October 2025
Intermediate to advanced
570 pages
16h 46m
Portuguese (Portugal, Brazil)
book
Dominando o Ethereum, 2nd Edition
by Carlo Parisi, Alessandro Mazza, Niccolo Pozzolini, Gavin Wood, Andreas M. Antonopoulos
Content preview from Dominando o Ethereum, 2nd Edition
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Capítulo 7. Contratos inteligentes e Solidity
Este trabalho foi traduzido com recurso a IA. Agradecemos o teu feedback e comentários: translation-feedback@oreilly.com
Como discutimos no Capítulo 2, há dois tipos diferentes de contas na Ethereum: EOAs e contas de contrato. As EOAs são controladas pelos usuários, geralmente por meio de software, como um aplicativo de carteira que é externo à plataforma Ethereum. Por outro lado, as contas de contrato são controladas pelo código do programa (também comumente chamado de contratos inteligentes) que é executado pelo EVM.
Em resumo, as EOAs são contas simples sem nenhum código associado ou armazenamento de dados, enquanto as contas de contrato têm código associado e armazenamento de dados. As EOAs são controladas por transações criadas e assinadas criptograficamente com uma chave privada no "mundo real" externo e independente do protocolo, enquanto as contas de contrato não têm chaves privadas e, portanto, "controlam a si mesmas" da maneira predeterminada prescrita pelo código do contrato inteligente. Ambos os tipos de contas são identificados por um endereço Ethereum. Neste capítulo, discutiremos as contas de contrato e o código do programa que as controla.
O que é um contrato inteligente?
O termo contrato inteligente tem sido usado ao longo dos anos para descrever uma grande variedade de coisas. Na década de 1990, o criptógrafo Nick Szabo cunhou o termo e o definiu como "um conjunto de promessas, especificadas em formato digital, incluindo ...
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