Ethereum is a smart contract platform that enables developers to build tokens and decentralized applications (dapps). ETH is the native currency for the Ethereum platform and also works as the transaction fees to miners on the Ethereum network. Ethereum is the pioneer for blockchain based smart contracts. Smart contract is essentially a computer code that runs exactly as programmed without any possibility of downtime, censorship, fraud or third-party interference. It can facilitate the exchange of money, content, property, shares, or anything of value. When running on the blockchain a smart contract becomes like a self-operating computer program that automatically executes when specific conditions are met. Ethereum allows programmers to run complete-turing smart contracts that is capable of any customizations. Rather than giving a set of limited operations, Ethereum allows developers to have complete control over customization of their smart contract, giving developers the power to build unique and innovative applications. Ethereum being the first blockchain based smart contract platform, they have gained much popularity, resulting in new competitors fighting for market share. The competitors includes: Ethereum Classic which is the oldchain of Ethereum, Qtum, EOS, Neo, Icon, Tron and Cardano. Ethereum wallets are fairly simple to set up with multiple popular choices such as myetherwallet, metamask, and Trezor. Read here for more guide on using ethereum wallet: How to Use an Ethereum Wallet
U Network is a revolutionary protocol for publishing and valuing online content that helps online content platforms better align with the interests of their users. It does this by rewarding content creators more for their work, by letting users earn money for predicting popular content, by making it easier to discover high-quality content, and by allowing all users to be part of content moderation and governance decisions. The first online content community powered by U Network will be U Community, a digital asset information community. In 2015, U Network team launches SV Insight, a Silicon Valley tech media company with over 4 million subscribers. In the year 2017, U Network team develops blockchain educational content together with Huobi, attracting over 30,000 paying users. Besides, U Network team launches a smart contract developers boot camp, training over 300 blockchain developers.