It's bitcoin, no doubt, because there are policies in place to restrict the entire cryptocurrency market.
Bitcoin is recognized by most countries.

But he will not give you the profit that can give altcoins. Look at the same QuarkChain, people were able to make good money on it. I think Fantom will also be able to please those who bought it.
this year that will be the winner I think is still Bitcoin. with the development of Bitcoin from year to year that continues to increase the ability to make the development of Bitcoin is very reliable and make the value so high compared to other coins. so it's great with Bitcoin being the winner and mastering the market.