| When (UTC) | Who | Action | Trade / target | Detail |
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Filter by date range, action, a specific trade/target, or free text — the exact query an investigation starts from ("what happened on this trade last Tuesday", "everything this user did this month"). The log is hash-chained: the badge turns red if any entry was altered, because an audit trail you can quietly edit proves nothing. Served by the FIOS API this reads the live log at /audit (external firms see only their own actions); this static demo filters a seeded sample.