News linked to both this project and an event.
: Blockchain technology company Starkware stated that on August 26, a transaction using researcher Avihu Levy's Quantum-Safe Bitcoin (QSB) scheme was mined on the Bitcoin mainnet, without requiring a soft fork, hard fork, or modification of consensus rules.The transaction consumed 10,000 sats and was processed through MARA Foundation's Slipstream service, as the non-standard format typically cannot propagate through Bitcoin's public mempool. The test consumed several hours of GPU computation, costing approximately $150 to $200.QSB employs hash-based quantum-resistant spending conditions and reduces quantum attack risks through signature trial mining, but still requires users to proactively migrate funds and cannot protect assets whose public keys have already been exposed. Starkware CEO Eli Ben-Sasson still supports introducing a protocol-level solution via a soft fork. (Bitcoin.com News)
According to The Block, StarkWare announced it has successfully executed the first post-quantum Bitcoin transaction. Avihu Levy, Head of Applications, used a "signature grinding" approach to repeatedly generate millions of candidate signatures before the transaction entered the Bitcoin mempool, thereby avoiding the exposure of mathematical data related to public keys that could be exploited by future quantum computers to forge signatures. This method incurs significant computational costs, with a single transaction potentially taking several hours. Because the transaction format is unrecognized by standard Bitcoin nodes, it bypassed the public mempool and was submitted directly to miners for inclusion via MARA’s Slipstream service. StarkWare noted that while this technique can serve as a transitional safeguard, Bitcoin will still require protocol-level upgrades or a hard fork to systematically mitigate quantum computing threats.
据 Cointelegraph 报道，比特币政策研究所（BPI）联合 Anchorage Digital、BitGo、Bitwise、Blockstream、Kraken、Ledger、MARA、Trezor 等多家加密机构，发布公开信敦促各大前沿 AI 实验室为比特币及开源软件开发者建立或扩展可信访问计划。 信中指出，Bitcoin Core 等开源维护者目前缺乏对 AI 实验室网络安全程序的访问渠道，被迫依赖能力较弱的开源模型，而比特币网络当前保护着逾 1 万亿美元资产，任何开源基础设施漏洞均可能危及用户毕生积蓄。BPI 同时披露，已收到多份报告显示包括潜在境外势力在内的复杂攻击者正借助先进 AI 能力持续发动攻击。
Bitcoin News posted on X platform, stating that MARA's Slipstream is now open as a permissionless public service, requiring no client software. This service is particularly important for users transferring funds from vulnerable COLDCARD wallets. Multi-signature spending exposes all public keys and spending conditions. If this transaction enters the public mempool, attackers can immediately match these keys against their pre-computed database of weak COLDCARD private keys, and if they control the majority of keys, broadcast a higher-fee double-spend transaction before the original transaction is confirmed. Slipstream submits transactions directly to miners, keeping them out of the public mempool until mined. MARA recommends using conservative fees to avoid transactions getting stuck. Aside from standard Bitcoin network fees, the service is currently free.
According to Cointelegraph, Bitcoin mining company MARA Holdings spent $4.3 million on CEO Fred Thiel’s personal security in 2025, including $430,780 for vehicle armor, as well as residential and personal security expenses. Filings show related spending for 2024 totaled $191,040. In the same year, MARA also spent $3.9 million on CFO Salman Khan’s personal security. The report notes that personal safety costs for companies are rising amid an increase in “wrench attacks” targeting cryptocurrency executives and investors.