[salawat]

The issue is there is no non-custodial option by definition. You are either doing what a financial institution has to do by law (Full compliance system), or you're outsourcing to someone else who does, in which case you haven't negated the non-cooperative custodian risk that you set out to mitigate in the first place.

The only real choice left is to accept a minimalized compliance system that just squeaks by mister to be accepted by the big guys, (which still leaves the risks of the rest of the system eventually locking you out), and places a significant burden on you, the business owner to learn a lot of financial minutiae that has nada to do with your business other than integrating into the financial system), or just stick with a payment processor who already exists (not solving your problem).

Absolutely sucks, but that's what our system has evolved to.