[Vitalik Proposes Major Reforms to Ethereum State Tree and Virtual Machine] On March 1, Vitalik Buterin proposed two major reforms to Ethereum's state tree and virtual machine on X. For the state tree, he suggested replacing the existing hexary Keccak Merkle Patricia Tree with a simpler binary tree through EIP-7864 and switching to Blake3 or Poseidon hash functions to improve efficiency. For the virtual machine, he proposed replacing the EVM with the RISC-V architecture and outlined a three-step plan to achieve backward compatibility. This proposal sparked debate, with the Arbitrum development team advocating for WebAssembly (WASM) as the contract delivery format. Vitalik stated that Ethereum will undergo multiple deep technical upgrades in the future, with the state tree reform already in the implementation phase, while the virtual machine replacement remains in the roadmap stage.