Our Mochimo developer moved the frontier on ecdsa.fail on 23 October.
The submission takes 460 Toffoli gates off the best-known circuit at 1,236 logical qubits, landing at 742,306.
ecdsa.fail is the public leaderboard for attacking secp256k1.
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The submission takes 460 Toffoli gates off the best-known circuit at 1,236 logical qubits, landing at 742,306.
ecdsa.fail is the public leaderboard for attacking secp256k1.
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secp256k1 is the curve used for Bitcoin and Ethereum signatures. The board scores submissions on logical qubits multiplied by Toffoli gates. The first sets how large a machine has to be; the second sets how long it has to run.
secp256k1 is the curve used for Bitcoin and Ethereum signatures. The board scores submissions on logical qubits multiplied by Toffoli gates. The first sets how large a machine has to be; the second sets how long it has to run.
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The improvement is 0.062%, which is small and worth calling small. The board records 1,265 frontier advances from 81 solvers. It moves in increments like this one, which is the reason the aggregate is worth watching at all.
The improvement is 0.062%, which is small and worth calling small. The board records 1,265 frontier advances from 81 solvers. It moves in increments like this one, which is the reason the aggregate is worth watching at all.
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One piece of arithmetic the page leaves to you: 742,306 x 1,236 = 917,490,216. The entry listed as the low Toffoli record is 740,798 x 1,240 = 918,589,520. Fewer gates, more qubits, larger product.
One piece of arithmetic the page leaves to you: 742,306 x 1,236 = 917,490,216. The entry listed as the low Toffoli record is 740,798 x 1,240 = 918,589,520. Fewer gates, more qubits, larger product.
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So this is not the low Toffoli record, and not the low qubit record, which sits at 660 qubits. It is a point on the Pareto frontier with a smaller qubit-times-Toffoli product than the record point above it. Multiply them yourself.
So this is not the low Toffoli record, and not the low qubit record, which sits at 660 qubits. It is a point on the Pareto frontier with a smaller qubit-times-Toffoli product than the record point above it. Multiply them yourself.
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We have spent a week telling people to watch one number on this board and to ignore headlines that leave it alone. You cannot ask people to watch a number and then decline to help measure it. The board is now 69.3% ahead of Google’s circuit, from 68.6% on 19 October.
We have spent a week telling people to watch one number on this board and to ignore headlines that leave it alone. You cannot ask people to watch a number and then decline to help measure it. The board is now 69.3% ahead of Google’s circuit, from 68.6% on 19 October.
Oct 22, 2026 · 10:37 PM UTC
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