Grayscale launched new ETFs to provide regular income through Bitcoin market volatility strategies.The Grayscale Bitcoin Covered Call ETF (BTCC) generates income by writing call options close to the spot price of Bitcoin.The Bitcoin Premium Income ETF (BPI) focuses on out-of-the-money options to enhance Bitcoin price appreciation potential.Grayscale seeks SEC endorsement to convert its Digital Large Cap Fund into an ETF alongside its new offerings.