{"id":8502,"date":"2022-02-20T14:02:43","date_gmt":"2022-02-20T13:02:43","guid":{"rendered":"https:\/\/simplecryptoguide.com\/?p=8502"},"modified":"2026-10-26T14:37:40","modified_gmt":"2026-10-26T13:37:40","slug":"what-is-web-3","status":"publish","type":"post","link":"https:\/\/simplecryptoguide.com\/pt\/what-is-web-3\/","title":{"rendered":"Web3 explicada: compreenda o que a sua carteira lhe pede para autorizar"},"content":{"rendered":"<div data-no-translation><p>[et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;40px||40px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; background_color=&#8221;#fff8d8&#8243;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;2_3,1_3&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; module_class=&#8221;scg-essential-hero&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;2_3&#8243;][et_pb_text _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; text_font=&#8221;Inter||||||||&#8221; text_font_size=&#8221;17px&#8221; text_text_color=&#8221;#354554&#8243; text_line_height=&#8221;1.7em&#8221; header_font=&#8221;Inter|700|||||||&#8221; header_text_color=&#8221;#10202b&#8221; header_2_font=&#8221;Inter|700|||||||&#8221; header_2_text_color=&#8221;#10202b&#8221; header_2_font_size=&#8221;30px&#8221; header_2_font_size_phone=&#8221;25px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font=&#8221;Inter|700|||||||&#8221; header_3_text_color=&#8221;#10202b&#8221; custom_margin=&#8221;0px||0px||false|false&#8221; header_font_size=&#8221;42px&#8221;]<\/p>\n<div class=\"scg-essential-breadcrumb\"><nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p><span class=\"last\">Home<\/span><\/p><\/nav><\/div>\n<h1>Web3 explicada: compreenda o que a sua carteira lhe pede para autorizar<\/h1>\n<p>Web3 descreve aplica\u00e7\u00f5es que usam blockchains, carteiras e protocolos partilhados em algumas fun\u00e7\u00f5es, como trocas de tokens, propriedade de colecion\u00e1veis e governa\u00e7\u00e3o comunit\u00e1ria. N\u00e3o \u00e9 outra internet \u00e0 qual tenha de aderir. O r\u00f3tulo n\u00e3o torna uma aplica\u00e7\u00e3o descentralizada, privada ou segura. A quest\u00e3o \u00e9 o que controla e o que ainda depende de um operador.<\/p>\n<p class=\"scg-essential-task\">A sua tarefa: distinguir liga\u00e7\u00e3o da carteira, assinatura e autoriza\u00e7\u00e3o de tokens antes de decidir se um pedido corresponde \u00e0 sua inten\u00e7\u00e3o.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;1_3&#8243;][et_pb_image _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; src=&#8221;https:\/\/simplecryptoguide.com\/wp-content\/uploads\/2026\/10\/crypto-community-message-board.png&#8221; alt=&#8221;Bal\u00f5es com n\u00f3s blockchain ligados, ilustrando aplica\u00e7\u00f5es e comunidades Web3&#8243; title_text=&#8221;Bal\u00f5es com n\u00f3s blockchain ligados, ilustrando aplica\u00e7\u00f5es e comunidades Web3&#8243; align=&#8221;center&#8221; max_width=&#8221;260px&#8221; custom_margin=&#8221;0px|auto|0px|auto|true|true&#8221;][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;26px||26px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; module_id=&#8221;concept-map&#8221;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;4_4&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;0px||0px||false|false&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; text_font=&#8221;Inter||||||||&#8221; text_font_size=&#8221;17px&#8221; text_text_color=&#8221;#354554&#8243; text_line_height=&#8221;1.7em&#8221; header_font=&#8221;Inter|700|||||||&#8221; header_text_color=&#8221;#10202b&#8221; header_2_font=&#8221;Inter|700|||||||&#8221; header_2_text_color=&#8221;#10202b&#8221; header_2_font_size=&#8221;30px&#8221; header_2_font_size_phone=&#8221;25px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font=&#8221;Inter|700|||||||&#8221; header_3_text_color=&#8221;#10202b&#8221; custom_margin=&#8221;0px||0px||false|false&#8221;]<\/p>\n<h2>Tr\u00eas camadas de uma aplica\u00e7\u00e3o Web3<\/h2>\n<div class=\"scg-essential-grid scg-essential-flow\">\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">1<\/span><\/p>\n<h3>O site \u00e9 uma interface<\/h3>\n<p>Uma p\u00e1gina apresenta informa\u00e7\u00f5es e prop\u00f5e a\u00e7\u00f5es. Dom\u00ednio, alojamento, resultado de pesquisa e apoio podem ser controlados por uma empresa ou comprometidos. Um ecr\u00e3 familiar n\u00e3o prova que est\u00e1 a usar o contrato certo. Ler informa\u00e7\u00f5es ou consultar um endere\u00e7o p\u00fablico n\u00e3o deve exigir a frase de recupera\u00e7\u00e3o.<\/p>\n<\/div>\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">2<\/span><\/p>\n<h3>A carteira gere a sua autoridade<\/h3>\n<p>A carteira gere chaves e pede autoriza\u00e7\u00e3o para a\u00e7\u00f5es. Uma liga\u00e7\u00e3o simples partilha normalmente informa\u00e7\u00f5es p\u00fablicas de contas selecionadas; por si s\u00f3, n\u00e3o permite gastar tokens. Leia cada pedido, pois as carteiras tamb\u00e9m suportam permiss\u00f5es avan\u00e7adas. Endere\u00e7os e hist\u00f3ricos p\u00fablicos s\u00e3o vis\u00edveis em cadeias p\u00fablicas mesmo sem liga\u00e7\u00e3o a um site.<\/p>\n<\/div>\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">3<\/span><\/p>\n<h3>Os contratos aplicam as regras<\/h3>\n<p>Um contrato inteligente executa regras programadas numa blockchain. Tokens podem representar saldos, votos ou acesso, mas nem toda a aplica\u00e7\u00e3o \u00fatil precisa de token pr\u00f3prio. Verifique se um administrador pode atualizar, suspender ou alterar o contrato. Interfaces, fornecedores de dados e servi\u00e7os de n\u00f3s alojados podem continuar centralizados apesar da liquida\u00e7\u00e3o numa blockchain.<\/p>\n<\/div>\n<\/div>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;26px||26px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; module_id=&#8221;walkthrough&#8221;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;4_4&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;0px||0px||false|false&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; text_font=&#8221;Inter||||||||&#8221; text_font_size=&#8221;17px&#8221; text_text_color=&#8221;#354554&#8243; text_line_height=&#8221;1.7em&#8221; header_font=&#8221;Inter|700|||||||&#8221; header_text_color=&#8221;#10202b&#8221; header_2_font=&#8221;Inter|700|||||||&#8221; header_2_text_color=&#8221;#10202b&#8221; header_2_font_size=&#8221;30px&#8221; header_2_font_size_phone=&#8221;25px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font=&#8221;Inter|700|||||||&#8221; header_3_text_color=&#8221;#10202b&#8221; custom_margin=&#8221;0px||0px||false|false&#8221;]<\/p>\n<h2>Examine um pedido em tr\u00eas passos<\/h2>\n<div class=\"scg-essential-grid\">\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">1<\/span><\/p>\n<h3>Verifique destino e rede<\/h3>\n<p>Comece num endere\u00e7o do projeto verificado de forma independente, n\u00e3o numa mensagem inesperada ou an\u00fancio patrocinado. Confira rede, conta e destino do contrato na carteira. O s\u00edmbolo do ativo n\u00e3o chega para identificar o contrato. Leia a a\u00e7\u00e3o antes de ligar uma conta com ativos valiosos.<\/p>\n<\/div>\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">2<\/span><\/p>\n<h3>Identifique o que autoriza<\/h3>\n<p>Uma assinatura de mensagem pode iniciar sess\u00e3o, mas outras assinaturas autorizam ordens ou gastos de tokens. N\u00e3o haver gas n\u00e3o significa aus\u00eancia de risco. Uma aprova\u00e7\u00e3o ou permit pode dar a um terceiro espec\u00edfico acesso a um token espec\u00edfico. Uma transa\u00e7\u00e3o pode mover fundos ou alterar o estado da cadeia. Se a a\u00e7\u00e3o n\u00e3o for leg\u00edvel ou n\u00e3o a souber explicar, pare em vez de assinar sem compreender.<\/p>\n<\/div>\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">3<\/span><\/p>\n<h3>Limite o \u00e2mbito e confirme depois<\/h3>\n<p>Numa autoriza\u00e7\u00e3o suportada, examine token, entidade autorizada e montante, limitando a permiss\u00e3o \u00e0 tarefa quando poss\u00edvel. Verifique o gas separadamente. Ap\u00f3s a transa\u00e7\u00e3o, consulte estado e altera\u00e7\u00f5es reais de tokens na carteira ou explorador. Desligar o site remove a liga\u00e7\u00e3o, mas n\u00e3o revoga automaticamente uma autoriza\u00e7\u00e3o de gasto restante.<\/p>\n<\/div>\n<\/div>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;26px||26px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; module_id=&#8221;worked-example&#8221;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;4_4&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;30px|30px|30px|30px|true|true&#8221; module_class=&#8221;scg-essential-panel&#8221; background_color=&#8221;#fff8d8&#8243; custom_padding_phone=&#8221;22px|18px|22px|18px|true|true&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; border_radii=&#8221;on|16px|16px|16px|16px&#8221; border_width_all=&#8221;1px&#8221; border_color_all=&#8221;#e5d89e&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; text_font=&#8221;Inter||||||||&#8221; text_font_size=&#8221;17px&#8221; text_text_color=&#8221;#354554&#8243; text_line_height=&#8221;1.7em&#8221; header_font=&#8221;Inter|700|||||||&#8221; header_text_color=&#8221;#10202b&#8221; header_2_font=&#8221;Inter|700|||||||&#8221; header_2_text_color=&#8221;#10202b&#8221; header_2_font_size=&#8221;30px&#8221; header_2_font_size_phone=&#8221;25px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font=&#8221;Inter|700|||||||&#8221; header_3_text_color=&#8221;#10202b&#8221; custom_margin=&#8221;0px||0px||false|false&#8221;]<\/p>\n<h2>Exemplo: o pagamento n\u00e3o \u00e9 o limite da autoriza\u00e7\u00e3o<\/h2>\n<div class=\"scg-essential-equation\"><span>25 TOKEN<\/span><span>\u2260<\/span><strong>10,000 TOKEN<\/strong><\/div>\n<p>Pretende usar 25 unidades de um TOKEN fict\u00edcio. A carteira pede antes autoriza\u00e7\u00e3o para um contrato gastar 10.000 TOKEN. Isso permite at\u00e9 400 vezes o montante pretendido, n\u00e3o \u00e9 um recibo de pagamento de 25 tokens. Uma autoriza\u00e7\u00e3o normal aplica-se \u00e0quele token, entidade e rede, podendo expor futuros dep\u00f3sitos enquanto vigorar. Verifique primeiro a entidade autorizada e reduza o limite para 25 se o processo permitir, ou rejeite. Um limite inferior restringe o montante exposto por essa permiss\u00e3o, mas n\u00e3o prova a fiabilidade do contrato. A compra ou dep\u00f3sito \u00e9 uma a\u00e7\u00e3o separada, salvo combina\u00e7\u00e3o expl\u00edcita dos passos pela aplica\u00e7\u00e3o.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;26px||26px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; module_id=&#8221;common-mistakes&#8221;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;4_4&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;0px||0px||false|false&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; text_font=&#8221;Inter||||||||&#8221; text_font_size=&#8221;17px&#8221; text_text_color=&#8221;#354554&#8243; text_line_height=&#8221;1.7em&#8221; header_font=&#8221;Inter|700|||||||&#8221; header_text_color=&#8221;#10202b&#8221; header_2_font=&#8221;Inter|700|||||||&#8221; header_2_text_color=&#8221;#10202b&#8221; header_2_font_size=&#8221;30px&#8221; header_2_font_size_phone=&#8221;25px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font=&#8221;Inter|700|||||||&#8221; header_3_text_color=&#8221;#10202b&#8221; custom_margin=&#8221;0px||0px||false|false&#8221;]<\/p>\n<h2>Erros que criam risco desnecess\u00e1rio<\/h2>\n<div class=\"scg-essential-grid\">\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">1<\/span><\/p>\n<h3>Tratar a assinatura como um in\u00edcio de sess\u00e3o inofensivo<\/h3>\n<p>Leia dom\u00ednio, objetivo, \u00e2mbito dos tokens e validade quando apresentados. Algumas assinaturas fora da cadeia podem autorizar a\u00e7\u00f5es futuras na cadeia. Uma assinatura gratuita n\u00e3o \u00e9 necessariamente uma mensagem inofensiva. Nunca aprove apenas porque uma conta que se diz apoio afirma que isso desbloquear\u00e1 fundos.<\/p>\n<\/div>\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">2<\/span><\/p>\n<h3>Confundir propriedade com acesso garantido<\/h3>\n<p>Possuir um token n\u00e3o garante que o seu site, ficheiro de imagem ou mercado continue dispon\u00edvel. Tokens de governa\u00e7\u00e3o n\u00e3o d\u00e3o controlo efetivo automaticamente se os votos estiverem concentrados ou um administrador puder contrariar decis\u00f5es. Pergunte o que est\u00e1 na cadeia, o que depende de servidores externos e quem pode alterar cada parte.<\/p>\n<\/div>\n<div class=\"scg-essential-card\"><span class=\"scg-essential-number\" aria-hidden=\"true\">3<\/span><\/p>\n<h3>Pensar que desligar \u00e9 revogar<\/h3>\n<p>Desligar um site e revogar uma autoriza\u00e7\u00e3o s\u00e3o opera\u00e7\u00f5es diferentes. Reveja permiss\u00f5es numa carteira ou explorador de confian\u00e7a, na rede correta. A revoga\u00e7\u00e3o on-chain geralmente exige gas e altera permiss\u00f5es futuras; n\u00e3o recupera ativos j\u00e1 transferidos. N\u00e3o use liga\u00e7\u00f5es aleat\u00f3rias de \u201climpeza de carteira\u201d que lhe enviem.<\/p>\n<\/div>\n<\/div>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;26px||26px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; module_id=&#8221;practice&#8221;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;4_4&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;30px|30px|30px|30px|true|true&#8221; module_class=&#8221;scg-essential-panel&#8221; background_color=&#8221;#fff8d8&#8243; custom_padding_phone=&#8221;22px|18px|22px|18px|true|true&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; border_radii=&#8221;on|16px|16px|16px|16px&#8221; border_width_all=&#8221;1px&#8221; border_color_all=&#8221;#e5d89e&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; text_font=&#8221;Inter||||||||&#8221; text_font_size=&#8221;17px&#8221; text_text_color=&#8221;#354554&#8243; text_line_height=&#8221;1.7em&#8221; header_font=&#8221;Inter|700|||||||&#8221; header_text_color=&#8221;#10202b&#8221; header_2_font=&#8221;Inter|700|||||||&#8221; header_2_text_color=&#8221;#10202b&#8221; header_2_font_size=&#8221;30px&#8221; header_2_font_size_phone=&#8221;25px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font=&#8221;Inter|700|||||||&#8221; header_3_text_color=&#8221;#10202b&#8221; custom_margin=&#8221;0px||0px||false|false&#8221;]<\/p>\n<h2>Exerc\u00edcio: avalie o pedido<\/h2>\n<p>Quer depositar 20 TOKEN. Um site solicita autoriza\u00e7\u00e3o para 5.000 TOKEN e diz que desligar a carteira depois elimina a permiss\u00e3o. O que est\u00e1 errado e o que deve verificar antes de avan\u00e7ar?<\/p>\n<details>\n<summary>Mostrar a explica\u00e7\u00e3o<\/summary>\n<p>A autoriza\u00e7\u00e3o \u00e9 250 vezes o dep\u00f3sito previsto. Desligar n\u00e3o a revoga. Verifique site, rede, contrato do token, entidade autorizada e \u00e2mbito. Use um limite menor adequado se suportado, ou rejeite. Confirme o dep\u00f3sito separadamente e reveja permiss\u00f5es restantes. Nem uma transa\u00e7\u00e3o bem-sucedida nem uma autoriza\u00e7\u00e3o limitada provam a seguran\u00e7a da aplica\u00e7\u00e3o.<\/p>\n<\/details>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;26px||26px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; module_id=&#8221;next-steps&#8221;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;4_4&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;0px||0px||false|false&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; text_font=&#8221;Inter||||||||&#8221; text_font_size=&#8221;17px&#8221; text_text_color=&#8221;#354554&#8243; text_line_height=&#8221;1.7em&#8221; header_font=&#8221;Inter|700|||||||&#8221; header_text_color=&#8221;#10202b&#8221; header_2_font=&#8221;Inter|700|||||||&#8221; header_2_text_color=&#8221;#10202b&#8221; header_2_font_size=&#8221;30px&#8221; header_2_font_size_phone=&#8221;25px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font=&#8221;Inter|700|||||||&#8221; header_3_text_color=&#8221;#10202b&#8221; custom_margin=&#8221;0px||0px||false|false&#8221;]<\/p>\n<h2>Pratique as verifica\u00e7\u00f5es antes de usar uma aplica\u00e7\u00e3o<\/h2>\n<div class=\"scg-essential-actions\"><a class=\"scg-essential-button\" href=\"https:\/\/simplecryptoguide.com\/pt\/criptocurrency-wallets\/\">Compreenda as carteiras cripto<span aria-hidden=\"true\">\u2192<\/span><\/a><a class=\"scg-essential-button\" href=\"https:\/\/simplecryptoguide.com\/pt\/como-manter-a-sua-moeda-criptografica-segura\/\">Proteja chaves e permiss\u00f5es<span aria-hidden=\"true\">\u2192<\/span><\/a><a class=\"scg-essential-button\" href=\"https:\/\/simplecryptoguide.com\/pt\/crypto-readiness-quiz\/\">Teste a sua prepara\u00e7\u00e3o para cripto<span aria-hidden=\"true\">\u2192<\/span><\/a><a class=\"scg-essential-button\" href=\"https:\/\/simplecryptoguide.com\/pt\/categoria\/how-to-buy\/buy-defi\/\">Explore guias de compra DeFi<span aria-hidden=\"true\">\u2192<\/span><\/a><\/div>\n<p class=\"scg-essential-sources\"><a href=\"https:\/\/accounts.binance.com\/en\/register?ref=RP2JHHRW\" rel=\"sponsored nofollow noopener\" target=\"_blank\">Binance (link de afiliado)<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;26px||26px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; module_id=&#8221;sources&#8221;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;4_4&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;0px||0px||false|false&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; text_font=&#8221;Inter||||||||&#8221; text_font_size=&#8221;17px&#8221; text_text_color=&#8221;#354554&#8243; text_line_height=&#8221;1.7em&#8221; header_font=&#8221;Inter|700|||||||&#8221; header_text_color=&#8221;#10202b&#8221; header_2_font=&#8221;Inter|700|||||||&#8221; header_2_text_color=&#8221;#10202b&#8221; header_2_font_size=&#8221;30px&#8221; header_2_font_size_phone=&#8221;25px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font=&#8221;Inter|700|||||||&#8221; header_3_text_color=&#8221;#10202b&#8221; custom_margin=&#8221;0px||0px||false|false&#8221;]<\/p>\n<h2>Fontes e leituras adicionais<\/h2>\n<ul class=\"scg-essential-sources\">\n<li><a href=\"https:\/\/ethereum.org\/web3\/\" target=\"_blank\" rel=\"noopener\">Ethereum \u2014 introduction to Web3<\/a><\/li>\n<li><a href=\"https:\/\/support.metamask.io\/more-web3\/dapps\/manage-dapp-permissions\" target=\"_blank\" rel=\"noopener\">MetaMask \u2014 dapp permissions<\/a><\/li>\n<li><a href=\"https:\/\/support.metamask.io\/configure\/tokens\/how-to-customize-token-approvals-with-a-spending-cap\/\" target=\"_blank\" rel=\"noopener\">MetaMask \u2014 spending caps<\/a><\/li>\n<li><a href=\"https:\/\/support.metamask.io\/hc\/en-us\/articles\/4446106184731\" target=\"_blank\" rel=\"noopener\">MetaMask \u2014 revoking token approvals<\/a><\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; fb_built=&#8221;1&#8243; module_class=&#8221;scg-handbook scg-essential-lesson&#8221; custom_padding=&#8221;0px||0px||true|false&#8221; custom_padding_phone=&#8221;18px||18px||true|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221;][et_pb_row _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; column_structure=&#8221;4_4&#8243; width=&#8221;92%&#8221; max_width=&#8221;1120px&#8221; custom_padding=&#8221;0px||0px||false|false&#8221;][et_pb_column _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; type=&#8221;4_4&#8243;][et_pb_code _builder_version=&#8221;4.27.9&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<\/p>\n<style>body #page-container .scg-template-reading-column .scg-essential-lesson .et_pb_row.scg-essential-panel{padding:30px!important}@media(max-width:600px){body #page-container .scg-template-reading-column .scg-essential-lesson .et_pb_row.scg-essential-panel{padding:22px 18px!important}}body #page-container .scg-template-reading-column .scg-essential-lesson .et_pb_text a.scg-essential-button:hover,body #page-container .scg-template-reading-column .scg-essential-lesson .et_pb_text a.scg-essential-button:focus-visible{background:#10202b!important;color:#ffda26!important}.scg-essential-lesson h1{margin-bottom:20px!important;line-height:1.16!important}.scg-essential-lesson h2{line-height:1.25!important;margin-bottom:24px}.scg-essential-lesson h3{font-size:21px!important;line-height:1.35!important;margin-bottom:12px}.scg-essential-lesson p+p{margin-top:16px}.scg-essential-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.scg-essential-card{min-width:0;padding:24px;border:1px solid #cbd5dc;border-radius:14px;background:#fff}.scg-essential-flow .scg-essential-card{border:2px solid #10202b;box-shadow:4px 4px 0 #ffda26}.scg-essential-number{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;margin-bottom:18px;border:1px solid #10202b;border-radius:8px;background:#ffda26;color:#10202b;font-weight:800}.scg-essential-lesson .scg-essential-task{border-left:4px solid #ffda26;padding:12px 16px;background:#fff;color:#10202b;font-weight:600;margin-top:24px}.scg-essential-hero{display:flex;align-items:center;gap:28px}.scg-essential-hero>.et_pb_column{margin:0!important}.scg-essential-hero>.et_pb_column:first-child{flex:1}.scg-essential-hero>.et_pb_column:last-child{width:28%!important;flex:0 0 28%}.scg-essential-lesson details{margin-top:24px;border:1px solid #10202b;border-radius:10px;background:#fff;padding:0 20px}.scg-essential-lesson summary{padding:16px 0;cursor:pointer;min-height:48px;font-weight:700;color:#10202b}.scg-essential-lesson details p{padding-bottom:20px}.scg-essential-lesson summary:focus-visible,.scg-essential-lesson a:focus-visible{outline:3px solid #356ca6;outline-offset:4px}.scg-essential-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.scg-essential-lesson a.scg-essential-button,.scg-essential-lesson a.scg-essential-button:visited{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;padding:14px 18px;border:1px solid #c4a728;border-radius:8px;background:#ffda26;color:#10202b!important;font-weight:700;text-decoration:none!important;line-height:1.4;transform:none!important;transition:background-color .15s,color .15s}.scg-essential-lesson a.scg-essential-button:hover,.scg-essential-lesson a.scg-essential-button:focus-visible{background:#10202b!important;color:#ffda26!important;transform:none!important}.scg-essential-sources{font-size:14px}.scg-essential-sources a{color:#10202b!important;text-underline-offset:4px}.scg-essential-equation{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;padding:24px 16px;margin:0 0 24px;border:2px solid #10202b;border-radius:12px;background:#fff;font-size:24px;font-weight:800;color:#10202b;font-variant-numeric:tabular-nums}.scg-essential-equation strong{background:#ffda26;border-radius:6px;padding:4px 12px}.scg-essential-lesson .scg-essential-breadcrumb{font-size:13px;margin-bottom:20px}@media(max-width:980px){.scg-essential-grid{grid-template-columns:1fr}.scg-essential-hero{flex-direction:column;align-items:stretch}.scg-essential-hero>.et_pb_column:first-child,.scg-essential-hero>.et_pb_column:last-child{width:100%!important;flex:auto}.scg-essential-hero>.et_pb_column:last-child{display:flex;justify-content:center}.scg-essential-hero .et_pb_image{width:200px!important}.scg-essential-card{padding:22px}}@media(max-width:600px){.scg-essential-actions{grid-template-columns:1fr}.scg-essential-lesson h1{font-size:31px!important}.scg-essential-lesson h2{font-size:26px!important}.scg-essential-equation{font-size:19px;padding:18px 12px}.scg-essential-lesson .et_pb_text{overflow-wrap:break-word}}<\/style>\n<p>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Compreenda liga\u00e7\u00f5es Web3, assinaturas e autoriza\u00e7\u00f5es de tokens com um exemplo de limite de gasto, verifica\u00e7\u00f5es pr\u00e1ticas e um exerc\u00edcio.<\/p>\n","protected":false},"author":1,"featured_media":8510,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[97],"tags":[1119,1120,1117,1118,1121,1116],"class_list":["post-8502","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-beginner","tag-web-1-0","tag-web-2-0","tag-web-3","tag-web-3-0","tag-web-3-0-use-cases","tag-web3"],"_links":{"self":[{"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/posts\/8502","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/comments?post=8502"}],"version-history":[{"count":1,"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/posts\/8502\/revisions"}],"predecessor-version":[{"id":18797,"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/posts\/8502\/revisions\/18797"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/media\/8510"}],"wp:attachment":[{"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/media?parent=8502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/categories?post=8502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/simplecryptoguide.com\/pt\/wp-json\/wp\/v2\/tags?post=8502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}