Bitcoin Gold dogecoin free is extended by Lighting Network, which scales to route nearly limitless payments per second. This is an example of a "second layer" solution living atop the main blockchain. Second layers and side chains enable technologies like smart contracts which can run at blazing speeds, secured by the underlying BTG mainchain. Bitcoin Gold can be seen as this fork that has a combination of specific properties that make the original Bitcoin blockchain special as well as an innovative approach when it comes to blockchain development as well as applications. Given the fact that it is a hard fork of the original BTC token, BTG has the intention of fully revolutionizing the mining process through introducing a proof-of-work algorithm, but one that combats the scalability issues found in Bitcoin.