diff --git a/core-test/src/test/scala/org/bitcoins/core/protocol/transaction/TransactionTest.scala b/core-test/src/test/scala/org/bitcoins/core/protocol/transaction/TransactionTest.scala
index 17bd95ae19..b3a8aff911 100644
--- a/core-test/src/test/scala/org/bitcoins/core/protocol/transaction/TransactionTest.scala
+++ b/core-test/src/test/scala/org/bitcoins/core/protocol/transaction/TransactionTest.scala
@@ -405,6 +405,13 @@ class TransactionTest extends BitcoinSUnitTest {
     assert(tx.hex == hex)
   }
 
+  it must "parse 1c1f50eb03c28c56ea0f2abdff483e836a8110f365cd678af1ae892a550f71eb" in {
+    val hex =
+      "0100000001c5b9f89aeebb94f6838d9e8b0c0876dd7b62249a14f7c3acd466a4a6682c2530010000006b483045022068d7ba61ae4670fe857ca4617413e2a8f666c7a30dbee9ad52a77406f62fd4bb0221009ed0034c8005b17b8e85e5b5d9cd35a79914665863c1ea85201ff0b42ec1f48b01210291b3da73ea3ce05d942315135d10532b58175568092116da909da0cb42006a54ffffffff0248cf9700000000001976a91452b5f62ff6a34dc0937baa262314649b22caebec88ace8030000000000001714e41346a0f116a7d04984c2780a396b18b0e47ea7b17500000000"
+    val tx = Transaction.fromHex(hex)
+    assert(tx.hex == hex)
+  }
+
   private def findInput(
       tx: Transaction,
       outPoint: TransactionOutPoint): Option[(TransactionInput, Int)] = {
diff --git a/core/src/main/scala/org/bitcoins/core/protocol/script/ScriptPubKey.scala b/core/src/main/scala/org/bitcoins/core/protocol/script/ScriptPubKey.scala
index 0b9edf190f..c979c151da 100644
--- a/core/src/main/scala/org/bitcoins/core/protocol/script/ScriptPubKey.scala
+++ b/core/src/main/scala/org/bitcoins/core/protocol/script/ScriptPubKey.scala
@@ -418,7 +418,7 @@ sealed trait LockTimeScriptPubKey extends RawScriptPubKey {
     asm.head match {
       case scriptNumOp: ScriptNumberOperation =>
         ScriptNumber(scriptNumOp.toLong)
-      case _: BytesToPushOntoStack => ScriptNumber(asm(1).hex)
+      case _: BytesToPushOntoStack => ScriptNumber(asm(1).bytes)
       case _: ScriptConstant | _: ScriptOperation =>
         throw new IllegalArgumentException(
           "In a LockTimeScriptPubKey, " +
@@ -496,26 +496,35 @@ object CLTVScriptPubKey extends ScriptFactory[CLTVScriptPubKey] {
       if (
         P2SHScriptPubKey.isValidAsm(tailTokens) || tailTokens
           .contains(OP_CHECKLOCKTIMEVERIFY)
-      ) return false
-      asm.slice(0, 4) match {
-        case Seq(_: BytesToPushOntoStack,
-                 _: ScriptConstant,
-                 OP_CHECKLOCKTIMEVERIFY,
-                 OP_DROP) =>
-          validScriptAfterLockTime(tailTokens)
-        case _ => false
+      ) {
+        false
+      } else {
+        asm.slice(0, 4) match {
+          case Seq(_: BytesToPushOntoStack,
+                   s: ScriptConstant,
+                   OP_CHECKLOCKTIMEVERIFY,
+                   OP_DROP) =>
+            //can only have up to 5 byte numbers for CLTV
+            s.byteSize <= 5 && validScriptAfterLockTime(tailTokens)
+          case _ => false
+        }
       }
+
     } else {
       val tailTokens = asm.slice(3, asm.length)
       if (
         P2SHScriptPubKey.isValidAsm(tailTokens) || tailTokens
           .contains(OP_CHECKLOCKTIMEVERIFY)
-      ) return false
-      asm.slice(0, 3) match {
-        case Seq(_: ScriptNumberOperation, OP_CHECKLOCKTIMEVERIFY, OP_DROP) =>
-          validScriptAfterLockTime(tailTokens)
-        case _ => false
+      ) {
+        false
+      } else {
+        asm.slice(0, 3) match {
+          case Seq(_: ScriptNumberOperation, OP_CHECKLOCKTIMEVERIFY, OP_DROP) =>
+            validScriptAfterLockTime(tailTokens)
+          case _ => false
+        }
       }
+
     }
   }
 
@@ -587,25 +596,35 @@ object CSVScriptPubKey extends ScriptFactory[CSVScriptPubKey] {
       if (
         P2SHScriptPubKey.isValidAsm(tailTokens) || tailTokens
           .contains(OP_CHECKSEQUENCEVERIFY)
-      ) return false
-      asm.slice(0, 4) match {
-        case Seq(_: BytesToPushOntoStack,
-                 _: ScriptConstant,
-                 OP_CHECKSEQUENCEVERIFY,
-                 OP_DROP) =>
-          CLTVScriptPubKey.validScriptAfterLockTime(tailTokens)
-        case _ => false
+      ) {
+        false
+      } else {
+        asm.slice(0, 4) match {
+          case Seq(_: BytesToPushOntoStack,
+                   s: ScriptConstant,
+                   OP_CHECKSEQUENCEVERIFY,
+                   OP_DROP) =>
+            //check that the byteSize of the ScriptNum is less than or equal to 5
+            //as per BIP112
+            s.byteSize <= 5 &&
+              CLTVScriptPubKey.validScriptAfterLockTime(tailTokens)
+          case _ => false
+        }
       }
+
     } else {
       val tailTokens = asm.slice(3, asm.length)
       if (
         P2SHScriptPubKey.isValidAsm(tailTokens) || tailTokens
           .contains(OP_CHECKSEQUENCEVERIFY)
-      ) return false
-      asm.slice(0, 3) match {
-        case Seq(_: ScriptNumberOperation, OP_CHECKSEQUENCEVERIFY, OP_DROP) =>
-          CLTVScriptPubKey.validScriptAfterLockTime(tailTokens)
-        case _ => false
+      ) {
+        false
+      } else {
+        asm.slice(0, 3) match {
+          case Seq(_: ScriptNumberOperation, OP_CHECKSEQUENCEVERIFY, OP_DROP) =>
+            CLTVScriptPubKey.validScriptAfterLockTime(tailTokens)
+          case _ => false
+        }
       }
     }
   }