{"id":542376,"date":"2023-01-23T05:57:26","date_gmt":"2023-01-23T02:57:26","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/vitalik-buterin-divulges-the-largest-remaining-challenge-in-ethereum\/"},"modified":"2023-01-23T05:57:26","modified_gmt":"2023-01-23T02:57:26","slug":"vitalik-buterin-divulges-the-largest-remaining-challenge-in-ethereum","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/vitalik-buterin-divulges-the-largest-remaining-challenge-in-ethereum\/","title":{"rendered":"# Vitalik Buterin divulges the &#8216;largest remaining challenge&#8217; in Ethereum"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a36ead32c5bf\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a36ead32c5bf\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/vitalik-buterin-divulges-the-largest-remaining-challenge-in-ethereum\/#%E2%80%9D_Vitalik_Buterin_divulges_the_%E2%80%98largest_remaining_challenge_in_Ethereum_%E2%80%9C\" >&#8221; Vitalik Buterin divulges the &#8216;largest remaining challenge&#8217; in Ethereum &#8220;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9D_Vitalik_Buterin_divulges_the_%E2%80%98largest_remaining_challenge_in_Ethereum_%E2%80%9C\"><\/span>&#8221; Vitalik Buterin divulges the &#8216;largest remaining challenge&#8217; in Ethereum &#8220;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div class=\"post-content\" data-v-5a4050f8>Ethereum co-founder Vitalik Buterin has shared a possible solution to what he describes as the \u201clargest remaining challenge\u201d on Ethereum \u2014 privacy.<\/p>\n<p>In a blog <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/vitalik.ca\/general\/2023\/01\/20\/stealth.html\">post<\/a> on Jan. 20, Buterin acknowledged the need to come up with a privacy solution because by default, all information that goes onto a \u201cpublic blockchain\u201d is public too.<\/p>\n<p>He then arrived at the concept of \u201cstealth addresses\u201d \u2014 which he said can potentially anonymize peer-to-peer transactions, nonfungible token (NFT) transfers, and Ethereum Name Service (ENS) registrations, protecting users.\u00a0<\/p>\n<blockquote class=\"twitter-tweet\">\n<p lang=\"en\" dir=\"ltr\">An incomplete guide to stealth addresses:<a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/t.co\/21Q18BrD30\">https:\/\/t.co\/21Q18BrD30<\/a><\/p>\n<p>\u2014 vitalik.eth (@VitalikButerin) <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/twitter.com\/VitalikButerin\/status\/1616527030790623233?ref_src=twsrc%5Etfw\">January 20, 2023<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>In the blog post, Buterin explained how on-chain transactions can be carried out between two parties with anonymity.\u00a0<\/p>\n<p>Firstly, a user looking to receive assets will generate and keep a \u201cspending key\u201d which is then used to generate a stealth meta-address. <\/p>\n<p>This address \u2014 which can be registered on ENS \u2014 is then passed onto the sender who can perform a cryptographic computation on the meta-address to generate a stealth address, which belongs to the receiver.\u00a0<\/p>\n<p>The sender can then transfer assets to the receiver&#8217;s stealth address in addition to publishing a temporary key to confirm that the stealth address belongs to the receiver.\u00a0<\/p>\n<p>The effect of this is that a new stealth address is generated for each new transaction.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/s3.cointelegraph.com\/uploads\/2023-01\/0e8bf7a4-e1db-4a25-8ad4-ce27f4983d25.jpg\"><figcaption style=\"text-align: center;\"><em>Vitalik Buterin\u2019s stick figure diagram of how a stealth address system may work. Source: <\/em><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/vitalik.ca\/general\/2023\/01\/20\/stealth.html\"><em>Vitalik.ca.<\/em><\/a><\/figcaption><\/figure>\n<p>Buterin noted that a &#8220;Diffie-Hellman key exchange&#8221; in addition to a \u201ckey blinding mechanism\u201d would need to be implemented to ensure that the link between the stealth address and the user&#8217;s meta-address can&#8217;t be seen publicly.<\/p>\n<p>The Ethereum co-founder added that ZK-SNARKs \u2014 a cryptographic-proof <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">technology<\/a> with built-in privacy features \u2014 could transfer funds to pay transaction fees. <\/p>\n<p>However Buterin emphasized that this may lead to problems of its own \u2014 at least for the short term \u2014 stating \u201cthis costs a lot of gas, an extra hundreds of thousands of gas just for a single transfer.\u201d<\/p>\n<p><strong><em>Related: <\/em><\/strong><strong><em>Crypto privacy is in greater jeopardy than ever before \u2014 here&#8217;s why<\/em><\/strong><\/p>\n<p>Stealth addresses have long been touted as a solution to address on-chain privacy issues, which have been worked on since as early as 2014. However very few solutions have been brought to market thus far.<\/p>\n<p>It also isn\u2019t the first time Buterin has discussed the concept of stealth addresses in Ethereum. <\/p>\n<p>In August 2022, he dubbed stealth addresses as a \u201clow-tech <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>roach\u201d to anonymously transfer ownership of ERC-721 tokens \u2014 otherwise known as NFTs.<\/p>\n<p>The Ethereum co-founder explained that the stealth address concept proposed offers privacy differently to that of the now U.S. Office of Foreign Asset Control (OFAC)-sanctioned Tornado Cash:<\/p>\n<blockquote><p>\u201dTornado Cash can hide transfers of mainstream fungible assets such as ETH or major ERC20s [&#8230;] but it&#8217;s very weak at adding privacy to transfers of obscure ERC20s, and it cannot add privacy to NFT transfers at all.\u201d<\/p><\/blockquote>\n<p>Buterin offered some advice to Web3 projects that are developing a solution:<\/p>\n<blockquote><p>\u201cBasic stealth addresses can be implemented fairly quickly today, and could be a significant boost to practical user privacy on Ethereum.&#8221;<\/p><\/blockquote>\n<p>&#8220;They do require some work on the wallet side to support them. That said, it is my view that wallets should start moving toward a more natively multi-address model [&#8230;] for other privacy-related reasons as well,&#8221; he adde<\/p>\n<p>Buterin suggested that stealth addresses may introduce \u201clonger-term usability concerns,\u201d such as <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/social-mediaa\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Social Media\" target=\"_blank\" rel=\"noopener\">social<\/a> recovery issues. However, he is confident the problems can be properly addressed over the long-term:<\/p>\n<p>\u201cIn the longer term, these problems can be solved, but the stealth address ecosystem of the long term is looking like one that would really heavily depend on zero-knowledge proofs,\u201d he explained.<\/p>\n<p><template data-name=\"subscription_form\" data-type=\"crypto_biz\"><\/template><\/div>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong>\n<\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">News<\/a> articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/general\/\" target=\"_blank\" rel=\"noopener\">General category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/cointelegraph.com\/news\/vitalik-buterin-divulges-the-largest-remaining-challenge-in-ethereum\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8221; Vitalik Buterin divulges the &#8216;largest remaining challenge&#8217; in Ethereum &#8220; Ethereum co-founder Vitalik Buterin has shared a possible solution to what he describes as the \u201clargest remaining challenge\u201d on Ethereum \u2014 privacy. In a blog post on Jan. 20, Buterin acknowledged the need to come up with a privacy solution because by default, all&#8230;<\/p>\n","protected":false},"author":1,"featured_media":542377,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/images.cointelegraph.com\/cdn-cgi\/image\/format=auto,onerror=redirect,quality=90,width=1200\/https:\/\/s3.cointelegraph.com\/uploads\/2023-01\/008b9e95-eb37-4ded-aa8b-b5a810d9af0f.jpg","fifu_image_alt":"","footnotes":""},"categories":[1],"tags":[15047,138771,74894,107453,74868,115707,74891,95118,80098,75995,74355,117],"class_list":["post-542376","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-privacy","tag-addressing-system","tag-blockchain","tag-blog","tag-defi","tag-ens","tag-ethereum","tag-nft","tag-private-keys","tag-vitalik-buterin","tag-adoption","tag-business"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/542376","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=542376"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/542376\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/542377"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=542376"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=542376"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=542376"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}