What Crypto Holders and Builders Should Do Now
No quantum computer can break blockchain signatures today. The published migration deadlines still bind. Here is what to do without waiting for anyone.
What Bitcoin’s Post-Quantum Migration Actually Requires
A new output type, a signature algorithm choice, a fee-market renegotiation, and a multi-year UTXO sunset. The engineering pieces of Bitcoin's PQC migration, and…
The Helium-3 Problem in Quantum Computing, Explained
Helium-3 has no substitute for millikelvin cooling, and most quantum computers never touch it. A working guide to the physics, the supply chain, and…
Will Magnetic Cooling Replace the Dilution Refrigerator?
Magnetic cooling reaches the same millikelvin temperatures as a dilution refrigerator and needs no helium-3. Cooling power at that temperature, not base temperature, decides…
The Quantum Software Stack Is a Real-Time Systems Problem
There is no quantum operating system yet. Reading the stack by deadline rather than by layer shows why, and shows where the engineering work…
The Three Budgets Behind Every Quantum Control System
Quantum control systems are usually described by their parts. Engineers get further by describing them by their budgets: timing, noise, and wiring.
How to Read a Logical Qubit Claim
Vendors report logical qubit counts that are not comparable to each other. The mechanism underneath the number, and the five properties that make two…
NIST Security Strength Categories 1 to 5, Explained
NIST's five post-quantum security categories are floors, not bit counts. Here is what each one anchors to, how quantum cost models shape them, and…
How Hybrid Cryptography Works, Byte by Byte
Hybrid key exchange and dual signatures, explained from the combiner outward: what goes into the KDF, what the extra kilobytes cost, and how to…
Attacking Quantum Systems: The Gap Between the Proof and the Box
Every successful attack on a quantum system so far has left the physics intact and gone after the equipment. Here is the pattern, and…