{"id":122233,"date":"2026-07-29T02:04:14","date_gmt":"2026-07-29T02:04:14","guid":{"rendered":"https:\/\/www.europesays.com\/ai\/122233\/"},"modified":"2026-07-29T02:04:14","modified_gmt":"2026-07-29T02:04:14","slug":"anthropic-finds-new-cracks-in-the-tech-meant-to-guard-bitcoin-from-q-day","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ai\/122233\/","title":{"rendered":"Anthropic finds new cracks in the tech meant to guard Bitcoin from ‘Q-Day’"},"content":{"rendered":"\n

Anthropic said on July 28<\/a> that its AI model, Claude, discovered new ways to attack cryptographic algorithms. <\/p>\n

It did the work faster than human experts, and one of its targets was a scheme built to survive the arrival of quantum computers. <\/p>\n

To be clear, no blockchain tech was broken, and no wallet is at risk today. But the research pokes directly at a question Bitcoiners have been asking since the quantum threats: what happens to Bitcoin when computers powerful enough to break its security finally exist? <\/p>\n

Related: BlackRock, Coinbase and MicroStrategy prepare for scary ‘Q-Day’<\/a> <\/p>\n

Anthropic’s research explained <\/p>\n

In simple terms, Anthropic used Claude to hunt for weaknesses in cryptography, and it found some. <\/p>\n

Its biggest result weakened a signature scheme called HAWK \u2014 one of the leading candidates to become a new, “quantum-proof” standard. Claude cut HAWK’s security strength roughly in half in about 60 hours of work, after the scheme had already survived two years of review by human cryptographers. <\/p>\n

HAWK isn’t used by any live system, and none of the findings break the encryption protecting today’s internet or blockchains. <\/p>\n

“In just one year, language models have gone from being unable to perform cryptanalysis of even the most basic ciphers to being capable of finding flaws in cryptographic designs that have escaped discovery despite years of human expert review.” wrote Anthropic, in its research post <\/p>\n

Should Bitcoiners be worried? <\/p>\n

When you send Bitcoin<\/a>, your private key signs the transaction to prove the coins are yours. That system \u2014 an algorithm called ECDSA \u2014 is the lock on every wallet. <\/p>\n

The long-term worry is that a powerful enough quantum computer could one day break ECDSA and pull private keys from public information, letting an attacker steal coins. <\/p>\n

Analysts estimate roughly 6.7 million BTC \u2014 around $600 billion \u2014 sit in wallets that would be exposed to such a machine. That machine doesn’t exist yet, but the threat is taken seriously enough that Bitcoin developers have already drafted a plan (BIP-361<\/a>) to move coins onto new, quantum-resistant signatures, and NIST finalized its first quantum-proof standards in 2024. <\/p>\n

Attackers stole roughly $972 million from crypto platforms in the first half of 2026 across a record 207 hacks, according to blockchain intelligence firm TRM Labs<\/a> \u2014 and about 76% came from attacks on infrastructure like private keys and signing systems, not everyday code bugs. The math securing crypto, today’s and whatever replaces it, is already the industry’s most valuable target. <\/p>\n","protected":false},"excerpt":{"rendered":"Anthropic said on July 28 that its AI model, Claude, discovered new ways to attack cryptographic algorithms. It…\n","protected":false},"author":2,"featured_media":122234,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[53,8263,182,61718,4656,61719],"class_list":["post-122233","post","type-post","status-publish","format-standard","has-post-thumbnail","category-anthropic","tag-anthropic","tag-bitcoin","tag-claude","tag-cryptographic-algorithms","tag-quantum-computers","tag-signature-scheme"],"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/posts\/122233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/comments?post=122233"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/posts\/122233\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/media\/122234"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/media?parent=122233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/categories?post=122233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/tags?post=122233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}