Dogmcoin is a split from Dogecoin block height 4250000 This will be a fork of the Dogecoin blockchain, 1:1, no-premining, no-ico (it is like a full airdrop)
If your DOGE coins are on the exchange, please withdraw money to your own wallet before the block height is 4250000, the wallet where you can master the private key. Your private keys are precious.,Keep them safe.