I can clearly see that there are other cryptocurrencies that are beginning to dethrone bitcoin, showing off there quick and secured transactions, though bitcoin continues to be the king. What does bitcoin need to improve state your opinions.
many crypto currencies are scam, so I guess they can only promise but can not prove it. I always believe in bitcoin because bitcoin is a crypto currency tested for its authenticity. bitcoin will always be the highest crypto currency and no one can beat it.