anchor.diff:    </ul>
   
   
  -  <h2>Expert Certificate</h2>
  -  <p>An expert-level certificate is designed for core reference data: data lots of other datasets will reference to provide further information about the things that they provide information about. The expert-level requirements reflect the importance of this information.</p>
  +  <h2>Platinum Certificate</h2>
  +  <p>An platinum-level certificate is designed for core reference data: data lots of other datasets will reference to provide further information about the things that they provide information about. The platinum-level requirements reflect the importance of this information.</p>
   
   
     <h3>Legal Requirements</h3>
     <p>You must also provide machine-readable versions of:</p>
     <ul>
  -    <li>information in the rights statement as required in a Standard certificate</li>
  +    <li>information in the rights statement as required in a Gold certificate</li>
       <li>a copyright notice or statement</li>
       <li>the copyright year</li>
       <li>the copyright holder</li>
  
positive.code: 
    <p>If you provide an API to access the data, and you are publishing dumps of the data as well, then you should create a new dump every month or more frequently. This means that people who want to get hold of the whole set of data can get hold of a dump that isn't too out of date.</p>
  
    <p>You must consider how long you intend to publish the data for. For a pilot certificate, you should intend for the data to be available in the same form for at least a year. If it is not going to be available for at least a year, it is unlikely any reuser will invest time to use it except in proofs of concept.</p>
    <h3>Technical Requirements</h3>
    <p>If you are publishing a one-off release of a dataset, you must be able to provide a URL directly linking to that dataset so it can be downloaded.</p>
  
    <p>If you are publishing a series of datasets, the URLs for the datasets in the series should follow a consistent pattern so that people can predict the URL for a particular month for example, or create a script that downloads them all.</p>
  
    <p>To achieve a pilot certificate, the data must be published in a machine-readable format. Further to this:</p>
    <ul>
      <li>if you are publishing <strong>documents</strong> these must be published in a format for documents (which can include Word, OpenOffice or PDF at the pilot level)</li>
      <li>if you are publishing <strong>statistics</strong> the data must be published in a format for tabular data (which can include Excel at the pilot level)</li>
      <li>if you are publishing <strong>geographical data</strong> or any other kind of structured data, it must be published in a structured data format (which can include JSON, XML or CSV at the pilot level)</li>
    </ul>
    <h3>Social Requirements</h3>
    <p>To achieve a pilot certificate, you must provide technical documentation about the data to help people understand it with a URL for this documentation.</p>
  
    <p>You must also provide instructions for people to contact you:</p>
    <ul>
  
negative.code:   <ul>
      <li>If you are using data from elsewhere, you will need to check the licence of that data to ensure you can republish it. If it is open data, you're OK.</li>
      <li>If you are crowdsourcing data, you may need to check that the contributors to that data have given you permission to reuse it through a <a href="http://en.wikipedia.org/wiki/Contributor_License_Agreement">Contributor Licence Agreement</a>.</li>
      <li>If the rights are complicated or unclear, for example, because the data includes other data which hasn't been clearly licensed itself, you can still achieve a Bronze certificate.</li>
      <li>There is more guidance in the <a href="http://theodi.org/guides/publishers-guide-open-data-licensing">ODI's Publisher's Guide to Licensing</a>. If in doubt, we advise you to consult a lawyer.</li>
    </ul>
  
  