Using something like wallet713 & grinbox, it becomes simple, see demo here: https://github.com/vault713/wallet713 https://github.com/vault713/wallet713 (Disclo

Using something like wallet713 & grinbox, it becomes simple, see demo here: https://github.com/vault713/wallet713 https://github.com/vault713/wallet713 (Disclosure: I work on the project.)