From 74c29d0df7a5d5ed0ec3460cad1e21886ad56100 Mon Sep 17 00:00:00 2001
From: dimxy <dimxy@komodoplatform.com>
Date: Tue, 21 May 2019 22:12:46 +0500
Subject: [PATCH] added validation for rekt txid

---
 src/cc/prices.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/cc/prices.cpp b/src/cc/prices.cpp
index 5ab1ff12f..218211324 100644
--- a/src/cc/prices.cpp
+++ b/src/cc/prices.cpp
@@ -412,9 +412,14 @@ static bool ValidateFinalTx(struct CCcontract_info *cp, Eval *eval, const CTrans
     }
 
     vscript_t opret;
-    if (prices_finalopretdecode(finaltx.vout.back().scriptPubKey, bettxid, pk, lastheight, costbasis, lastprice, liquidationprice, equity, fee) == 0)
+    uint8_t funcId;
+    if ((funcId = prices_finalopretdecode(finaltx.vout.back().scriptPubKey, bettxid, pk, lastheight, costbasis, lastprice, liquidationprice, equity, fee)) == 0)
         return eval->Invalid("cannot decode opreturn for final tx");
 
+    // check rekt txid mining:
+    if( funcId == 'R' && (finaltx.GetHash().begin()[0] != 0 || finaltx.GetHash().begin()[31] != 0) )
+        return eval->Invalid("incorrect rekt txid");
+
     if (bettx.GetHash() != bettxid)
         return eval->Invalid("incorrect bettx id");