diff --git a/src/address.js b/src/address.js
index d1d7b82..5457e52 100644
--- a/src/address.js
+++ b/src/address.js
@@ -16,7 +16,6 @@ Address.fromBase58Check = function(string) {
 
   return new Address(decode.payload, decode.version)
 }
-Address.prototype.fromString = Address.prototype.fromBase58Check
 
 // Export functions
 Address.prototype.toBase58Check = function () {
diff --git a/src/script.js b/src/script.js
index 8f3cd2c..f550878 100644
--- a/src/script.js
+++ b/src/script.js
@@ -23,32 +23,6 @@ Script.fromHex = function(hex) {
   return Script.fromBuffer(new Buffer(hex, 'hex'))
 }
 
-Script.fromPubKey = function(str) {
-  var script = new Script()
-  var s = str.split(' ')
-  for (var i in s) {
-    if (Opcode.map.hasOwnProperty(s[i])) {
-      script.writeOp(Opcode.map[s[i]])
-    } else {
-      script.writeBytes(convert.hexToBytes(s[i]))
-    }
-  }
-  return script
-}
-
-Script.fromScriptSig = function(str) {
-  var script = new Script()
-  var s = str.split(' ')
-  for (var i in s) {
-    if (Opcode.map.hasOwnProperty(s[i])) {
-      script.writeOp(Opcode.map[s[i]])
-    } else {
-      script.writeBytes(convert.hexToBytes(s[i]))
-    }
-  }
-  return script
-}
-
 /**
  * Update the parsed script representation.
  *
@@ -399,16 +373,6 @@ Script.createOutputScript = function(address, network) {
   return script
 }
 
-/**
- * Extract pubkeys from a multisig script
- */
-
-Script.prototype.extractPubkeys = function() {
-  return this.chunks.filter(function(chunk) {
-    return(chunk[0] == 4 && chunk.length == 65 || chunk[0] < 4 && chunk.length == 33)
-  })
-}
-
 // m [pubKeys ...] n OP_CHECKMULTISIG
 Script.createMultisigOutputScript = function(m, pubKeys) {
   var script = new Script()
diff --git a/src/transaction.js b/src/transaction.js
index 64bb41a..0b346a4 100644
--- a/src/transaction.js
+++ b/src/transaction.js
@@ -380,40 +380,6 @@ Transaction.prototype.sign = function(index, key, type, network) {
   this.setScriptSig(index, scriptSig)
 }
 
-// Takes outputs of the form [{ output: 'txhash:index', address: 'address' },...]
-Transaction.prototype.signWithKeys = function(keys, outputs, type) {
-  type = type || SIGHASH_ALL
-
-  var addrdata = keys.map(function(key) {
-    assert(key instanceof ECKey)
-
-    return {
-      key: key,
-      address: key.getAddress().toString()
-    }
-  })
-
-  var hmap = {}
-  outputs.forEach(function(o) {
-    hmap[o.output] = o
-  })
-
-  for (var i = 0; i < this.ins.length; i++) {
-    var outpoint = this.ins[i].outpoint.hash + ':' + this.ins[i].outpoint.index
-    var histItem = hmap[outpoint]
-
-    if (!histItem) continue;
-
-    var thisInputAddrdata = addrdata.filter(function(a) {
-      return a.address == histItem.address
-    })
-
-    if (thisInputAddrdata.length === 0) continue;
-
-    this.sign(i,thisInputAddrdata[0].key)
-  }
-}
-
 Transaction.prototype.signScriptSig = function(index, script, key, type) {
   type = type || SIGHASH_ALL