Recommendation 'The (New Zealand) IRD accepts cryptocurrencies for the payment of taxes.'
This 148 page report by the Law Foundation of New Zealand is one of the most comprehensive explanations of blockchain I have ever read. I would say it is a textbook. For people new to this technology it will be a 2-3 hour read, but by the end readers will have a good grasp on most of the key aspects of the subject.
New Zealand out punches its weight in many areas...if the NZ Govt. follow the recommendations in this report, it is possible that they could become one of the leading blockchain development centres in the world...
The report is accessible here.