StarkWare enables first quantum-safe Bitcoin transaction on mainnet

StarkWare executed the first reported quantum-safe Bitcoin mainnet transaction, using a post-quantum (hash-based) signature scheme as a proof-of-concept to secure funds against future quantum attacks. The experiment shows quantum-resistant signatures can already be deployed on Bitcoin today without protocol changes by leveraging existing scripting and off-chain tooling. Practical trade-offs remain (larger keys/one-time-use patterns and integration complexity), but the technical barrier to migration is demonstrably low. The key implication is that wallets, custodians, and exchanges should begin planning and testing post-quantum key-management strategies even though large-scale quantum threats are not yet imminent.