No Consensus Changes Needed: Starkware CPO Builds Quantum-Safe Bitcoin Transactions From Existing Rules

A Bitcoin researcher and Starkware executive published a working scheme this week that makes new bitcoin transactions quantum-safe today, using only rules that have existed in the protocol for years. Key Takeaways: Starkware CPO Avihu Levy published QSB on April 9, 2026, enabling quantum-safe bitcoi