A panel of cryptographers convened by Coinbase warns that quantum computers will eventually crack blockchain encryption, necessitating a migration to quantum-resistant security measures. Although a capable quantum machine is still at least two major engineering breakthroughs away, the transition process will be lengthy, emphasizing the need for early preparation. The core challenge lies in replacing current compact digital signatures with post-quantum alternatives, which are larger and more complex. Every major blockchain platform faces this issue, underscoring the urgency of planning and implementing quantum-resistant cryptographic solutions1. The window for preparation is narrowing, and the industry must act promptly to mitigate potential risks. As quantum computing advancements continue, the timeline for cryptographic migration is shortened, making it essential for practitioners to prioritize post-quantum cryptography planning to ensure the long-term security of blockchain-based systems.