diff --git a/dist/index.js b/dist/index.js
index b269a97..8f47f00 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1,8 +1,9 @@
-'use strict';Object.defineProperty(exports, "__esModule", { value: true });exports.Outpoint = exports.Output = exports.Input = exports.Type = exports.Tx = exports.Block = exports.Period = undefined;var _period = require('./period');var _period2 = _interopRequireDefault(_period);
+'use strict';Object.defineProperty(exports, "__esModule", { value: true });exports.Util = exports.Outpoint = exports.Output = exports.Input = exports.Type = exports.Tx = exports.Block = exports.Period = undefined;var _period = require('./period');var _period2 = _interopRequireDefault(_period);
 var _block = require('./block');var _block2 = _interopRequireDefault(_block);
 var _transaction = require('./transaction');var _transaction2 = _interopRequireDefault(_transaction);
 var _input = require('./input');var _input2 = _interopRequireDefault(_input);
 var _output = require('./output');var _output2 = _interopRequireDefault(_output);
-var _outpoint = require('./outpoint');var _outpoint2 = _interopRequireDefault(_outpoint);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}exports.
+var _outpoint = require('./outpoint');var _outpoint2 = _interopRequireDefault(_outpoint);
+var _util = require('./util');var _util2 = _interopRequireDefault(_util);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}exports.
 
-Period = _period2.default;exports.Block = _block2.default;exports.Tx = _transaction2.default;exports.Type = _transaction.Type;exports.Input = _input2.default;exports.Output = _output2.default;exports.Outpoint = _outpoint2.default;
\ No newline at end of file
+Period = _period2.default;exports.Block = _block2.default;exports.Tx = _transaction2.default;exports.Type = _transaction.Type;exports.Input = _input2.default;exports.Output = _output2.default;exports.Outpoint = _outpoint2.default;exports.Util = _util2.default;
\ No newline at end of file
diff --git a/lib/index.js b/lib/index.js
index b2e4037..c03c6a0 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -4,5 +4,6 @@ import Tx, { Type } from './transaction';
 import Input from './input';
 import Output from './output';
 import Outpoint from './outpoint';
+import Util from './util';
 
-export { Period, Block, Tx, Type, Input, Output, Outpoint };
+export { Period, Block, Tx, Type, Input, Output, Outpoint, Util };