--- a/trb 6a90402592006d8fe36baaf750aef85fecedd1d795704850e0460d3b08813e6fe9c89a0f09b17d1c4d0b8aa051f4de44102b8c0fc830f66c30b104ce1253c9a3
+++ b/trb 96390862f77248384ec2b55fb116390e11ba7c6a2b7fd82fc783940419f0be95ec27907aad20fcd7c7cdb0819ed067c6f557ec608908efe74088e138253374f6
@@ -9482,7 +9482,7 @@
 #endif
 
 ##############################################################################
-97770 @ ./bitcoin/src/main.cpp
+97786 @ ./bitcoin/src/main.cpp
 ##############################################################################
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2012 The Bitcoin developers
@@ -10318,7 +10318,7 @@
             // Skip ECDSA signature verification when connecting blocks (fBlock=true)
             // before the last blockchain checkpoint. This is safe because block merkle hashes are
             // still computed and checked, and any change will be caught at the next checkpoint.
-            if (!(fBlock && (nBestHeight < Checkpoints::GetTotalBlocksEstimate())))
+            if (fVerifyAll || (!(fBlock && (nBestHeight < Checkpoints::GetTotalBlocksEstimate()))))
                 // Verify signature
                 if (!VerifySignature(txPrev, *this, i))
                     return DoS(100,error("ConnectInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,10).c_str()));
@@ -19489,7 +19489,7 @@
 }
 
 ##############################################################################
-17627 @ ./bitcoin/src/util.h
+17651 @ ./bitcoin/src/util.h
 ##############################################################################
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2012 The Bitcoin developers
@@ -19604,6 +19604,7 @@
 extern bool fPrintToConsole;
 extern bool fPrintToDebugger;
 extern bool fCanEat;
+extern bool fVerifyAll;
 extern char pszSetDataDir[MAX_PATH];
 extern bool fRequestShutdown;
 extern bool fShutdown;
@@ -20360,7 +20361,7 @@
 }
 
 ##############################################################################
-15408 @ ./bitcoin/src/init.cpp
+15568 @ ./bitcoin/src/init.cpp
 ##############################################################################
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2012 The Bitcoin developers
@@ -20538,6 +20539,7 @@
             "  -daemon          \t\t  " + _("Run in the background as a daemon and accept commands\n") +
             "  -debug           \t\t  " + _("Output extra debugging information\n") +
 	    "  -caneat          \t\t  " + _("Permit the use of 'eatblock'\n") +
+	    "  -verifyall       \t\t  " + _("Forbid the skipping of ECDSA signature verification between checkpoints.\n") +
             "  -logtimestamps   \t  "   + _("Prepend debug output with timestamp\n") +
             "  -printtoconsole  \t  "   + _("Send trace/debug info to console instead of debug.log file\n") +
             "  -rpcuser=<user>  \t  "   + _("Username for JSON-RPC connections\n") +
@@ -20560,6 +20562,7 @@
     fDebug = GetBoolArg("-debug");
     fDaemon = GetBoolArg("-daemon");
     fCanEat = GetBoolArg("-caneat");
+    fVerifyAll = GetBoolArg("-verifyall");
 
     if (fDaemon)
         fServer = true;
@@ -23346,7 +23349,7 @@
 #endif
 
 ##############################################################################
-27601 @ ./bitcoin/src/util.cpp
+27626 @ ./bitcoin/src/util.cpp
 ##############################################################################
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2012 The Bitcoin developers
@@ -23371,6 +23374,7 @@
 bool fPrintToConsole = false;
 bool fPrintToDebugger = false;
 bool fCanEat = false;
+bool fVerifyAll = false;
 char pszSetDataDir[MAX_PATH] = "";
 bool fRequestShutdown = false;
 bool fShutdown = false;