How to create e-wallet with multiple currency in laravel website

I am developing crypto mining system with laravel and I want to create an e-wallet system.

In this portal, User will get a reward in multiple ways like Hashrate, BTC, Ethermine, USD, etc. I want to allow a user to choose a reward type/currency.

Flow is like when the user gets a reward then it will be added to their wallet and user can request for withdrawing to admin from portal and transaction will be performed accordingly.

Please help to setup database structure and laravel module. I have gone through https://github.com/depsimon/laravel-wallet but there is not currency selection.

I expect that user can have the freedom to withdraw their rewards in digital currencies

Thanks!

via Chebli Mohamed