Since i joined bitcointalk forum i find it difficult to make a post relating to bitcoin, bitcoin is like physical money (fiat), and i want to know the difference between fiat and bitcoin, and without fiat existence can bitcoin have a name?, after thinking all this with seriousness i concluded that bitcoin and fiat works like brothers and sisters and no one can leave each other, so i want to know if any other digital currency can function without fiat?.
Not really because we mostly buy Bitcoin with fiat. Since fiat is the currency we use in obtaining goods and services. Bitcoin can't really work without it . Fiat and Bitcoin will work in hand to hand
That's not really correct. You can easily earn Bitcoin and spend it, without ever using an exchange.
Also the way that 'we value Bitcoin in fiat' is by taking numbers of recent Bitcoin sales of exchanges. If there was no fiat to trade Bitcoin with, people would trade Bitcoin against other stuff and that way the value could also be determined.
I agree that right now
"fiat and bitcoin work hand in hand" but not sure it will always stay this way. It's certainly possible (from the Bitcoin side at least) to be independent from fiat - which was the original question.