{"id":2889,"date":"2021-11-25T10:54:00","date_gmt":"2021-11-25T09:54:00","guid":{"rendered":"http:\/\/10.24.225.70\/?p=2889"},"modified":"2026-04-20T22:57:50","modified_gmt":"2026-04-20T20:57:50","slug":"blockchain-and-gdpr-when-opportunities-and-challenges-meet","status":"publish","type":"post","link":"https:\/\/complior.se\/en\/blockchain-and-gdpr-when-opportunities-and-challenges-meet\/","title":{"rendered":"Blockchain and GDPR: When Opportunities and Challenges Meet"},"content":{"rendered":"<div class=\"wp-block-uagb-container uagb-block-1c95cc62 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-group blockera-block blockera-block-627ud4 is-vertical is-layout-flex wp-container-core-group-is-layout-fe9cc265 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns2889_b60da1-0b\"><a class=\"kb-button kt-button button kb-btn2889_1d9db5-ba kt-btn-size-standard kt-btn-width-type-auto kb-btn-global-fill  kt-btn-has-text-true kt-btn-has-svg-true  wp-block-kadence-singlebtn\" href=\"https:\/\/complior.se\/en\/resources\/\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_arrowLeft kt-btn-icon-side-left\"><svg viewbox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><line x1=\"19\" y1=\"12\" x2=\"5\" y2=\"12\"\/><polyline points=\"12 19 5 12 12 5\"\/><\/svg><\/span><span class=\"kt-btn-inner-text\">Tillbaka till resurser<\/span><\/a><\/div>\n\n\n\n<span class=\"kt-adv-heading2889_81f190-78 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_81f190-78\">Blog<\/span>\n\n\n\n<h1 class=\"kt-adv-heading2889_ed7771-06 animated fadeIn wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_ed7771-06\">Blockchain and GDPR: When Opportunities and Challenges Meet<\/h1>\n\n\n\n<div class=\"wp-block-group animated fadeIn is-nowrap is-layout-flex wp-container-core-group-is-layout-6c531013 wp-block-group-is-layout-flex\"><div class=\"publish-date-container\">\r\n\t<svg\r\n\t\twidth=\"16\"\r\n\t\theight=\"16\"\r\n\t\tviewbox=\"0 0 24 24\"\r\n\t\tfill=\"none\"\r\n\t\tstroke=\"#4b4b4b\"\r\n\t\tstroke-width=\"2\"\r\n\t\tstroke-linecap=\"round\"\r\n\t\tstroke-linejoin=\"round\"\r\n\t\txmlns=\"http:\/\/www.w3.org\/2000\/svg\"\r\n\t\taria-hidden=\"true\"\r\n\t>\r\n\t\t<rect x=\"3\" y=\"4\" width=\"18\" height=\"18\" rx=\"2\" ry=\"2\"><\/rect>\r\n\t\t<line x1=\"16\" y1=\"2\" x2=\"16\" y2=\"6\"><\/line>\r\n\t\t<line x1=\"8\" y1=\"2\" x2=\"8\" y2=\"6\"><\/line>\r\n\t\t<line x1=\"3\" y1=\"10\" x2=\"21\" y2=\"10\"><\/line>\r\n\t<\/svg>\r\n\t<span class=\"date-text\">\r\n\t\tNov 25, 2021\t<\/span>\r\n<\/div>\n\n\n<div class=\"kt-adv-heading2889_48172c-cf wp-block-kadence-advancedheading kt-adv-heading-has-icon animated fadeIn delay-100ms\" data-kb-block=\"kb-adv-heading2889_48172c-cf\"><span class=\"kb-svg-icon-wrap kb-adv-heading-icon kb-svg-icon-fe_clock kb-adv-heading-icon-side-left\"><svg viewbox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><polyline points=\"12 6 12 12 16 14\"\/><\/svg><\/span><span class=\"kb-adv-text-inner\">4 min <\/span><\/div><\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-kadence-image kb-image2889_13b97a-54 size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"535\" src=\"https:\/\/complior.se\/wp-content\/uploads\/2021\/11\/blockchain-02-1024x535.png\" alt=\"3 people holding security boxes and chains\" class=\"kb-img wp-image-50993\" srcset=\"https:\/\/complior.se\/wp-content\/uploads\/2021\/11\/blockchain-02-1024x535.png 1024w, https:\/\/complior.se\/wp-content\/uploads\/2021\/11\/blockchain-02-300x157.png 300w, https:\/\/complior.se\/wp-content\/uploads\/2021\/11\/blockchain-02-768x402.png 768w, https:\/\/complior.se\/wp-content\/uploads\/2021\/11\/blockchain-02-18x9.png 18w, https:\/\/complior.se\/wp-content\/uploads\/2021\/11\/blockchain-02.png 1201w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-b4aff183 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-group blockera-block blockera-block-12y5rt8 is-vertical is-layout-flex wp-container-core-group-is-layout-b2c973f4 wp-block-group-is-layout-flex\">\n<p class=\"kt-adv-heading2889_e5493d-e9 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_e5493d-e9\">Blockchain technologies are arguably breaking many patterns nowadays. Just consider the instances on which the circulation of bitcoin and ethereum crypto currencies are based. There are lots of aspects to keep in mind as they introduce new paradigms, including but not limited to those of a legal nature. From this perspective, looking at the Blockchain\/GDPR dualism is especially interesting. In particular, how the Blockchain will be able to support and respect the rules on the protection of personal data introduced by the GDPR.<br><br>According to the forecasts announced at the last World Economic Forum, as much as 10% of the world\u2019s GDP will, by 2025, be determined by activities and services distributed through Blockchain technologies. This is a scenario that, sooner or later, will have to deal with regulations, first of all GDPR (the European General Data Protection Regulation).<br>As things are today, it seems like the new regulation will have a significant impact on at least three major areas of the Blockchain.<br><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group blockera-block blockera-block-a9gws7 is-vertical is-layout-flex wp-container-core-group-is-layout-b2c973f4 wp-block-group-is-layout-flex\">\n<h2 class=\"kt-adv-heading2889_d2264d-80 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_d2264d-80\">GDPR impact on Blockchain<\/h2>\n\n\n\n<p class=\"kt-adv-heading2889_700cef-b4 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_700cef-b4\">Blockchain technologies are arguably breaking many patterns nowadays. Just consider the instances on which the circulation of bitcoin and ethereum crypto currencies are based. There are lots of aspects to keep in mind as they introduce new paradigms, including but not limited to those of a legal nature. From this perspective, looking at the Blockchain\/GDPR dualism is especially interesting. In particular, how the Blockchain will be able to support and respect the rules on the protection of personal data introduced by the GDPR.<br><br>According to the forecasts announced at the last World Economic Forum, as much as 10% of the world\u2019s GDP will, by 2025, be determined by activities and services distributed through Blockchain technologies. This is a scenario that, sooner or later, will have to deal with regulations, first of all GDPR (the European General Data Protection Regulation).<br>As things are today, it seems like the new regulation will have a significant impact on at least three major areas of the Blockchain.<br><\/p>\n\n\n\n<div class=\"wp-block-group blockera-block blockera-block-zh1uzw is-vertical is-layout-flex wp-container-core-group-is-layout-90752e8f wp-block-group-is-layout-flex\">\n<h3 class=\"kt-adv-heading2889_bbf01c-2c wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_bbf01c-2c\">GDPR impact on Blockchain<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"blockera-block blockera-block-1t54b2t has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">Data stored in a Blockchain network is considered to be tamper-proof, so its deletion will not be possible once such data is placed in the distributed chain;<\/li>\n\n\n\n<li class=\"blockera-block blockera-block-1wuilz1 has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">Blockchain networks are inherently distributed, so the control itself over such data can be decentralized and delegated to all the Blockchain participants (e.g. Data miners, who in any case would not be considered Data Protection Officers as requested by GDPR);<\/li>\n\n\n\n<li class=\"blockera-block blockera-block-1at6a5m has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">Smart Contract will be relying on their native automated decision-making mechanisms, thus opening up to non-trivial issues from the standpoint of possible disputes or litigations.<\/li>\n<\/ul>\n\n\n\n<p class=\"kt-adv-heading2889_2dd539-f6 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_2dd539-f6\"><strong>In general, two basic principles on which the value and power of Blockchain have been built upon seem, to date, to be mostly at risk of collisions with the GDPR:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"blockera-block blockera-block-1xj71rn has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">Data entered in the Blockchain is public and accessible by anyone who participates in the chain;<\/li>\n\n\n\n<li class=\"blockera-block blockera-block-1patv0b has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">Data in the Blockchain is stored without limitation<\/li>\n<\/ul>\n\n\n\n<p class=\"kt-adv-heading2889_64aac1-9e wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_64aac1-9e\">It will therefore be necessary to understand, on the one hand, how the protection of personal data can be reconciled into a system with huge amounts of data flows; on the other hand, how to comply with the rules around data retention in a system that inherently envisions indefinite archiving timescales.<br><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group blockera-block blockera-block-16eyg35 is-vertical is-layout-flex wp-container-core-group-is-layout-90752e8f wp-block-group-is-layout-flex\">\n<h3 class=\"kt-adv-heading2889_fed4dc-d7 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_fed4dc-d7\">Opportunities for GDPR and Blockchain<\/h3>\n\n\n\n<p class=\"kt-adv-heading2889_aee4d7-06 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_aee4d7-06\">Either way, alongside these challenges, the Blockchain\/GDPR dualism could also offer interesting opportunities, for example, from the point of view of the so-called \u201csecurity by design\u201d, which guarantees decoupling of data from individual identity and data minimization (i.e. sharing of only the strictly necessary data elements). This is because in Blockchain data protection is ensured by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"blockera-block blockera-block-1e1z5cb has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">The public key of the sender of the transaction;<\/li>\n\n\n\n<li class=\"blockera-block blockera-block-n4qmhs has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">The public key of the recipient of the transaction;<\/li>\n\n\n\n<li class=\"blockera-block blockera-block-f2esxl has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">A cryptographic hash of the content of the transaction;<\/li>\n\n\n\n<li class=\"blockera-block blockera-block-c35tnh has-manrope-font-family\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.227), 16px);font-style:normal;font-weight:500\">The date and time of the transaction.<\/li>\n<\/ul>\n\n\n\n<p class=\"kt-adv-heading2889_d4d664-da wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading2889_d4d664-da\">It is therefore impossible to reconstruct the contents of a transaction from one-way cryptographic hash. And, unless one of the parties to the transaction decides to link a public key to a known identity, it is in general not possible to map and link transactions to individuals or organizations. This means that even though the Blockchain is \u201cpublic by design\u201d (where anyone can see all transactions on it) no personal information is made public.<br><br>Whatever the future brings, there are undoubtedly (too) many open points that still need to be addressed and solved \u2013 and it will be very interesting to see how! The one that particularly comes to mind is: how will the Blockchain be able to address the very thorny \u201c<em>right to erasure<\/em>\u201d matter, considering that, once again by design, the chains are basically non-modifiable?<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>How the Blockchain will be able to support and respect the rules on the protection of personal data introduced by the GDPR.<\/p>","protected":false},"author":2,"featured_media":50993,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"blogg","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":2,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","_eb_attr":"","inline_featured_image":false,"_uag_custom_page_level_css":"","wpm_timeformat":"","_wpm_styles":"","footnotes":""},"categories":[118],"tags":[117,120],"class_list":["post-2889","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogg","tag-blog","tag-gdpr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Blockchain and GDPR: When Opportunities and Challenges Meet -<\/title>\n<meta name=\"description\" content=\"How the Blockchain will be able to support and respect the rules on the protection of personal data introduced 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