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    <title>QES.dev Blog</title>
    <description>Guides, insights, and implementation notes on eIDAS, EUDI Wallet, and digital signing</description>
    <link>https://www.qes.dev/blog/</link>
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    <lastBuildDate>Sun, 26 Apr 2026 21:29:25 GMT</lastBuildDate>
    
    <item>
        <title><![CDATA[QES Validation Deep Dive]]></title>
        <description><![CDATA[A deeper look at how format rules, payload integrity, certificate context, and trust-service status interact in qualified-signature validation.]]></description>
        <link>https://www.qes.dev/blog/qes-validation-deep-dive</link>
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        <pubDate>Wed, 22 Apr 2026 10:10:00 GMT</pubDate>
        <category>Engineering</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[How QES Systems Actually Work]]></title>
        <description><![CDATA[A practical introduction to the trust services, device models, and workflow choices behind qualified electronic signature systems.]]></description>
        <link>https://www.qes.dev/blog/how-qes-systems-actually-work</link>
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        <pubDate>Sat, 18 Apr 2026 09:20:00 GMT</pubDate>
        <category>Basics</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[What Is CAdES?]]></title>
        <description><![CDATA[CAdES matters when the workflow is centered on cryptographic packaging rather than a PDF-first or XML-first document model.]]></description>
        <link>https://www.qes.dev/blog/what-is-cades</link>
        <guid isPermaLink="true">https://www.qes.dev/blog/what-is-cades</guid>
        <pubDate>Thu, 09 Apr 2026 08:30:00 GMT</pubDate>
        <category>Engineering</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[How QES Validation Works]]></title>
        <description><![CDATA[Validation is not a single pass/fail check. It is a layered trust decision that sits downstream of signature creation.]]></description>
        <link>https://www.qes.dev/blog/how-qes-validation-works</link>
        <guid isPermaLink="true">https://www.qes.dev/blog/how-qes-validation-works</guid>
        <pubDate>Sun, 29 Mar 2026 08:40:00 GMT</pubDate>
        <category>Engineering</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[What Is PAdES?]]></title>
        <description><![CDATA[PAdES is the signature family most closely associated with advanced and qualified PDF signing workflows.]]></description>
        <link>https://www.qes.dev/blog/what-is-pades</link>
        <guid isPermaLink="true">https://www.qes.dev/blog/what-is-pades</guid>
        <pubDate>Wed, 11 Mar 2026 09:50:00 GMT</pubDate>
        <category>Engineering</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[What Is XAdES?]]></title>
        <description><![CDATA[XAdES is the format family to understand when signatures are tied to structured XML workflows rather than document-first experiences.]]></description>
        <link>https://www.qes.dev/blog/what-is-xades</link>
        <guid isPermaLink="true">https://www.qes.dev/blog/what-is-xades</guid>
        <pubDate>Tue, 03 Mar 2026 11:05:00 GMT</pubDate>
        <category>Engineering</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[What Is a Trust List?]]></title>
        <description><![CDATA[Trust lists are not background legal artifacts. They are part of how qualified status is actually checked in real workflows.]]></description>
        <link>https://www.qes.dev/blog/what-is-a-trust-list</link>
        <guid isPermaLink="true">https://www.qes.dev/blog/what-is-a-trust-list</guid>
        <pubDate>Sat, 21 Feb 2026 12:15:00 GMT</pubDate>
        <category>Basics</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[Remote Signing vs Local Signing]]></title>
        <description><![CDATA[This is one of the highest-impact architecture decisions in a QES product, and it changes everything from onboarding to support.]]></description>
        <link>https://www.qes.dev/blog/remote-signing-vs-local-signing</link>
        <guid isPermaLink="true">https://www.qes.dev/blog/remote-signing-vs-local-signing</guid>
        <pubDate>Sat, 14 Feb 2026 11:25:00 GMT</pubDate>
        <category>Engineering</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[What Is a QSCD?]]></title>
        <description><![CDATA[Understand why qualified signature creation devices matter in both local-token and remote-signing architectures.]]></description>
        <link>https://www.qes.dev/blog/what-is-a-qscd</link>
        <guid isPermaLink="true">https://www.qes.dev/blog/what-is-a-qscd</guid>
        <pubDate>Tue, 03 Feb 2026 07:55:00 GMT</pubDate>
        <category>Basics</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[What Is a QTSP?]]></title>
        <description><![CDATA[A practical explanation of Qualified Trust Service Providers and why their status matters in real QES workflows.]]></description>
        <link>https://www.qes.dev/blog/what-is-a-qtsp</link>
        <guid isPermaLink="true">https://www.qes.dev/blog/what-is-a-qtsp</guid>
        <pubDate>Tue, 27 Jan 2026 10:45:00 GMT</pubDate>
        <category>Basics</category>
        <author>Simona Stankova</author>
    </item>
    <item>
        <title><![CDATA[SES vs AdES vs QES]]></title>
        <description><![CDATA[Understand the practical difference between simple, advanced, and qualified electronic signatures before you commit to an implementation path.]]></description>
        <link>https://www.qes.dev/blog/ses-vs-ades-vs-qes</link>
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        <pubDate>Mon, 12 Jan 2026 09:05:00 GMT</pubDate>
        <category>Basics</category>
        <author>Simona Stankova</author>
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