Solana developers have unveiled a new quantum-resistant vault, the "Solana Winternitz Vault," designed to protect user funds from potential quantum computer threats. This vault uses a hash-based signature system, generating new keys for each transaction to thwart attacks on public keys. However, it's an optional feature, so users must opt in to secure their assets. While Ethereum also plans to implement quantum-resistant solutions, co-founder Vitalik Buterin believes quantum computers won't pose a significant threat for at least a decade.