PANews reported on March 12 that ARK Invest and Unchained jointly released a white paper titled "Bitcoin and Quantum Computing," stating that current quantum computing is not yet sufficient to threaten Bitcoin's security. The quantum risks will gradually emerge through a series of observable technological milestones rather than a sudden "Q-day" collapse. The report points out that approximately 65.4% of the Bitcoin supply (about 13 million coins) is in non-quantum-vulnerable addresses, about 8.6% (about 1.7 million coins) is in early P2PK addresses considered lost and quantum-vulnerable, and another about 5.2 million coins are in reusable or P2TR addresses, totaling approximately 35% of the supply with a potential quantum attack surface. The authors predict that a truly cryptographically relevant quantum computer capable of breaking the secp256k1 elliptic curve would require at least thousands of logical qubits and tens to billions of quantum gates, and that the global internet and financial systems will face a greater shock before quantum capabilities approach a level that threatens Bitcoin. The report also emphasizes that post-quantum cryptography (PQC) standards have been widely deployed on the Internet, and Bitcoin will need to introduce a quantum-safe address format through soft forks and other means in the future, and will need to make governance decisions on whether to "freeze" the remaining quantum-fragile lost coins.