Toshihiko Seki
type: MusicGroup
description: (born ) is a Japanese actor, voice actor, singer and narrator. In June 2004, Seki was honored by the readers of Animage Magazine in the 26th Annual Reader's Poll, where he was ranked the 9th favorite
popularity: 3
followers: 110
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x526f25416c43fd1e072332581ae1764c446e73b695a8d9cef712882dc7a6efed
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/58f162c5-239b-4025-873f-1ae9b84149ad.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/58f162c5-239b-4025-873f-1ae9b84149ad.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/58f162c5-239b-4025-873f-1ae9b84149ad
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x526f25416c43fd1e072332581ae1764c446e73b695a8d9cef712882dc7a6efed","name":"Toshihiko Seki","registered_at":"2026-06-16T20:35:34Z","symbol":"NIM1168296","token_address":"0xd3c6094261b5d09efedbe0fdde38ec0bc18ad8f9","type":"artist","uuid":"58f162c5-239b-4025-873f-1ae9b84149ad"}
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 0x526f25416c43fd1e072332581ae1764c446e73b695a8d9cef712882dc7a6efed. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58f162c5-239b-4025-873f-1ae9b84149ad.json and https://artists.proofprofile.net/proofs/artist/58f162c5-239b-4025-873f-1ae9b84149ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x526f25416c43fd1e072332581ae1764c446e73b695a8d9cef712882dc7a6efed","name":"Toshihiko Seki","registered_at":"2026-06-16T20:35:34Z","symbol":"NIM1168296","token_address":"0xd3c6094261b5d09efedbe0fdde38ec0bc18ad8f9","type":"artist","uuid":"58f162c5-239b-4025-873f-1ae9b84149ad"}