Some cryptocurrencies share a blockchain, whilst other cryptocurrencies work by themselves independent blockchains. Ethereum was made in 2015 by Vitalik Buterin, a Russian-Canadian programmer. The platform is based around the basic principle of decentralization, which means that it's not managed by any single entity. Bitcoin was produced in 2009 https://dominickewlap.designertoblog.com/61186852/little-known-facts-about-copyright