Bitcoin Gold (BTG) is a hard fork of Bitcoin that occurred on October 24, 2017 on block 419406. Bitcoin Gold changed proof-of-work algorithm [set of computer instructions] from SHA256 to Equihash rendering specialized (focused on doing one thing very well) mining equipment obsolete [no longer useful/no longer used] in an attempt to democratise [(make something available to, and controlled by, all people)] the Bitcoin mining process. BTG is extended by Lighting Network, which scales to route nearly limitless payments per second. Bitcoin Gold allows you to mine Bitcoin Gold with GPU. BTG implements a new PoW algorithm [set of computer instructions], Equihash, that makes mining decentralized (without having one central area of command) again with ASIC resistant algorithm. ASICs tend to monopolize mining to a few big players, but GPU mining means anyone can mine again restoring decentralization and independence.