Add var-155 audit

audit/var-155.md

@@ -0,0 +1,33 @@
+# Chain Variable Transaction 155
+
+## Changes
+
+This transaction unsets `security_reward_bugfix` due to blockchain-etl
+performance issues.
+
+# Version threshold
+
+None
+
+## Transaction
+
+```erlang
+[{1538320,
+  [{blockchain_txn_vars_v1_pb,[],0,
+                              <<48,68,2,32,5,31,175,175,208,65,37,171,182,219,142,13,
+                                110,101,182,116,231,231,19,107,11,86,80,98,86,60,221,23,
+                                143,57,221,98,2,32,65,107,58,154,53,144,150,65,119,246,
+                                183,107,142,241,13,225,127,55,133,160,156,156,7,54,157,
+                                46,151,194,188,226,197,169>>,
+                              <<>>,<<>>,[],
+                              [<<"security_reward_bugfix">>],
+                              155,[],[],[]}]}]
+```
+
+## Acceptance block
+
+1538320
+
+## Acceptance block time
+
+Fri 23 Sep 00:22:02 UTC 2022