Goldcoin GLC: Hard Fork
The whitepaper
"Goldcoin changes different consensus rules than Bitcoin Cash did, but it will fork from Bitcoin in the
same manner - by enforcing new consensus rules as of a predetermined BTC block height. The new rules
will come into effect on June 17th, 2019. At this time, exchanges will be asked to pause trading to allow
them time to upgrade."
What is a hardfork?
The cryptocurrency mainnet operates according to certain rules. To improve network performance or correct errors, changes are periodically introduced into it. A hard fork represents changes that are not compatible with previous versions of software supporting the cryptocurrency network. In order to continue to mine the cryptocurrency, miners need to update the software.
In some cases, as a result of a hard fork, a completely new cryptocurrency may appear, as happened with Bitcoin Cash and EthereumPoW.