","type":"artist","uuid":"eb4f8dc2-600b-4aea-8450-51b9ac0c687c"}
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 0xf1d46fac8df48ff9700d94f33e78573044df05c9959c9324683b62a7faba6c17. 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/eb4f8dc2-600b-4aea-8450-51b9ac0c687c.json and https://artists.proofprofile.net/proofs/artist/eb4f8dc2-600b-4aea-8450-51b9ac0c687c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xf1d46fac8df48ff9700d94f33e78573044df05c9959c9324683b62a7faba6c17","name":"Mayuka Okamoto","registered_at":"2026-06-21T10:55:12Z","symbol":"NIM1903909","token_address":"0xd59f618a6e879b0dcc5e1ed74c1336822e9b4ac5","type":"artist","uuid":"eb4f8dc2-600b-4aea-8450-51b9ac0c687c"}
album: Plumeria
  type: MusicAlbum
  date published: 2023-03-14
album: The World is More Beautiful
  type: MusicAlbum
  date published: 2024-04-20
album: To you who are now leaving
  type: MusicAlbum
  date published: 2025-02-05