Ethereum's main public testnet, Ropsten, will undergo a proof-of-stake (PoS) merger in early June, one of the final preparations before the main Ethereum blockchain can switch to proof-of-stake consensus, the current proof-of-work chain with the new stake The test merger of the proof chain is expected to take place on June 8. Anthony Sassano, co-founder of ethereum research tool EthHub, estimated that the merger on the mainnet could happen as early as August, but has yet to provide an of...