---
title: "Starkware Says Anti-Quantum Bitcoin Transaction Was Mined on Mainnet Without Consensus Changes"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/297401899.md"
description: "Starkware reported that an anti-quantum Bitcoin transaction using Avihu Levy’s QSB scheme was mined on the mainnet without consensus changes. The transaction, processed via MARA Foundation’s Slipstream service, cost $150-$200 in GPU computation. While QSB reduces quantum attack risks through signature trial mining, it requires manual fund movement and cannot protect exposed public keys. Starkware CEO Eli Ben-Sasson continues to advocate for a protocol-level solution via a soft fork."
datetime: "2026-08-29T11:33:49.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/297401899.md)
  - [en](https://longbridge.com/en/news/297401899.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/297401899.md)
generator: "portal-rs"
---

# Starkware Says Anti-Quantum Bitcoin Transaction Was Mined on Mainnet Without Consensus Changes

Blockchain technology company Starkware said a transaction using researcher Avihu Levy’s anti-quantum Bitcoin (QSB) scheme was mined on the Bitcoin mainnet on August 26 without a soft fork, hard fork, or changes to consensus rules. According to Odaily, the transaction used 10,000 satoshis, was processed through MARA Foundation’s Slipstream service, and took several hours of GPU computation at a cost of about $150 to $200. Starkware said QSB uses hash-function-based anti-quantum spending conditions and reduces quantum attack risk through signature trial mining, but users still need to move funds manually and it cannot protect assets whose public keys have already been exposed. Starkware CEO Eli Ben-Sasson still supports introducing a protocol-level solution through a soft fork.

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> **Disclaimer: This article is for reference only and does not constitute any investment advice.**