With many new cryptocurrencies sprouting in the net, is it possible that bitcoin can be overtaken as a top digital currency in the future? Is ethereum or other well known cryptocurrencies can be a threat to bitcoin dominance?
For right now bitcoin is number one there are no other coins that can be beat bitcoin especially volume of transaction and price of the coins, we can check on here
https://coinmarketcap.com. but there are no people who know what will happen in the future and everything can be happening include there are altcoins that can replace bitcoin.