Researcher cuts quantum circuit for Bitcoin's elliptic curve to 639 qubits
A researcher posted a point-addition circuit for secp256k1 needing 639 qubits, below the 640-qubit asymptotic bound from Jo & Lee, lowering estimates of the quantum resources needed to attack Bitcoin's signature curve.
What we know
A researcher reports the first graded circuit for secp256k1 point addition under 2.5n, posted at 639 qubits against the 5n/2 = 640 asymptotic bound. It follows a sub-3n circuit published in October. The result is a claim on a preprint-style site and has not been independently verified.
What people are posting
Posts on X this story draws on. They are individual users' views and have not been verified by Global Eye 24.
“Just posted 639 qubits ... below the 5n/2 = 640 in Jo & Lee's asymptotic bound”
View post →By the Global Eye 24 desk, with AI assistance. Updated as the story develops. Spot an error? Write to corrections@globaleye24.com.