[
 {
  "type": "verifiable-workflow-receipt",
  "version": "0.3",
  "workflow_id": "11111111-2222-4333-8444-555555555555",
  "receipt_id": "66666666-7777-4888-8999-aaaaaaaaaaaa",
  "session_id": "sess-neg-corpus",
  "goal": "negative-corpus workflow base",
  "status": "completed",
  "steps": [
   {
    "seq": 1,
    "tool": "tool_1",
    "receipt_id": "e80168eb-a6a1-4ec9-8478-ac108f9397ff",
    "receipt_hash": "0000000000000000000000000000000000000000000000000000000000000000",
    "started_at": "2026-09-27T09:00:00Z",
    "ended_at": "2026-09-27T09:00:30Z",
    "status": "completed"
   },
   {
    "seq": 2,
    "tool": "tool_2",
    "receipt_id": "514fe841-bbdd-4804-9ef4-6828842d8763",
    "receipt_hash": "0000000000000000000000000000000000000000000000000000000000000000",
    "started_at": "2026-09-27T09:01:00Z",
    "ended_at": "2026-09-27T09:01:30Z",
    "status": "completed"
   },
   {
    "seq": 3,
    "tool": "tool_3",
    "receipt_id": "a090bdad-f2cf-48c9-bc89-e9e17700fb15",
    "receipt_hash": "0000000000000000000000000000000000000000000000000000000000000000",
    "started_at": "2026-09-27T09:02:00Z",
    "ended_at": "2026-09-27T09:02:30Z",
    "status": "completed"
   },
   {
    "seq": 4,
    "tool": "tool_4",
    "receipt_id": "bf88a036-416b-456a-8e82-8c0991811d68",
    "receipt_hash": "0000000000000000000000000000000000000000000000000000000000000000",
    "started_at": "2026-09-27T09:03:00Z",
    "ended_at": "2026-09-27T09:03:30Z",
    "status": "completed"
   },
   {
    "seq": 5,
    "tool": "tool_5",
    "receipt_id": "ae795bf0-27f8-4cf2-8aef-3f8142b77217",
    "receipt_hash": "0000000000000000000000000000000000000000000000000000000000000000",
    "started_at": "2026-09-27T09:04:00Z",
    "ended_at": "2026-09-27T09:04:30Z",
    "status": "completed"
   }
  ],
  "merkle_root": "7c4817ca249edfeae259b98abf63ed38a31d9dbeebf5ee23139410a7a7f63b37",
  "output_hash": "0000000000000000000000000000000000000000000000000000000000000000",
  "verify_url": "https://example.com/verify"
 }
]