{
  "id": 15809378,
  "title": "Building Verifiable AI Agent Audit Logs With Signed, Hash-Chained Record",
  "url": "https://urgent.news/2026/10/20/building-verifiable-ai-agent-audit-logs-with-signed-hash-chained",
  "topic": "ai",
  "section": "AI",
  "published": "2026-10-20T21:43:13.000Z",
  "source": {
    "name": "HackerNoon",
    "slug": "hackernoon",
    "url": "https://hackernoon.com/building-verifiable-ai-agent-audit-logs-with-signed-hash-chained-record?source=rss"
  },
  "original_language": "en",
  "account": "The log records each action taken by an AI agent as separate entries, using a signed, hash-chained structure. This ensures that any attempt to delete, reorder, or edit a step will break the chain, making tampering visible. The operator, agent itself, or an attacker with the agent's credentials could potentially manipulate the log, but the design prevents this by anchoring each step to the previous one with a cryptographic hash. Each entry contains details such as the agent ID, run ID, step number, action performed, input and output hashes, a timestamp, and a signature from the agent's wallet. This creates an immutable record that can be verified by auditors or other parties. The log is stored on a write-once cloud storage platform, ensuring that the operator cannot alter the log after it has been recorded. The design also allows for expiration of the log after a certain period, after which it can be extended but not shortened or altered. The system was tested with a real AI agent, demonstrating its effectiveness in preventing tampering and providing a clear audit trail.",
  "summary": "How I built a tamper-evident AI agent audit log with Arkiv, signed hash chains, and browser-based verification, then tested it against forged entries.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}