2020 cryptocurrency fraud scam format methods, how thieves are stealing your coins? Bitcoin Ethereum youtube giveaway scam ads. You can often see this video posted on youtube these days. These videos are shown as advertisements by youtube. In the video, they promises that if you send them 1 coin, you will receive 10 times more coins back. But this is not true, this is a scam. Please do not send money. You will lose your all coins. Do not send ethereum or bircoin or any other coin.