How do you formally say a bit?

How do you formally express the term "a bit" in a cryptocurrency or financial context, particularly when discussing quantities or amounts of digital currency or assets? Is there a more precise or professional-sounding way to phrase it, or is "a bit" acceptable in most professional settings? Additionally, how would you clarify the meaning of "a bit" when used in this context to ensure that there is no ambiguity or misinterpretation?