{"id":3985,"date":"2020-08-30T04:28:18","date_gmt":"2020-08-30T01:28:18","guid":{"rendered":"https:\/\/alfacash.blog\/?p=3985"},"modified":"2024-02-19T21:53:20","modified_gmt":"2024-02-19T18:53:20","slug":"maniquies-que-es-blockchain-como-funciona","status":"publish","type":"post","link":"https:\/\/alfacash.blog\/es\/2020\/08\/30\/maniquies-que-es-blockchain-como-funciona\/","title":{"rendered":"Para tontos: \u00bfqu\u00e9 es una cadena de bloques y c\u00f3mo funciona?"},"content":{"rendered":"<p>Blockchain y m\u00e1s blockchain! Actualmente es un t\u00e9rmino com\u00fan, casi una moda en las esferas corporativas. Todos quieren algo con blockchain, incluso si no saben exactamente qu\u00e9 es un &quot;blockchain&quot;. Algo sobre las criptomonedas, \u00bfverdad? Algo as\u00ed como una nueva super-tecnolog\u00eda-cosaamajig, \u00bfverdad\u2026?<\/p>\n\n\n\n<p>No exactamente, amigo m\u00edo. Entonces, podemos comenzar a indicar qu\u00e9 NO es una cadena de bloques y para qu\u00e9 NO es:<\/p>\n\n\n\n<p><strong>* Blockchain no es una criptomoneda.<br>* Blockchain no es una plataforma de inversi\u00f3n.<br>* Blockchain no es la plataforma de c\u00f3digo abierto m\u00e1s grande.<br>* Blockchain puede no ser un sistema distribuido.<br>* Blockchain puede no ser un <em>descentralizado<\/em> sistema.<br>* Blockchain no es m\u00e1gico.<br>* Blockchain no puede resolver todos tus problemas.<br>* Blockchain no puede aumentar sus ganancias de ninguna manera.<br>&nbsp;<\/strong><\/p>\n\n\n\n<p>\u00bfTodo claro? Entonces, podemos comenzar <a href=\"https:\/\/alfacash.blog\/2020\/08\/19\/good-news-read-learn-ask-new-blog-crypto\/\">aprender<\/a> qu\u00e9 es realmente una \u201ccadena de bloques\u201d y cu\u00e1l es su prop\u00f3sito en el universo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Una cadena de bloques es ...<\/strong><\/h2>\n\n\n\n<p><strong>Esta cosa no es m\u00e1s que un libro de contabilidad en una versi\u00f3n encriptada digitalmente.<\/strong> \u00bfSuena aburrido? Bueno, es un poco aburrido, para ser honesto. \u00bfD\u00f3nde est\u00e1 la magia ah\u00ed? \u00bfPor qu\u00e9 todo el mundo est\u00e1 tan emocionado? \u00bfY por qu\u00e9 esto tiene algo que ver? <a href=\"https:\/\/alfacash.blog\/2020\/08\/18\/what-is-cryptocurrency-why-should-care-reasons\/\">con criptomonedas?<\/a> D\u00e9janos explicarte.<\/p>\n\n\n\n<p>Hace doce a\u00f1os, la persona (o grupo de personas) conocida como Satoshi Nakamoto estaba tratando de resolver el problema del doble gasto en efectivo digital de una manera desconfiada. \u00a1Okay! Podemos frenar un poco. El doble gasto es, b\u00e1sicamente, gastar el mismo dinero digital m\u00e1s de una vez (como deber\u00eda ser). Ya sabes, puedes copiar y pegar casi todo en Internet, \u00bfpor qu\u00e9 no el dinero?<\/p>\n\n\n\n<p>Para evitar este tipo de comportamiento, hemos confiado en instituciones centralizadas, como bancos y gobiernos. Una vez que env\u00eda una transferencia bancaria electr\u00f3nica, el sistema del banco descuenta ese dinero de su cuenta. Si no estuvieran all\u00ed, probablemente la gente gastar\u00eda el mismo dinero varias veces. Y eso es como un robo.<\/p>\n\n\n\n<p>Entonces, <strong>Satoshi estaba pensando en un sistema autom\u00e1tico para reemplazar estas instituciones centralizadas. <\/strong>y hacer posible tener efectivo digital sin el problema del doble gasto al mismo tiempo. Luego tom\u00f3 una especie de base de datos criptogr\u00e1fica (encriptada) experimental creada en los a\u00f1os 70 y la mezcl\u00f3 con otros elementos tecnol\u00f3gicos para crear la primera moneda digital descentralizada sin un problema de doble gasto. \u00a1Y Bitcoin naci\u00f3 en 2009!<\/p>\n\n\n\n<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"681\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-1024x681.jpg\" alt=\"\" class=\"wp-image-3989\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-1024x681.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-300x199.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-270x180.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-770x512.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-764x508.jpg 764w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-775x515.jpg 775w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-370x246.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-554x368.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-306x203.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280-87x58.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-2643159_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Imagen de Gerd Altmann \/ Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n<p>Esta base de datos criptogr\u00e1fica experimental es la famosa cadena de bloques, a pesar de que nadie la conoc\u00eda en ese entonces. Ni siquiera Satoshi: vino el nombre <a href=\"https:\/\/alfacash.blog\/2020\/08\/22\/bitcoin-to-the-moon-5-predictions-for-2021-and-beyond\/\">despu\u00e9s de Bitcoin<\/a>. \u00bfPor qu\u00e9 no una &quot;base de datos criptogr\u00e1fica&quot; o algo as\u00ed, en lugar de &quot;blockchain&quot;? Bueno, es porque la base de datos es en realidad ... una cadena de bloques, como parece. Bloques digitales.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u00bfC\u00f3mo funcionan los bloques?<\/strong><\/h2>\n\n\n\n<p><strong>Cada &quot;bloque&quot; es un peque\u00f1o contenedor de datos<\/strong> (transacciones monetarias, en un caso de criptomonedas), encadenado a todos los dem\u00e1s (pasados y futuros) con algo llamado &quot;hashes&quot;. Estos son el resultado cifrado de pasar los datos a trav\u00e9s de un algoritmo complejo. Algo como esto (si usamos el <a href=\"https:\/\/passwordsgenerator.net\/sha256-hash-generator\/\">Algoritmo SHA256<\/a>):<\/p>\n\n\n\n<p>* Datos iniciales: ha transferido 1 BTC a Mike.<br>* Datos hash: 710DAEB54021CCD83046E4FA16106E4DC10E5D617E4C28F61CE29C29CFAE823E<\/p>\n\n\n\n<p>Cada hash representa una identidad \u00fanica para cada transacci\u00f3n y cada bloque (un grupo de transacciones) existente. Todas esas identidades se fusionan matem\u00e1ticamente m\u00e1s tarde entre s\u00ed, &quot;encaden\u00e1ndose&quot; de esa manera. Entonces, si alguien intenta hacer trampa, el hash de su transacci\u00f3n (la identidad \u00fanica) cambiar\u00e1; y si cambia, se desencadenar\u00e1 y dejar\u00e1 de ser v\u00e1lido autom\u00e1ticamente.<\/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\/08\/dominoes-1902622_1280-1024x682.jpg\" alt=\"\" class=\"wp-image-3991\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-1024x682.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-300x200.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-270x180.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-770x513.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-762x508.jpg 762w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-773x515.jpg 773w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-370x247.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-554x369.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-306x204.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-368x245.jpg 368w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280-87x58.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/dominoes-1902622_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Imagen de Christine Schmidt \/ Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n<p>Por ejemplo, recordemos nuestros datos iniciales (ha transferido 1 BTC a Mike). Si cambiamos incluso un peque\u00f1o car\u00e1cter all\u00ed, el hash tambi\u00e9n cambiar\u00e1 radicalmente:<\/p>\n\n\n\n<p>* Datos iniciales: ha transferido 2 BTC a Mike.<br>* Datos hash: 005002AC29AE0D1944110DB27CC73E9090F013B15207D84F2086B8646DAF549E<\/p>\n\n\n\n<p>La transacci\u00f3n ya no es v\u00e1lida y t\u00fa, pobre mortal, no puedes enga\u00f1ar al sistema blockchain. Incluso si las autoridades no est\u00e1n supervisando. Pero ahora, simulemos la &quot;fusi\u00f3n&quot; entre transacciones. Digamos que esos hashes son v\u00e1lidos y representan las identidades de dos bloques diferentes. <strong>\u00bfC\u00f3mo se encadenan entre s\u00ed? Hashing juntos, por supuesto.<\/strong> Como este:<\/p>\n\n\n\n<p>*Datos iniciales:<br>710DAEB54021CCD83046E4FA16106E4DC10E5D617E4C28F61CE29C29CFAE823E<br>005002AC29AE0D1944110DB27CC73E9090F013B15207D84F2086B8646DAF549E<br>* Datos hash: EDFE12B5DB008F6491BA671DBE6BA25BD89BD6445B5003E9B3789605DBD24AD8<\/p>\n\n\n\n<p>\u00a1Y eso es! Si desea cambiar algo y hacerlo v\u00e1lido, primero debe descifrar y cambiar todos los bloques existentes. Suerte con ello.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Una cadena de bloques no funciona sola<\/strong><\/h2>\n\n\n\n<p>A pesar de las matem\u00e1ticas, ese sofisticado libro mayor no puede funcionar por s\u00ed solo. Necesita los otros elementos que Satoshi le agreg\u00f3: una red distribuida de nodos (y personas), el algoritmo antes mencionado para encriptar transacciones y establecer las reglas para los validadores, las transacciones para gastar o \u201cmonedas\u201d y claves criptogr\u00e1ficas privadas y p\u00fablicas. Comprobemos r\u00e1pidamente uno por uno.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Red distribuida<\/strong> <\/h3>\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\/08\/smartphone-3947607_1280-1024x682.jpg\" alt=\"\" class=\"wp-image-3990\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-1024x682.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-300x200.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-270x180.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-770x513.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-762x508.jpg 762w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-773x515.jpg 773w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-370x247.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-554x369.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-306x204.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-368x245.jpg 368w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280-87x58.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/smartphone-3947607_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption><em>Imagen de Gerd Altmann \/ Pixabay <\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p>No son los bancos o los gobiernos, pero alguien deber\u00eda verificar las transacciones de alguna manera. Y, para los sistemas descentralizados (como la mayor\u00eda de las criptomonedas), esa ser\u00eda una red distribuida conformada por muchas personas en todo el mundo y sus computadoras y equipos (nodos). Especialmente los \u00faltimos.<\/p>\n\n\n\n<p>La cosa es, <strong>cada miembro de la red (conocido como <a href=\"https:\/\/alfacash.blog\/2020\/08\/25\/cryptocurrency-mining-dummies-how-works\/\">minero o validador<\/a>) tiene una copia de toda la cadena de bloques en su hardware<\/strong>, y su software especializado o equipo de miner\u00eda se encarga de verificar y mantener el registro de cada nueva transacci\u00f3n y acu\u00f1ar nuevas \u201cmonedas\u201d; siguiendo las reglas matem\u00e1ticas establecidas por el algoritmo del sistema. El resultado siempre debe ser el mismo para la mayor\u00eda de los validadores; de lo contrario, la transacci\u00f3n o el bloque no ser\u00e1n v\u00e1lidos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Un algoritmo de consenso <\/strong><\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-1024x768.jpg\" alt=\"\" class=\"wp-image-3992\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-1024x768.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-300x225.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-150x113.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-16x12.jpg 16w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-240x180.jpg 240w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-687x515.jpg 687w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-677x508.jpg 677w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-370x278.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-554x416.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-306x230.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-327x245.jpg 327w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-260x195.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280-87x65.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/enigma-441280_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Imagen de Tomasz Miko\u0142ajczyk \/ Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n<p>Podemos definir un algoritmo como un conjunto de pasos y m\u00e9todos que se construyen \u2014con matem\u00e1ticas\u2014 para lograr un resultado espec\u00edfico o resolver un problema. Hay muchos algoritmos por ah\u00ed y no todos funcionan para construir una cadena de bloques. Deben ser muy complejos y s\u00f3lidos, para mantener una alta seguridad y forzar las reglas entre los validadores.<\/p>\n\n\n\n<p><strong>Tampoco todas las criptomonedas o sistemas de cadena de bloques utilizan el mismo algoritmo.<\/strong> <a href=\"https:\/\/alfacash.blog\/2020\/08\/20\/how-buy-bitcoin-simple-steps-nice-recipe\/\">Bitcoin, por ejemplo<\/a>, usa SHA256 (el que usamos antes), pero Ethereum usa Ethash y Zcash usa Equihash. Son funciones matem\u00e1ticas diferentes, pero el prop\u00f3sito es el mismo: cifrar los datos. &nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Salidas de transacciones no gastadas (UTXO) <\/strong><\/h3>\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\/08\/bitcoin-4338837_1280-1024x682.jpg\" alt=\"\" class=\"wp-image-3993\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-1024x682.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-300x200.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-270x180.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-770x513.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-762x508.jpg 762w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-773x515.jpg 773w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-370x247.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-554x369.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-306x204.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-368x245.jpg 368w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280-87x58.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/bitcoin-4338837_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Imagen de Matthias Wewering \/ Pixabay <\/figcaption><\/figure><\/div>\n\n\n\n<p>Sabemos que el t\u00e9rmino suena dif\u00edcil, pero estas son las \u201cmonedas digitales\u201d o transacciones per se. Son como fragmentos de propiedad que funcionan para intercambiar con otras personas. Tambi\u00e9n puede compararlos con los billetes o centavos dentro de su billetera f\u00edsica.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Claves criptogr\u00e1ficas p\u00fablicas y privadas<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain.jpg\" alt=\"\" class=\"wp-image-3994\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain.jpg 1000w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-300x200.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-270x180.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-770x515.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-762x508.jpg 762w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-772x515.jpg 772w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-370x247.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-554x370.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-306x204.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-367x245.jpg 367w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/Private-and-public-keys-blockchain-87x58.jpg 87w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption>Imagen de IntelFreePress \/ Flickr<\/figcaption><\/figure><\/div>\n\n\n\n<p>Estas son claves matem\u00e1ticas que funcionan como direcciones para enviar y recibir fondos dentro de una cadena de bloques. <strong>La clave p\u00fablica es como un n\u00famero de cuenta bancaria:<\/strong> puedes compartirlo libremente para recibir dinero. La clave privada, por otro lado, funciona para &quot;firmar&quot; las transacciones y verificar al propietario real y su intenci\u00f3n de enviar los fondos. En otras palabras, una clave privada es como una contrase\u00f1a, y tanto la clave privada como la p\u00fablica forman una &quot;cuenta&quot; dentro de la criptomoneda o blockchain.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><br><strong>&quot;Blockchain&quot; no significa &quot;descentralizado&quot; siempre<\/strong><\/h2>\n\n\n\n<p>Como dijimos al principio, es posible que una cadena de bloques no se distribuya y no se descentralice. Despu\u00e9s de todo, es solo un libro de contabilidad criptogr\u00e1fico, y los dem\u00e1s elementos que funcionan con \u00e9l pueden cambiar seg\u00fan las necesidades de sus creadores.<\/p>\n\n\n\n<p>Satoshi Nakamoto fue la primera persona en usarlo con Bitcoin, pero <a href=\"https:\/\/github.com\/bitcoin\/bitcoin\">el c\u00f3digo fuente<\/a> porque este tipo de libro mayor est\u00e1 abierto al p\u00fablico. Se puede copiar, pegar, modificar e incluso vender. Por lo tanto, muchas personas (y empresas) de todo el mundo han estado probando esta tecnolog\u00eda para sus propios usos, incluso m\u00e1s all\u00e1 de las criptomonedas. Los bancos no est\u00e1n excluidos: les gusta usar blockchains para construir nuevas plataformas de pago. Y, como puede imaginar, estos no est\u00e1n descentralizados, sino totalmente controlados por la red institucional.<\/p>\n\n\n\n<p><strong>A veces, las cadenas de bloques no funcionan con redes distribuidas, solo con redes internas controladas<\/strong>. Este tipo de plataforma necesita permisos de usuario de los creadores, por lo que se denominan blockchains &quot;autorizados&quot; o privados. Por otro lado, las criptomonedas y plataformas como Bitcoin funcionan con redes descentralizadas. Eso los hace p\u00fablicos o &quot;sin permiso&quot;.<\/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>Todos quieren algo con blockchain, incluso si no saben exactamente qu\u00e9 es un &quot;blockchain&quot;. Entonces, \u00a1averig\u00fc\u00e9moslo!<\/p>","protected":false},"author":5,"featured_media":3747,"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":[43,86,44,56,87,72],"class_list":{"0":"post-3985","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-learn","8":"tag-bitcoin","9":"tag-blockchain","10":"tag-decentralization","11":"tag-how-to","12":"tag-ledger","13":"tag-mining"},"featured_image_src":"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/08\/What-is-a-blockchain-deep-inside.svg","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>For dummies: what is a blockchain and how it works? - alfa.cash blog<\/title>\n<meta name=\"description\" content=\"Everybody wants something with blockchain, even if they don\u2019t know exactly what a \u201cblockchain\u201d is. 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