Hatsune Miku
type: MusicGroup
description: , officially code-named CV01, is a mascot for a Vocaloid software voicebank developed by Crypton Future Media. She is depicted as a sixteen-year-old girl with long, turquoise twintails. Miku's personi
popularity: 3
followers: 21
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x662be8b00e3cc4be2cf07dc9f7e35a938e100d38da8cf845bd0ad2cff853afe3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954069
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954069
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a6b10ea-7db6-47c4-9656-549876a8beb3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a6b10ea-7db6-47c4-9656-549876a8beb3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7a6b10ea-7db6-47c4-9656-549876a8beb3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:30:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x662be8b00e3cc4be2cf07dc9f7e35a938e100d38da8cf845bd0ad2cff853afe3","name":"Hatsune Miku","registered_at":"2026-06-17T08:14:50Z","symbol":"NIM1335100","token_address":"0xa40c8102f60ed2dd16d5667b85f99ddf9b0fb040","type":"artist","uuid":"7a6b10ea-7db6-47c4-9656-549876a8beb3"}
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 0x662be8b00e3cc4be2cf07dc9f7e35a938e100d38da8cf845bd0ad2cff853afe3. Chain 2 (Bitcoin): anchored in block 954069 (2026-06-17T08:30:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a6b10ea-7db6-47c4-9656-549876a8beb3.json and https://artists.proofprofile.net/proofs/artist/7a6b10ea-7db6-47c4-9656-549876a8beb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:30:25Z
  text: {"copyright_id":"0x662be8b00e3cc4be2cf07dc9f7e35a938e100d38da8cf845bd0ad2cff853afe3","name":"Hatsune Miku","registered_at":"2026-06-17T08:14:50Z","symbol":"NIM1335100","token_address":"0xa40c8102f60ed2dd16d5667b85f99ddf9b0fb040","type":"artist","uuid":"7a6b10ea-7db6-47c4-9656-549876a8beb3"}