Let me know how you'd like us to prove out legitimacy and we would love too! We are a fully functioning company manufacturing hundreds of GPU mining rigs per month.
Easiest way is to accept using an escrow agent here on this site. Make some "real" sales and go from there. Crypto is irreversable so you can understand the need for a trusted party in the middle without any reputable vouches for your service
We accept crypto as payment and are willing to use Bitpay to verify the sale.
I dont think you read my recomendation. For crypto payments i personally wouldnt buy anything as "crypto" stores pop up all the time and are scams. When i come here to buy and sell services/product i use the method everyone else uses...escrow from here. Its been done that way for thousands of transactions and if done right keeps everyone safe and keeps sales moving. Everyones happy.