diff --git a/lib/bcoin/chain.js b/lib/bcoin/chain.js
index cce5b0f9..8c7d9abc 100644
--- a/lib/bcoin/chain.js
+++ b/lib/bcoin/chain.js
@@ -447,7 +447,7 @@ Chain.prototype.fromJSON = function fromJSON(json) {
   if (this.index.bloom)
     this.index.bloom.reset();
   else
-    this.index.bloom = new bcoin.bloom(28 * 1024 * 1024, 16, 0xdeadbee0);
+    this.index.bloom = new bcoin.bloom(28 * 1024 * 1024, 16, 0xdeadbeef);
 
   if (this.index.hashes.length === 0)
     this.add(new bcoin.block(constants.genesis, 'block'));
diff --git a/lib/bcoin/script.js b/lib/bcoin/script.js
index dd5225dc..1578196f 100644
--- a/lib/bcoin/script.js
+++ b/lib/bcoin/script.js
@@ -110,6 +110,10 @@ script.subscript = function subscript(s) {
 };
 
 script.execute = function execute(s, stack, tx) {
+  if (s.length > 10000) {
+    return false;
+  }
+
   for (var pc = 0; pc < s.length; pc++) {
     var o = s[pc];
     if (Array.isArray(o)) {