I think some countries have given a straight forward statement about bitcoin some countries diclier it as a legal currency and now working of it to regulate it. while some countries have delear it as illegal currency and they have banned it in their countries. while some countries has yet not given any statement about bitcoin. so those countries who have banned it and consider it as illegal currency then it is illegal to use or hold bitcoin there and those who delea it legal so there it is legal to use or hold bitcoin. I think it is still legal there where the govt has yet not given any statement about bitcoin to hold or use bitcoin.