One of the key issues in the crypto space is called the blockchain trilemma. It is a problem where it is not possible to create a blockchain that has three key properties. Speed, security, and decentralization. This affects virtually all blockchains. Bitcoin and Ethereum are decentralized, secure networks, but they are painfully slow. And that is what scaling channels aspire to solve. One of them being the xDai network, which aims to create essentially a second layer for Ethereum. Today we will look at how xDai works, why it looks promising, and what must happen for the xDai network to be one of the successful projects.