Who will finally be the Blockchain Leader in the world; USA or China?
Do you mean to use the blockchain to their technology? Then for me it is the USA because US pentagon already successfully adapted the blockchain technology to their defense system in which they believed that the blockchain is very strong against cyber attack and hacking. I don't hear any from China that they adapt the blockchain to their technolgy except purely marketing only.
I think USA will be win the blockchain competition between China because USA has already used blockchain to there system. But interms of higher demand China will be win because there country are have higher population that using cryptocurrency. Also USA is one of the country that have an advance technology, so they will easy for them to adopt crypto.