Here is a copy-paste BTC up/down poll caption for Binance Square:

Caption 1:
What will BTC do in the next 5 minutes? 👀
Vote fast — Up 🚀 or Down 📉
#BTC #Bitcoin

Poll options:$BTC

Up 🚀 $BTC

Down 📉$BTC

If you want it more catchy, use this:

Viral style:
5 minutes. 1 move. Where will BTC go? 👀
Up or Down? Vote now!
#BTC #Bitcoin #CryptoCommunity