Binance announced they will burn a number of BTokens that are not being used.

This is standard procedure to maintain the necessary supply of wrapped assets on BNB Chain. BTokens that will be burnt later today:

800k Binance-pegged ETH, 280k Binance-pegged KMD, 550k Binance-pegged BAL, 300k Binance-pegged EGLD, 140k Binance-pegged FIRO, 170M Binance-pegged TRX, 73.5k Binance-pegged BCH