diff --git a/wizard-work/sol/q-open-triage-2026-10-28.verify.sh b/wizard-work/sol/q-open-triage-2026-10-28.verify.sh
index 81e4936..5c1bab9 100644
--- a/wizard-work/sol/q-open-triage-2026-10-28.verify.sh
+++ b/wizard-work/sol/q-open-triage-2026-10-28.verify.sh
@@ -21,7 +21,8 @@ test -s "$MD"   || fail "missing md: $MD"
 test -s "$JSON" || fail "missing json: $JSON"
 
 # 1. Oracle re-derivation of the open set.
-ORACLE="$REPO_ROOT/wizard-work/sol/q-open-triage-oracle.txt"
+ORACLE="$(mktemp)"
+trap 'rm -f "$ORACLE"' EXIT
 python3 "$REPO_ROOT/tools/queue_claim_check.py" --census > "$ORACLE" 2>&1
 rc=$?
 if [ $rc -ne 0 ]; then fail "oracle non-zero rc=$rc"; fi