if i build a bank of bitcoin that operating like a traditional fiat money bank when people can save the money and get interest for their saving and also people can get a loan from my bank but the fiat money is change for bitcoin, the question is would you guys trust me to save your bitcoin on my bitcoin bank that i want to build ?
Question is how do you intend to give interest to anyone when the currency itself would deflate over time. We have the concept of interest rates in fiat currency because it is an inflationary currency and we keep the rate of interest above the rate of inflation but in case of a deflationary currency things will get much more complicated. people would return their loans earliest because what they borrowed yesterday is much more valuable today and will become too expensive tomorrow. Please make me understand that how would you give interest rate when you yourself won't be able to earn anything. Let's take you accept deposit of 5BTC and intend to give interest rate @ rate of 5% per annum and you give loan to people at rate of 10% per annum. Now people would start repaying their loans ASAP as both the BTC price will increase and the amount of loan to be repaid would increase. Moreover people investing in your bank would be much higher than those taking loan and itself would implode.