Setting/general/about. Look all the way to the bottom where it said "modem firmware". That is the baseband.
Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)
Also, hopefully you know this but Verizon iPhone 4'(s) cannot be unlocked.
Sell it, and buy a factory unlocke....wait. Canada! Why didn't you buy a factory unlocked from the beginning???
No I bought it off someone, I couldn't pass on the deal. White 32gb iPhone 4 for 300$, I guess i'll continue using it as an ipod for work. I'm tired of my laggy blackberry :S