{"id":326,"date":"2021-03-16T08:23:38","date_gmt":"2021-03-16T07:23:38","guid":{"rendered":"https:\/\/albertovr.com\/blog\/?p=326"},"modified":"2021-03-16T08:54:09","modified_gmt":"2021-03-16T07:54:09","slug":"la-blockchain","status":"publish","type":"post","link":"https:\/\/albertovr.com\/blog\/la-blockchain\/","title":{"rendered":"La Blockchain"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Explicamos brevemente qu\u00e9 es la tecnolog\u00eda blockchain, c\u00f3mo funciona y c\u00f3mo su uso se est\u00e1 ampliando a distintos mercados.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La blockchain generalmente se asocia con el&nbsp;<a href=\"https:\/\/www.welivesecurity.com\/la-es\/2017\/07\/28\/claves-potencia-del-bitcoin\/\" target=\"_blank\" rel=\"noreferrer noopener\">Bitcoin<\/a>&nbsp;y otras&nbsp;<a href=\"https:\/\/www.welivesecurity.com\/la-es\/2018\/03\/16\/test-cuanto-sabes-de-bitcoin-blockchain-criptomonedas\/\" target=\"_blank\" rel=\"noreferrer noopener\">criptomonedas<\/a>, pero estas son solo la punta del iceberg. &nbsp;Y es que esta tecnolog\u00eda, que tiene sus or\u00edgenes en 1991, cuando Stuart Haber y W. Scott Stornetta describieron el primer&nbsp;<a href=\"https:\/\/link.springer.com\/article\/10.1007\/BF00196791\">trabajo<\/a>&nbsp;sobre una cadena de bloques asegurados criptogr\u00e1ficamente, no fue notoria hasta 2008, cuando se hizo popular con la llegada del bitcoin. Pero actualmente su utilizaci\u00f3n est\u00e1 siendo demandada en otras aplicaciones comerciales y se proyecta un crecimiento anual del 51% para el 2022 en varios mercados, como el de las instituciones financieras o el de Internet de las Cosas (IoT), seg\u00fan public\u00f3&nbsp;<a href=\"https:\/\/www.marketwatch.com\/amp\/story\/guid\/97f0d270-97d4-4fa4-a024-2a230853b614\" target=\"_blank\" rel=\"noreferrer noopener\">MarketWatch<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Qu\u00e9 es blockchain<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La cadena de bloques, m\u00e1s conocida por el t\u00e9rmino en ingl\u00e9s blockchain, es un registro \u00fanico, consensuado y distribuido en varios nodos de una red. En el caso de las criptomonedas, podemos pensarlo como el libro contable donde se registra cada una de las transacciones.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Su funcionamiento puede resultar complejo de entender si profundizamos en los detalles internos de su implementaci\u00f3n, pero la idea b\u00e1sica es sencilla de seguir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En cada bloque se almacena:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>una cantidad de registros o transacciones v\u00e1lidas,<\/li><li>informaci\u00f3n referente a ese bloque,<\/li><li>su vinculaci\u00f3n con el bloque anterior y el bloque siguiente a trav\u00e9s del&nbsp;<a href=\"https:\/\/www.welivesecurity.com\/la-es\/glosario\/#glossary-66\" target=\"_blank\" rel=\"noreferrer noopener\">hash<\/a>&nbsp;de cada bloque \u2500un c\u00f3digo \u00fanico que ser\u00eda como la huella digital del bloque.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Por lo tanto,&nbsp;<strong>cada bloque tiene un lugar espec\u00edfico e inamovible dentro de la cadena<\/strong>, ya que cada bloque contiene informaci\u00f3n del hash del bloque anterior. La cadena completa se guarda en cada nodo de la red que conforma la blockchain, por lo que&nbsp;<strong>se almacena una copia exacta de la cadena en todos los participantes de la red<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A medida que se crean nuevos registros, estos son primeramente verificados y validados por los nodos de la red y luego a\u00f1adidos a un nuevo bloque que se enlaza a la cadena.<a href=\"https:\/\/www.welivesecurity.com\/wp-content\/uploads\/2018\/09\/esquema-blockchain.png\"><\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esquema de la cadena de bloques.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u00bfPor qu\u00e9 blockchain es tan segura?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Al ser una tecnolog\u00eda distribuida, donde&nbsp;<strong>cada nodo de la red almacena una copia exacta de la cadena<\/strong>,&nbsp;<strong>se garantiza la disponibilidad de la informaci\u00f3n en todo momento<\/strong>. En caso de que un atacante quisiera provocar una denegaci\u00f3n de servicio, deber\u00eda anular todos los nodos de la red, ya que basta con que al menos uno est\u00e9 operativo para que la informaci\u00f3n est\u00e9 disponible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por otro lado, al ser un registro consensuado, donde todos los nodos contienen la misma informaci\u00f3n, resulta casi imposible alterar la misma, asegurando su integridad. Si un atacante quisiera modificar la informaci\u00f3n en la cadena de bloques, deber\u00eda modificar la cadena completa en al menos el 51% de los nodos.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>la tecnolog\u00eda de blockchain nos permite almacenar informaci\u00f3n que jam\u00e1s se podr\u00e1 perder, modificar o eliminar<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Por \u00faltimo, dado que cada bloque est\u00e1 matem\u00e1ticamente vinculado al bloque siguiente, una vez que se a\u00f1ade uno nuevo a la cadena, el mismo se vuelve inalterable. Si un bloque se modifica su relaci\u00f3n con la cadena se rompe. Es decir, que toda la informaci\u00f3n registrada en los bloques es inmutable y perpetua.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De esta forma la tecnolog\u00eda de blockchain nos permite almacenar informaci\u00f3n que jam\u00e1s se podr\u00e1 perder, modificar o eliminar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Adem\u00e1s, cada nodo de la red utiliza certificados y firmas digitales para verificar la informaci\u00f3n y validar las transacciones y los datos almacenados en la blockchain, lo que permite asegurar la autenticidad de dicha informaci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De esta forma, podemos pensar en blockchain como un escribano. Un medio para certificar y validar cualquier tipo de informaci\u00f3n. Un registro confiable, descentralizado, resistente a la manipulaci\u00f3n de datos, y donde queda todo registrado.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En la actualidad estamos acostumbrados a los modelos centralizados. Le damos toda nuestra informaci\u00f3n a empresas como Google o Facebook para que la administren, mandamos todos nuestros mensajes a trav\u00e9s de los servidores de Telegram o WhatsApp para que se ocupen de enviarlos o gastamos fortunas en escribanos e instituciones para que certifiquen y guarden nuestras escrituras o documentos importantes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En blockchain los datos est\u00e1n distribuidos en todos los nodos de la red. Al no haber un nodo central, todos participan por igual, almacenando y validando toda la informaci\u00f3n. Se trata de una herramienta muy potente para comunicarnos y almacenar informaci\u00f3n de forma confiable; un modelo descentralizado donde la informaci\u00f3n es nuestra, ya que no dependemos de una compa\u00f1\u00eda que brinde el servicio.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u00bfQu\u00e9 otros usos se le da a blockchain?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e1sicamente,&nbsp;<strong>cualquier tipo de informaci\u00f3n que necesite ser preservada de forma intacta y que deba permanecer disponible puede ser almacenada en blockchain de manera segura<\/strong>, descentralizada y m\u00e1s econ\u00f3mica que a trav\u00e9s de intermediarios. Adem\u00e1s, si esa informaci\u00f3n se guarda cifrada se puede garantizar su confidencialidad, ya que solo quien cuente con la llave de cifrado pueda acceder a ella.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Uso de blockchain en la salud<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Por ejemplo, los registros de salud podr\u00edan ser unificados y almacenados en blockchain. De esta forma, la historia m\u00e9dica de cada paciente estar\u00eda segura y a la vez disponible para cada m\u00e9dico autorizado, independientemente del centro de salud donde se haya atendido el paciente. Incluso la industria farmac\u00e9utica puede utilizar esta tecnolog\u00eda para verificar medicamentos y evitar falsificaciones.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Uso de blockchain para documentos<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Por otro lado, resultar\u00eda muy \u00fatil para la gesti\u00f3n de bienes y documentos digitales. Hasta ahora el problema de lo digital es que todo es f\u00e1cil de copiar, pero blockchain permite registrar compras, escrituras, documentos o cualquier tipo de bien digital y que no pueda ser falsificado.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Otros usos del blockchain<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tambi\u00e9n puede&nbsp;<a href=\"https:\/\/www.welivesecurity.com\/la-es\/2018\/02\/23\/dispositivos-protegidos-blockchain-recuperarse-privacidad-seguridad-por-diseno\/\" target=\"_blank\" rel=\"noreferrer noopener\">revolucionar el mercado de Internet de las Cosas<\/a>&nbsp;(IoT), donde el reto recae en los millones de dispositivos conectados a Internet que deben ser gestionados por las empresas proveedoras. En unos a\u00f1os, el modelo centralizado no va a soportar tantos dispositivos, sin contar que muchos de ellos no son lo suficientemente seguros. Con blockchain los dispositivos pueden comunicarse a trav\u00e9s de la red de manera directa, segura y confiable, sin intermediarios.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Blockchain permite verificar, validar, rastrear y almacenar todo tipo de informaci\u00f3n, desde certificados digitales, sistemas de votaci\u00f3n democr\u00e1ticos, servicios de log\u00edstica y mensajer\u00eda, contratos inteligentes y, por supuesto dinero y transacciones financieras.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Actualmente, ya existen proyectos vigentes que vale la pena investigar:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.hyperledger.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">HyperLedger Project<\/a><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Se trata de un consorcio de grandes empresas que buscan explorar soluciones basadas en blockchain. Cuentan con varios proyectos activos.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.r3.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">R3 Cev<\/a><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">En este caso, los 40 bancos m\u00e1s grandes del mundo se han unido para buscar soluciones a sus procesos financieros basadas en blockchain. Adem\u00e1s, cuentan con informes e investigaciones de esta tecnolog\u00eda.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/storj.io\/\" target=\"_blank\" rel=\"noreferrer noopener\">Storj<\/a><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">La primera iniciativa de almacenamiento basada en blockchain y disponible para cualquier persona. Los datos de los usuarios son cifrados y almacenados en blockchain para su preservaci\u00f3n.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/proofofexistence.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Proof of Existence<\/a><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Un servicio de certificaci\u00f3n online de cualquier tipo de documentos. Ofrece la posibilidad de guardar un documento en blockchain, el cual jam\u00e1s podr\u00e1 ser alterado ni eliminado.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Seg\u00fan una encuesta de la consultora Deloitte, el&nbsp;<strong>74% de las empresas consultadas ven en blockchain una mejora para el negocio y planean invertir en esta tecnolog\u00eda<\/strong>, mientras que casi la mitad de estas ya cuentan con alguna implementaci\u00f3n de blockchain en su negocio.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sin dudas blockchain hace realidad la capa inmutable y descentralizada con la que Internet siempre ha so\u00f1ado. Una tecnolog\u00eda que permite eliminar la confianza de la ecuaci\u00f3n y reemplazarla por verdad matem\u00e1tica.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Quiz\u00e1s te interese:&nbsp;<a href=\"https:\/\/www.welivesecurity.com\/la-es\/2019\/04\/02\/blockchain-problemas-seguridad-alrededor-tecnologia\/\" target=\"_blank\" rel=\"noreferrer noopener\">Blockchain: problemas de seguridad que giran alrededor de esta tecnolog\u00eda<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Explicamos brevemente qu\u00e9 es la tecnolog\u00eda blockchain, c\u00f3mo funciona y c\u00f3mo su uso se est\u00e1 ampliando a distintos mercados. La blockchain generalmente se asocia con el&nbsp;Bitcoin&nbsp;y otras&nbsp;criptomonedas, pero estas son solo la punta del iceberg. &nbsp;Y es que esta tecnolog\u00eda, que tiene sus or\u00edgenes en 1991, cuando Stuart Haber y W. Scott Stornetta describieron el [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":329,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":4,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","_editorskit_typography_data":[],"_editorskit_blocks_typography":"","content-type":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4],"tags":[],"class_list":["post-326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-informatica"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La Blockchain - Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/albertovr.com\/blog\/la-blockchain\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La Blockchain - Blog\" \/>\n<meta property=\"og:description\" content=\"Explicamos brevemente qu\u00e9 es la tecnolog\u00eda blockchain, c\u00f3mo funciona y c\u00f3mo su uso se est\u00e1 ampliando a distintos mercados. 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