The Shanghai update, also referred to at times as Shapella, enabled investors to queue up to withdraw Ether tokens they had pledged to help operate the blockchain network in return for rewards, a process called staking. So-called liquid-staking providers such as Lido, Rocket Pool and Frax Ether, which have all seen major inflows as a result, also let holders use Ether-based derivatives in a slew of DeFi trading, lending and borrowing apps.