{"id":119407,"date":"2026-04-16T10:42:00","date_gmt":"2026-04-16T09:42:00","guid":{"rendered":"https:\/\/investx.fr\/pt\/?p=119407"},"modified":"2026-04-16T12:42:59","modified_gmt":"2026-04-16T11:42:59","slug":"bitcoins-ameacados-computadores-quanticos","status":"publish","type":"post","link":"https:\/\/investx.fr\/pt\/noticias-cripto\/bitcoins-ameacados-computadores-quanticos\/","title":{"rendered":"Charles Hoskinson alerta: 34% dos Bitcoins em risco com computadores qu\u00e2nticos"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"une-ameaca-quantica-massiva-para-a-rede-bitcoin\">Une amea\u00e7a qu\u00e2ntica massiva para a rede Bitcoin?<\/h2>\n\n\n\n<p>Num v\u00eddeo recente dirigido aos maximalistas da <a href=\"https:\/\/investx.fr\/pt\/investir-criptomoedas\/comprar\/bitcoin\/\">Bitcoin<\/a>, Charles Hoskinson destacou uma vulnerabilidade cr\u00edtica. Segundo ele, a 1 de mar\u00e7o de 2026, mais de <strong>34% da oferta total de Bitcoin<\/strong> teve a sua chave p\u00fablica exposta na blockchain. Esta falha resulta principalmente da reutiliza\u00e7\u00e3o de endere\u00e7os ou da utiliza\u00e7\u00e3o de formatos antigos de carteiras (P2PK). Isto representa cerca de <strong>8 milh\u00f5es de BTC<\/strong> \u00e0 merc\u00ea de um ataque qu\u00e2ntico.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">JUST IN: <a href=\"https:\/\/twitter.com\/hashtag\/Cardano?src=hash&amp;ref_src=twsrc%5Etfw\">#Cardano<\/a> <a href=\"https:\/\/twitter.com\/search?q=%24ADA&amp;src=ctag&amp;ref_src=twsrc%5Etfw\">$ADA<\/a> Founder Charles Hoskinson on BIP-361, says &quot;it was a good day for me, because it&#39;s a confirmation of every single thing I&#39;ve been saying for a long time, and this industry finally has to wake up a little bit. 34% of the entire (BTC) supply is vulnerable.&quot; <a href=\"https:\/\/t.co\/l975HB06xs\">pic.twitter.com\/l975HB06xs<\/a><\/p>&mdash; Angry Crypto Show (@angrycryptoshow) <a href=\"https:\/\/twitter.com\/angrycryptoshow\/status\/2044533601866232232?ref_src=twsrc%5Etfw\">April 15, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p>Estas moedas, provenientes de endere\u00e7os legacy (P2PKH ou P2PK) ou de uma reutiliza\u00e7\u00e3o de endere\u00e7os, poderiam ser <strong>roubadas em poucas horas por um computador qu\u00e2ntico<\/strong> suficientemente potente. Hoskinson fala, portanto, de um risco concreto e n\u00e3o hipot\u00e9tico.<\/p>\n\n\n\n<p>E longe de ser um cen\u00e1rio de fic\u00e7\u00e3o cient\u00edfica, Hoskinson estima que computadores qu\u00e2nticos suficientemente potentes <strong>surgir\u00e3o na d\u00e9cada de 2030<\/strong>. Ele at\u00e9 ironizou sobre o assunto, afirmando que esta amea\u00e7a nos atingir\u00e1 em cheio.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"a-ameaca-quantica-o-que-isto-significa-realmente\">A amea\u00e7a qu\u00e2ntica: O que isto significa realmente&nbsp;<\/h2>\n\n\n\n<p>Para explicar esta amea\u00e7a que n\u00e3o para de crescer h\u00e1 v\u00e1rios anos, imaginemos que a sua chave privada de Bitcoin \u00e9 um cadeado ultrarresistente. Classicamente, para o for\u00e7ar a partir da chave p\u00fablica (o que toda a gente v\u00ea quando realiza uma transa\u00e7\u00e3o), seriam necess\u00e1rios milhares de milh\u00f5es de anos de c\u00e1lculos nos melhores supercomputadores. Este \u00e9 o <strong>problema do logaritmo discreto em curva el\u00edptica<\/strong> (ECDLP), a base matem\u00e1tica do ECDSA utilizada pela Bitcoin na curva secp256k1.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/04\/16123904\/image-10-3-1024x559-1.jpg\" alt=\"\" class=\"wp-image-119404\" srcset=\"https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/04\/16123904\/image-10-3-1024x559-1.jpg 1024w, https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/04\/16123904\/image-10-3-1024x559-1-300x164.jpg 300w, https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/04\/16123904\/image-10-3-1024x559-1-768x419.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Fonte: Medium<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Formalmente: a chave p\u00fablica <em>Q<\/em> \u00e9 calculada como <em>Q = d \u00d7 G<\/em>, onde <em>d<\/em> \u00e9 a sua chave privada secreta (um n\u00famero de 256 bits) e <em>G<\/em> um ponto fixo na curva el\u00edptica. Encontrar <em>d<\/em> a partir de <em>Q<\/em> e <em>G<\/em> \u00e9 exponencialmente dif\u00edcil na computa\u00e7\u00e3o cl\u00e1ssica (complexidade de ~2\u00b9\u00b2\u2078 opera\u00e7\u00f5es).<\/p>\n\n\n\n<p>Mas em 1994, o matem\u00e1tico <strong>Peter Shor<\/strong> inventou um algoritmo qu\u00e2ntico que resolve este problema em <strong>tempo polinomial<\/strong>: O((log N)\u00b3) onde N \u00e9 o tamanho do n\u00famero. Num computador qu\u00e2ntico tolerante a falhas (com milhares de qubits l\u00f3gicos est\u00e1veis), bastam algumas horas para recuperar <em>d<\/em>. Uma vez conhecida a chave privada, o atacante pode assinar qualquer transa\u00e7\u00e3o e esvaziar a carteira.<\/p>\n\n\n\n<p>Al\u00e9m disso, o <strong>algoritmo de Grover<\/strong> (outra ferramenta qu\u00e2ntica) tamb\u00e9m acelera as pesquisas de hash SHA-256. No final, os cerca de 34% de BTC cuja chave p\u00fablica j\u00e1 foi revelada (durante uma transa\u00e7\u00e3o de gasto ou nos formatos antigos) tornam-se um alvo f\u00e1cil para os computadores qu\u00e2nticos.<\/p>\n\n\n\n<p>Os <strong>1,7 milh\u00f5es de BTC em P2PK puros<\/strong> (incluindo uma parte da reserva de Satoshi) s\u00e3o ainda mais cr\u00edticos: a sua chave p\u00fablica est\u00e1 literalmente <strong>gravada na blockchain desde 2009-2010.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"o-plano-de-resgate-bip-361-esta-condenado-ao-fracasso\">O plano de resgate (BIP-361) est\u00e1 condenado ao fracasso?<\/h2>\n\n\n\n<p>Perante esta urg\u00eancia, circula atualmente uma proposta de melhoria da Bitcoin, o BIP-361. O seu objetivo: congelar os fundos vulner\u00e1veis e for\u00e7ar uma migra\u00e7\u00e3o para endere\u00e7os p\u00f3s-qu\u00e2nticos. No entanto, Hoskinson criticou fortemente esta iniciativa. Segundo ele, esta atualiza\u00e7\u00e3o exigiria um <strong>Hard fork<\/strong>, uma modifica\u00e7\u00e3o radical do c\u00f3digo que a comunidade Bitcoin sempre recusou por princ\u00edpio.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/04\/16123906\/image-10-4-1024x559-1.jpg\" alt=\"\" class=\"wp-image-119405\" srcset=\"https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/04\/16123906\/image-10-4-1024x559-1.jpg 1024w, https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/04\/16123906\/image-10-4-1024x559-1-300x164.jpg 300w, https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/04\/16123906\/image-10-4-1024x559-1-768x419.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Fonte: Medium<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Ainda mais preocupante, o sistema de recupera\u00e7\u00e3o por prova de conhecimento nulo (Zero-Knowledge Proof) proposto apenas funciona para as carteiras baseadas na norma BIP-39, introduzida em 2013. Resultado: cerca de 1,7 milh\u00f5es de Bitcoins, incluindo o famoso tesouro de <strong>Satoshi Nakamoto<\/strong>, seriam perdidos para sempre. Uma tal perda de liquidez poderia, paradoxalmente, criar um choque de oferta, mas o impacto psicol\u00f3gico deixaria uma marca profunda.<\/p>\n\n\n\n<p>Hoskinson sublinha que os programadores compreendem os desafios, mas que as solu\u00e7\u00f5es atuais s\u00e3o inadequadas. Se a rede n\u00e3o conseguir chegar a um acordo sobre uma transi\u00e7\u00e3o fluida, a confian\u00e7a dos utilizadores poder\u00e1 desmoronar-se, bloqueando qualquer esperan\u00e7a de um novo grande bull run para l\u00e1 de 2030.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"a-bitcoin-sobrevivera-a-esta-revolucao-tecnologica\">A Bitcoin sobreviver\u00e1 a esta revolu\u00e7\u00e3o tecnol\u00f3gica?<\/h2>\n\n\n\n<p>O pr\u00f3prio Peter Shor (o inventor do algoritmo) e a maioria dos cript\u00f3grafos de alto n\u00edvel (aqueles que trabalham na Google, Microsoft ou no NIST) s\u00e3o un\u00e2nimes: <strong>a amea\u00e7a matem\u00e1tica \u00e9 real e inevit\u00e1vel<\/strong>.&nbsp;<\/p>\n\n\n\n<p>E as provas est\u00e3o a\u00ed h\u00e1 30 anos. O \u00fanico debate centra-se na engenharia. De facto, s\u00e3o necess\u00e1rios <strong>milh\u00f5es de qubits f\u00edsicos com corre\u00e7\u00e3o de erros<\/strong> para executar o algoritmo de Shor numa curva de 256 bits. As estimativas da DARPA preveem um computador &#8220;\u00fatil&#8221; por volta de 2033-2035.&nbsp;<\/p>\n\n\n\n<p>O que \u00e9 um problema dif\u00edcil para os computadores cl\u00e1ssicos \u00e9 &#8220;f\u00e1cil&#8221; para um computador qu\u00e2ntico. Mesmo que a Bitcoin n\u00e3o esteja condenada (pode migrar para assinaturas p\u00f3s-qu\u00e2nticas, como as baseadas em reticulados ou hashes), a descentraliza\u00e7\u00e3o <strong>torna o consenso extremamente lento.<\/strong>&nbsp;<\/p>\n\n\n\n<p><strong>Fontes:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/coinpedia.org\/news\/charles-hoskinson-says-34-of-bitcoin-could-be-stolen-by-quantum-computers-in-2030s\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Coinpedia<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/x.com\/angrycryptoshow\/status\/2044533601866232232\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Angry Crypto<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/medium.com\/@ashutoshpanda.india\/quantum-computing-breaking-the-foundation-of-digital-security-9cd4e150a1a6\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Medium<\/a><\/li>\n<\/ul>\n\n\n\n<p><strong>Artigos Relacionados:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/investx.fr\/pt\/noticias-cripto\/arthur-hayes-bitcoin-ia-guerra-irao\/\">Arthur Hayes aposta no HYPE: Bitcoin preso entre a IA e a guerra no Ir\u00e3o<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/investx.fr\/pt\/noticias-cripto\/dogecoin-preco-10-centimos-analise\/\">Dogecoin: Dom\u00ednio sobre Ethereum e Bitcoin e a busca pelos 10 c\u00eantimos<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/investx.fr\/pt\/noticias-cripto\/tom-lee-razoes-explosao-mercado\/\">Tom Lee aponta 3 raz\u00f5es para a explos\u00e3o do mercado acionista: An\u00e1lise detalhada<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Charles Hoskinson revela: 34% dos Bitcoins podem ser roubados por computadores qu\u00e2nticos at\u00e9 2030. Saiba o impacto no mercado crypto.<\/p>\n","protected":false},"author":32,"featured_media":119406,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_focuskw":"bitcoins computadores qu\u00e2nticos","_yoast_wpseo_title":"Bitcoin em risco: A amea\u00e7a qu\u00e2ntica segundo Hoskinson","_yoast_wpseo_metadesc":"Charles Hoskinson revela: 34% dos Bitcoins podem ser roubados por computadores qu\u00e2nticos at\u00e9 2030. Saiba o impacto no mercado crypto.","footnotes":"","faq_titre":"","questions_frequentes":"","custom_permalink":"noticias-cripto\/bitcoins-ameacados-computadores-quanticos"},"categories":[42,6],"tags":[],"class_list":["post-119407","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitcoin","category-noticias-cripto"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bitcoin em risco: A amea\u00e7a qu\u00e2ntica segundo Hoskinson<\/title>\n<meta name=\"description\" content=\"Charles Hoskinson revela: 34% dos Bitcoins podem ser roubados por computadores qu\u00e2nticos at\u00e9 2030. 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