Old-style EVM contracts will continue to work and will be fully two-way interoperable with new-style RISC-V contracts.
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Vitalik Buterin floats swapping Ethereum's EVM for RISC-V to boost scalability
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Vitalik Buterin assures that existing EVM-based smart contracts will remain fully functional and interoperable with new RISC-V-based contracts, preserving backward compatibility during Ethereum’s proposed transition.
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