Accept unknown witness versions for future softforks

Bit-Wasp · Nov 8, 2019 · 5e404b6 · 5e404b6
1 parent e5a6125
commit 5e404b6
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/Script/Interpreter/Interpreter.php b/src/Script/Interpreter/Interpreter.php
@@ -184,7 +184,8 @@ private function verifyWitnessProgram(WitnessProgram $witnessProgram, ScriptWitn
         } elseif ($flags & self::VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM) {
             return false;
         } else {
-            return false;
+            // Unknown versions are always 'valid' to permit future soft forks
+            return true;
         }
 
         $mainStack = new Stack();