On July 16, 2020 the third hardfork crypt currency GRIN on block 786240 is planned. In addition to some changes in the mechanism of the network, the new 4 version will change the mining algorithm from the current Cuckaroom29 to Cuckarooz29. For other POW algorithms GRIN cryptovoltau – Cuckatoo31 and Cuckatoo32 will not change in the current hardfork. To switch to the new version of the software GRIN cryptovalyut can already download version 4.0 wallet on the official site Grin.mw. However, the miners will have to wait a little longer, as the popular miners Bminer, Gminer, Lolminer have not yet announced support for the new Cuckarooz29 algorithm.