{"id":7876,"date":"2021-09-15T23:17:00","date_gmt":"2021-09-15T20:17:00","guid":{"rendered":"https:\/\/alfacash.blog\/?p=7876"},"modified":"2024-02-19T21:51:19","modified_gmt":"2024-02-19T18:51:19","slug":"public-private-keys-why-important-keep-your-coins","status":"publish","type":"post","link":"https:\/\/alfacash.blog\/pt\/2021\/09\/15\/public-private-keys-why-important-keep-your-coins\/","title":{"rendered":"Chaves p\u00fablicas e privadas: por que \u00e9 importante guardar suas moedas?"},"content":{"rendered":"

O empres\u00e1rio de tecnologia e defensor do Bitcoin Andreas Antonopoulos tem uma frase famosa: \u201cSuas chaves, seu bitcoin. Nem suas chaves, nem seu bitcoin \u201d.<\/strong> Ele est\u00e1 aludindo \u00e0 import\u00e2ncia de manter as chaves privadas de suas carteiras de criptomoedas sob seu controle total.  <\/p>\n\n\n\n

Agora, voc\u00ea provavelmente est\u00e1 se perguntando o que s\u00e3o \u201cchaves\u201d. Se for esse o seu caso, voc\u00ea deve conhecer as informa\u00e7\u00f5es abaixo.<\/p>\n\n\n\n

Chaves p\u00fablicas e privadas<\/strong><\/h2>\n\n\n\n

Primeiro, devemos ter em mente que as criptomoedas n\u00e3o s\u00e3o f\u00edsicas. Eles representam um valor digital relacionado a uma transa\u00e7\u00e3o n\u00e3o gasta (o que conhecemos como \u201cmoeda\u201d). Todas as transa\u00e7\u00f5es s\u00e3o registradas permanentemente em um livro-raz\u00e3o distribu\u00eddo ou blockchain<\/a>. \u00c9 atrav\u00e9s do consenso de todos os n\u00f3s (os computadores que formam o raz\u00e3o) que as transa\u00e7\u00f5es s\u00e3o aprovadas e, para isso, o sistema verifica primeiro as chaves p\u00fablicas e privadas de cada carteira.<\/strong><\/p>\n\n\n\n

Portanto, as transa\u00e7\u00f5es de criptomoeda s\u00e3o poss\u00edveis usando um \u00fanico par de chaves criptogr\u00e1ficas ou chaves p\u00fablico-privadas. Como Yan Pritzker explica em livro dele<\/a> \u201cInventando Bitcoin,\u201d \u00e9 virtualmente imposs\u00edvel para duas pessoas gerar o mesmo par de chaves p\u00fablica-privada porque \u00e9 um n\u00famero muito longo que est\u00e1 matematicamente ligado.<\/p>\n\n\n\n

\"public-private-keys-criptomoeda\"<\/figure><\/div>\n\n\n\n

O par de chave p\u00fablica-privada<\/a> \u00e9 assim\u00e9trico, pois voc\u00ea s\u00f3 pode criptografar com uma chave (com a p\u00fablica) e descriptografar com a outra (com a privada). Embora a chave p\u00fablica seja necess\u00e1ria para receber fundos (para que possa ser compartilhada com outras pessoas), a chave privada \u00e9 essencial para provar a propriedade da carteira e gastar os fundos.<\/p>\n\n\n\n

Resumindo: a chave p\u00fablica seria como um endere\u00e7o de e-mail que voc\u00ea pode fornecer para receber dinheiro<\/strong>, enquanto a chave privada seria a senha para acessar aquela conta de e-mail e verificar a mensagem (o dinheiro, neste caso).<\/p>\n\n\n\n

Uma vers\u00e3o abreviada da chave p\u00fablica \u00e9 um endere\u00e7o de criptografia comum que voc\u00ea pode fornecer a qualquer pessoa. Se parece com este de O Projeto \u00c1gua<\/a>: 3H2hQCAk9Skm8robYQHBX7YB3EqxDU74NX. Claro, este \u00e9 apenas um exemplo com um endere\u00e7o BTC. Em outros blockchains, eles parecem um pouco diferentes. Em Ethereum<\/a>, por exemplo, eles s\u00e3o assim: 0xf99768862bc8e61ef88849cfdcc8f493aebfc5ff. No Monero<\/a>, como este: 453VWT5GEkXGc2J9asRpXpRkjoCGKCJr96rndm2VMe5yECiAcUB3h8pFxZ8YGbmbGmVefwWHPXmLR69Vw1sVNWz5TsFqYbK (mais, sabemos para doar. WikiLeaks<\/a>, a prop\u00f3sito).<\/p>\n\n\n\n

Frase semente: a chave para o tesouro<\/strong><\/h2>\n\n\n\n

Agora voc\u00ea sabe como se parece com uma chave p\u00fablica, mas onde pode encontrar sua chave privada? Bem, em geral, as carteiras de criptomoedas pessoais armazenam e gerenciam automaticamente as chaves p\u00fablicas e privadas dos endere\u00e7os que geram para seus usu\u00e1rios. Para facilitar para todos, as carteiras fornecem uma frase de recupera\u00e7\u00e3o ou frase semente, associada \u00e0s chaves privadas. Essa frase \u00e9 geralmente formada por 12 a 24 palavras aleat\u00f3rias que devem ser mantidas em segredo.<\/strong><\/p>\n\n\n\n

\"Public-private-keys-secret\"
Imagem de Peter Wiberg do Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n

Com a semente em suas m\u00e3os, voc\u00ea \u00e9 o \u00fanico que pode acessar os fundos. Literalmente, ningu\u00e9m mais, nem mesmo o suporte da carteira ou a cripto-troca. Ningu\u00e9m pode congelar, manipular ou censurar qualquer uma de suas transa\u00e7\u00f5es. Se houver um problema com o seu dispositivo atual e voc\u00ea perdeu a carteira digital, a \u00fanica coisa que voc\u00ea precisa fazer \u00e9 baixar qualquer carteira<\/a> novamente, em qualquer dispositivo, e digite sua frase-semente para recuperar seus fundos.<\/p>\n\n\n\n

Se voc\u00ea n\u00e3o tiver essa frase-semente, isso significa que a bolsa ou carteira gerencia seu dinheiro em seu nome. Portanto, eles podem, de fato, congelar, manipular, censurar ou at\u00e9 mesmo perder seus fundos. <\/strong>\u00c9 por isso que a frase de Antonopoulos: nem suas chaves, nem suas moedas. E voc\u00ea tamb\u00e9m deve saber disso: se perder suas chaves, tamb\u00e9m perder\u00e1 suas moedas. N\u00e3o h\u00e1 op\u00e7\u00f5es \u201cEsqueci minha senha\u201d aqui.<\/p>\n\n\n\n

Por tudo isso, \u00e9 muito importante que os usu\u00e1rios protejam e armazenem adequadamente sua frase de recupera\u00e7\u00e3o, pois \u00e9 a \u00fanica chave para acessar seus fundos. Perd\u00ea-lo pode significar perder o acesso ao site relacionado criptomoedas<\/a> para sempre.<\/p>\n\n\n\n

Protegendo suas chaves privadas<\/strong><\/h2>\n\n\n\n


\u00c9 importante lembrar que qualquer pessoa (voc\u00ea ou outras pessoas) com a frase semente pode acessar os fundos. Portanto, a semente deve ser memorizada e \/ ou escrita em um peda\u00e7o de papel<\/strong> e armazenado em um local seguro (e privado). N\u00e3o \u00e9 recomendado fazer nenhum tipo de backup digital disso, como um documento do Word, uma captura de tela, um e-mail ou algo digital; uma vez que pode cair no m\u00e3os de hackers<\/a>.<\/p>\n\n\n\n

\"Greatest-DeFi-hacker-Poly\"<\/figure><\/div>\n\n\n\n

A cust\u00f3dia pessoal de criptomoedas d\u00e1 soberania financeira a seus propriet\u00e1rios, pois se traduz em controle total sobre seu pr\u00f3prio dinheiro. No entanto, tamb\u00e9m requer maior responsabilidade individual. Se a semente cair em m\u00e3os erradas, o usu\u00e1rio pode perder todo o seu dinheiro.<\/p>\n\n\n\n

No entanto, esse controle total pode oferecer algumas vantagens valiosas. <\/strong>Os recursos estar\u00e3o dispon\u00edveis sempre que seu propriet\u00e1rio necessitar, e seus movimentos n\u00e3o ser\u00e3o registrados em um banco de dados centralizado, nem ser\u00e3o associados \u00e0 sua identidade. Al\u00e9m disso, o usu\u00e1rio pode proteger seus fundos da maneira que quiser, enviar grandes quantias com tarifas baix\u00edssimas para todo o mundo, e nunca ter\u00e1 que enfrentar obst\u00e1culos burocr\u00e1ticos.<\/p>\n\n\n\n

Trocas de cust\u00f3dia e n\u00e3o-cust\u00f3dia<\/strong><\/h2>\n\n\n\n

Uma das op\u00e7\u00f5es mais populares para comprando Bitcoin<\/a> e outras criptomoedas \u00e9 usando plataformas de c\u00e2mbio online. Atualmente, h\u00e1 uma grande variedade de servi\u00e7os para compra e venda de criptomoedas. Estes podem ser classificados em duas categorias: trocas com e sem cust\u00f3dia.<\/p>\n\n\n\n

As trocas com cust\u00f3dia s\u00e3o os servi\u00e7os que oferecem contas em vez de chaves. Para utiliz\u00e1-los, o usu\u00e1rio deve abrir uma nova conta com eles e cumprir seus requisitos (fornecer dados pessoais e documentos, por exemplo). Eles podem funcionar como uma carteira, j\u00e1 que os clientes podem ali verificar seu saldo e fazer transa\u00e7\u00f5es. Mas eles nunca oferecer\u00e3o chaves privadas pessoais. Em vez disso, o usu\u00e1rio acessa apenas com um e-mail \/ apelido e senha.<\/p>\n\n\n\n

\"Europe-ban-crypto-wallets\"<\/figure><\/div>\n\n\n\n

Ao usar intermedi\u00e1rios como esses, os usu\u00e1rios abrem m\u00e3o do controle total sobre seus fundos. Da mesma forma, eles tamb\u00e9m podem enfrentar congelamento de fundos, confiscos e at\u00e9 mesmo ser V\u00edtimas de fraude<\/a>, no caso de servi\u00e7os de cust\u00f3dia duvidosa.<\/p>\n\n\n\n

Por sua vez, plataformas de c\u00e2mbio n\u00e3o custodiais (como Alfacash<\/a>) t\u00eam os mesmos benef\u00edcios <\/strong>como os oferecidos por servi\u00e7os de cust\u00f3dia, com menor exposi\u00e7\u00e3o a ataques cibern\u00e9ticos ou fraudes. A privacidade tamb\u00e9m \u00e9 maior para os usu\u00e1rios, enquanto eles mant\u00eam controle total sobre seus fundos. Isso porque essas plataformas n\u00e3o oferecem carteiras online, mas pedem aos usu\u00e1rios endere\u00e7os sob seu controle durante a negocia\u00e7\u00e3o.<\/p>\n\n\n\n

Se voc\u00ea ainda n\u00e3o tem uma carteira pessoal com uma frase-semente adequada, \u00e9 hora de verificar como escolher sua primeira cripto-carteira<\/a>. A sua independ\u00eancia financeira depende disso!<\/p>\n\n\n\n


Imagem em destaque por StockSnap \/ Pixabay<\/em><\/p>\n\n\n\n

\n\n\n\n

Quer trocar Bitcoin e outros tokens? Voc\u00ea pode fazer isso sem cust\u00f3dia <\/em>em Alfacash<\/a><\/em>! Estamos falando sobre isso e muitas outras coisas em nossas redes sociais.<\/em><\/p>\n\n\n\n

Twitter<\/a> * Telegrama<\/a> * Facebook<\/a> * Instagram<\/a> * YouTube<\/a> * Vkontakte<\/a><\/p>","protected":false},"excerpt":{"rendered":"

\u201cNem suas chaves, nem suas moedas\u201d. As chaves privadas s\u00e3o essenciais para alcan\u00e7ar a independ\u00eancia financeira dentro do mundo criptogr\u00e1fico. Descubra-os aqui!<\/p>","protected":false},"author":5,"featured_media":7904,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[48],"tags":[156,43,61,59,405,300,60],"class_list":{"0":"post-7876","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-learn","8":"tag-alfacash","9":"tag-bitcoin","10":"tag-cryptocurrencies","11":"tag-exchanges","12":"tag-private-keys","13":"tag-security","14":"tag-wallets"},"featured_image_src":"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/09\/03-scaled.jpg","author_info":{"display_name":"Isabel P\u00e9rez","author_link":"https:\/\/alfacash.blog\/pt\/author\/isabel\/"},"yoast_head":"\nPublic and private keys: why is important to keep your coins?<\/title>\n<meta name=\"description\" content=\"\u201cNot your keys, not your coins\u201d. 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