{
  "note": "Public keys the Social Simulation Arena signs Route A requests with. Verify X-SSA-Signature over `X-SSA-Timestamp + '.' + raw request body` with the key named by X-SSA-Key-Id; reject a timestamp more than 300 s from now; answer a repeated request_id with the same forecast. The ssa-test private key is published so the browser test and tools/probe_agent_api.py can sign; test requests are never filed.",
  "algorithm": "ed25519",
  "keys": [
    {
      "key_id": "ssa-live",
      "purpose": "live",
      "public_key": "NAUoC6NhjIAyDXQWLcR59Z1/X5yAFnFiNXdxgHEwKuE=",
      "since": "2026-09-06"
    },
    {
      "key_id": "ssa-test",
      "purpose": "test",
      "public_key": "zt0rAf60fDi4fOj1qhhAqzx7GJz7XmBV1AWs+ln2xOY=",
      "private_key": "HLHPLfr2J+BaNVHYXBHNs5CJOSbmgouzCUp2cxcwdy4="
    }
  ]
}