{"id":6651,"date":"2026-11-02T08:00:00","date_gmt":"2026-11-02T07:00:00","guid":{"rendered":"https:\/\/www.eadtrust.eu\/?p=6651"},"modified":"2026-11-06T07:16:31","modified_gmt":"2026-11-06T06:16:31","slug":"blockchain-eidas-dpp-qtsp","status":"publish","type":"post","link":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/","title":{"rendered":"Blockchain Is Not eIDAS: Why a DPP Platform Without a QTSP Has a Legal Problem, Not a Technical One"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">In 2026, dozens of technology platforms generate<a href=\"https:\/\/www.eadtrust.eu\/en\/dpp-certificate\/\"> Digital Product Passports (DPPs)<\/a> that structurally comply with the data requirements of <a href=\"https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/PDF\/?uri=OJ:L_202401781\">Regulation (EU) 2024\/1781 (ESPR)<\/a>. Some are based on blockchain architectures and present blockchain immutability as equivalent (or even superior) to a qualified trust service under the eIDAS framework.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That equivalence is a <strong>category error<\/strong>. Blockchain and eIDAS solve different problems. Confusing them leaves economic operators facing a legal rather than technical problem when their DPP is challenged by a market surveillance authority, customs authority or commercial counterparty.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This article is not intended to discredit any platform or technology. Blockchain is a legitimate and useful tool within a DPP data architecture. However, it does not replace the qualified trust services recognised by European law as carrying legal presumptions. The message is simple: platforms generate the content; a QTSP provides the missing trust layer. Together, they make the DPP complete.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you need background information about the <a href=\"https:\/\/www.eadtrust.eu\/en\/blog\/eu-regulation-2026-1778-in-force-dpp\/\">DPP Registry and its entry into force<\/a>, we recommend starting there.<\/p>\n\n\n\n<style>\n.eadb-trust-intro{\n  display:flex;\n  align-items:center;\n  gap:1.1rem;\n  margin:2rem 0;\n  padding:1.15rem 1.3rem;\n  background:#fff;\n  border:1px solid #e3e6ec;\n  border-left:4px solid #339980;\n  border-radius:10px;\n  box-shadow:0 1px 2px rgba(0,14,25,.04);\n  text-decoration:none;\n  font-family:inherit;\n  transition:transform .15s ease,box-shadow .15s ease;\n}\n\n.eadb-trust-intro:hover{\n  transform:translateY(-2px);\n  box-shadow:0 6px 16px rgba(0,14,25,.08);\n}\n\n.eadb-trust-intro-icon{\n  flex:0 0 auto;\n  width:46px;\n  height:46px;\n  display:flex;\n  align-items:center;\n  justify-content:center;\n  background:#e9f5f1;\n  border-radius:50%;\n  font-size:1.3rem;\n}\n\n.eadb-trust-intro-body{\n  flex:1 1 auto;\n}\n\n.eadb-trust-intro-tag{\n  display:block;\n  margin-bottom:.15rem;\n  color:#339980;\n  font-size:.72rem;\n  font-weight:700;\n  text-transform:uppercase;\n  letter-spacing:.05em;\n}\n\n.eadb-trust-intro-title{\n  display:block;\n  margin-bottom:.2rem;\n  color:#000e19;\n  font-size:1.02rem;\n  font-weight:700;\n  line-height:1.35;\n}\n\n.eadb-trust-intro-desc{\n  display:block;\n  color:#57626f;\n  font-size:.88rem;\n  line-height:1.45;\n}\n\n.eadb-trust-intro-arrow{\n  flex:0 0 auto;\n  color:#339980;\n  font-size:1.3rem;\n  font-weight:700;\n}\n\n@media(max-width:640px){\n  .eadb-trust-intro{\n    flex-wrap:wrap;\n  }\n\n  .eadb-trust-intro-arrow{\n    display:none;\n  }\n}\n<\/style>\n\n<a class=\"eadb-trust-intro\" href=\"https:\/\/www.eadtrust.eu\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">\n\n  <span class=\"eadb-trust-intro-icon\">\ud83d\udd10<\/span>\n\n  <span class=\"eadb-trust-intro-body\">\n    <span class=\"eadb-trust-intro-tag\">\n      DPP \u00b7 Trust Layer\n    <\/span>\n\n    <span class=\"eadb-trust-intro-title\">\n      Does your DPP platform generate the data but still lack qualified trust services?\n    <\/span>\n\n    <span class=\"eadb-trust-intro-desc\">\n     EADTrust can integrate qualified electronic seals, qualified electronic time stamps and electronic preservation into your existing architecture without replacing the platform\u2019s technology.\n    <\/span>\n  <\/span>\n\n  <span class=\"eadb-trust-intro-arrow\">\u2192<\/span>\n\n<\/a>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What Does Article 11 of the ESPR Actually Require for the Digital Product Passport?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Article 11 of Regulation (EU) 2024\/1781 establishes <strong>the essential technical design and operational requirements <\/strong>for the Digital Product Passport. Among them, points (g) and (h) are the most relevant to this analysis:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em>\u201c(g) the authentication, reliability and integrity of the data shall be ensured.\u201d<\/em><\/li>\n\n\n\n<li><em>&#8220;h) los pasaportes digitales de productos se dise\u00f1ar\u00e1n y funcionar\u00e1n de manera que se garantice un elevado nivel de seguridad y privacidad y se evite el fraude.&#8221;<\/em>&nbsp;<br>\u201c(h) digital product passports shall be designed and operated in such a way as to ensure a high level of security and privacy and to avoid fraud.\u201d<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These are not general recommendations for good technical practice. They are <strong>legally binding essential design requirements<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Failure to comply means that a DPP may be structurally correct (the required data fields are present and conform to the semantic model) while remaining legally deficient. It may not be possible to establish, with the legal assurance required by the Regulation, who entered the data, when it was entered or whether it has subsequently been altered.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Every economic operator should therefore ask the following question: does my DPP comply with Article 11(g) (authentication, reliability and integrity of data) using safeguards recognised as such under European law?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What Exactly Is the Technical Traceability Provided by Blockchain?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Blockchain provides three genuine and verifiable cryptographic properties:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Technical Immutability.<\/strong> A hash recorded on a blockchain cannot be altered without the change being detectable by any node on the network. If someone modifies the underlying data, the hash no longer matches.<\/li>\n\n\n\n<li><strong>Decentralisation.<\/strong> The chain does not depend on a central authority to operate. Multiple nodes maintain consistent copies of the record, reducing the risk of a single point of failure.<\/li>\n\n\n\n<li><strong>Transaction-Chain Traceability.<\/strong> Each transaction is recorded with the block timestamp and a reference to the previous state, allowing the complete sequence of changes to be reconstructed.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These properties are real. Blockchain is a legitimate and useful tool within a DPP data architecture. The problem is not what blockchain does. The problem is what some stakeholders assume blockchain also does when, in reality, it cannot.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What Can Blockchain Not Provide by Its Very Nature?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are three structural limitations. These are not implementation defects, but consequences of the technology\u2019s inherent nature.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. It Does Not Create a Legal Presumption of Integrity Recognised by EU Law<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A hash recorded on a blockchain proves that a piece of data existed at a given time and has not been altered within that chain.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, this technical evidence does not, by itself, create the presumption of integrity and authenticity of origin that European law expressly recognises for qualified trust services.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A legal presumption reverses the burden of proof: the party challenging the evidence must demonstrate that it is false. A blockchain hash does not benefit from this reversal of the burden of proof merely because it exists.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. It Is Not a Qualified Trust Service Within the Meaning of the eIDAS Regulation<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A qualified trust service is not a technology; it is a legal status.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It requires the provider to have been assessed by an accredited conformity assessment body, supervised by the competent national authority of a Member State and included in a Trusted List, with automatic cross-border recognition throughout the EU.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No matter how sophisticated it may be, a blockchain does not meet these conditions because it is not a service provider. It is a technical infrastructure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. It Does Not Legally Identify the Economic Operator Responsible for the Data<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Blockchain identifies cryptographic addresses or keys. That is not the same as identifying a natural or legal person with legal authority to act whose identity can be verified under EU law.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A qualified electronic seal unequivocally identifies its creator through a qualified certificate issued by a QTSP that has previously verified the holder\u2019s identity under supervised procedures.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A blockchain address does not provide this guarantee.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is precisely the difference between <strong>technical traceability<\/strong> (demonstrating that something has not changed since it was recorded) and <strong>qualified evidential value<\/strong>: demonstrating, with a recognised legal presumption and regulatory supervision, who generated the data and when.<\/p>\n\n\n\n<style>\n.eadb-compare{\n  display:grid;\n  grid-template-columns:1fr auto 1fr;\n  gap:.9rem;\n  align-items:stretch;\n  margin:2.3rem 0;\n  font-family:inherit;\n}\n\n.eadb-compare-side{\n  padding:1.15rem 1.2rem;\n  background:#fff;\n  border:1px solid #e3e6ec;\n  border-radius:12px;\n  box-shadow:0 1px 2px rgba(0,14,25,.04);\n}\n\n.eadb-compare-side.tech{\n  border-top:3px solid #70519c;\n}\n\n.eadb-compare-side.legal{\n  border-top:3px solid #339980;\n}\n\n.eadb-compare-label{\n  display:block;\n  margin-bottom:.35rem;\n  font-size:.7rem;\n  font-weight:700;\n  text-transform:uppercase;\n  letter-spacing:.05em;\n}\n\n.tech .eadb-compare-label{\n  color:#70519c;\n}\n\n.legal .eadb-compare-label{\n  color:#339980;\n}\n\n.eadb-compare-title{\n  display:block;\n  margin-bottom:.4rem;\n  color:#000e19;\n  font-size:1rem;\n  font-weight:700;\n}\n\n.eadb-compare-text{\n  display:block;\n  color:#57626f;\n  font-size:.85rem;\n  line-height:1.45;\n}\n\n.eadb-compare-plus{\n  display:flex;\n  align-items:center;\n  justify-content:center;\n  color:#000e19;\n  font-size:1.4rem;\n  font-weight:800;\n}\n\n.eadb-compare-bottom{\n  grid-column:1 \/ -1;\n  display:flex;\n  align-items:center;\n  justify-content:space-between;\n  gap:1rem;\n  padding:.85rem 1rem;\n  background:#000e19;\n  border-radius:10px;\n}\n\n.eadb-compare-bottom span{\n  color:#d1d9e0;\n  font-size:.86rem;\n  line-height:1.4;\n}\n\n.eadb-compare-btn{\n  flex:0 0 auto;\n  padding:.58rem .9rem;\n  background:#fff;\n  border-radius:7px;\n  color:#000e19;\n  font-size:.82rem;\n  font-weight:700;\n  text-decoration:none;\n}\n\n@media(max-width:680px){\n  .eadb-compare{\n    grid-template-columns:1fr;\n  }\n\n  .eadb-compare-plus{\n    min-height:20px;\n  }\n\n  .eadb-compare-bottom{\n    grid-column:auto;\n    flex-direction:column;\n    align-items:flex-start;\n  }\n}\n<\/style>\n\n<div class=\"eadb-compare\">\n\n  <div class=\"eadb-compare-side tech\">\n    <span class=\"eadb-compare-label\">Blockchain<\/span>\n    <span class=\"eadb-compare-title\">Technical Traceability<\/span>\n    <span class=\"eadb-compare-text\">\n      Immutability, hashes, decentralisation and traceability of operations.\n    <\/span>\n  <\/div>\n\n  <div class=\"eadb-compare-plus\">+<\/div>\n\n  <div class=\"eadb-compare-side legal\">\n    <span class=\"eadb-compare-label\">eIDAS \u00b7 QTSP<\/span>\n    <span class=\"eadb-compare-title\">Legal Trust<\/span>\n    <span class=\"eadb-compare-text\">\n      Verified identity, qualified electronic seals, reliable proof of time and guarantees backed by a supervised provider.\n    <\/span>\n  <\/div>\n\n  <div class=\"eadb-compare-bottom\">\n    <span>\n     You do not have to choose between these two layers. They can be integrated within the same DPP architecture.\n    <\/span>\n\n    <a class=\"eadb-compare-btn\" href=\"https:\/\/www.eadtrust.eu\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">\n      See how to integrate them \u2192\n    <\/a>\n  <\/div>\n\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What Legal Effects Do Qualified Electronic Seals and Signatures Provide That Blockchain Does Not?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The eIDAS Regulation expressly recognises the following legal effects for qualified trust services.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Qualified Electronic Seal<\/strong> (Articles 35-38 eIDAS): A qualified electronic seal cannot be denied legal effect or admissibility as evidence solely because it is in electronic form.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It benefits from a <strong>presumption of integrity of the data<\/strong> and <strong>correctness of the origin <\/strong>indicated. It is based on a qualified certificate uniquely linked to its creator (the identified legal person) and is created using a qualified electronic seal creation device.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Qualified Electronic Time Stamp<\/strong> (Articles 41-42 eIDAS): A qualified electronic time stamp benefits from a <strong>presumption of accuracy of the date and time<\/strong> it indicates and of the <strong>integrity of the data<\/strong> to which it is linked. It must link the date and time to the data in such a way as to reasonably exclude the possibility of undetectable modification.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These legal presumptions arise from a very specific source: <strong>regulatory supervision of the provider<\/strong> by a competent national authority, periodic auditing by an accredited conformity assessment body and inclusion in an EU Trusted List with automatic cross-border recognition in every Member State.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No blockchain can reproduce these presumptions by itself. This is not because blockchain is technically inferior, but because a legal presumption does not arise from the technical architecture of the data. It arises from the regulatory supervision of the provider guaranteeing it. These are two different layers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why Is This a Matter of Legal Fit Rather Than Technological Preference?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Consider a specific example. A market surveillance authority challenges a DPP and asks the economic operator to establish who entered a particular item of product-composition data and whether that information has remained intact since it was entered.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>With Blockchain<\/strong>: The operator can respond: \u201cThis data has not changed since it was recorded in this block, using this hash, on the date associated with the block.\u201d This is legitimate and useful technical evidence of immutability, but it does not carry a legal presumption recognised under European law.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>With a Qualified Electronic Seal<\/strong>: The operator can respond: \u201cThis legal person, identified through a qualified certificate issued by a supervised QTSP included in the Trusted List, sealed this data at this date and time, as certified by a qualified electronic time stamp carrying a legal presumption of accuracy.\u201d The burden of proof is reversed. Anyone challenging the integrity or origin of the data must prove that it is false.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Article 15 of the ESPR already anticipates this logic. It expressly states that customs clearance for release for free circulation (which is based on automatically checking the identifier and commodity code against the Registry) \u201cshall not be considered proof of compliance with this Regulation\u201d. Responsibility for demonstrating the authenticity, reliability and integrity of the DPP data under Article 11 therefore remains with the economic operator. Fulfilling that responsibility requires tools with legal recognition, not merely technical robustness.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Blockchain and eIDAS: Why They Are Complementary Layers Rather Than Alternatives&nbsp;<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nothing prevents both layers from being combined. In many designs, doing so is entirely reasonable.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Technical Traceability Layer<\/strong> <strong>(blockchain):<\/strong> This provides immutability, decentralisation and traceability across the transaction chain. It is the data infrastructure.<\/li>\n\n\n\n<li><strong>Legal Trust Layer (Qualified eIDAS Services):<\/strong> This provides a legal presumption of integrity and origin, legal identification of the economic operator, qualified proof of time and regulatory supervision of the provider. It is the legal assurance layer.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">When Article 2(32) of the ESPR requires an \u201cindependent third-party provider\u201d to process DPP data with the guarantees specified in Article 11, that assurance role can only be performed with full legal recognition by a <strong>Qualified Trust Service Provider (QTSP)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No matter how sophisticated it may be, a blockchain platform does not replace this function because it is not (and does not claim to be) a supervised QTSP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The effective model is based on complementarity:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The platform generates the DPP content, including product data, semantic structure and the access interface.<\/li>\n\n\n\n<li>A QTSP guarantees the authenticity, integrity and availability of that data through qualified electronic seals, qualified electronic time stamps and qualified electronic archiving.<\/li>\n\n\n\n<li>Together, they provide a DPP that is both structurally compliant and legally robust.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The technical integration is straightforward. The platform sends the document or dataset to the QTSP through an API. The QTSP applies the qualified electronic seal and can optionally deposit the sealed document in a qualified electronic archiving service for long-term preservation.<br>There is no need to change the platform\u2019s technology. You simply need to add another layer.<\/p>\n\n\n\n<style>\n.eadb-api{\n  display:grid;\n  grid-template-columns:auto 1fr auto;\n  align-items:center;\n  gap:1.2rem;\n  margin:2.3rem 0;\n  padding:1.3rem 1.4rem;\n  background:#f7f9fc;\n  border:1px solid #dfe4ea;\n  border-radius:13px;\n  font-family:inherit;\n}\n\n.eadb-api-icon{\n  display:flex;\n  align-items:center;\n  justify-content:center;\n  width:54px;\n  height:54px;\n  background:#eef0ff;\n  border-radius:12px;\n  color:#000ead;\n  font-size:1.25rem;\n  font-weight:800;\n}\n\n.eadb-api-tag{\n  display:block;\n  margin-bottom:.2rem;\n  color:#000ead;\n  font-size:.7rem;\n  font-weight:700;\n  text-transform:uppercase;\n  letter-spacing:.05em;\n}\n\n.eadb-api-title{\n  display:block;\n  margin-bottom:.3rem;\n  color:#000e19;\n  font-size:1rem;\n  font-weight:700;\n}\n\n.eadb-api-desc{\n  display:block;\n  color:#57626f;\n  font-size:.85rem;\n  line-height:1.45;\n}\n\n.eadb-api-btn{\n  white-space:nowrap;\n  display:inline-flex;\n  align-items:center;\n  padding:.65rem .95rem;\n  background:#000ead;\n  border-radius:8px;\n  color:#fff;\n  font-size:.84rem;\n  font-weight:700;\n  text-decoration:none;\n  transition:transform .15s ease;\n}\n\n.eadb-api-btn:hover{\n  transform:translateY(-2px);\n}\n\n@media(max-width:700px){\n  .eadb-api{\n    grid-template-columns:auto 1fr;\n  }\n\n  .eadb-api-btn{\n    grid-column:2;\n    width:fit-content;\n  }\n}\n<\/style>\n\n<div class=\"eadb-api\">\n\n  <div class=\"eadb-api-icon\">\n    API\n  <\/div>\n\n  <div>\n    <span class=\"eadb-api-tag\">\n      Technical Integration\n    <\/span>\n\n    <span class=\"eadb-api-title\">\n      Do you already have a DPP platform and want to retain your existing architecture?\n    <\/span>\n\n    <span class=\"eadb-api-desc\">\n      Keep your current infrastructure and use an API to add qualified electronic seals, qualified electronic time stamps and trust services.\n    <\/span>\n  <\/div>\n\n  <a class=\"eadb-api-btn\" href=\"https:\/\/www.eadtrust.eu\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">\n    Discuss integration \u2192\n  <\/a>\n\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What Should an Economic Operator Ask Before Trusting a DPP Platform?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Before assuming that your DPP platform complies with Article 11 of the ESPR, ask the following questions.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>How Is the Economic Operator Identified?<\/strong> Is identification performed through a qualified trust service under eIDAS (such as a qualified electronic seal based on a qualified certificate issued by a QTSP) or only through a cryptographic key or address without regulatory backing?<\/li>\n\n\n\n<li><strong>Is the Seal or Time Stamp Applied to the Data Supported by a Qualified Certificate?<\/strong> Is the issuing provider included in an EU Trusted List and supervised by a competent national authority?&nbsp;<\/li>\n\n\n\n<li><strong>Can the Platform Demonstrate Regulatory Supervision of Its Trust Layer?<\/strong> If questioned by a market surveillance authority, can the platform demonstrate that the integrity and authenticity guarantees arise from a qualified trust service, or merely from a technical architecture?&nbsp;<\/li>\n\n\n\n<li><strong>What Can the Platform Provide in the Event of a Dispute?<\/strong> Can it provide a legal presumption of integrity and origin, including reversal of the burden of proof, or only technical evidence of immutability without a legal presumption?&nbsp;<\/li>\n\n\n\n<li><strong>Can the Architecture Incorporate a Qualified Trust Layer Without Being Redesigned?<\/strong> Can a QTSP be integrated through an API to provide qualified electronic seals, qualified electronic time stamps and archiving without changing the underlying platform?&nbsp;<\/li>\n<\/ul>\n\n\n\n<style>\n.eadb-audit{\n  display:flex;\n  align-items:center;\n  justify-content:space-between;\n  gap:1.3rem;\n  margin:2.3rem 0;\n  padding:1.25rem 1.35rem;\n  background:#fff;\n  border:1px solid #e3e6ec;\n  border-radius:12px;\n  box-shadow:0 2px 8px rgba(0,14,25,.05);\n  font-family:inherit;\n}\n\n.eadb-audit-left{\n  display:flex;\n  align-items:flex-start;\n  gap:.9rem;\n}\n\n.eadb-audit-check{\n  flex:0 0 auto;\n  display:flex;\n  align-items:center;\n  justify-content:center;\n  width:42px;\n  height:42px;\n  background:#e9f5f1;\n  border-radius:50%;\n  color:#339980;\n  font-size:1.1rem;\n  font-weight:800;\n}\n\n.eadb-audit-tag{\n  display:block;\n  margin-bottom:.2rem;\n  color:#339980;\n  font-size:.7rem;\n  font-weight:700;\n  text-transform:uppercase;\n  letter-spacing:.05em;\n}\n\n.eadb-audit-title{\n  display:block;\n  margin-bottom:.25rem;\n  color:#000e19;\n  font-size:1rem;\n  font-weight:700;\n}\n\n.eadb-audit-desc{\n  display:block;\n  max-width:650px;\n  color:#57626f;\n  font-size:.85rem;\n  line-height:1.45;\n}\n\n.eadb-audit-btn{\n  flex:0 0 auto;\n  padding:.65rem .95rem;\n  background:#339980;\n  border-radius:8px;\n  color:#fff;\n  font-size:.84rem;\n  font-weight:700;\n  text-decoration:none;\n}\n\n@media(max-width:680px){\n  .eadb-audit{\n    flex-direction:column;\n    align-items:flex-start;\n  }\n}\n<\/style>\n\n<div class=\"eadb-audit\">\n\n  <div class=\"eadb-audit-left\">\n\n    <div class=\"eadb-audit-check\">\u2713<\/div>\n\n    <div>\n      <span class=\"eadb-audit-tag\">\n        DPP Architecture Review\n      <\/span>\n\n      <span class=\"eadb-audit-title\">\n        Are you unsure whether your platform\u2019s trust layer is sufficient?\n      <\/span>\n\n      <span class=\"eadb-audit-desc\">\n        We can review how you identify economic operators, what evidence your system generates and whether your architecture can incorporate qualified trust services without requiring the platform to be redesigned.\n      <\/span>\n    <\/div>\n\n  <\/div>\n\n  <a class=\"eadb-audit-btn\" href=\"https:\/\/www.eadtrust.eu\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">\n    Review my case \u2192\n  <\/a>\n\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Frequently Asked Questions<\/strong><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1791196652694\"><strong class=\"schema-faq-question\"><strong>Is Blockchain Illegal or Prohibited for the DPP?<\/strong><\/strong> <p class=\"schema-faq-answer\">No. Neither the ESPR nor the eIDAS Regulation prohibits the use of blockchain. It is a legitimate and useful technology that can serve as the data infrastructure for a DPP.<br>What blockchain cannot do by itself is replace the role of a qualified trust service for the purposes of complying with Article 11 of the ESPR.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791196666865\"><strong class=\"schema-faq-question\"><strong>Does the ESPR Explicitly Require the Use of Blockchain or eIDAS?<\/strong><\/strong> <p class=\"schema-faq-answer\">The ESPR does not mention blockchain.<br>However, Article 11(g) requires the authentication, reliability and integrity of DPP data to be ensured. It does not prescribe a specific technology, but the required legal effects (authentication and integrity backed by guarantees) are precisely those that the eIDAS Regulation recognises for qualified trust services.<br>The connection is therefore functional rather than based on an explicit reference.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791196674727\"><strong class=\"schema-faq-question\"><strong>What Exactly Is a Qualified Trust Service, and How Does It Differ from a Non-Qualified Service?<\/strong><\/strong> <p class=\"schema-faq-answer\">A qualified trust service is provided by a QTSP that has been assessed by an accredited conformity assessment body, complies with the requirements of the eIDAS Regulation, is supervised by the competent national authority of a Member State and appears on that Member State\u2019s Trusted List.<br>The main difference from a non-qualified service is that it benefits from express legal presumptions concerning integrity, correctness of origin and accuracy of the date and time, as well as automatic cross-border recognition throughout the EU.<br>A non-qualified service does not benefit from those presumptions.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791196684742\"><strong class=\"schema-faq-question\"><strong>What Does It Mean for Data to Benefit from a \u201cLegal Presumption of Integrity\u201d?<\/strong><\/strong> <p class=\"schema-faq-answer\">It means that European law recognises by default that the data has not been altered since it was sealed.<br>Anyone challenging the data must prove that it was altered: the burden of proof is reversed.<br>Without a legal presumption, the burden falls on the party asserting integrity. That party must positively demonstrate that the data has not changed, rather than requiring the opposing party to prove that it has.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791196692595\"><strong class=\"schema-faq-question\">Can a Blockchain-Based DPP Platform Be Integrated with a QTSP Without Changing Its Technology?<\/strong> <p class=\"schema-faq-answer\">Yes. The integration adds another layer; it does not replace the existing system.<br>The platform can continue generating and storing DPP data using its own architecture, including blockchain if desired. The QTSP is integrated through an API to apply a qualified electronic seal and qualified electronic time stamp to the data or documents generated by the platform.<br>There is no technical conflict. The two layers are complementary.<\/p> <\/div> <\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>EADTrust: The Qualified Trust Layer for Any DPP Platform&nbsp;<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.eadtrust.eu\/en\/\">EADTrust<\/a> is a <strong>Qualified Trust Service Provider (QTSP)<\/strong> included in the EU Trusted List and supervised by Spain\u2019s Ministry of Economic Affairs and Digital Transformation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">EADTrust does not compete with platforms that generate DPPs. It <strong>complements <\/strong>them by providing the qualified legal trust layer required under Article 11 of the ESPR.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Qualified Electronic Seal Certificate (QSealC).<\/strong> This legally identifies the economic operator and guarantees the authentication and integrity of the DPP data with a legal presumption recognised throughout the EU.<\/li>\n\n\n\n<li><strong>Sello de tiempo cualificado.<\/strong> This establishes, with a legal presumption, the date and time of each operation involving DPP data, including its creation, modification and updating.<\/li>\n\n\n\n<li><strong>Qualified Electronic Archiving (Cartulario).<\/strong> This guarantees the long-term availability and integrity of the DPP in accordance with Article 45j of the eIDAS 2.0 Regulation, including following the insolvency or cessation of activity of the operator.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This trust layer can be integrated into the data architecture of any DPP platform, including blockchain-based platforms, without replacing its existing technology. Integration takes place through an API and is transparent to the platform\u2019s end user.<\/p>\n\n\n\n<style>\n.eadb-final-trust{\n  position:relative;\n  display:flex;\n  flex-direction:column;\n  gap:.5rem;\n  margin:2.5rem 0;\n  padding:1.8rem 2rem;\n  background:#000e19;\n  border-radius:14px;\n  overflow:hidden;\n  font-family:inherit;\n}\n\n.eadb-final-trust::before{\n  content:\"\";\n  position:absolute;\n  top:-90px;\n  right:-60px;\n  width:260px;\n  height:260px;\n  background:radial-gradient(circle,rgba(51,153,128,.35),transparent 70%);\n  pointer-events:none;\n}\n\n.eadb-final-trust-tag{\n  position:relative;\n  color:#67cdb4;\n  font-size:.73rem;\n  font-weight:700;\n  text-transform:uppercase;\n  letter-spacing:.06em;\n}\n\n.eadb-final-trust-title{\n  position:relative;\n  max-width:720px;\n  color:#fff;\n  font-size:1.22rem;\n  font-weight:700;\n  line-height:1.4;\n}\n\n.eadb-final-trust-desc{\n  position:relative;\n  max-width:760px;\n  color:#a9b4bf;\n  font-size:.88rem;\n  line-height:1.5;\n}\n\n.eadb-final-trust-actions{\n  position:relative;\n  display:flex;\n  gap:.7rem;\n  flex-wrap:wrap;\n  margin-top:.45rem;\n}\n\n.eadb-final-trust-btn{\n  display:inline-flex;\n  align-items:center;\n  padding:.62rem 1rem;\n  background:#fff;\n  border-radius:8px;\n  color:#000e19;\n  font-size:.85rem;\n  font-weight:700;\n  text-decoration:none;\n  transition:background .15s ease,transform .15s ease;\n}\n\n.eadb-final-trust-btn:hover{\n  background:#67cdb4;\n  transform:translateY(-2px);\n}\n<\/style>\n\n<div class=\"eadb-final-trust\">\n\n  <span class=\"eadb-final-trust-tag\">\n    EADTrust \u00b7 QTSP\n  <\/span>\n\n  <span class=\"eadb-final-trust-title\">\n    Your platform can continue doing what it does best. We add the trust layer.\n  <\/span>\n\n  <span class=\"eadb-final-trust-desc\">\n   If you develop a DPP platform or are an economic operator seeking to strengthen the authentication, integrity, reliable proof of time and preservation of your data, we can assess how qualified trust services can be integrated into your current architecture.\n  <\/span>\n\n  <div class=\"eadb-final-trust-actions\">\n\n    <a class=\"eadb-final-trust-btn\" href=\"https:\/\/www.eadtrust.eu\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">\n      Assess my architecture \u2192\n    <\/a>\n\n  <\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In 2026, dozens of technology platforms generate Digital Product Passports (DPPs) that structurally comply with the data requirements of Regulation (EU) 2024\/1781 (ESPR). Some are based on blockchain architectures and present blockchain immutability as equivalent (or even superior) to a qualified trust service under the eIDAS framework. That equivalence is a category error. Blockchain and [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":6661,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6651","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categoria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Blockchain and eIDAS in the DPP: Why You Need a QTSP - EADTrust<\/title>\n<meta name=\"description\" content=\"Blockchain provides traceability for the DPP, but it does not replace eIDAS. Discover why a QTSP adds identity, integrity and qualified legal value.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Blockchain and eIDAS in the DPP: Why You Need a QTSP - EADTrust\" \/>\n<meta property=\"og:description\" content=\"Blockchain provides traceability for the DPP, but it does not replace eIDAS. Discover why a QTSP adds identity, integrity and qualified legal value.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/\" \/>\n<meta property=\"og:site_name\" content=\"EADTrust\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-02T07:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-06T06:16:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.eadtrust.eu\/wp-content\/uploads\/2026\/10\/Blockchain-DPP-y-confianza-eIDAS.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1663\" \/>\n\t<meta property=\"og:image:height\" content=\"946\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Iria Benito\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Iria Benito\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"13 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/\"},\"author\":{\"name\":\"Iria Benito\",\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/#\\\/schema\\\/person\\\/a3734067aec82e51658e0148f12b57c2\"},\"headline\":\"Blockchain Is Not eIDAS: Why a DPP Platform Without a QTSP Has a Legal Problem, Not a Technical One\",\"datePublished\":\"2026-11-02T07:00:00+00:00\",\"dateModified\":\"2026-11-06T06:16:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/\"},\"wordCount\":2683,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.eadtrust.eu\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/Blockchain-DPP-y-confianza-eIDAS.png\",\"articleSection\":[\"Sin categor\u00eda\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/#respond\"]}]},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/\",\"url\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/\",\"name\":\"Blockchain and eIDAS in the DPP: Why You Need a QTSP - EADTrust\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.eadtrust.eu\\\/en\\\/blog\\\/blockchain-eidas-dpp-qtsp\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.eadtrust.eu\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/Blockchain-DPP-y-confianza-eIDAS.png\",\"datePublished\":\"2026-11-02T07:00:00+00:00\",\"dateModified\":\"2026-11-06T06:16:31+00:00\",\"description\":\"Blockchain provides traceability for the DPP, but it does not replace eIDAS. 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It is a legitimate and useful technology that can serve as the data infrastructure for a DPP.<br>What blockchain cannot do by itself is replace the role of a qualified trust service for the purposes of complying with Article 11 of the ESPR.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/#faq-question-1791196666865","position":2,"url":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/#faq-question-1791196666865","name":"Does the ESPR Explicitly Require the Use of Blockchain or eIDAS?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The ESPR does not mention blockchain.<br>However, Article 11(g) requires the authentication, reliability and integrity of DPP data to be ensured. It does not prescribe a specific technology, but the required legal effects (authentication and integrity backed by guarantees) are precisely those that the eIDAS Regulation recognises for qualified trust services.<br>The connection is therefore functional rather than based on an explicit reference.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/#faq-question-1791196674727","position":3,"url":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/#faq-question-1791196674727","name":"What Exactly Is a Qualified Trust Service, and How Does It Differ from a Non-Qualified Service?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A qualified trust service is provided by a QTSP that has been assessed by an accredited conformity assessment body, complies with the requirements of the eIDAS Regulation, is supervised by the competent national authority of a Member State and appears on that Member State\u2019s Trusted List.<br>The main difference from a non-qualified service is that it benefits from express legal presumptions concerning integrity, correctness of origin and accuracy of the date and time, as well as automatic cross-border recognition throughout the EU.<br>A non-qualified service does not benefit from those presumptions.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/#faq-question-1791196684742","position":4,"url":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/#faq-question-1791196684742","name":"What Does It Mean for Data to Benefit from a \u201cLegal Presumption of Integrity\u201d?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It means that European law recognises by default that the data has not been altered since it was sealed.<br>Anyone challenging the data must prove that it was altered: the burden of proof is reversed.<br>Without a legal presumption, the burden falls on the party asserting integrity. That party must positively demonstrate that the data has not changed, rather than requiring the opposing party to prove that it has.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/#faq-question-1791196692595","position":5,"url":"https:\/\/www.eadtrust.eu\/en\/blog\/blockchain-eidas-dpp-qtsp\/#faq-question-1791196692595","name":"Can a Blockchain-Based DPP Platform Be Integrated with a QTSP Without Changing Its Technology?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. The integration adds another layer; it does not replace the existing system.<br>The platform can continue generating and storing DPP data using its own architecture, including blockchain if desired. The QTSP is integrated through an API to apply a qualified electronic seal and qualified electronic time stamp to the data or documents generated by the platform.<br>There is no technical conflict. 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