I've seen amounts written in words like 1BTC 1 BTC but not like BTC1 BTC 1 so that's easy.
I'm asking if the best place for symbol's at the beginning or end of amounts. I've seen both styles. If you're writing amounts where's the best place supposed to be BTC1.23456789 or 1.23456789BTC. Which way do you prefer using the Bitcoin symbol.
Bitcoin symbol should not be placed before the amount as it is not a fiat currency. By general convention, the fiat currency symbols are placed before the amount but that's where Bitcoin can be different. As of now, there is no specific rule for placing Bitcoin symbol but if there's a rule to be made, I will definitely go ahead with after the amount.
Bitcoin is not fiat and it should not follow the general rules followed for fiat currencies.