diff --git a/lib/bcoin/address.js b/lib/bcoin/address.js
index fa641c08..f9272204 100644
--- a/lib/bcoin/address.js
+++ b/lib/bcoin/address.js
@@ -250,14 +250,14 @@ Address.prototype.fromScript = function fromScript(script) {
   }
 
   // Fast case
-  if (script.isPubkey()) {
+  if (script.isPubkey(true)) {
     this.hash = utils.hash160(script.raw.slice(1, script.raw[0] + 1));
     this.type = 'pubkeyhash';
     this.version = -1;
     return this;
   }
 
-  if (script.isPubkeyhash()) {
+  if (script.isPubkeyhash(true)) {
     this.hash = script.raw.slice(3, 23);
     this.type = 'pubkeyhash';
     this.version = -1;
@@ -272,14 +272,14 @@ Address.prototype.fromScript = function fromScript(script) {
   }
 
   // Slow case (allow non-minimal data and parse script)
-  if (script.isPubkey(true)) {
+  if (script.isPubkey()) {
     this.hash = utils.hash160(script.code[0].data);
     this.type = 'pubkeyhash';
     this.version = -1;
     return this;
   }
 
-  if (script.isPubkeyhash(true)) {
+  if (script.isPubkeyhash()) {
     this.hash = script.code[2].data;
     this.type = 'pubkeyhash';
     this.version = -1;
diff --git a/lib/bcoin/coins.js b/lib/bcoin/coins.js
index b405b056..70346033 100644
--- a/lib/bcoin/coins.js
+++ b/lib/bcoin/coins.js
@@ -193,7 +193,7 @@ Coins.prototype.toRaw = function toRaw(writer) {
     prefix = 0;
 
     // Saves up to 7 bytes.
-    if (output.script.isPubkeyhash()) {
+    if (output.script.isPubkeyhash(true)) {
       prefix = 1;
       hash = output.script.code[2].data;
     } else if (output.script.isScripthash()) {
diff --git a/lib/bcoin/mtx.js b/lib/bcoin/mtx.js
index a41ed469..f591586f 100644
--- a/lib/bcoin/mtx.js
+++ b/lib/bcoin/mtx.js
@@ -300,7 +300,7 @@ MTX.prototype.scriptInput = function scriptInput(index, addr) {
     vector = input.script;
   }
 
-  if (prev.isPubkey(true)) {
+  if (prev.isPubkey()) {
     // P2PK
     if (!utils.equal(prev.get(1), addr.publicKey))
       return false;
@@ -310,7 +310,7 @@ MTX.prototype.scriptInput = function scriptInput(index, addr) {
       return true;
 
     vector.set(0, opcodes.OP_0);
-  } else if (prev.isPubkeyhash(true)) {
+  } else if (prev.isPubkeyhash()) {
     // P2PKH
     if (!utils.equal(prev.get(2), addr.keyHash))
       return false;
@@ -474,7 +474,7 @@ MTX.prototype.signInput = function signInput(index, addr, key, type) {
   signature = this.createSignature(index, prev, key, type, version);
 
   // P2PK
-  if (prev.isPubkey(true)) {
+  if (prev.isPubkey()) {
     // Already signed.
     if (Script.isSignature(vector.get(0)))
       return true;
@@ -493,7 +493,7 @@ MTX.prototype.signInput = function signInput(index, addr, key, type) {
   }
 
   // P2PKH
-  if (prev.isPubkeyhash(true)) {
+  if (prev.isPubkeyhash()) {
     // Already signed.
     if (Script.isSignature(vector.get(0)))
       return true;
@@ -673,10 +673,10 @@ MTX.prototype.isSigned = function isSigned() {
       len = vector.length;
     }
 
-    if (prev.isPubkey(true)) {
+    if (prev.isPubkey()) {
       if (!Script.isSignature(vector.get(0)))
         return false;
-    } else if (prev.isPubkeyhash(true)) {
+    } else if (prev.isPubkeyhash()) {
       if (!Script.isSignature(vector.get(0)))
         return false;
     } else if (prev.isMultisig()) {
@@ -883,11 +883,11 @@ MTX.prototype.maxSize = function maxSize(options, force) {
       }
     }
 
-    if (prev.isPubkey(true)) {
+    if (prev.isPubkey()) {
       // P2PK
       // OP_PUSHDATA0 [signature]
       size += 1 + 73;
-    } else if (prev.isPubkeyhash(true)) {
+    } else if (prev.isPubkeyhash()) {
       // P2PKH
       // OP_PUSHDATA0 [signature]
       size += 1 + 73;
diff --git a/lib/bcoin/script.js b/lib/bcoin/script.js
index 955a8d5c..725be882 100644
--- a/lib/bcoin/script.js
+++ b/lib/bcoin/script.js
@@ -2827,53 +2827,54 @@ Script.prototype.getAddress = function getAddress() {
 
 /**
  * Test whether the output script is pay-to-pubkey.
- * @param {Boolean} [sloppy=false] - Allow non-minimal scripts.
+ * @param {Boolean} [minimal=false] - Minimaldata only.
  * @returns {Boolean}
  */
 
-Script.prototype.isPubkey = function isPubkey(sloppy) {
-  if (sloppy) {
-    return this.code.length === 2
-      && Script.isKey(this.code[0].data)
-      && this.code[1].value === opcodes.OP_CHECKSIG;
+Script.prototype.isPubkey = function isPubkey(minimal) {
+  if (minimal) {
+    return this.raw[0] >= 33 && this.raw[0] <= 65
+      && this.raw[0] + 2 === this.raw.length
+      && this.raw[this.raw.length - 1] === opcodes.OP_CHECKSIG;
   }
 
-  return this.raw[0] >= 33 && this.raw[0] <= 65
-    && this.raw[0] + 2 === this.raw.length
-    && this.raw[this.raw.length - 1] === opcodes.OP_CHECKSIG;
+  return this.code.length === 2
+    && Script.isKey(this.code[0].data)
+    && this.code[1].value === opcodes.OP_CHECKSIG;
 };
 
 /**
  * Test whether the output script is pay-to-pubkeyhash.
- * @param {Boolean} [sloppy=false] - Allow non-minimal scripts.
+ * @param {Boolean} [minimal=false] - Minimaldata only.
  * @returns {Boolean}
  */
 
-Script.prototype.isPubkeyhash = function isPubkeyhash(sloppy) {
-  if (sloppy) {
-    return this.code.length === 5
-      && this.code[0].value === opcodes.OP_DUP
-      && this.code[1].value === opcodes.OP_HASH160
-      && Script.isHash(this.code[2].data)
-      && this.code[3].value === opcodes.OP_EQUALVERIFY
-      && this.code[4].value === opcodes.OP_CHECKSIG;
+Script.prototype.isPubkeyhash = function isPubkeyhash(minimal) {
+  if (!minimal) {
+    return this.raw.length === 25
+      && this.raw[0] === opcodes.OP_DUP
+      && this.raw[1] === opcodes.OP_HASH160
+      && this.raw[2] === 0x14
+      && this.raw[23] === opcodes.OP_EQUALVERIFY
+      && this.raw[24] === opcodes.OP_CHECKSIG;
   }
 
-  return this.raw.length === 25
-    && this.raw[0] === opcodes.OP_DUP
-    && this.raw[1] === opcodes.OP_HASH160
-    && this.raw[2] === 0x14
-    && this.raw[23] === opcodes.OP_EQUALVERIFY
-    && this.raw[24] === opcodes.OP_CHECKSIG;
+  return this.code.length === 5
+    && this.code[0].value === opcodes.OP_DUP
+    && this.code[1].value === opcodes.OP_HASH160
+    && Script.isHash(this.code[2].data)
+    && this.code[3].value === opcodes.OP_EQUALVERIFY
+    && this.code[4].value === opcodes.OP_CHECKSIG;
 };
 
 /**
  * Test whether the output script is pay-to-multisig.
+ * @param {Boolean} [minimal=false] - Minimaldata only.
  * @returns {Boolean}
  */
 
-Script.prototype.isMultisig = function isMultisig() {
-  var m, n, i;
+Script.prototype.isMultisig = function isMultisig(minimal) {
+  var m, n, i, op;
 
   if (this.raw.length < 41)
     return false;
@@ -2895,8 +2896,15 @@ Script.prototype.isMultisig = function isMultisig() {
     return false;
 
   for (i = 1; i < n + 1; i++) {
-    if (!Script.isKey(this.code[i].data))
+    op = this.code[i];
+
+    if (!Script.isKey(op.data))
       return false;
+
+    if (minimal) {
+      if (!Script.isMinimal(op.data, op.value))
+        return false;
+    }
   }
 
   return true;
@@ -2919,11 +2927,11 @@ Script.prototype.isScripthash = function isScripthash() {
 
 /**
  * Test whether the output script is nulldata/opreturn.
- * @param {Boolean} [sloppy=false] - Allow non-minimal scripts.
+ * @param {Boolean} [minimal=false] - Minimaldata only.
  * @returns {Boolean}
  */
 
-Script.prototype.isNulldata = function isNulldata(sloppy) {
+Script.prototype.isNulldata = function isNulldata(minimal) {
   var i, op;
 
   if (this.raw.length > constants.script.MAX_OP_RETURN_BYTES)
@@ -2938,29 +2946,30 @@ Script.prototype.isNulldata = function isNulldata(sloppy) {
   if (this.raw.length === 1)
     return true;
 
-  if (sloppy) {
-    for (i = 1; i < this.code.length; i++) {
-      op = this.code[i];
-      if (op.data)
-        continue;
-      if (op.value === -1)
-        return false;
-      if (op.value > opcodes.OP_16)
-        return false;
-    }
-    return true;
+  if (minimal) {
+    if (this.raw.length === 2)
+      return Script.getSmall(this.raw[1]) !== -1;
+
+    if (this.raw[1] >= 0x01 && this.raw[1] <= 0x4b)
+      return this.raw[1] + 2 === this.raw.length;
+
+    if (this.raw[1] === opcodes.OP_PUSHDATA1)
+      return this.raw[2] > 75 && this.raw[2] + 3 === this.raw.length;
+
+    return false;
   }
 
-  if (this.raw.length === 2)
-    return Script.getSmall(this.raw[1]) !== -1;
+  for (i = 1; i < this.code.length; i++) {
+    op = this.code[i];
+    if (op.data)
+      continue;
+    if (op.value === -1)
+      return false;
+    if (op.value > opcodes.OP_16)
+      return false;
+  }
 
-  if (this.raw[1] >= 0x01 && this.raw[1] <= 0x4b)
-    return this.raw[1] + 2 === this.raw.length;
-
-  if (this.raw[1] === opcodes.OP_PUSHDATA1)
-    return this.raw[2] > 75 && this.raw[2] + 3 === this.raw.length;
-
-  return false;
+  return true;
 };
 
 /**
diff --git a/lib/bcoin/tx.js b/lib/bcoin/tx.js
index 07928dee..9b69bf2f 100644
--- a/lib/bcoin/tx.js
+++ b/lib/bcoin/tx.js
@@ -1735,7 +1735,7 @@ TX.prototype.isWatched = function isWatched(filter) {
         outpoint = bcoin.outpoint.fromTX(this, i);
         filter.add(outpoint.toRaw());
       } else if (filter.update === constants.filterFlags.PUBKEY_ONLY) {
-        if (output.script.isPubkey(true) || output.script.isMultisig()) {
+        if (output.script.isPubkey() || output.script.isMultisig()) {
           outpoint = bcoin.outpoint.fromTX(this, i);
           filter.add(outpoint.toRaw());
         }