{"id":6379,"date":"2021-02-16T02:21:20","date_gmt":"2021-02-16T02:21:20","guid":{"rendered":"https:\/\/cointelegraph.com\/news\/verge-of-disaster-200-days-transactions-wiped-from-blockchain"},"modified":"2021-02-16T02:21:20","modified_gmt":"2021-02-16T02:21:20","slug":"verge-of-disaster-200-days-transactions-wiped-from-blockchain","status":"publish","type":"post","link":"https:\/\/www.buyucoin.com\/crypto-labs\/verge-of-disaster-200-days-transactions-wiped-from-blockchain\/","title":{"rendered":"Verge of disaster: 200 days transactions wiped from blockchain"},"content":{"rendered":"<p>Privacy-focused blockchain network Verge (<a href=\"https:\/\/www.coingecko.com\/en\/coins\/verge\" target=\"_blank\" rel=\"noopener nofollow\">XVG<\/a>) has experienced a <a href=\"https:\/\/cointelegraph.com\/news\/privacy-focused-firo-cryptocurrency-suffers-51-attack\">significant block reorganization<\/a>, replacing transactions dating as far back as July 2020.<\/p>\n<p>Despite being <a href=\"https:\/\/twitter.com\/LucasNuzzi\/status\/1361392168989036545?s=20\" target=\"_blank\" rel=\"noopener nofollow\">described<\/a> as potentially \u201cthe deepest reorg that has ever taken place in a top 100 cryptocurrency,\u201d analysts are yet to confirm that the incident comprised a coordinated attack.<\/p>\n<p>Coinmetrics COO Antoine Le Calvez was one of the first to notice the reorg, sharing a <a href=\"https:\/\/twitter.com\/khannib\/status\/1361355703655538690?s=20\" target=\"_blank\" rel=\"noopener nofollow\">screenshot<\/a> on Twitter showing that at least 560,000 blocks had disappeared on February 15.<\/p>\n<blockquote class=\"twitter-tweet\">\n<p lang=\"en\" dir=\"ltr\">Looks like <a href=\"https:\/\/twitter.com\/search?q=%24XVG&amp;src=ctag&amp;ref_src=twsrc%5Etfw\">$XVG<\/a> (Verge) experienced a massive 560k+ blocks reorg.<a href=\"https:\/\/twitter.com\/coinmetrics?ref_src=twsrc%5Etfw\">@coinmetrics<\/a>&#8216; node is on a new chain whose last common ancestor with the previous chain dates to July 2020.<\/p>\n<p>\u2014 Antoine Le Calvez (@khannib) <a href=\"https:\/\/twitter.com\/khannib\/status\/1361355699209568258?ref_src=twsrc%5Etfw\">February 15, 2021<\/a><\/p><\/blockquote>\n<p>Le Calvez suggested the reorg could have been caused by a double-spend, in which a number of XVG tokens are used simultaneously for two separate transactions. However, due to the magnitude of the incident, Calvez <a href=\"https:\/\/twitter.com\/khannib\/status\/1361362236531503105?s=20\" target=\"_blank\" rel=\"noopener nofollow\">admitted<\/a> it will take some time for developers to comb through the data to establish the exactsource of the reorg.<\/p>\n<p>As a result of this roll-back, any user who received or purchased XVG tokens since July 2020 may have lost their entire balance, with Deribit Insights\u2019 researcher \u201cHasu\u201d <a href=\"https:\/\/twitter.com\/hasufl\/status\/1361408353658933254?s=20\" target=\"_blank\" rel=\"noopener nofollow\">tweeting<\/a> that \u201cthousands of balances have simply evaporated.\u201d One Verge investor <a href=\"https:\/\/twitter.com\/ShitcoinSloth\/status\/1361402335071670272?s=20\" target=\"_blank\" rel=\"noopener nofollow\">tweeted<\/a> that their wallet balance is now empty after the attack. <\/p>\n<p>Despite the scale of the potential attack, Hasu believes it will be \u201cpretty easy to counter,&#8221; advancing that &#8220;nodes will reject the attacker\u2019s chain and restore the previous one.\u201d Hasu stated the incident highlights the <a href=\"https:\/\/twitter.com\/hasufl\/status\/1361408355202383881\" target=\"_blank\" rel=\"noopener nofollow\">vulnerability <\/a>of blockchains supported by GPU mining. <\/p>\n<p>This isn\u2019t the first time a reorg has been suggested to fend off would-be attackers, with Hasu referencing back to 2019 when Vertcoin <a href=\"https:\/\/insights.deribit.com\/market-research\/vertcoins-51-attack-a-case-study-for-blockchain-security\/\" target=\"_blank\" rel=\"noopener nofollow\">succumbed<\/a> to a 51% attack. The same year, after major exchange Binance was hacked for more than $40 million, founder and CEO Changpeng Zhao floated the idea of <a href=\"https:\/\/cointelegraph.com\/news\/binance-ceo-addresses-concerns-live-after-40-mln-btc-hack-rejects-blockchain-reorg-idea\">conducting a Bitcoin reorg<\/a> to recover the funds, however, the idea was quickly decided against.<\/p>\n<p>An unconfirmed screenshot shared by Twitter user <a href=\"https:\/\/twitter.com\/etn_electroneum\/status\/1361421566664347650?s=20\" target=\"_blank\" rel=\"noopener nofollow\">@etn_electroneum<\/a> showed XVG advisor AlexanDre stating the source is linked to some nodes who wanted to create a fork. He also added that there was not a 51% attack.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/s3.cointelegraph.com\/uploads\/2021-02\/421ed63a-9c57-4c1a-82ad-3c336261d1ce.jpg\"><figcaption>XVG advisor AlexanDre telegram announcement on Verge reorg. Source: <a href=\"https:\/\/twitter.com\/etn_electroneum\/status\/1361421566664347650?s=20\" target=\"_blank\" rel=\"noopener nofollow\">Twitter<\/a><\/figcaption><\/figure>\n<p>In the last six hours, XVG has dropped by almost 15% to $0.0224. This has resulted in it moving out of the top 100, according to <a href=\"https:\/\/www.coingecko.com\/en\/coins\/verge\" target=\"_blank\" rel=\"noopener nofollow\">Coingecko<\/a>. Verge\u2019s <a href=\"https:\/\/verge-blockchain.info\/\" target=\"_blank\" rel=\"noopener nofollow\">explorer<\/a> is still down.<\/p>\n<p>Privacy-focused blockchain network Verge (<a href=\"https:\/\/www.coingecko.com\/en\/coins\/verge\" target=\"_blank\" rel=\"noopener nofollow\">XVG<\/a>) has experienced a <a href=\"https:\/\/cointelegraph.com\/news\/privacy-focused-firo-cryptocurrency-suffers-51-attack\">significant block reorganization<\/a>, replacing transactions dating as far back as July 2020.<\/p>\n<p><a href=\"https:\/\/cointelegraph.com\/news\/verge-of-disaster-200-days-transactions-wiped-from-blockchain\">Source: COINTELEGRAPH<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Privacy-focused blockchain network Verge (XVG) has experienced a significant block reorganization, replacing transactions dating as far back as July 2020. Despite being described as potentially \u201cthe deepest reorg that has ever taken place in a top 100 cryptocurrency,\u201d analysts are yet to confirm that the incident comprised a coordinated attack. Coinmetrics COO Antoine Le Calvez&hellip;<\/p>\n","protected":false},"author":1,"featured_media":6380,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[560,562,25,561,558,559],"class_list":["post-6379","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-daily-crypto-news","tag-51-attack","tag-blockchain-attack","tag-news","tag-reorg","tag-verge","tag-xvg"],"_links":{"self":[{"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/posts\/6379"}],"collection":[{"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/comments?post=6379"}],"version-history":[{"count":0,"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/posts\/6379\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/media\/6380"}],"wp:attachment":[{"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/media?parent=6379"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/categories?post=6379"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.buyucoin.com\/crypto-labs\/wp-json\/wp\/v2\/tags?post=6379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}