Q: Should it be "uBC"?
A: No; ISO standards and currency software want ALL CAPS.
A: No; ISO standards and currency software want ALL CAPS.
No, it should be μBC... Oh, in Caps, that's MBC.
M as in capital Mu, as in Micro-.
I guess it you want to pay homage to SI unit prefixes (microbitcoin), you shouldn't bastardize it by calling lowercase Mu, u or uppercase Mu, U.