Merge pull request #578 from bitcoinjs/coinbase

Add isCoinbase

src/transaction.js

@@ -87,6 +87,10 @@ Transaction.isCoinbaseHash = function (buffer) {
   })
 }
 
+Transaction.prototype.isCoinbase = function () {
+  return this.ins.length === 1 && Transaction.isCoinbaseHash(this.ins[0].hash)
+}
+
 var EMPTY_SCRIPT = new Buffer(0)
 
 Transaction.prototype.addInput = function (hash, index, sequence, scriptSig) {

test/transaction.js

@@ -162,6 +162,16 @@ describe('Transaction', function () {
     })
   })
 
+  describe('isCoinbase', function () {
+    fixtures.valid.forEach(function (f) {
+      it('should return ' + f.coinbase + ' for ' + f.id, function () {
+        var tx = Transaction.fromHex(f.hex)
+
+        assert.strictEqual(tx.isCoinbase(), f.coinbase)
+      })
+    })
+  })
+
   // TODO:
   //  hashForSignature: [Function],
 })