{"id":209,"date":"2023-05-28T05:33:28","date_gmt":"2023-05-28T08:33:28","guid":{"rendered":"https:\/\/theblockbrew.com\/?p=209"},"modified":"2023-05-28T05:54:26","modified_gmt":"2023-05-28T08:54:26","slug":"o-que-sao-os-smart-contracts","status":"publish","type":"post","link":"https:\/\/theblockbrew.com\/?p=209","title":{"rendered":"O que s\u00e3o os SMART CONTRACTS?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"209\" class=\"elementor elementor-209\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d5ec499 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d5ec499\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-32987a65\" data-id=\"32987a65\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1af4dd50 elementor-widget elementor-widget-text-editor\" data-id=\"1af4dd50\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><!-- wp:paragraph --><\/p>\n<p>Os <em>smart contracts<\/em>, <strong>contratos digitais program\u00e1veis<\/strong>, possibilitam a execu\u00e7\u00e3o autom\u00e1tica de um c\u00f3digo predefinido. Essa ideia foi proposta pelo cientista da computa\u00e7\u00e3o norte-americano Nick Szabo em 1994. Szabo, posteriormente, desenvolveu uma moeda virtual denominada Bit Gold, quatro anos depois.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Naquela \u00e9poca, a tecnologia ainda n\u00e3o estava pronta, e tanto os contratos digitais program\u00e1veis quanto a moeda virtual foram deixados de lado. No entanto, quando o Bitcoin foi anunciado no final de 2008, essa barreira tecnol\u00f3gica foi superada. Em pouco tempo, surgiram <strong>aplica\u00e7\u00f5es completamente digitais e aut\u00f4nomas para a execu\u00e7\u00e3o desses c\u00f3digos<\/strong> que comp\u00f5em os <em>smart contracts<\/em>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<h2>O que s\u00e3o os <em>SMART CONTRACTS<\/em>?<\/h2>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Os <em>smart contracts<\/em> s\u00e3o essencialmente <strong>c\u00f3digos program\u00e1veis que podem ser executados em sistemas computacionais<\/strong>. O que os torna distintos dos programas convencionais \u00e9 sua habilidade de se autoexecutarem autonomamente, sem a necessidade de interven\u00e7\u00e3o humana.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Embora sejam aut\u00f4nomos, seria imprudente afirmar que esses contratos s\u00e3o inteligentes, j\u00e1 que sua efic\u00e1cia depende exclusivamente da compet\u00eancia de quem os criou. <strong>N\u00e3o h\u00e1 nenhum tipo de intelig\u00eancia artificial ou mecanismo intr\u00ednseco para garantir que o c\u00f3digo desses smart contracts esteja isento de falhas<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<h2>Como funcionam os <em>SMART CONTRACTS<\/em>?<\/h2>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Quando se trata de <em>smart contracts<\/em>, a rede <em>blockchain<\/em> do <strong>Bitcoin<\/strong> optou por manter <strong>uma \u00fanica camada de informa\u00e7\u00f5es<\/strong>, o que limita suas possibilidades. No entanto, o Bitcoin oferece suporte nativo \u00e0s <strong>carteiras multi-assinatura<\/strong> (<strong>MultiSig<\/strong>), que exigem <strong>v\u00e1rias autoriza\u00e7\u00f5es para movimentar as moedas<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Por outro lado, o <strong>Ethereum<\/strong> surgiu como um protocolo constru\u00eddo sobre uma <em>blockchain<\/em> com o <strong>objetivo<\/strong> <strong>claro de executar <em>smart contracts<\/em><\/strong>, os contratos digitais program\u00e1veis. Para alcan\u00e7ar esse prop\u00f3sito, foram adicionadas camadas adicionais de informa\u00e7\u00f5es, <strong>permitindo a execu\u00e7\u00e3o de servi\u00e7os descentralizados<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>\u00c9 importante ressaltar que esses <strong><em>smart contracts<\/em> s\u00e3o armazenados na pr\u00f3pria rede<\/strong>, aproveitando os n\u00f3s (<strong>nodes<\/strong>) respons\u00e1veis por <strong>armazenar dados e validar transa\u00e7\u00f5es<\/strong>. Com isso, torna-se <strong>imposs\u00edvel impedir <\/strong>ou<strong> censurar as instru\u00e7\u00f5es contidas nesses contratos<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<h2>Simplificando processos: Desvendando o poder da tecnologia <em>blockchain<\/em> e <em>smart contracts<\/em><\/h2>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Como mencionado anteriormente, a tecnologia por tr\u00e1s dos <em>smart contracts<\/em> n\u00e3o \u00e9 nova e se assemelha a programas de computador convencionais. No entanto, foi com o advento do <em>blockchain<\/em> que esse mercado realmente ganhou impulso, sendo <strong>o pilar fundamental por tr\u00e1s da cria\u00e7\u00e3o do Bitcoin<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>\u00c9 crucial compreender que a exist\u00eancia de um contrato digital program\u00e1vel (<em>smart contract<\/em>) <strong>requer uma rede descentralizada<\/strong>. Caso contr\u00e1rio, uma \u00fanica entidade ou grupo com controle sobre computadores e servidores poderia simplesmente alterar o c\u00f3digo-fonte.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Foi nesse contexto que a <em>blockchain<\/em> do <strong>Ethereum<\/strong> (<strong>ETH<\/strong>) se destacou, despertando a imagina\u00e7\u00e3o dos desenvolvedores. Inicialmente utilizado para ofertas p\u00fablicas de criptoativos (ICO), ao longo do tempo, evoluiu para aplica\u00e7\u00f5es mais complexas e abrangentes, <strong>desbloqueando um potencial transformador<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<h2>O uso de aplica\u00e7\u00f5es descentralizadas (dApp) e <em>smart contracts<\/em><\/h2>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Um <strong>dApp<\/strong>, ou <strong>aplicativo descentralizado<\/strong>, \u00e9 um programa que <strong>opera exclusivamente atrav\u00e9s de <em>smart contracts<\/em><\/strong>. No entanto, para utilizar esses dApps, \u00e9 necess\u00e1rio <strong>integr\u00e1-los \u00e0s carteiras de criptoativos dos usu\u00e1rios<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Dessa forma, podemos <strong>encontrar dApps voltados para diversas \u00e1reas<\/strong>, como aplicativos financeiros, exchanges, redes sociais, marketplaces (plataformas de negocia\u00e7\u00e3o), jogos e muito mais. Vale ressaltar que o registro e <strong>a execu\u00e7\u00e3o desses dApps em redes descentralizadas t\u00eam um custo associado<\/strong>. Por consequ\u00eancia, as aplica\u00e7\u00f5es descentralizadas est\u00e3o intrinsecamente ligadas \u00e0s criptomoedas.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<h2>Finan\u00e7as descentralizadas (DeFi) e\u00a0<em>smart contracts<\/em><\/h2>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Os <em>smart contracts<\/em>, contratos digitais program\u00e1veis, podem ser considerados <strong>aplicativos financeiros descentralizados<\/strong> (<strong>DeFi<\/strong>) quando envolvem <strong>transa\u00e7\u00f5es monet\u00e1rias<\/strong>. Um exemplo comum \u00e9 o uso de <strong>criptoativos como garantia em empr\u00e9stimos<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Al\u00e9m disso, as <strong>exchanges descentralizadas<\/strong> (<strong>DEX<\/strong>) est\u00e3o ganhando popularidade, permitindo que os <strong>usu\u00e1rios troquem criptomoedas sem depender de uma entidade centralizada<\/strong>. Nessas trocas, n\u00e3o h\u00e1 envolvimento de moedas fiduci\u00e1rias, mas os<em> smart contracts<\/em> possibilitam a realiza\u00e7\u00e3o de negocia\u00e7\u00f5es autom\u00e1ticas, <strong>sem a necessidade de interven\u00e7\u00e3o humana<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Essas inova\u00e7\u00f5es est\u00e3o revolucionando a maneira como as finan\u00e7as funcionam, proporcionando <strong>transa\u00e7\u00f5es mais r\u00e1pidas<\/strong>, <strong>transparentes<\/strong> e <strong>aut\u00f4nomas<\/strong>. \u00c9 empolgante observar as possibilidades que surgem desse cen\u00e1rio, abrindo caminho para um <strong>futuro financeiro descentralizado<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<h2>Empresas aut\u00f4nomas descentralizadas (DAO) e <em>smart contracts<\/em><\/h2>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Uma nova onda de inova\u00e7\u00e3o surgiu com a utiliza\u00e7\u00e3o dos <em>smart contracts<\/em>, semelhante \u00e0s v\u00e1rias tentativas de criar uma <strong>DAO<\/strong>, uma <strong>organiza\u00e7\u00e3o aut\u00f4noma descentralizada<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Esses novos protocolos t\u00eam como objetivo <strong>automatizar as opera\u00e7\u00f5es de arbitragem nas exchanges descentralizadas<\/strong> (<strong>DEX<\/strong>) e nas <strong>aplica\u00e7\u00f5es financeiras descentralizadas<\/strong> (<strong>DeFi<\/strong>). A arbitragem busca aproveitar as <strong>distor\u00e7\u00f5es nas cota\u00e7\u00f5es <\/strong>ou nas<strong> taxas de empr\u00e9stimo<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Esses protocolos se tornaram extremamente populares, oferecendo <strong>altos retornos para os investidores<\/strong>, por\u00e9m, tamb\u00e9m apresentam um <strong>n\u00edvel de risco significativo<\/strong>. Grande parte dessa preocupa\u00e7\u00e3o surge devido \u00e0 <strong>dificuldade em auditar esses s<em>mart contracts<\/em><\/strong>. Infelizmente, temos testemunhado in\u00fameros casos de golpes e falhas no desenvolvimento, que permitiram que invasores drenassem os fundos, resultando em grandes preju\u00edzos para os investidores.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<h2>Protocolos DeFi e a gera\u00e7\u00e3o de dinheiro<\/h2>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Primeiramente, \u00e9 essencial criar um &#8220;<em><strong>pool<\/strong>&#8220;<\/em>, uma <strong>combina\u00e7\u00e3o de criptomoedas financiada por investidores<\/strong>. O protocolo de finan\u00e7as descentralizadas assume a responsabilidade de buscar <strong>dApps<\/strong> que oferecem r<strong>ecompensas pelo <em>staking<\/em><\/strong> ou <strong>dep\u00f3sito a prazo<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Entre os dApps mais <strong>renomados e influentes<\/strong>, destacam-se as plataformas de <strong>empr\u00e9stimos colateralizados,<\/strong> como <strong>MakerDAO<\/strong> (<strong>MKR<\/strong>), <strong>Aave<\/strong> (<strong>LEND<\/strong>) e <strong>Compound<\/strong> (<strong>COMP<\/strong>). No entanto, n\u00e3o podemos deixar de mencionar as aplica\u00e7\u00f5es de <strong>derivativos sint\u00e9ticos<\/strong>, como <strong>Synthetix<\/strong> (<strong>SNX<\/strong>), e as j\u00e1 mencionadas <strong>exchanges descentralizadas<\/strong> (<strong>DEX<\/strong>).<br \/>Falando em DEX vale ressaltar tamb\u00e9m o enorme crescimento do protocolo <strong>Uniswap<\/strong> (<strong>UNI<\/strong>) e a sua crescente utiliza\u00e7\u00e3o de &#8220;<strong>pools<\/strong>&#8221; como &#8220;<strong><em>market maker&#8221; <\/em><\/strong>(<strong>formador de mercado<\/strong>), resultando em <strong>altos rendimentos atrav\u00e9s das taxas que s\u00e3o coletadas<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Estamos diante de um ecossistema em constante evolu\u00e7\u00e3o, onde essas <strong>solu\u00e7\u00f5es inovadoras<\/strong> desempenham um papel crucial na <strong>democratiza\u00e7\u00e3o das finan\u00e7as<\/strong>. O objetivo \u00e9 <strong>proporcionar aos usu\u00e1rios a oportunidade de aproveitar ao m\u00e1ximo suas criptomoedas<\/strong>, maximizando os retornos e explorando novas possibilidades financeiras.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<h2>Tokens de governan\u00e7a<\/h2>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Por fim, mas igualmente importante, temos os criptoativos de governan\u00e7a. \u00c9 interessante observar que a maioria dos protocolos <strong>DeFi<\/strong> que buscam <strong>investimentos automatizados possui seu pr\u00f3prio token<\/strong>. Esses tokens proporcionam uma <strong>s\u00e9rie de benef\u00edcios aos detentores<\/strong>, desde o <strong>direito de voto em eventuais mudan\u00e7as do protocolo<\/strong> at\u00e9 mesmo a <strong>participa\u00e7\u00e3o nos ganhos gerados pelo sistema<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Resumidamente, estamos vivenciando um verdadeiro &#8220;boom&#8221; nesse novo mercado devido ao seu crescimento acelerado e \u00e0s <strong>opera\u00e7\u00f5es altamente lucrativas nas aplica\u00e7\u00f5es descentralizadas de finan\u00e7as<\/strong> (<strong>DeFi<\/strong>).<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>Nesse cen\u00e1rio empolgante, \u00e9 fundamental <strong>buscar informa\u00e7\u00f5es<\/strong> e <strong>orienta\u00e7\u00f5es adequadas para tomar decis\u00f5es conscientes<\/strong> e <strong>mitigar os poss\u00edveis riscos<\/strong>. A educa\u00e7\u00e3o e a compreens\u00e3o dos princ\u00edpios subjacentes ao DeFi s\u00e3o essenciais para aproveitar ao m\u00e1ximo as oportunidades e potencialidades desse novo paradigma financeiro.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>A revolu\u00e7\u00e3o dos Smart Contracts: Automatizando as transa\u00e7\u00f5es na era digital<\/p>\n","protected":false},"author":1,"featured_media":212,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-209","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-defi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que s\u00e3o os SMART CONTRACTS? 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