BitMEX co-founder Arthur Hayes believes Ethereum (ETH) will reach $5,000 before Solana (SOL) hits $300.Ethereum's upcoming Dencun upgrade and increasing institutional interest in Ethereum ETFs are driving its growth.Ethereum is currently trading around $2,052, with a potential to drop towards $1,818 or rise towards $2,267.Solana (SOL) is gaining traction and analysts predict it could reach $144 by the end of the month.