Earlier quoted context omitted.
I'm not very far on my project at all but I assume that a public ledger could tell me that somebody transferred money to the wallet associated with my application. I wouldn't need to "send bills" because I wouldn't know who my users are. Except that when they login with their crypto-id my application will do work for them, because they have crypto-paid for it. I wouldn't need to charge credit-cards since they transfe…
Yes, but how is this different from charging a credit-card or publishing an IBAN? The webshop exposes some way of receiving value tokens, be that USD, EUR or BTC, and has some way to tell which user transferred how many tokens. So technically there is no difference. The difference is, I can be pretty sure that EUR won't lose 20% of their value overnight.
If you want to accept bitcoin, you run a piece of software and write a few lines of code.