[a16z Crypto: Quantum attack threats are exaggerated, the security focus of public chains like BTC and ETH remains on protocol and governance] According to a report by Jinse Finance, a16z Crypto's official Twitter account published a long article titled 'Quantum computing and blockchains: Matching urgency to actual threats,' which pointed out that the timeline for the emergence of quantum computers capable of breaking cryptocurrency (CRQC) is often exaggerated, with the likelihood of their appearance before 2030 being extremely low. For example, digital signatures and zkSNARKs are not easily affected by 'Harvest Now, Decrypt Later (HNDL)' attacks. Hastily implementing blockchain migration could instead bring a series of risks such as performance costs, immature implementation, and code vulnerabilities. For most public chains (such as Bitcoin and Ethereum), the more pressing challenges currently are not quantum computing but rather protocol upgrade coordination, governance complexity, and security vulnerabilities at the implementation level. It is recommended to plan ahead rationally within the assessed time window rather than rushing to switch to quantum-resistant solutions. a16z Crypto emphasized that in the coming years, security issues such as code vulnerabilities, side-channel attacks, and fault injection attacks are more urgent than quantum risks. Developers should prioritize investments in code audits, fuzz testing, and formal verification.