{"id":3681,"date":"2021-06-25T07:34:22","date_gmt":"2021-06-24T21:34:22","guid":{"rendered":"http:\/\/irisherself.com\/blog\/?p=3681"},"modified":"2021-11-17T15:24:05","modified_gmt":"2021-11-17T04:24:05","slug":"blockchains","status":"publish","type":"post","link":"https:\/\/irisherself.com\/blog\/blockchains\/","title":{"rendered":"Chain my hash#"},"content":{"rendered":"\n<p id=\"Blockchain\">[This post is a note to <a href=\"https:\/\/medium.com\/swlh\/is-it-hard-to-build-a-blockchain-from-scratch-2662e9b873b7\" data-type=\"URL\" data-id=\"https:\/\/medium.com\/swlh\/is-it-hard-to-build-a-blockchain-from-scratch-2662e9b873b7\" target=\"_blank\" rel=\"noreferrer noopener\">self<\/a>] &#8211; Blockchains are a type of ledger. Coin &#8220;miners&#8221; make calculations and add messages to the blockchain over time. The messages are hashed to protect the ordering and contents of messages. These hash ledgers are (allegedly!) tamper-resistant as the contents of later entries depend on the contents of earlier entries. <\/p>\n\n\n\n<p id=\"Blockchain\">The novelty (in comparison to conventional dbs) is that it is a distributed system with no owner. This is what enthusiasts mean when they say that the blockchain is&nbsp;<strong>trustless<\/strong>: instead of central authority, like a bank, many miners compete to successfully write a new message to the blockchain. They do this by means of a&nbsp;<strong>proof-of-work algorithm<\/strong>, each with their own copy of the ledger.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><a href=\"https:\/\/irisherself.com\/blog\/wp-content\/uploads\/2021\/06\/blockchain_dia2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"590\" height=\"460\" src=\"https:\/\/irisherself.com\/blog\/wp-content\/uploads\/2021\/06\/blockchain_dia2.png\" alt=\"Blockchains capture the previous digest and the current message to produce another digest.\" class=\"wp-image-3690\" srcset=\"https:\/\/irisherself.com\/blog\/wp-content\/uploads\/2021\/06\/blockchain_dia2.png 590w, https:\/\/irisherself.com\/blog\/wp-content\/uploads\/2021\/06\/blockchain_dia2-300x234.png 300w\" sizes=\"auto, (max-width: 590px) 100vw, 590px\" \/><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Wee blurb about Blockchains and Bitcoin<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,39],"tags":[16,26],"class_list":["post-3681","post","type-post","status-publish","format-standard","hentry","category-general-stuff","category-wearedb","tag-performance-philosophy","tag-the-naked-emperor"],"_links":{"self":[{"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/posts\/3681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/comments?post=3681"}],"version-history":[{"count":10,"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/posts\/3681\/revisions"}],"predecessor-version":[{"id":3758,"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/posts\/3681\/revisions\/3758"}],"wp:attachment":[{"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/media?parent=3681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/categories?post=3681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/irisherself.com\/blog\/wp-json\/wp\/v2\/tags?post=3681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}