{
  "spec": "JCR-1 event-log v1",
  "schema_id": "event-log/1",
  "canonical_encoding": "JSON with sorted object keys (recursively); UTF-8; no whitespace; no float coercion. receipt_hash is BLAKE3 hex of the canonical bytes.",
  "note": "Two vectors covering the two states an event-log/1 receipt can land in: a small log snapshot (goal + 2 objects + 1 relation + 1 llm_req/resp pair, 120 tokens) and a larger session snapshot (multiple LLM/tool calls, several objects, a few receipts emitted inline). Implementers in any language MUST round-trip every receipt under canonical encoding and assert byte-equal receipt_hash against the embedded value.",
  "vector_count": 2,
  "vectors": [
    {
      "n": 1,
      "description": "Small log snapshot: goal + 2 objects + 1 relation + 1 LLM exchange; 120 tokens.",
      "receipt_hash": "e3081135c35e31294b128ceb5d075c1b35e5ead4ab837b6aad7d03eb65f18c04",
      "receipt": {
        "jc_receipt": "event-log/1",
        "id": "log-demo:b3abc",
        "closed_at": "2026-06-05T00:00:00Z",
        "steward": "did:keri:EJ9testStewardAID000000000000000",
        "log_id": "log-demo",
        "head_event_hash": "b3abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123",
        "chain_depth": 5,
        "counts": {
          "goal": 1,
          "object": 2,
          "relation": 1,
          "llm_req": 1,
          "llm_resp": 0,
          "tool_req": 0,
          "tool_resp": 0,
          "patch": 0,
          "receipt": 0
        },
        "total_tokens": 120
      }
    },
    {
      "n": 2,
      "description": "Larger session snapshot: 3 goals, 7 objects, 4 relations, 3 LLM exchanges, 2 tool exchanges, 1 patch, 2 receipts emitted inline; 1450 tokens.",
      "receipt_hash": "99a452d54d9767d487f411d1c147350fff39c99dea6256d5dd134b9afba7668b",
      "receipt": {
        "jc_receipt": "event-log/1",
        "id": "log-session-7:b3def",
        "closed_at": "2026-06-05T00:01:00Z",
        "steward": "did:keri:EJ9testStewardAID000000000000000",
        "log_id": "log-session-7",
        "head_event_hash": "b3defabcdef0123456789abcdef0123456789abcdef0123456789abcdef01",
        "chain_depth": 22,
        "counts": {
          "goal": 3,
          "object": 7,
          "relation": 4,
          "llm_req": 3,
          "llm_resp": 3,
          "tool_req": 2,
          "tool_resp": 2,
          "patch": 1,
          "receipt": 2
        },
        "total_tokens": 1450
      }
    }
  ]
}