How to store BTC wallets users?

Application for sending/receiving Bitcoin.
After registration user is required to create a Bitcoin wallet (or the user can import).
After, the user will be manage via the WEB interface (send/receive transaction).
Has launched bitcoin node RPC.
How is it possible to create wallets for your users, or import them to create transactions?
+ you want to upload the privateKey of the user, upon request.
March 19th 20 at 08:29
1 answer
March 19th 20 at 08:31
Solution and can implement a full wallet on the client, even without storing private keys on the server.

or implement everything on the server and on the client, stupid interface

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