StarkWare tests quantum-resistant Bitcoin transaction on mainnet

This test moves the quantum-resistance conversation from theory to practice, proving a technical path exists without altering Bitcoin's core protocol. The high cost and reliance on miner cooperation signal this is far from a turnkey solution, making scalability and accessibility the immediate hurdles. The significance lies in the precedent: it establishes a baseline for what post-quantum security might look like on Bitcoin, but whether this approach can evolve into a practical, low-friction option is the open question.