Tomokazu Seki
type: MusicGroup
description: is a Japanese voice actor and singer. He previously worked with Haikyō. He is honorary president of and affiliated with Atomic Monkey and the chairman of theater company HeroHero Q. He is a special l
popularity: 3
followers: 117
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa099a03753d6ac1d2ffc7fa67c7141b4a8265823a496c066b2a7692515111ed
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/830ad0ae-8d99-4847-a7ec-2309079a2071.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/830ad0ae-8d99-4847-a7ec-2309079a2071.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/830ad0ae-8d99-4847-a7ec-2309079a2071
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfa099a03753d6ac1d2ffc7fa67c7141b4a8265823a496c066b2a7692515111ed","name":"Tomokazu Seki","registered_at":"2026-06-17T11:20:41Z","symbol":"NIM1379419","token_address":"0x71334a877c30a5934d814a5d27dfb3ad0b3b77e2","type":"artist","uuid":"830ad0ae-8d99-4847-a7ec-2309079a2071"}
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 0xfa099a03753d6ac1d2ffc7fa67c7141b4a8265823a496c066b2a7692515111ed. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/830ad0ae-8d99-4847-a7ec-2309079a2071.json and https://artists.proofprofile.net/proofs/artist/830ad0ae-8d99-4847-a7ec-2309079a2071.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xfa099a03753d6ac1d2ffc7fa67c7141b4a8265823a496c066b2a7692515111ed","name":"Tomokazu Seki","registered_at":"2026-06-17T11:20:41Z","symbol":"NIM1379419","token_address":"0x71334a877c30a5934d814a5d27dfb3ad0b3b77e2","type":"artist","uuid":"830ad0ae-8d99-4847-a7ec-2309079a2071"}