John Kusiak
type: MusicGroup
description: __NOTOC__ John Kusiak (born July 20, 1948) is an American composer best known for his work with documentary filmmaker Errol Morris. He won the 2012 Cinema Eye Honors Award for Outstanding Achievement
popularity: 6
followers: 22
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc7fafe3fe80429fa4f658a3eaff60d7c9c03862b848e952286bbd213e6d36f8c
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/8d8a8039-edd2-4d46-b94a-7b21abfde124.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8d8a8039-edd2-4d46-b94a-7b21abfde124.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8d8a8039-edd2-4d46-b94a-7b21abfde124
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc7fafe3fe80429fa4f658a3eaff60d7c9c03862b848e952286bbd213e6d36f8c","name":"John Kusiak","registered_at":"2026-06-17T15:24:49Z","symbol":"NIM1437582","token_address":"0x1566a5a9b571a881cd02ec5453a4b199e7f88dc7","type":"artist","uuid":"8d8a8039-edd2-4d46-b94a-7b21abfde124"}
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 0xc7fafe3fe80429fa4f658a3eaff60d7c9c03862b848e952286bbd213e6d36f8c. 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/8d8a8039-edd2-4d46-b94a-7b21abfde124.json and https://artists.proofprofile.net/proofs/artist/8d8a8039-edd2-4d46-b94a-7b21abfde124.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xc7fafe3fe80429fa4f658a3eaff60d7c9c03862b848e952286bbd213e6d36f8c","name":"John Kusiak","registered_at":"2026-06-17T15:24:49Z","symbol":"NIM1437582","token_address":"0x1566a5a9b571a881cd02ec5453a4b199e7f88dc7","type":"artist","uuid":"8d8a8039-edd2-4d46-b94a-7b21abfde124"}