币界网报道：Ben Sigman, a former Google engineer and current CTO of blockchain startup PQShield, has integrated post-quantum cryptographic algorithms into a Bitcoin wallet to enhance security against potential quantum computing threats. The experimental wallet, called PQW, uses the CRYSTALS-Kyber algorithm for public key encryption and CRYSTALS-Dilithium for digital signatures, both selected by the U.S. National Institute of Standards and Technology (NIST) as quantum-resistant standards. While current quantum computers cannot yet break Bitcoin's existing encryption, experts warn that the cryptocurrency's SHA-256 and ECDSA algorithms could become vulnerable within 10-15 years as quantum technology advances. Sigman's project demonstrates how quantum-safe cryptography could be implemented in blockchain systems, though adoption faces challenges including larger key sizes that increase transaction data by 30-50 times. Major blockchain projects like Ethereum and Cardano are also exploring quantum-resistant solutions, with Ethereum founder Vitalik Buterin previously proposing a hybrid approach combining classical and post-quantum cryptography. The development comes as governments and tech firms worldwide accelerate quantum computing research, with China recently claiming a breakthrough in quantum supremacy. PQShield, which specializes in post-quantum cryptography, has raised $37 million from investors including Addition and Oxford Science Enterprises to commercialize its quantum-resistant security solutions for blockchain, IoT, and other applications.