{
  "version": "https://jsonfeed.org/version/1.1",
  "title": "chem-bla-ics",
  "description": "Chemblaics (pronounced chem-bla-ics) is the science that uses open science and computers to solve problems in chemistry, biochemistry and related fields.",
  "home_page_url": "https://chem-bla-ics.linkedchemistry.info/",
  "feed_url": "https://chem-bla-ics.linkedchemistry.info/2026/08/31/crossref-how-do-i-get-old-blog-post-urls-linked-to-the-new-dois.json",
  "icon": "https://chem-bla-ics.linkedchemistry.info/assets/images/chem-bla-ics_logo.png",
  "language": "en",
  "authors": [
    {
      "name": "Egon Willighagen",
      "url": "https://orcid.org/0000-0001-7542-0286",
      "_orcid": "0000-0001-7542-0286"
    }
  ],
  "items": [

    {
      "id": "https://doi.org/10.59350/f33zw-5ry04",
      "url": "https://chem-bla-ics.linkedchemistry.info/2026/08/31/crossref-how-do-i-get-old-blog-post-urls-linked-to-the-new-dois.html",
      "title": "Crossref, how do I get old blog post URLs linked to the new DOIs?",
      "content_html": "<p>Now that <a href=\"https://rogue-scholar.org/\">Rogue Scholar</a> is getting <a href=\"https://doi.org/10.53731/zyg15-qv911\">serious about citations to blog posts</a>\nand <a href=\"https://chem-bla-ics.linkedchemistry.info/2026/08/23/rogue-scholar-keeps-challenging-the-functionality-of-my-blog.html\">how complex this is</a>,\nI have been wondering how this works.</p>\n\n<p>I already knew that <a href=\"https://www.crossref.org/\">Crossref</a> tracks citations (see e.g. <a href=\"https://api.crossref.org/works/10.59787/2413-5488-2025-49-1-83-92\">this API call</a>\nfor a paper where <a href=\"https://jmol.org/\">Jmol</a> is used, doi:<a href=\"https://doi.org/10.59787/2413-5488-2025-49-1-83-92\">10.59787/2413-5488-2025-49-1-83-92</a>),\nand I learned that apparently Crossref also does an good job at finding citations when blog post URLs are used instead of the DOIs of the blog posts.</p>\n\n<p>But how does it know? When Rogue Scholar registers a DOI, I assume it passes on the URL to redirect too. But what if the URL changed over time?\nFor example, I used blogger.com for many years (with satisfaction) and <a href=\"https://chem-bla-ics.linkedchemistry.info/2023/08/18/last-post-here-freebie-model-online.html\">the URLs of the posts have changed</a>!</p>\n\n<p>Crossref, how do I get the old blog post URLs also linked to the DOI?</p>\n\n<p>For example, the doi <a href=\"https://doi.org/10.59350/65nqr-3w351\">10.59350/65nqr-3w351</a> links now to\n<a href=\"https://chem-bla-ics.linkedchemistry.info/2023/08/18/last-post-here-freebie-model-online.html\">https://chem-bla-ics.linkedchemistry.info/2023/08/18/last-post-here-freebie-model-online.html</a>\nbut originally the URL was <a href=\"https://chem-bla-ics.linkedchemistry.info/2023/08/18/last-post-here-freebie-model-online.html\">https://chem-bla-ics.blogspot.com/2023/08/last-post-here-freebie-model-online.html <i class=\"fa-solid fa-recycle fa-xs\"></i></a>.</p>\n\n<h4>References</h4>\n<div class=\"csl-bib-body\">\n    <div class=\"csl-entry\">Akatyev, N. (2025). TEACHING THE FUNDAMENTALS OF MOLECULAR SYMMETRY IN HIGH SCHOOL THROUGH THE USE OF THE INTERACTIVE ONLINE RESOURCE SYMOTTER. <i>National Center for Higher Education Development</i>, <i>49</i>(1). https://doi.org/10.59787/2413-5488-2025-49-1-83-92 <a href=\"https://doi.org/10.59787/2413-5488-2025-49-1-83-92\">CrossRef</a> <a href=\"https://qlever.scholia.wiki/doi/10.59787/2413-5488-2025-49-1-83-92\">Scholia</a></div>\n    <div class=\"csl-entry\">Fenner, M. (2025). Rogue Scholar citation tracking launches to production. In <i>Front Matter</i>. Front Matter. https://doi.org/10.53731/zyg15-qv911 <a href=\"https://doi.org/10.53731/zyg15-qv911\">CrossRef</a> <a href=\"https://qlever.scholia.wiki/doi/10.53731/zyg15-qv911\">Scholia</a></div>\n    <div class=\"csl-entry\">Willighagen, E. (2023). Last post there / the Freebie model online. In <i>Front Matter</i>. Front Matter. https://doi.org/10.59350/65nqr-3w351 <a href=\"https://doi.org/10.59350/65nqr-3w351\">CrossRef</a> <a href=\"https://qlever.scholia.wiki/doi/10.59350/65nqr-3w351\">Scholia</a></div>\n  </div>",
      "summary": "Now that Rogue Scholar is getting serious about citations to blog posts and how complex this is, I have been wondering how this works.",
      
      "date_published": "2026-08-31T00:00:00+00:00",
      "date_modified": "2026-09-27T00:00:00+00:00",
      "tags": ["blog","doi"],
      "_references": [
        
          
          
            { "url": "https://doi.org/10.59787/2413-5488-2025-49-1-83-92", "doi": "10.59787/2413-5488-2025-49-1-83-92"
             }
            ,
          
        
          
          
            { "url": "https://doi.org/10.53731/zyg15-qv911", "doi": "10.53731/zyg15-qv911"
             }
            ,
          
        
          
          
            { "url": "https://doi.org/10.59350/65nqr-3w351", "doi": "10.59350/65nqr-3w351"
             }
            
          
        ],
      
      
      
      
      
      
        "authors": [ { "name": "Egon Willighagen", "url": "https://orcid.org/0000-0001-7542-0286" } ]
      
    }

  ]
}
