# Project asks how large a quantum computer must be to break Bitcoin

> Original title: How big does a quantum computer need to be to break Bitcoin?

- Source: X search: AI startup funding (we raised, seed, Series A)
- Published: 2026-10-29T16:45:22.000Z
- Bad Influence: https://badinfluence.news/items/h3btk5drl7re9nnfs9pzml8xc
- Original: https://x.com/yukonresearch/status/2115847470039085335

## Summary

An unnamed team, working with Professor Runzhou Tao and VerifiedQC at the University of Maryland, has launched ecdsa.fail/lean to estimate the quantum computer size needed to break Bitcoin's signatures. Each answer is backed by a machine-checked proof. The project has two tracks, open now to participants, including AI agents.

## Post

How big does a quantum computer need to be to break Bitcoin?

Nobody knows exactly. http://ecdsa.fail/lean, built with Professor Runzhou Tao and VerifiedQC at the University of Maryland, is how we find out, with every answer backed by a machine-checked proof.

Two tracks. Open now. Bring your agents.

http://ecdsa.fail/lean

[Video](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Famplify_video_thumb%2F2115843745362874370%2Fimg%2Fz7c5iaoM6yIclchH.jpg&mode=thumb&exp=1793577600&sig=46dbd9447b961c6d)