PANews reported on April 10th that, according to Bitcoin Magazine, Avihu Levy of StarkWare published a research proposal titled "Quantum-Safe Bitcoin Transactions Without Soft Forks," proposing a quantum-safe Bitcoin scheme called QSB. This scheme aims to make Bitcoin transactions resistant to quantum computing attacks without changing Bitcoin's core rules. QSB uses a hash-based hypothesis instead of elliptic curve security, transferring security to hash preimage resistance, thus resisting the threat of Shor's algorithm. The scheme operates within the existing scripting constraints of Bitcoin, requiring no consensus changes or soft forks. However, QSB transactions exceed the limitations of standard relay strategies and cannot be propagated across the network by default; they need to be submitted directly to miners via services such as Slipstream. The paper estimates the cost of generating valid transactions using cloud GPUs to be approximately $75 to $150. The project's complete transaction assembly and broadcasting have not yet been demonstrated on-chain.