I found this project is a scam
Website :
https://dogegold.site/They posted on twitter that they will be listed on Mercatox but all are fake pictures
https://twitter.com/Doge_Gold_Coin/status/1154605953003606016 >> They Fake Deposit DGC on Mercatox. While Mercatox did not add DGC on Mercatox why they can deposit DGC and have DGC icon? >>> SCAM FAKE DEPOSIT
https://twitter.com/Doge_Gold_Coin/status/1152239192061014016 >> They faked email from Mercatox, It's easy to edit and got a scam fake picture
If you and send ETH to their contract address, all your ETH will be lost.