* [`Secondly sign the transaction`](#secondly-sign-the-transaction)
* [`Finally submit the transaction`](#finally-submit-the-transaction)
-> For more details, see ![API methods](https://github.com/Bytom/java-sdk/blob/master/doc/index.md#api-methods)
+> For more details, see [API methods](https://github.com/Bytom/java-sdk/blob/master/doc/index.md#api-methods)
## Create a key