diff --git a/wizard-work/spark/spark_sum_verification.txt b/wizard-work/spark/spark_sum_verification.txt
new file mode 100644
index 0000000..93aa891
--- /dev/null
+++ b/wizard-work/spark/spark_sum_verification.txt
@@ -0,0 +1 @@
+VERIFIED: Sum of 1 to 1000 = 500500 (via formula n*(n+1)/2)
\ No newline at end of file