Bitcoin Gold, referred to as BTG on MT4, is the second fork from Bitcoin after Bitcoin Cash.
The Bitcoin Gold fork was created on 24th of October 2017, at a block height of 491,407. BTG retains Bitcoin’s transaction history, meaning if you owned Bitcoins before the fork, you now own the equal amount of Bitcoin Gold.
This Cryptocurrency aims to introduce an alternative mining algorithm that is less susceptible to ASIC-based optimisation, therefore allowing users to earn more with their computer cycles.
Read more at What is Bitcoin Gold.