From 19af0f27211a497dda5fe77b2f093977cc9b21d6 Mon Sep 17 00:00:00 2001
From: bt3gl <1130416+bt3gl@users.noreply.github.com>
Date: Fri, 23 Sep 2022 13:45:52 -0700
Subject: [PATCH] =?UTF-8?q?=F0=9F=A5=9E=20add=20note=20on=20PREVRANDAO?=
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---
 vulnerabilities/random_numbers.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/vulnerabilities/random_numbers.md b/vulnerabilities/random_numbers.md
index 8e516d0..f6bc59a 100644
--- a/vulnerabilities/random_numbers.md
+++ b/vulnerabilities/random_numbers.md
@@ -2,7 +2,12 @@
 
 <br>
 
-* post-merge, the `BLOCKHASH` opcode will still be available for use, but given that it will no longer be forged through the proof of work hashing process, the pseudorandomness provided by this opcode will be much weaker.
+### post-merge notes
+
+<br>
+
+* `BLOCKHASH` opcode will still be available, but given that it will no longer be forged through the proof of work hashing process, the pseudorandomness provided by this opcode will be much weaker.
+* `DIFFICULTY` is renamed to `PREVRANDAO`, and return the output of the randomness beacon provided by the beacon chain. It's stronger than `BLOCKHASH` but still biasable.
 
 
 <br>