public static String encodeChecked(Integer version, byte[] data) {
		return encode(addChecksum(version, data));
	}
@Test
	public void encodeCheckedTest() {
		String a = "hello world";
		String encode = Base58.encodeChecked(0, a.getBytes());
		assertEquals(1 + "3vQB7B6MrGQZaxCuFg4oh", encode);

		// 无版本位
		encode = Base58.encodeChecked(null, a.getBytes());
		assertEquals("3vQB7B6MrGQZaxCuFg4oh", encode);
	}