{"id":18003,"date":"2023-05-22T11:16:04","date_gmt":"2023-05-22T08:16:04","guid":{"rendered":"https:\/\/t4t-com-php8.wp-dev.int.theitops.net\/?p=18003"},"modified":"2023-11-06T11:52:02","modified_gmt":"2023-11-06T09:52:02","slug":"digital-currencies-what-are-they-and-how-do-they-work","status":"publish","type":"post","link":"https:\/\/www.t4trade-cn.com\/pt\/digital-currencies-what-are-they-and-how-do-they-work\/","title":{"rendered":"Moedas digitais \u2013 o que s\u00e3o e como funcionam?"},"content":{"rendered":"<p class=\"translation-block\">Neste cen\u00e1rio de r\u00e1pida evolu\u00e7\u00e3o financeira e tecnol\u00f3gica, as moedas digitais t\u00eam ganho uma grande popularidade, sobretudo em regi\u00f5es onde as pessoas t\u00eam pouco ou nenhum acesso aos sistemas financeiros tradicionais. Neste artigo iremos clarificar o que s\u00e3o as moedas digitais, como funcionam e a tecnologia que t\u00eam subjacente.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-understanding-digital-currencies\"><strong>Compreender as moedas digitais<\/strong><\/h2>\n\n\n\n<p>Tamb\u00e9m conhecidas como criptomoedas, as moedas digitais s\u00e3o um tipo de moeda dispon\u00edvel de forma eletr\u00f3nica ou digital. Formam um ecossistema financeiro descentralizado e vieram mudar a forma como as pessoas negoceiam e armazenam valor. Geralmente, este sistema \u00e9 considerado mais seguro e transparente do que o centralizado, i.e., os sistemas financeiros tradicionais. As moedas digitais operam na blockchain e as opera\u00e7\u00f5es s\u00e3o garantidas atrav\u00e9s da tecnologia de criptografia. A primeira moeda a ser criada foi a Bitcoin, em 2009, moeda essa que continua a manter a sua popularidade at\u00e9 aos dias de hoje. Desde essa altura, foram desenvolvidos milhares de outras criptomoedas, com um impacto significativo na economia global, redefinindo o futuro financeiro.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-more-on-blockchain-technology\"><strong>Tecnologia de blockchain<\/strong><\/h2>\n\n\n\n<p class=\"translation-block\">A tecnologia blockchain est\u00e1 no cerne das moedas digitais. \u00c9 um registo distribu\u00eddo que grava todas as transa\u00e7\u00f5es numa rede de computadores (nodes) que comunicam entre si para validar e confirmar as transa\u00e7\u00f5es. Cada transa\u00e7\u00e3o, chamada bloco, \u00e9 adicionada a uma cadeia de opera\u00e7\u00f5es anteriores, compondo um registo imut\u00e1vel (n\u00e3o pode ser alterado nem apagado). A sua natureza descentralizada elimina a necessidade de intermedi\u00e1rios, como bancos ou organismos governamentais centralizados. Esta tecnologia tamb\u00e9m procura garantir a transpar\u00eancia e seguran\u00e7a.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"850\" height=\"360\" src=\"\/wp-content\/uploads\/2023\/05\/digital-currencies-technology.gif\" alt=\"A digital coin representing the world of digital currencies.\" class=\"wp-image-18007\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-cryptographic-security\"><strong>Seguran\u00e7a criptogr\u00e1fica<\/strong><\/h2>\n\n\n\n<p>As criptomoedas baseiam-se em algoritmos criptogr\u00e1ficos complexos para proteger as transa\u00e7\u00f5es e para controlar a cria\u00e7\u00e3o de novas unidades A criptografia garante que as transa\u00e7\u00f5es s\u00e3o inviol\u00e1veis e que as moedas digitais n\u00e3o podem ser falsificadas. Tamb\u00e9m permite que os utilizadores tenham total controlo dos seus fundos, o que \u00e9 poss\u00edvel atrav\u00e9s de chaves criptogr\u00e1ficas p\u00fablicas e privadas. As chaves tamb\u00e9m s\u00e3o utilizadas para garantir e proteger informa\u00e7\u00e3o sens\u00edvel, permitindo os processos de encripta\u00e7\u00e3o e desencripta\u00e7\u00e3o. Uma chave criptogr\u00e1fica \u00e9 um valor \u00fanico ou uma sequ\u00eancia de bits que servem como input a um algoritmo de encripta\u00e7\u00e3o, o que permite que os dados sejam codificados e depois descodificados.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-popular-digital-currencies\"><strong>Moedas digitais populares<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Bitcoin<\/strong><\/h3>\n\n\n\n<p>A Bitcoin \u00e9 a criptomoeda pioneira que veio revolucionar a forma como o dinheiro \u00e9 transacionado. Desenvolvida em 2009, a bitcoin opera com base no princ\u00edpio da descentraliza\u00e7\u00e3o, transpar\u00eancia e transa\u00e7\u00f5es ponto a ponto (peer-to-peer). No entanto, a Bitcoin tem uma oferta limitada. O limite de 21 milh\u00f5es de moedas torna esta moeda digital menos vulner\u00e1vel \u00e0 infla\u00e7\u00e3o associada \u00e0s moedas tradicionais. As transa\u00e7\u00f5es de Bitcoin s\u00e3o registadas na blockchain, que \u00e9 mantida por uma rede de computadores, chamados mineradores. Os mineradores validam e agrupam as transa\u00e7\u00f5es em blocos que s\u00e3o adicionados \u00e0 blockchain.<\/p>\n\n\n\n<p>A minera\u00e7\u00e3o de Bitcoin exige super-computadores para resolver puzzles matem\u00e1ticos complexos, que validam as transa\u00e7\u00f5es e garantem a seguran\u00e7a da rede. Os mineradores competem, entre si, para os resolver e o primeiro a encontrar uma solu\u00e7\u00e3o pode adicionar um novo bloco \u00e0 blockchain. Existem diferentes tipos de minera\u00e7\u00e3o de criptomoedas, incluindo minera\u00e7\u00e3o ASIC, minera\u00e7\u00e3o GPU, minera\u00e7\u00e3o CPU, grupos de minera\u00e7\u00e3o, minera\u00e7\u00e3o a solo e minera\u00e7\u00e3o em nuvem.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"850\" height=\"360\" src=\"\/wp-content\/uploads\/2023\/05\/etherium-cryptocurrencies.png\" alt=\"A digital coin, a key element in the realm of digital currencies.\" class=\"wp-image-18008\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ethereum<\/strong><\/h3>\n\n\n\n<p>Lan\u00e7ada ap\u00f3s a Bitcoin, em 2015, a Ethereum tamb\u00e9m conquistou popularidade, n\u00e3o s\u00f3 como moeda digital, mas tamb\u00e9m como plataforma, utilizada pelos programadores na constru\u00e7\u00e3o de dApps (aplica\u00e7\u00f5es descentralizadas) utilizando a tecnologia blockchain. A ETH (Ether) \u00e9 a moeda da Ethereum. \u00c9 utilizada para pagar transa\u00e7\u00f5es na blockchain Ethereum. Para al\u00e9m disso, a Ethereum tamb\u00e9m trouxe a ideia de contratos inteligentes (smart contracts). Que s\u00e3o uma forma de contratos autoexecut\u00e1veis que correm na blockchain da Ethereum. Desenvolvidos utilizando c\u00f3digos e dados, podem ser programados para serem executados quando se cumprem determinadas condi\u00e7\u00f5es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Cardano e Polkadot<\/strong><\/h3>\n\n\n\n<p>O desenvolvimento da Cardano e da Polkadot centrou-se na resolu\u00e7\u00e3o de alguns dos desafios apresentados pela Bitcoin e pela Ethereum, sobretudo a escalabilidade (a capacidade de lidar com um n\u00famero mais elevado de transa\u00e7\u00f5es) e a interoperabilidade (a capacidade de as diferentes criptomoedas comunicarem e operarem entre si).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ripple<\/strong><\/h3>\n\n\n\n<p>A Ripple foca-se em facilitar transfer\u00eancias internacionais de dinheiro, com rapidez e baixo custo. O que se consegue atrav\u00e9s da tecnologia blockchain e APIs modernas. As institui\u00e7\u00f5es financeiras que fazem parte da RippleNet podem processar transa\u00e7\u00f5es mundialmente, por fra\u00e7\u00f5es de centavos, instant\u00e2nea e rapidamente. A criptomoeda da Ripple chama-se XRP, que corre num XRP ledger, uma blockchain desenvolvida por Jed McCaleb, Arthur Britto e David Schwartz.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"850\" height=\"360\" src=\"\/wp-content\/uploads\/2023\/05\/litecoin-crypto.png\" alt=\"A digital currency coin, emblematic of the digital financial landscape\" class=\"wp-image-18009\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Litecoin<\/strong><\/h3>\n\n\n\n<p>A Litecoin \u00e9 uma criptomoeda que foi lan\u00e7ada com 150 moedas pr\u00e9-mineradas. A base do seu desenvolvimento foi conseguir uma maior rapidez nos tempos de confirma\u00e7\u00e3o das transa\u00e7\u00f5es relativamente \u00e0 Bitcoin. A Litecoin tem um limite m\u00e1ximo de oferta de 84 milh\u00f5es de moedas. Acredita-se que a oferta de Litecoin ir\u00e1 diminuir, ao longo do tempo, de forma a preservar o valor desta moeda digital. A blockchain desta criptomoeda demora dois minutos e meio a gerar um novo bloco.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\"><strong>Perguntas Mais Frequentes<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. O que significa a descentraliza\u00e7\u00e3o em criptomoedas?<\/strong><\/h3>\n\n\n\n<p>A transfer\u00eancia do controlo ou da tomada de decis\u00f5es de um organismo ou sistema centralizado, e.g., bancos ou governos, para uma rede distribu\u00edda.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Porque \u00e9 que a transpar\u00eancia \u00e9 crucial?<\/strong><\/h3>\n\n\n\n<p>A transpar\u00eancia garante que todas as transa\u00e7\u00f5es s\u00e3o vis\u00edveis por todos os membros da rede e que a validade de todas as transa\u00e7\u00f5es pode ser verificada por qualquer um deles.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Porque \u00e9 que a blockchain \u00e9 considerada \u201ca salvo\u201d de acessos n\u00e3o autorizados ou de falsifica\u00e7\u00e3o?<\/strong><\/h3>\n\n\n\n<p>Isto deve-se, em larga medida, \u00e0 aplica\u00e7\u00e3o de 3 princ\u00edpios fundamentais, nomeadamente descentraliza\u00e7\u00e3o, criptografia e consenso.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. O que significa imutabilidade?<\/strong><\/h3>\n\n\n\n<p>A imutabilidade significa que quando uma transa\u00e7\u00e3o \u00e9 registada na blockchain, j\u00e1 n\u00e3o pode ser alterada ou apagada.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5. O que s\u00e3o servi\u00e7os financeiros descentralizados<\/strong><\/h3>\n\n\n\n<p class=\"translation-block\">Servi\u00e7os financeiros descentralizados (DeFi), \u00e9 uma tecnologia financeira constru\u00edda na blockchain que retira partes externas (terceiros) e institui\u00e7\u00f5es centralizadas das transa\u00e7\u00f5es financeiras. As opera\u00e7\u00f5es s\u00e3o tratadas por aplica\u00e7\u00f5es designadas dApps.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>6. O que s\u00e3o dApps?<\/strong><\/h3>\n\n\n\n<p>As dApps s\u00e3o aplica\u00e7\u00f5es descentralizadas desenvolvidas pela Ethereum. S\u00e3o utilizadas para diversas atividades, incluindo transa\u00e7\u00f5es financeiras, redes sociais e at\u00e9 mesmo jogos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><strong>Conclus\u00e3o<\/strong><\/h2>\n\n\n\n<p>Em conclus\u00e3o, as moedas digitais transformaram a forma como percecionamos e nos relacionamos com o dinheiro. A Bitcoin, juntamente com outras criptomoedas, preparou o caminho para um sistema financeiro descentralizado, que opera fora do controlo das institui\u00e7\u00f5es tradicionais.<\/p>\n\n\n\n<p>No entanto, embora as moedas digitais ofere\u00e7am oportunidades muito interessantes tamb\u00e9m enfrentam desafios importantes. A volatilidade do pre\u00e7o continua a ser uma preocupa\u00e7\u00e3o o que, dificulta, em muito, a sua ado\u00e7\u00e3o e aceita\u00e7\u00e3o generalizada. Os enquadramentos regulat\u00f3rios continuam a evoluir e os governos, de todo o mundo, continuam a debater-se com a forma de abordar e regular esta tecnologia, em r\u00e1pida evolu\u00e7\u00e3o. Atingir um equil\u00edbrio entre a inova\u00e7\u00e3o e a prote\u00e7\u00e3o dos consumidores \u00e9 uma miss\u00e3o essencial que enfrentam os decisores pol\u00edticos.<\/p>\n\n\n\n<p>Em termos futuros, \u00e9 essencial que as pessoas, as empresas e os governos se mantenham informados e instru\u00eddos sobre as moedas digitais. Compreender a tecnologia, os poss\u00edveis riscos e as suas vantagens ir\u00e1 permitir navegar nesta \u00e1rea com maior confian\u00e7a e tomar decis\u00f5es informadas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-choose-t4trade\"><strong>Raz\u00f5es para escolher o T4Trade<\/strong><\/h2>\n\n\n\n<p class=\"translation-block\">Os traders mundiais usam o T4Trade para ter acesso a + de 300 instrumentos financeiros, em 6 classes de ativos, condi\u00e7\u00f5es de trading flex\u00edveis, r\u00e1pida execu\u00e7\u00e3o de negocia\u00e7\u00f5es e seguran\u00e7a dos fundos. O T4Trade tamb\u00e9m tem spreads competitivos, alavancagem flex\u00edvel at\u00e9 1:1000, para al\u00e9m de dep\u00f3sitos e levantamentos f\u00e1ceis e r\u00e1pidos. A nossa equipa din\u00e2mica e multilingue de apoio ao cliente, dispon\u00edvel 24\/5, assegura o apoio aos traders globais, ao longo da sua jornada de trading, independentemente do seu n\u00edvel de conhecimentos. Para al\u00e9m disso, a plataforma MT4 do T4Trade disponibiliza, aos traders, ferramentas e funcionalidades de negocia\u00e7\u00e3o importantes e necess\u00e1rias para tomar as melhores decis\u00f5es de trading.<\/p>\n\n\n\n<p class=\"translation-block\">AVISO LEGAL: A informa\u00e7\u00e3o disposta n\u00e3o deve ser interpretada como consultoria financeira ou recomenda\u00e7\u00e3o de investimento, sendo apresentada apenas para fins de comunica\u00e7\u00e3o e marketing.<\/p>","protected":false},"excerpt":{"rendered":"<p>In what is a rapidly evolving financial and technological landscape, digital currencies have quickly gained popularity, particularly in&#8230;<\/p>","protected":false},"author":12,"featured_media":18006,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[16],"tags":[],"class_list":["post-18003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Digital currencies \u2013 what are they and how do they work?<\/title>\n<meta name=\"description\" content=\"This article takes a deep dive into what digital currencies are, how they work, and the underlying technology behind them.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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