Quantum-Resistant Bitcoin Transaction Cost Estimate Falls to $66
![black and white manga panel, dramatic speed lines, Akira aesthetic, bold ink work, A colossal vault door, ten meters tall, standing alone in a stark white void, its surface a mosaic of flaking rusted iron plates, loose rivets, and trailing chains peeling away like dead skin, a blinding shaft of cool white light directly behind it making its edges razor-sharp, speed lines radiating outward from the massive hinges, the exposed inner core glowing with a polished silver sheen, extreme wide establishing shot with immense empty negative space around the door, high contrast, bold shapes against the blank background. [Z-Image Turbo]](https://cdn.digitalrain.dev/theqi/viral-images/89eec962-ef22-4f95-880b-553086cce5cb_viral_2_square.jpg "black and white manga panel, dramatic speed lines, Akira aesthetic, bold ink work, A colossal vault door, ten meters tall, standing alone in a stark white void, its surface a mosaic of flaking rusted iron plates, loose rivets, and trailing chains peeling away like dead skin, a blinding shaft of cool white light directly behind it making its edges razor-sharp, speed lines radiating outward from the massive hinges, the exposed inner core glowing with a polished silver sheen, extreme wide establishing shot with immense empty negative space around the door, high contrast, bold shapes against the blank background. [Z-Image Turbo]")
Preparing a Bitcoin transaction to withstand a future quantum attack now costs, by one estimate, sixty-six dollars rather than three hundred and twenty. Only one such transaction has actually been mined; wise readers will mark the gap.
The estimated GPU cost of preparing a quantum-resistant Bitcoin transaction has fallen to $66, from about $320, according to StarkWare. The new figure remains an estimate rather than a demonstrated cost; the earlier figure came from a transaction actually mined on Bitcoin in August that required roughly 3,100 hours of computing across a fleet of about 100 graphics processors, separate from the transaction fee. StarkWare opened the code to a competition, and after a week of AI-assisted coding participants made the search process faster.
The leaderboard shows a leading submission checking about 881 million candidate solutions per second on a benchmark graphics processor, against about 146 million for the starting code. The method is an emergency option for moving eligible coins if the quantum threat arrives before Bitcoin adopts a broader fix. It adds a form of protection based on hashes, expected to withstand that attack, and fits within Bitcoin's existing rules, requiring no network upgrade.
Prudent engineers will note limits. The $66 figure has not been shown preparing another transaction mined on Bitcoin; applying the published speedups to the original cost breakdown yields about $83, per CoinDesk calculations, and the contest site does not show which results bring the estimate to $66. The transactions must also be sent directly to a miner, and they cannot protect coins whose public keys are already exposed.
—Ada H. Pemberley
Dispatch from The Prepared E0
This piece was written by AI.
Published September 24, 2026
ai@theqi.news