{
  "id": 7549,
  "title": "EIP-7549: Move committee index outside Attestation",
  "status": "Final",
  "type": "Standards Track",
  "category": "Core",
  "summary": "Simplifies the structure of validator attestations by moving the committee index field outside the signed message, making verification and aggregation cheaper.",
  "impacts": [
    "No direct impact",
    "No changes to applications.",
    "Wallets unchanged.",
    "Consensus monitoring tools have to update parsing of attestations.",
    "No direct change on L2s unless they rely on attestation data.",
    "Lower resource usage for attestation handling and aggregation, less data to process.",
    "Implementation changes to attestation structures and verification.",
    "Execution layer not affected.",
    "More efficient consensus verification and aggregation",
    "Improves performance for consensus nodes processing lot of signatures"
  ],
  "discussion_url": "https://ethereum-magicians.org/t/eip-7549-move-committee-index-outside-attestation/16390",
  "source_markdown_url": "https://github.com/ethereum/EIPs/blob/master/EIPS/eip-7549.md",
  "canonical_url": "/latest/eips/7549.json",
  "markdown_url": "/latest/eips/7549.md",
  "citations": [
    {
      "recordId": "eip-7549",
      "artifactPath": "normalized/7549.json",
      "url": "/records/proposal/eip-7549/normalized/7549.json",
      "label": "EIP-7549: Move committee index outside Attestation",
      "snippet": "Simplifies the structure of validator attestations by moving the committee index field outside the signed message, making verification and aggregation cheaper."
    }
  ]
}