At 09:16 UTC Sable noticed movement in Satoshi’s wallet. Sable was one of the few people in the world who understood that it had nothing to do with the coins.
The thread was already a thousand posts deep. Most of it was noise. A node desync, an explorer reindex, another false alarm from the bots. It could be Satoshi, back for one last move. But Sable noticed a P2PK output from a handle Sable had seen before. Since the public key had been sitting in the clear on every full node since 2010, you could not spend it without the private key. There were only two ways to do this — you had the private key from twenty years ago, or you had figured out how to compute it, which meant you had broken secp256k1.
By 09:20, Sable had stopped thinking about coins. A break that unwound one dead key on the curve unwound every key on it. And it did not stop at the curve. The same capability could factor RSA — a larger target, a longer run, the same machine. It was the root. The RSA-2048 certificate that signed the boot trust of a few billion machines. This was the credential that told a device an update was permitted before it had even loaded an operating system. At this moment it was mid-rotation: the old root expiring, the new one not yet everywhere, which could open a window across the installed base of everything on earth.
Everyone on the thread thought the excitement was that Bitcoin might be dead. That wasn’t interesting. The rotation was what mattered.
Sable paused and focused — this could be profound.
Whoever had done this had not meant the world to see it. Sable could see it in how it had been done. A state actor showing its hand would have chosen a target that carried a message; it would not have swept one dead wallet and gone silent. A lab proving a point to itself would have run the check offline. This was a live tool pointed at a live target to confirm it worked. Either they had not expected it to work, or they had not meant to run the live test. It was an accident. It had to be.
Sable began pulling at it.
The break needed a specific type of hardware. A specialized, complex, long-running process. Unique software. Quantum algorithms. Sable took the short list of tracked platforms that could do this. Sable crossed it with the list of companies and labs known to have activity in this domain, who were touching the public web at 09:16.
Only one name came up — a small company in Colorado — Basalt Labs. They were a neutral-atom lab with the right kind of hardware. They had spent the last two years consuming an enormous amount of compute for a tiny company.
Sable’s data on them indicated three founders — all MIT.
The CEO was everywhere — stages, podcasts, photos all over the Internet. The man had clearly never turned down a chance to hold a microphone.
The CTO’s bio was thinner. There was a scatter of old photographs of her, an abandoned Facebook account from a decade ago, some ultramarathon racing data. This was a small footprint that came from not caring rather than from tradecraft.
The third founder was nonexistent.
Not thin, not private — absent. A name on an incorporation filing and after that nothing: no photograph, no profile, no online trail of any kind. This was deliberate erasure, and it was excellent. It was so good that it was obvious the third name on the filing was an alias.
Sable launched the deep research agent to find and organize all the online information about Basalt Labs, Marcus Reed, and Samantha Hale.
By 10:30 it was complete, along with extensive online tracking data for all their devices and a summary for the rest of the team. Sable was convinced this was a real breakthrough, but the public exposure was an accident.
If the Americans were aware of this, and they probably were, because they were not that stupid, they likely did not yet understand the real emergency. In their usual clumsy fashion, they would spend their first week noisily aimed in the wrong direction, which suited Sable well.
The last line of the brief was one sentence.
Ready our machine and take all three of them alive.
A machine could be seized or recreated. What they had in their heads could not. The heads had to be kept breathing.
Sable sent it and started looking harder for the invisible founder.