diff --git a/Address.js b/Address.js
index f274333..07333da 100644
--- a/Address.js
+++ b/Address.js
@@ -9,6 +9,7 @@ function Address() {
 Address.parent = parent;
 parent.applyEncodingsTo(Address);
 
+
 Address.prototype.validate = function() {
   this.doAsBinary(function() {
     Address.super(this, 'validate', arguments);
@@ -16,4 +17,9 @@ Address.prototype.validate = function() {
   });
 };
 
+Address.prototype.isValid = function() {
+  var answer = Address.super(this, 'isValid', arguments);
+  return answer;
+};
+
 module.exports = require('soop')(Address);
diff --git a/README.md b/README.md
index 2d0dee3..b65dc77 100644
--- a/README.md
+++ b/README.md
@@ -31,26 +31,19 @@ Validating a Bitcoin address:
 ```js
 var Address = require('bitcore/Address');
 
-var addrStrings = [
-  "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
-  "1A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx",
-  "A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx",
-  "1600 Pennsylvania Ave NW",
+var addrs = [
+  '1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa',
+  '1A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx',
+  'A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa',
+  '1600 Pennsylvania Ave NW',
 ].map(function(addr) {
   return new Address(addr);
 });
 
-addrStrings.forEach(function(addr) {
-
-  try {
-    addr.validate();
-    console.log(addr.data + ": is valid");
-  } catch(e) {
-    console.log(addr.data + ": is not a valid address. " + e);
-  }
-
+addrs.forEach(function(addr) {
+  var valid = addr.isValid();
+  console.log(addr.data + ' is ' + (valid ? '' : 'not ') + 'valid');
 });
-
 ```
 ## Monitoring Blocks and Transactions
 For this example you need a running bitcoind instance with RPC enabled. 
diff --git a/examples/Address.js b/examples/Address.js
index 1cc0573..af41311 100644
--- a/examples/Address.js
+++ b/examples/Address.js
@@ -4,22 +4,16 @@
 
 var Address = require('../Address');
 
-var addrStrings = [
-  "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
-  "1A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx",
-  "A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx",
-  "1600 Pennsylvania Ave NW",
+var addrs = [
+  '1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa',
+  '1A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx',
+  'A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa',
+  '1600 Pennsylvania Ave NW',
 ].map(function(addr) {
   return new Address(addr);
 });
 
-addrStrings.forEach(function(addr) {
-
-  try {
-    addr.validate();
-    console.log(addr.data + ": is valid");
-  } catch(e) {
-    console.log(addr.data + ": is not a valid address. " + e);
-  }
-
+addrs.forEach(function(addr) {
+  var valid = addr.isValid();
+  console.log(addr.data + ' is ' + (valid ? '' : 'not ') + 'valid');
 });
diff --git a/test/test.Address.js b/test/test.Address.js
index 758440e..21d1534 100644
--- a/test/test.Address.js
+++ b/test/test.Address.js
@@ -20,17 +20,31 @@ describe('Address', function() {
     var a = new Address('1KfyjCgBSMsLqiCbakfSdeoBUqMqLUiu3T');
     should.exist(a);
   });
-  it('should validate correctly', function() {
-    var a = new Address('1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa');
-    var m = new Address('32QBdjycLwbDTuGafUwaU5p5GxzSLPYoF6');
-    var b = new Address('11111111111111111111111111122222234');
-    a.validate.bind(a).should.not.throw(Error);
-    m.validate.bind(m).should.not.throw(Error);
-    b.validate.bind(b).should.throw(Error);
+  var data = [
+    ['1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa', true],
+    ['11111111111111111111111111122222234', false], // totally invalid
+    ['32QBdjycLwbDTuGafUwaU5p5GxzSLPYoF6', true],
+    ['1Q1pE5vPGEEMqRcVRMbtBK842Y6Pzo6nK9', true],
+    ['1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62i', true],
+    ['1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW600', false],  // bad checksum
+    ['1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW620', false],  // bad checksum
+    ['1ANNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62i', false],  // data changed, original checksum.
+    ['1A Na15ZQXAZUgFiqJ2i7Z2DPU2J6hW62i', false],  // invalid chars
+    ['1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62j', false],  // checksums don't match.
+    ['1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62!', false],  // bad char (!)
+    ['1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62iz', false], // too long Bitcoin address
+    ['1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62izz', false],// too long Bitcoin address
+    ['2cFupjhnEsSn59qHXstmK2ffpLv2', false],        // valid base58 invalid data
+  ];
+  data.forEach(function(datum) {
+    var address = datum[0];
+    var result = datum[1];
+    it('should validate correctly ' + address, function() {
+      var a = new Address(address);
+      var s = a.toString();
+
+      a.isValid().should.equal(result);
+      s.should.equal(a.toString()); // check that validation doesn't change data
+    });
   });
 });
-
-
-
-
-