Bitcoin briefly surpassed $71,000 on Tuesday amid positive sentiment around new potential Bitcoin-based institutional products. The London Stock Exchange approved the trading of bitcoin and ether exchange-traded notes, fueling upside momentum. Projects linked to Coinbase Ventures saw average gains of 10%, while the CoinDesk 20 index rose over 4%. Open interest in crypto futures jumped nearly 8%, indicating new money entering the market. Grayscale's Bitcoin trust saw record outflows last week, but some say this doesn't reflect the overall market.