BTQ just rolled out its quantum-resistant Bitcoin testnet—a major move in the race against quantum computing threats. The protocol swaps out ECDSA for ML-DSA, fundamentally rethinking how Bitcoin addresses stay secure as quantum tech evolves. This isn't just theoretical tinkering; it's a real experiment testing whether the Bitcoin ecosystem can adapt to post-quantum cryptography without breaking backward compatibility. The testnet launch marks a critical checkpoint: can next-gen signature schemes coexist with legacy infrastructure? If successful, this could reshape how the entire blockchain industry approaches long-term security architecture. Worth watching as quantum threats shift from "future problem" to "present-day engineering challenge."