Riot Platforms moved 500 Bitcoin valued at about $38.95 million to NYDIG, according to Lookonchain, a blockchain analytics service. The tracker said the transaction took place roughly six hours before the report and described it as part of the company’s recent selling activity. Transfers by publicly listed Bitcoin mining companies to firms such as NYDIG, a digital asset financial services provider, are often watched closely because they can indicate treasury management or potential market sales.