John Brough
type: MusicGroup
description: John Brough (; rhymes with "huff") (September 17, 1811 – August 29, 1865) was a War Democrat politician from Ohio. He served as the 26th governor of Ohio during the final years of the American Civil W
popularity: 10
followers: 49
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x08d5f66929c3a137804b463a972ade4acaa4f612828e1a15047abeb79dcf298b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae4f59f9-bb6a-4dd9-aa81-63f26a727cad.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae4f59f9-bb6a-4dd9-aa81-63f26a727cad.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ae4f59f9-bb6a-4dd9-aa81-63f26a727cad
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x08d5f66929c3a137804b463a972ade4acaa4f612828e1a15047abeb79dcf298b","name":"John Brough","registered_at":"2026-06-20T10:51:55Z","symbol":"NIM1595967","token_address":"0x77a21b7a06ac82b665817dce3f62c7518f61fce5","type":"artist","uuid":"ae4f59f9-bb6a-4dd9-aa81-63f26a727cad"}
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 0x08d5f66929c3a137804b463a972ade4acaa4f612828e1a15047abeb79dcf298b. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae4f59f9-bb6a-4dd9-aa81-63f26a727cad.json and https://artists.proofprofile.net/proofs/artist/ae4f59f9-bb6a-4dd9-aa81-63f26a727cad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0x08d5f66929c3a137804b463a972ade4acaa4f612828e1a15047abeb79dcf298b","name":"John Brough","registered_at":"2026-06-20T10:51:55Z","symbol":"NIM1595967","token_address":"0x77a21b7a06ac82b665817dce3f62c7518f61fce5","type":"artist","uuid":"ae4f59f9-bb6a-4dd9-aa81-63f26a727cad"}