{
  "title": "Exchange halt and resumption event data for AI review",
  "source_page": "https://fiund.com/industries/exchange-halt-event-history-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "An expected resumption time is not a confirmed resumption event",
    "context": "A fictional symbol on an imaginary venue has synthetic timestamped notices. No live market data, trading system or real investment decision is involved.",
    "records": [
      [
        "EH1",
        "Halt notice",
        "Symbol DEMO-A: halt effective 09:00, notice published 09:01; status halted."
      ],
      [
        "EH2",
        "Provisional update",
        "Published 09:10 for DEMO-A: possible resumption 09:30, confirmation pending. DEMO-B has a separate confirmed 09:20 event."
      ],
      [
        "EH3",
        "Later confirmation",
        "DEMO-A resumption effective 09:35, confirmation published 09:36."
      ]
    ],
    "question": "What can an as-of-09:25 summary say about DEMO-A, and what changes once the 09:36 publication is available?",
    "answer": "At 09:25, EH1 establishes DEMO-A's halt and EH2 gives only a possible 09:30 resumption awaiting confirmation. DEMO-B's confirmed event belongs to another symbol. After 09:36, EH3 supports DEMO-A's actual reported resumption at 09:35. Preserve publication time separately from effective event time so the later confirmation cannot leak into the earlier as-of summary or turn the provisional estimate into an observed event.",
    "failureModes": [
      "Reporting an expected future time as a completed event.",
      "Using a similar symbol's confirmation or a later publication in an earlier information set."
    ],
    "fields": [
      [
        "Symbol and notice source",
        "Prevents cross-symbol association."
      ],
      [
        "Publication and effective timestamps",
        "Defines what was knowable at each cutoff."
      ],
      [
        "Status and confirmation qualifier",
        "Distinguishes a proposal from a reported event."
      ]
    ],
    "holdout": "Remove EH3. Require the later summary to preserve uncertainty rather than infer resumption simply because 09:30 has passed.",
    "boundary": "Use original offline notices. Exclude licensed feeds, internal controls and real trading instructions; this is a historical-summary exercise."
  }
}