I agree, but now the whole cryptocurrency is a feature for a narrow circle of geeks, so with its mass introduction, I think there will be the introduction of its derivatives
Thank you for your opinion 
I would not say so. You probably saw in Twitter Taxi drivers investing in crypto. Probably some of them are here)
Thanks for the proposal @BorisSV46! I’ve tagged it as incomplete for now. Could you add some implementation details as explained in the validity requirements?
Hello. Thanks, all done.