By Isaac • July 19, 2026 2:49 pm •
A Bitcoin signature proves control of a key.
But what happens if a future quantum computer can manufacture that same signature?
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Project Eleven says a wallet may have one more way to prove who got there first: its family tree.
The quantum-security firm has funded a post-quantum zero-knowledge proof that traces an address back through the wallet key-derivation path that created it. The prototype generated that proof in 243 milliseconds on an M5 MacBook Air using four CPU cores.
It verified in 40 milliseconds, required no GPU and kept the higher-level private key material secret.
That is a real technical result. It is not a live Bitcoin rescue system.
The code is early and unaudited. Bitcoin
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