{"id":60043,"date":"2025-11-24T12:16:32","date_gmt":"2025-11-24T12:16:32","guid":{"rendered":"https:\/\/dogewisperer.com\/?p=60043"},"modified":"2025-11-24T12:16:32","modified_gmt":"2025-11-24T12:16:32","slug":"bitcoin-quantum-break-catastrophe-is-pure-fud-says-gabor-gurbacs","status":"publish","type":"post","link":"https:\/\/dogewisperer.com\/?p=60043","title":{"rendered":"Bitcoin Quantum-Break Catastrophe Is Pure FUD, Says Gabor Gurbacs"},"content":{"rendered":"
\n

A heated debate erupted on X this weekend after Gabor Gurbacs, founder of Pointsville and strategic advisor to Tether, dismissed growing fears about Bitcoin\u2019s vulnerability to quantum computing. In a series of posts, Gurbacs called the notion of a \u201cquantum doomsday<\/a>\u201d for Bitcoin \u201cpure FUD,\u201d arguing that Bitcoin\u2019s cryptographic foundations are already resilient and adaptable enough to survive future advances in quantum technology.<\/p>\n

\u201cThere\u2019s a lot of FUD around Bitcoin\u2019s quantum risk,\u201d Gurbacs wrote<\/a>. \u201cThe fact is that Bitcoin\u2019s security is anchored in hash-based proof-of-work, which remains quantum-resistant. Quantum doesn\u2019t break Bitcoin.\u201d<\/p>\n

Bitcoin Is \u201cQuantum-Resilient By Design\u201d<\/h2>\n

Gurbacs pointed to the distinction between Bitcoin\u2019s hash-based consensus and its signature scheme, arguing that the consensus layer\u2014secured by SHA-256\u2014is already resistant to quantum attacks. Grover\u2019s algorithm only provides a quadratic speed-up, he said, which does not undermine Bitcoin\u2019s proof-of-work. The primary theoretical weakness, he acknowledged, lies in Bitcoin\u2019s ECDSA signatures<\/a>, which could be vulnerable if quantum computers reach the scale required to run Shor\u2019s algorithm<\/a> effectively.<\/p>\n

But according to Gurbacs, even that threat is mitigated by best practices and Bitcoin\u2019s modular design. \u201cThe main quantum target (ECDSA public keys) is already mitigated by non-reuse of addresses and can be upgraded to post-quantum signatures,\u201d he noted, referencing NIST\u2019s newly standardized FIPS-205, which formalizes the Stateless Hash-Based Digital Signature Algorithm (SLH-DSA).<\/p>\n

\u201cBitcoin\u2019s long-term security model was designed precisely for adversarial upgrades,\u201d he added. \u201cThe consensus layer is hash-based and quantum-resilient, and the signature layer is modular, meaning post-quantum schemes like SLH-DSA\/SPHINCS+ can be integrated without disrupting monetary integrity or supply rules.\u201d<\/p>\n

That assertion drew immediate responses from crypto security veterans, including Messari co-founder Dan McArdle and Project Eleven\u2019s Graeme Moore, who both warned that Gurbacs was underestimating the complexity and timeline of a network-wide post-quantum transition.<\/p>\n

McArdle agreed that mining and proof-of-work are not at immediate risk but outlined three structural issues Bitcoin must still face: legacy P2PK outputs with already-exposed public keys, the possibility of mempool sniping (quantum theft during transaction propagation), and the large size of post-quantum signatures, which could force a controversial blocksize increase.<\/p>\n

\u201cGiven all that,\u201d McArdle said, \u201cit\u2019s best to get serious about quantum robustness now. It\u2019s not an issue to kick down the road until the threat is imminent.\u201d<\/p>\n

Gurbacs pushed back, calling those risks \u201creal but remote.\u201d The few P2PK addresses are \u201csmall and scattered,\u201d and the kind of quantum computers required for mempool attacks are \u201cunbelievably fast and stable\u2014which we\u2019re nowhere near.\u201d He added that BTC could absorb larger signature schemes or even a blocksize upgrade \u201cbefore any realistic threat shows up.\u201d<\/p>\n

\u201cI agree we should take quantum hardening seriously,\u201d Gurbacs wrote. \u201cI just don\u2019t buy the idea that we\u2019re close to a break\u2014and scammers tend to abuse the quantum narrative. The bigger risk now is people panicking instead of looking at actual timelines.\u201d<\/p>\n

The Open Questions For Bitcoin Devs<\/h2>\n

Graeme Moore countered that complacency is the greater danger. Citing his firm\u2019s research, he argued that a coordinated post-quantum migration could take six months or more even under ideal conditions and that \u201cwe could have a CRQC in a couple years.\u201d He pressed Gurbacs on whether the Bitcoin community could realistically agree on adopting NIST-approved standards like SLH-DSA or ML-DSA\u2014especially since Satoshi Nakamoto<\/a> intentionally avoided NIST curves for distrust reasons.<\/p>\n

Moore also raised the thorny question of what happens to unmigrated or \u201clost\u201d coins in a quantum transition, including Satoshi\u2019s early holdings. \u201cAre you in favor of freezing Satoshi\u2019s coins?\u201d he asked. \u201cWhy or why not?\u201d
\nGurbacs replied that governance choices should apply equally to all unmigrated keys and rejected any \u201cspecial rules.\u201d He reiterated that the threat is not existential in the near term. \u201cWe\u2019ll see weaker cryptosystems fall first,\u201d he said. \u201cThat buys years of warning for picking schemes, implementing and testing, and allowing gradual opt-in rotation before the \u2018oh shit\u2019 moment.\u201d<\/p>\n

While Moore insisted that \u201cwe\u2019re already at the \u2018oh shit\u2019 moment,\u201d Gurbacs disagreed. \u201cIf a real CRQC existed at the level needed to break secp256k1,\u201d he argued, \u201cthe first signs wouldn\u2019t show up in Bitcoin. They\u2019d show up in TLS, PGP, government PKI, and weaker ECC systems long before. That simply hasn\u2019t happened.\u201d<\/p>\n

For now, Gurbacs\u2019 position is clear: quantum computing represents a long-term coordination challenge, not an imminent collapse. \u201cQuantum panic is misplaced,\u201d he said. \u201cBitcoin\u2019s architecture is adaptable, conservative, and mathematically robust. Quantum doesn\u2019t break Bitcoin.\u201d<\/p>\n

Gurbacs has also received independent approval from OG Adam Back. Via X, the legendary cypherpunk wrote: \u201cBitcoin can just add a new signature type, and make a \u201cquantum ready\u201d taproot leaf alternative spend method, under taproot\/schnorr<\/a>. In that way you can be ready without paying the cost of large signatures until it becomes relevant. NIST standardized SLH-DSA aug 2024 only.\u201d<\/p>\n

He added: \u201cIf cryptographically relevant quantum computers are developed, then my guess is schnorr & ECDSA signature methods would be deprecated (become unspendable). IMO it\u2019s a lot further away than 2030 so people should have time to migrate and be quantum ready long before.\u201d<\/p>\n

At press time, BTC traded at $85,984.<\/p>\n

\"Bitcoin<\/div>\n","protected":false},"excerpt":{"rendered":"

A heated debate erupted on X this weekend after Gabor Gurbacs, founder of Pointsville and strategic advisor to Tether, dismissed growing fears about Bitcoin\u2019s vulnerability to quantum computing. In a series of posts, Gurbacs called the notion of a \u201cquantum doomsday\u201d for Bitcoin \u201cpure FUD,\u201d arguing that Bitcoin\u2019s cryptographic foundations are already resilient and adaptable […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":0,"footnotes":""},"categories":[2],"tags":[3,4,5],"class_list":["post-60043","post","type-post","status-publish","format-standard","hentry","category-news","tag-crypto","tag-doge","tag-news"],"_links":{"self":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts\/60043","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=60043"}],"version-history":[{"count":0,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts\/60043\/revisions"}],"wp:attachment":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=60043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=60043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=60043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}