From 1c51250ebf8c0ea5cfe1d8a64fbd41ca323b71a0 Mon Sep 17 00:00:00 2001
From: "mia von steinkirch, phd"
 <1130416+mvonsteinkirch@users.noreply.github.com>
Date: Tue, 20 Dec 2022 22:36:06 -0800
Subject: [PATCH] Create solidity_topics.md

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 solidity/solidity_topics.md | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 solidity/solidity_topics.md

diff --git a/solidity/solidity_topics.md b/solidity/solidity_topics.md
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+## solidity topics
+
+solidity provides two types of events:
+
+* anonymous 
+  * 4 topics may be indexed, and there is not signature hash (no filter)   
+* non-anonymous (default)
+  * up to 3 topics may be indexed, since the first topic is reserved to the event signature (filter)