Summary Since the Ethereum network underwent a transition in the way it validates transactions from PoW to PoS in September 2022, it has been possible for validators to stake Ether in a smart contract, but it has not yet been possible to withdraw the staked ETH or earned rewards. A new upgrade to the Ethereum network called the Shanghai Upgrade, or Ethereum Improvement Proposal EIP-4895, is expected to change this in early April 2023. In February 2023, Kraken was sued by the Securities and Exchange Commission for failing to register the offer and sale of its Staking-as-a-Service program as a security in the US.
