Which Altcoin is next to Bitcoin and is being accepted worldwide?
For me it is eth. You can convert eth to btc so we can use it. For me ETH and Bitcoin Cash is next to Bitcoin. I also think that it is our job to convert our ETH and Bitcoin Cash or any altcoins that we have before we use it.
Well Ethereum is a really good altcoin to keep. Many investors and project handler are using ethereum as the main token of their project. They using it because of smart contract and fast transaction with a low fee. Unlike the other coin it takes an expensive fee and a slow speed in doing transaction. The price of it was also more stable than Bitcoin.