Riot-blockchain.online has been flagged as a scam. They promise huge profits if you invest, but once you do, they disappear with your money. The site was just registered, only 38 days old when reported. No customer service number is listed on the site. You won’t find any reviews about the company on major consumer review platforms. Their social media accounts have zero followers.
An investment scam tricks people into investing money with promises of high returns, only for the scammers to disappear with the funds.