Will Bitcoin (#bianacepizza ) be cracked? Since Bitcoin is based on blockchain technology, its security relies on SHA-256 and Elliptic Curve Cryptography (ECDSA). If quantum computers are widely applied, they may use Shor's algorithm to crack elliptic curve encryption, threatening the security of Bitcoin address private keys, leading to asset theft or transaction forgery. However, the impact of quantum computing on the SHA-256 hash function is limited, and simply increasing the length of Bitcoin addresses can serve as a defense. Currently, quantum technology is not yet mature, and the risks in the short term are relatively low, but there is a need to upgrade to post-quantum encryption algorithms (such as lattice-based cryptography) in the long term. The Bitcoin community has begun exploring technological iterations to address future quantum threats.