Castle Island Ventures partner Nic Carter has issued a stark warning regarding Bitcoin’s cryptographic security in the face of advancing quantum computing capabilities. In a detailed analysis, Carter projects that cryptographically relevant quantum computers (CRQCs) could emerge around 2035, potentially compromising Bitcoin’s existing security framework sooner than previously anticipated.
The assessment highlights how quantum computing advancements could theoretically break Bitcoin’s current elliptic curve cryptography, which protects private keys and secures transactions on the blockchain. Carter emphasizes that while Bitcoin’s Proof-of-Work consensus mechanism would remain intact, the threat specifically targets individual wallets and transaction security.
Industry experts note that the cryptocurrency sector must accelerate development of quantum-resistant cryptographic solutions. Several blockchain projects have already begun implementing post-quantum cryptography, though widespread adoption across major networks like Bitcoin remains in early stages.
The timeline presented suggests a critical window for protocol upgrades and community consensus. Carter’s analysis serves as a call to action for developers and researchers to prioritize quantum-resistant algorithms before CRQCs become operational. The cryptocurrency industry faces a race against time to implement necessary security enhancements while maintaining network stability and decentralization principles.

