<p>It is a bit work to figure out the ownership structure of companies
in Norway. The information is publicly available, but one need to
-recursively look up ownership in all owners to figure out the complete
+recursively look up ownership for all owners to figure out the complete
ownership graph of a given set of companies. To save me the work in
the future, I wrote a script to do this automatically, outputting the
ownership structure using the Graphviz/dotty format. The data source
I failed to find a useful source directly from the official keepers of
the ownership data, <a href="http://www.brreg.no/">Brønnøysundsregistrene</a>.</p>
-<p>To get a owner ship graph, fetch the code from git and run it using
-the organisation number. I'm using the Norwegian newspaper Dagbladet
-as an example here, as its ownership structure is very simple:</p>
+<p>To get an ownership graph for a set of companies, fetch
+<a href="https://github.com/petterreinholdtsen/brreg-norway-ownership-graph">the code from git</a> and run it using the organisation number. I'm
+using the Norwegian newspaper Dagbladet as an example here, as its
+ownership structure is very simple:</p>
<pre>
% time ./bin/eierskap-dotty 958033540 > dagbladet.dot
<p>To view the ownership graph, run "<tt>dotty dagbladet.dot</tt>" or
convert it to a PNG using "<tt>dot -T png dagbladet.dot >
-dagbladet.png</tt>". This is the result can be seen below:</p>
+dagbladet.png</tt>". The result can be seen below:</p>
<img src="http://people.skolelinux.org/pere/blog/images/2015-06-15-ownership-graphs-norway-dagbladet.png" width="80%">
data in the official ownership register, as that name is not
registered in the official company register for Norway. The ownership
register is sensitive to typos and there seem to be no strict checking
-of the ownership information.</p>
+of the ownership links.</p>
<p>Let me know if you improve the script or find better data sources.
The code is licensed according to GPL 2 or newer.</p>
+
+<p>Update 2015-06-15: Since the initial post I've been told that
+"<a href="http://www.proff.dk/firma/carl-allers-etablissement-aktieselskab/københavn-v/hovedkontorer/13624518-3/">Aller
+Holding A/S</a>" is a Danish company, which explain why it did not
+have a Norwegian organisation number. I've also been told that there
+is a <a href="http://www.brreg.no/automatiske/webservices/">web
+services API available</a> from Brønnøysundsregistrene, for those
+willing to accept the terms or pay the price.</p>