Pokemon: Beyond.

I was in your exact position last year when launching my marketplace. What worked for me was finding a provider that offers exactly what you're describing plug-and-play wallet solutions that integrate via simple API with minimal coding. They handle all the security, multiple currency support, and compliance in the background. I used plug n play crypto wallets from Paybis and it was surprisingly straightforward. The integration took a couple of days, not months, and my users can now store, send, and receive various cryptos seamlessly. They also provide 24/7 support which is great when you're not a crypto expert yourself.