{
  "type": "failure-mode",
  "name": "Unverified contributions in the chain",
  "slug": "unverified-contributions-in-the-chain",
  "section": {
    "id": "ceremony",
    "number": "04",
    "title": "Running or reusing a trusted setup",
    "url": "https://zkpick.com/ceremony/"
  },
  "url": "https://zkpick.com/ceremony/failure-modes/unverified-contributions-in-the-chain/",
  "markdown": "https://zkpick.com/md/ceremony/failure-modes/unverified-contributions-in-the-chain.md",
  "detail": "The final parameters verify, but individual contributions were never checked against their predecessors. A contribution that was malformed or replayed silently reduces the honest-participant count.",
  "mitigation": "Verify each contribution on receipt and re-verify the full chain before publication. Publish the verification output alongside the transcript.",
  "relatedOptions": [],
  "updated": "2026-09-12",
  "version": "1.3",
  "canonical": "https://zkpick.com/ceremony/failure-modes/unverified-contributions-in-the-chain/",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "authors": [
    "MarketComp"
  ]
}