Bitcoin news - What Are Altcoins, and Why Do They Exist? - How-To Geek How-To GeekWhat Are Altcoins, and Why Do They Exist?How-To GeekThe “proof of work” requirement that requires a ridiculous amount of energy usage could be replaced with a different verification method, making the new altcoin more efficient and saving all the world's energy from being sucked up to mine Bitcoin the ...Price of Bitcoin halves in 'cryptopocalypse' as Ripple, Ethereum and other alt-coins take a batteringMetroCrypto Market Rebound: BTC Back Over $8K, Top 100 Coin ...Cointelegraph (Bitcoin, Cryptocurrency and Blockchain News)all 485 news articles » Tue, 13 Feb 2018 17:30:26 UTC en