$ETH co-founder Vitalik Buterin introduced the walkaway test as a measure of Ethereum’s long-term sustainability: the network must remain secure and fully functional even if its core developers stop working on it. The ultimate goal is for the protocol to “ossify,” operating like a reliable tool that does not depend on constant upgrades. A key focus is readiness for quantum computing threats, including the transition to post-quantum cryptography, to ensure Ethereum remains secure and cryptographically relevant in the future.
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