State the achievement clearly, then add the caveat yourself—that's the most intriguing part of StarkWare's announcement this time. The team says it has successfully executed the first Bitcoin transaction with quantum-resistant properties, proving that the relevant technology is viable on the Bitcoin network.

But right after that, StarkWare drew its own line around the achievement: this transaction only proves it "can be done"—it doesn't mean Bitcoin is safe now. For the entire network to be truly free from the threat posed by quantum computing, StarkWare points out, Bitcoin still needs a protocol-level upgrade.

In other words, this is a demonstration of a single transaction, not a systemic defense. As for who will propose this upgrade, how it will be pushed forward, and what the timeline might look like, no further details are available at this time.