Marathon Digital Holdings, Inc. announced that crypto and blockchain researcher Sam Doctor has joined the Company’s advisory board. Sam Doctor is a finance professional with more than 18 years of research experience. He currently serves as the chief strategy officer at BitOoda, a leading digital asset fintech firm, where he leads research and advisory services. Prior to BitOoda, Doctor was the head of data science and quant research at Fundstrat Global Advisors, a managing partner at Seedling Advisories, and a senior equity analyst at JPMorgan Chase in New York and Asia.