It is possible to create a custom SPL-token and disabling the trade and send capabilities for the user (not for the SPL-token authority)? The idea is to create a token that can only be purchased and spent within our specific application and at the same time maintain all the benefits of an SPL-token. Is it possible to do this, or do you know any alternative that I can use?
Thanks in advance :)
If you want to manage the tokens entirely, you can go with the managed-token approach, which keeps the token frozen at all times, and must pass through your program, which thaws, does something (burn / transfer / etc), and re-freezes the account.
You can find the source code for a reference implementation at https://github.com/solana-labs/solana-program-library/tree/master/managed-token/program
I think it's only a way to build a new program, which will hold the SPL-token owned by the PDA derived from the program. You can add the specific instructions by your own business logic, like deposit/withdraw/send etc. For UX, furthermore, you'll be developing application-specific wallet to display the balance and drive the user's actions.
