From 502026086c523f2ce12a7d114e7b05ac14b1d68c Mon Sep 17 00:00:00 2001
From: Ruben de Vries <ruben@rubensayshi.com>
Date: Fri, 6 Nov 2015 14:37:58 +0100
Subject: [PATCH] updated _estimateSize for bare multisig input

---
 lib/transaction/input/multisig.js  | 8 +++-----
 test/transaction/input/multisig.js | 2 +-
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/lib/transaction/input/multisig.js b/lib/transaction/input/multisig.js
index 2767a6f..03a8413 100644
--- a/lib/transaction/input/multisig.js
+++ b/lib/transaction/input/multisig.js
@@ -200,14 +200,12 @@ MultiSigInput.normalizeSignatures = function(transaction, input, inputIndex, sig
   });
 };
 
-MultiSigInput.OPCODES_SIZE = 7; // serialized size (<=3) + 0 .. N .. M OP_CHECKMULTISIG
-MultiSigInput.SIGNATURE_SIZE = 74; // size (1) + DER (<=72) + sighash (1)
-MultiSigInput.PUBKEY_SIZE = 34; // size (1) + DER (<=33)
+MultiSigInput.OPCODES_SIZE = 1; // 0
+MultiSigInput.SIGNATURE_SIZE = 73; // size (1) + DER (<=72)
 
 MultiSigInput.prototype._estimateSize = function() {
   return MultiSigInput.OPCODES_SIZE +
-    this.threshold * MultiSigInput.SIGNATURE_SIZE +
-    this.publicKeys.length * MultiSigInput.PUBKEY_SIZE;
+    this.threshold * MultiSigInput.SIGNATURE_SIZE;
 };
 
 module.exports = MultiSigInput;
diff --git a/test/transaction/input/multisig.js b/test/transaction/input/multisig.js
index 62d79b7..dd05034 100644
--- a/test/transaction/input/multisig.js
+++ b/test/transaction/input/multisig.js
@@ -101,7 +101,7 @@ describe('MultiSigInput', function() {
       .from(output, [public1, public2, public3], 2)
       .to(address, 1000000);
     var input = transaction.inputs[0];
-    input._estimateSize().should.equal(257);
+    input._estimateSize().should.equal(147);
   });
   it('uses SIGHASH_ALL by default', function() {
     var transaction = new Transaction()