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<title data-rh="true">Mithril Team Update | Cardano Development Updates</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://input-output-hk.github.io/cardano-updates/2023-02-09-mithril"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" property="og:title" content="Mithril Team Update | Cardano Development Updates"><meta data-rh="true" name="description" content="High level overview"><meta data-rh="true" property="og:description" content="High level overview"><meta data-rh="true" property="og:type" content="article"><meta data-rh="true" property="article:published_time" content="2023-02-09T00:00:00.000Z"><meta data-rh="true" property="article:author" content="https://github.com/jpraynaud"><meta data-rh="true" property="article:tag" content="mithril"><link data-rh="true" rel="icon" href="/cardano-updates/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://input-output-hk.github.io/cardano-updates/2023-02-09-mithril"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/2023-02-09-mithril" hreflang="en"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/2023-02-09-mithril" hreflang="x-default"><link rel="alternate" type="application/rss+xml" href="/cardano-updates/rss.xml" title="Cardano Updates Feed RSS Feed">
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itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading"></a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a> distribution that enables the backward/forward compatibility mechanism implemented for seamlessly rolling out soft updates to Mithril networks. They completed the implementation of the era reader trait that powers the era switch behavior. The team finalized the development of the era reader adapter that retrieves era activation markers from transactions on the Cardano chain. They also completed the relational design of the aggregator store.</p><p>Finally, they created new SPO nodes on the Mithril networks and upgraded the Cardano node to version <code>1.35.5</code> on their <code>devnet</code> and infrastructure.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading"></a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a></li><li>Fixed a bug that prevented some signers to sign with <code>2304.0-prerelease</code> <a href="https://github.com/input-output-hk/mithril/issues/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Completed the implementation of an <code>EraChecker</code> that checks if an era is active <a href="https://github.com/input-output-hk/mithril/issues/708" target="_blank" rel="noopener noreferrer">#708</a></li><li>Completed the implementation of an <code>EraReader</code> that gathers era activation data <a href="https://github.com/input-output-hk/mithril/issues/709" target="_blank" rel="noopener noreferrer">#709</a></li><li>Completed the implementation of an <code>EraReader</code> adapter with on chain transaction as source <a href="https://github.com/input-output-hk/mithril/issues/710" target="_blank" rel="noopener noreferrer">#710</a></li><li>Completed the relational design of the aggregator store <a href="https://github.com/input-output-hk/mithril/issues/476" target="_blank" rel="noopener noreferrer">#476</a></li><li>Completed adding a new SPO on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/729" target="_blank" rel="noopener noreferrer">#729</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.5</code> <a href="https://github.com/input-output-hk/mithril/issues/725" target="_blank" rel="noopener noreferrer">#725</a></li><li>Fixed flakiness in the CI <a href="https://github.com/input-output-hk/mithril/issues/734" target="_blank" rel="noopener noreferrer">#734</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-09-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-10-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-08-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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