Seiji Yokoyama
type: MusicGroup
description: was a Japanese incidental music composer from Hiroshima. He graduated from the Kunitachi College of Music in 1957. Yokoyama is best known for his work on the anime series Saint Seiya and Space Pirate
popularity: 8
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x212b6c1c522d6d904ab8f21a21798894f49694c0c339827b9383e9a322ddfccb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953999
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953999
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/314e9772-7762-4546-985d-bea6f3aafae8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/314e9772-7762-4546-985d-bea6f3aafae8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/314e9772-7762-4546-985d-bea6f3aafae8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:20:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x212b6c1c522d6d904ab8f21a21798894f49694c0c339827b9383e9a322ddfccb","name":"Seiji Yokoyama","registered_at":"2026-06-16T06:43:48Z","symbol":"NIM0969822","token_address":"0x12263a4b941af0345aba4850378b882c7ae179e7","type":"artist","uuid":"314e9772-7762-4546-985d-bea6f3aafae8"}
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 0x212b6c1c522d6d904ab8f21a21798894f49694c0c339827b9383e9a322ddfccb. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/314e9772-7762-4546-985d-bea6f3aafae8.json and https://artists.proofprofile.net/proofs/artist/314e9772-7762-4546-985d-bea6f3aafae8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x212b6c1c522d6d904ab8f21a21798894f49694c0c339827b9383e9a322ddfccb","name":"Seiji Yokoyama","registered_at":"2026-06-16T06:43:48Z","symbol":"NIM0969822","token_address":"0x12263a4b941af0345aba4850378b882c7ae179e7","type":"artist","uuid":"314e9772-7762-4546-985d-bea6f3aafae8"}