Chocolate wont actually melt at 70 but even storage at tbis temp I don't think this is a good idea as even if the chocolate is not melting, if it contains real cacao butter, the fat will slowly migrate and cause fat bloom.There are compound coatings available with hard fats that hold up at warmer temps.
"Hi Everyone,
Been a long time member but I have not been in in a few years, the fact is that I had to close down my small chocolate business.. but now is..."