Showtaro Morikubo
type: MusicGroup
description: is a Japanese voice actor and singer who has voiced characters in anime, drama CDs, and video games. He was formerly affiliated with I'm Enterprise, Sigma Seven and VIMS. His most notable roles were
popularity: 3
followers: 57
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6842344de5e7cde5b48fa5f42dd7c1ef0092d379a3f689804cb92825511de668
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c035256d-6469-4c95-8993-e9b04f7a9ea1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c035256d-6469-4c95-8993-e9b04f7a9ea1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c035256d-6469-4c95-8993-e9b04f7a9ea1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6842344de5e7cde5b48fa5f42dd7c1ef0092d379a3f689804cb92825511de668","name":"Showtaro Morikubo","registered_at":"2026-06-20T19:15:36Z","symbol":"NIM1687416","token_address":"0x6aeea880a8418ebe69a2d4e274f7f3c2d153f6ce","type":"artist","uuid":"c035256d-6469-4c95-8993-e9b04f7a9ea1"}
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 0x6842344de5e7cde5b48fa5f42dd7c1ef0092d379a3f689804cb92825511de668. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c035256d-6469-4c95-8993-e9b04f7a9ea1.json and https://artists.proofprofile.net/proofs/artist/c035256d-6469-4c95-8993-e9b04f7a9ea1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x6842344de5e7cde5b48fa5f42dd7c1ef0092d379a3f689804cb92825511de668","name":"Showtaro Morikubo","registered_at":"2026-06-20T19:15:36Z","symbol":"NIM1687416","token_address":"0x6aeea880a8418ebe69a2d4e274f7f3c2d153f6ce","type":"artist","uuid":"c035256d-6469-4c95-8993-e9b04f7a9ea1"}