In January, the leading NFT marketplace OpenSea earned more than $5 billion in total trading volume across Ethereum and Polygon sales, shattering the previous record set in August 2021. According to public blockchain statistics collected by Dune Analytics, OpenSea had more over $4.95 billion in Ethereum trade volume in January, as well as more than $79 million on Polygon, an Ethereum sidechain scaling solution. Both are single-month highs for their respective platforms.