{"id":4844,"date":"2020-12-09T23:33:52","date_gmt":"2020-12-09T20:33:52","guid":{"rendered":"https:\/\/alfacash.blog\/?p=4844"},"modified":"2024-02-19T21:52:42","modified_gmt":"2024-02-19T18:52:42","slug":"que-son-contratos-inteligentes-para-que-sirven","status":"publish","type":"post","link":"https:\/\/alfacash.blog\/es\/2020\/12\/09\/que-son-contratos-inteligentes-para-que-sirven\/","title":{"rendered":"\u00bfQu\u00e9 diablos son los contratos inteligentes? Una guia facil"},"content":{"rendered":"<p>Probablemente ya sepas qu\u00e9 es un contrato (tradicional), \u00bfverdad? De todos modos, record\u00e9moslo. Seg\u00fan el diccionario Merriam-Webster, un contrato es &quot;un acuerdo vinculante entre dos o m\u00e1s personas o partes, especialmente una legalmente ejecutable&quot;. Bueno, entonces, \u00bfqu\u00e9 es lo primero que te viene a la mente cuando decimos \u201ccontratos inteligentes\u201d?<\/p>\n\n\n\n<p>\u00bfQuiz\u00e1s el documento est\u00e9 en una tableta? \u00bfEs ahora un robot? \u00bfUna IA, detr\u00e1s de una computadora? \u00bfEst\u00e1 simplemente ... conectado a Internet? No exactamente. Si revisa otras fuentes (como la vieja Wikipedia confiable), dir\u00e1n algo como <strong>un contrato inteligente es un &quot;protocolo digital&quot; o &quot;programa inform\u00e1tico&quot; que ejecuta sus condiciones predeterminadas autom\u00e1ticamente<\/strong> cuando estos se cumplan.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"482\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-1024x482.jpg\" alt=\"\" class=\"wp-image-4850\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-1024x482.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-300x141.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-150x71.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-18x8.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-270x127.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-770x363.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-1078x508.jpg 1078w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-900x424.jpg 900w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-370x174.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-554x261.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-306x144.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-260x122.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280-87x41.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/shaking-hands-2965055_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Imagen de Gerd Altmann en Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n<p>Bien, \u00bfeh\u2026? \u00bfY qu\u00e9 diablos significa eso? Bueno, podemos explicarlo de esta manera: un contrato inteligente no es algo que pueda tocar o incluso ver correctamente. En general, solo ver\u00e1 los resultados, al igual que con los cables dentro de su televisor. La diferencia es que esta vez esos resultados son completamente digitales porque es un acuerdo digital basado en <a href=\"https:\/\/alfacash.blog\/2020\/08\/30\/dummies-what-is-blockchain-how-it-works\/\" target=\"_blank\" rel=\"noreferrer noopener\">una cadena de bloques<\/a>, redactado con c\u00f3digo computacional para hacer cumplir las condiciones anteriores pactadas por las partes. Puede considerarlo como un contrato o garant\u00eda autom\u00e1tica, que no necesita papel, abogado, notario o intermediarios en general.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Entonces ... \u00bfc\u00f3mo funcionan los contratos inteligentes para un hombre promedio?<\/strong><\/h2>\n\n\n\n<p>La respuesta corta es con aplicaciones o herramientas digitales. Si no sabe c\u00f3mo escribir c\u00f3digo (como desarrolladores o ingenieros inform\u00e1ticos), no estar\u00e1 a cargo de crearlos, as\u00ed que no se preocupe. Deje esa tarea a los expertos. <strong>Para usarlos, solo tendr\u00e1 que elegir una aplicaci\u00f3n o plataforma basada en contratos inteligentes (generalmente aplicaciones descentralizadas)<\/strong> e ir con \u00e9l en su dispositivo (m\u00f3vil o de escritorio).<\/p>\n\n\n\n<p>Sin embargo, podemos hablar un poco sobre el funcionamiento interno de un contrato inteligente. En primer lugar, revisemos una imagen para mostrarle c\u00f3mo se ven por dentro. Spoiler: es un poco aburrido. Es solo un mont\u00f3n de c\u00f3digo.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"331\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-1024x331.jpg\" alt=\"\" class=\"wp-image-4851\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-1024x331.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-300x97.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-150x49.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-18x6.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-270x87.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-770x249.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-1170x378.jpg 1170w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-900x291.jpg 900w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-370x120.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-554x179.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-306x99.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-260x84.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_-87x28.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contract-example.-Source-Ethereum.org_.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Ejemplo de contrato inteligente. Fuente: Ethereum.org<\/figcaption><\/figure><\/div>\n\n\n\n<p>Tambi\u00e9n podemos comprobar sus datos en un <a href=\"https:\/\/etherscan.io\/address\/0xf4985070ce32b6b1994329df787d1acc9a2dd9e2\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">explorador de blockchain<\/a> (una p\u00e1gina web accesible), si es p\u00fablica, por supuesto. Los bancos est\u00e1n desarrollando sus propias aplicaciones con contratos inteligentes, por lo que no son p\u00fablicos. Pero podemos comprobar, por ejemplo, un contrato medio en Ethereum.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"450\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-1024x450.jpg\" alt=\"\" class=\"wp-image-4852\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-1024x450.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-300x132.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-150x66.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-18x8.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-270x119.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-770x338.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-1157x508.jpg 1157w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-900x395.jpg 900w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-370x163.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-554x243.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-306x134.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-260x114.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan-87x38.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Example-of-public-data-in-a-smart-contract.-Source-Etherscan.jpg 1168w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Ejemplo de datos p\u00fablicos en un contrato inteligente. Fuente: Etherscan<\/figcaption><\/figure><\/div>\n\n\n\n<p>Descubrimos aqu\u00ed algo importante sobre los contratos inteligentes. <strong>Adem\u00e1s del c\u00f3digo, est\u00e1n hechos de transacciones y un saldo monetario. <\/strong>Sin embargo, esto no significa que el \u00fanico uso para ellos deba ser financiero: las transacciones tambi\u00e9n pueden representar solo informaci\u00f3n. En cuanto al saldo, lo cierto es que los contratos inteligentes descentralizados requieren unas tarifas para funcionar (normalmente en forma de criptomonedas), destinadas al <a href=\"https:\/\/alfacash.blog\/2020\/08\/25\/cryptocurrency-mining-dummies-how-works\/\" target=\"_blank\" rel=\"noreferrer noopener\">mineros o validadores<\/a> de la cadena de bloques.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>El proceso es como ...<\/strong><\/h2>\n\n\n\n<p>Dentro de Ethereum, por ejemplo, un contrato es solo <a href=\"https:\/\/ethereum.org\/en\/developers\/docs\/smart-contracts\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">otro tipo de direcci\u00f3n<\/a> (billetera \/ cuenta), con saldo y transacciones. Pero es una especie de direcci\u00f3n colectiva, dise\u00f1ada para funcionar como puente entre dos o m\u00e1s partes, con condiciones preestablecidas. Por lo tanto, esta direcci\u00f3n no est\u00e1 controlada solo por un usuario, sino por sus propios t\u00e9rminos acordados previamente, aplicados por toda la red Ethereum.<\/p>\n\n\n\n<p><strong>El desencadenante para que esta direcci\u00f3n haga algo (como realizar transacciones de dinero autom\u00e1ticamente) es un evento esperado por las partes<\/strong>. Podr\u00eda ser una venta, una fecha de pago, un registro de algo, un nuevo producto en l\u00ednea, <a href=\"https:\/\/alfacash.blog\/2020\/08\/22\/bitcoin-to-the-moon-5-predictions-for-2021-and-beyond\/\" target=\"_blank\" rel=\"noreferrer noopener\">un cambio de precio<\/a>, una encuesta o incluso los resultados deportivos.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"575\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-1024x575.jpg\" alt=\"\" class=\"wp-image-4853\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-1024x575.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-300x169.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-150x84.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-18x10.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-270x152.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-770x433.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-904x508.jpg 904w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-900x506.jpg 900w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-370x208.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-554x311.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-306x172.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-260x146.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280-87x49.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/marathon-2346948_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Imagen de kinkate en Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n<p>El contrato alcanza la informaci\u00f3n proporcionada sobre \u00e9l por las partes involucradas o por un \u201cor\u00e1culo\u201d (un software que consulta fuentes externas), y act\u00faa en consecuencia, siguiendo sus condiciones preestablecidas.<\/p>\n\n\n\n<p><strong>En resumen, este es el proceso:<\/strong><\/p>\n\n\n\n<p>1. Las partes negocian los t\u00e9rminos del contrato (o la empresa \/ desarrollador los hace p\u00fablicos para todos los que quieran unirse).<br>2. El desarrollador crea el protocolo dentro de una cadena de bloques seleccionada (<a href=\"https:\/\/alfacash.blog\/2020\/11\/14\/ethereum-2-new-features-prices-more-ethereum-chains\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ethereum<\/a>, EOS, Tron, Cardano, RSK, etc.), utilizando los t\u00e9rminos acordados.<br>3. El contrato y sus t\u00e9rminos est\u00e1n representados dentro de una direcci\u00f3n de dicha cadena de bloques.<br>4. El evento ocurre.<br>5. El contrato realiza las transacciones de acuerdo al resultado de dicho evento.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><br><strong>Alice y Bob usaron contratos inteligentes<\/strong><\/h2>\n\n\n\n<p>Por supuesto, necesitamos un ejemplo cl\u00e1sico con Alice y Bob. Digamos que Alice va a apostar $500 con Bob sobre el <a href=\"https:\/\/alfacash.blog\/2020\/11\/28\/bitcoin-price-will-reach-60k-mid-2021-new-study\/\" target=\"_blank\" rel=\"noreferrer noopener\">Precio de Bitcoin<\/a> para el pr\u00f3ximo fin de semana. Bob cree que ser\u00e1 hasta X d\u00f3lares, mientras que Alice cree que bajar\u00e1 X d\u00f3lares.<\/p>\n\n\n\n<p>Entonces, deciden construir un contrato inteligente (apelando a un desarrollador o una plataforma como servicio) y establecen sus condiciones. <strong>Los fondos ($500) se depositar\u00e1n en criptomonedas al contrato,<\/strong> y si el precio de Bitcoin aumenta X durante el pr\u00f3ximo fin de semana, el contrato transferir\u00e1 autom\u00e1ticamente los fondos a Bob. Si el precio de <a href=\"https:\/\/alfacash.blog\/2020\/11\/25\/how-to-start-bitcoin-cryptos-5-steps\/\" target=\"_blank\" rel=\"noreferrer noopener\">Bitcoin<\/a> est\u00e1 bajando X, los fondos ir\u00e1n a la direcci\u00f3n de Alice. Y eso es.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-1024x682.jpg\" alt=\"Bitcoin-15000-bull-run\" class=\"wp-image-4624\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-1024x682.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-scaled-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-scaled-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-scaled-87x58.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-300x200.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-scaled-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-scaled.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-770x513.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-762x508.jpg 762w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-773x515.jpg 773w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-370x247.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-554x369.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-306x204.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bitcoin-2643188_1280-368x245.jpg 368w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p>Ahora, otra situaci\u00f3n, esta vez relacionada con Internet de las cosas (IoT). Alice quiere alquilar su casa a Bob y tiene la ventaja de tener una cerradura inteligente instalada, controlada digitalmente para abrir y cerrar la puerta. Entonces, construyen un contrato inteligente y establecen estos t\u00e9rminos: Bob pagar\u00e1 X d\u00f3lares en criptomonedas mensualmente.<\/p>\n\n\n\n<p>Si no lo hace durante dos meses, <strong>El contrato ordenar\u00e1 la cerradura inteligente para mantener cerrada la puerta (y el acceso a la casa).<\/strong> De esta manera, Alice se asegura de recibir debidamente la cifra acordada, y Bob no necesita reunir m\u00e1s documentos o requisitos para Alice.<\/p>\n\n\n\n<p>Y bueno, es un tipo de contrato, despu\u00e9s de todo. La imaginaci\u00f3n es el l\u00edmite.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Algunos usos populares de los contratos inteligentes<\/strong><\/h2>\n\n\n\n<p>Ya existen cientos de aplicaciones basadas en contratos inteligentes, con muchas categor\u00edas y funciones. Los intercambios, los juegos de azar, los juegos, la inversi\u00f3n, el sector inmobiliario, la sanidad, los mercados, las encuestas ... todos funcionan con contratos inteligentes.<\/p>\n\n\n\n<p>Tal vez algunos de estos Dapps (que no son contratos inteligentes per se, pero funcionan con ellos), te puedan sonar. CryptoKitties (coleccionables), Uniswap (intercambio), Aragon (gobierno), District0x (mercados y comunidades), Augur (mercado de predicci\u00f3n), Synthetix (para activos sint\u00e9ticos), Axie Infinity (juegos), Grid + (energ\u00eda) y Actifit (salud) son solo ejemplos. <strong>De acuerdo a <a href=\"https:\/\/www.stateofthedapps.com\/dapps\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">El estado de las Dapps<\/a>, hay m\u00e1s de 2500 de ellos.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"730\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-1024x730.jpg\" alt=\"\" class=\"wp-image-4854\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-1024x730.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-300x214.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-150x107.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-253x180.jpg 253w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-723x515.jpg 723w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-713x508.jpg 713w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-370x264.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-554x395.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-306x218.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-344x245.jpg 344w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-260x185.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280-87x62.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/touch-screen-1023966_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Imagen de Edar en Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u00bfY sabes qu\u00e9 m\u00e1s funciona con estos contratos? El conjunto <a href=\"https:\/\/alfacash.blog\/2020\/09\/09\/how-to-make-thousands-dollars-defi\/\" target=\"_blank\" rel=\"noreferrer noopener\">Finanzas descentralizadas (DeFi)<\/a> ecosistema, un boom en estos d\u00edas. All\u00ed podemos encontrar muchas herramientas de inversi\u00f3n (por <a href=\"https:\/\/alfacash.blog\/2020\/10\/07\/meet-best-performing-bold-platforms-yield-farming\/\" target=\"_blank\" rel=\"noreferrer noopener\">agricultura de rendimiento<\/a>, principalmente), pr\u00e9stamos, seguros, ahorros y m\u00e1s. Plataformas como Yearn Finance, Compound, UMA, Maker, Curve y <a href=\"https:\/\/alfacash.blog\/2020\/11\/22\/defi-protocol-pickle-finance-suffered-19m-hack-loses-value\/\" target=\"_blank\" rel=\"noreferrer noopener\">Finanzas Pickle<\/a> pertenecen a esta categor\u00eda.<\/p>\n\n\n\n<p>M\u00e1s all\u00e1 de esto, bancos y empresas como BBVA, Bankia, Sabadell, CaixaBank, IBM, Microsoft, Google, Ernst &amp; Young, S7 Airlines, <a href=\"https:\/\/alfacash.blog\/2020\/12\/01\/givingtuesday-here-again-lot-cryptocurrencies\/\" target=\"_blank\" rel=\"noreferrer noopener\">BitGive<\/a>, Money on Chain y OneSmart City est\u00e1n probando contratos inteligentes para mejorar sus servicios o ya los est\u00e1n utilizando en diferentes aplicaciones. Entonces, como puede ver, ya estamos llenos de estos contratos.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p class=\"has-text-align-center\"><em>\u00bfQuieres intercambiar BTC, ETH y otros tokens? Puedes hacerlo<\/em>\u00a0<em>sin peligro\u00a0<a href=\"https:\/\/www.alfa.cash\/buy\/bitcoin\" target=\"_blank\" rel=\"noreferrer noopener\">en Alfacash<\/a>! Y no olvides que estamos hablando de esto y muchas otras cosas en nuestras redes sociales.<br><br><\/em><a href=\"https:\/\/twitter.com\/alfacash_crypto\" target=\"_blank\" rel=\"noreferrer noopener\">Gorjeo<\/a>\u00a0*\u00a0<a href=\"https:\/\/t.me\/AlfacashCommunity\" target=\"_blank\" rel=\"noreferrer noopener\">Telegrama<\/a>\u00a0*\u00a0<a href=\"https:\/\/www.instagram.com\/alfacashstore\" target=\"_blank\" rel=\"noreferrer noopener\">Instagram<\/a> * <a href=\"https:\/\/www.youtube.com\/channel\/UCOl4fdRHj8AseQ5b6z9udaw\" target=\"_blank\" rel=\"noreferrer noopener\">Youtube<\/a>\u00a0*<a href=\"https:\/\/www.facebook.com\/alfacashstore\" target=\"_blank\" rel=\"noreferrer noopener\">Facebook<\/a>\u00a0\u00a0*\u00a0<a href=\"https:\/\/vk.com\/alfacashcrypto\" target=\"_blank\" rel=\"noreferrer noopener\">Vkontakte<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Los contratos inteligentes suenan como un t\u00e9rmino complicado, especialmente cuando intentan explicarlo. Veamos una descripci\u00f3n y usos sencillos.<\/p>","protected":false},"author":5,"featured_media":4848,"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":[86,61,44,84,107,199],"class_list":{"0":"post-4844","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-learn","8":"tag-blockchain","9":"tag-cryptocurrencies","10":"tag-decentralization","11":"tag-defi","12":"tag-ethereum","13":"tag-smart-contracts"},"featured_image_src":"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/12\/Smart-contracts-Guide-Alfacash.png","author_info":{"display_name":"Isabel P\u00e9rez","author_link":"https:\/\/alfacash.blog\/es\/author\/isabel\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v25.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What on earth are smart contracts? 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