Ethereum 2.0Ethereum 2.0 is an upgrade of the current network, which is intended to bring greater scalability, security and sustainability. According to initial estimates, the changeover should take 2-3 years. Ethereum is currently in a transition phase in which it is switching from the Proof-of-Work (PoW) to the Proof-of-Stake (PoS) algorithm. Validators can deposit their stake in a smart contract and are thus authorised to verify transactions in exchange for a reward (staking reward). If a staker does not act in accordance with the rules of the network, their deposit can be withdrawn. At around 9:30 a.m. on 8 June 2021, this smart contract held ether with an equivalent value of around USD 13 billion (see https://etherscan.io/address/0x00000000219ab540356cbb839cbe05303d7705fa) with an estimated annual return on staking of around 6.58% (see https://www.stakingrewards.com/). As the transaction costs are distributed across the total number of tokens deposited in the smart contract, the return depends on the number of deposited tokens. The more tokens deposited, the lower the return. (Publication date 08/06/2021)