Just wanted to let everyone know that I published a paper on the subject of Otzi’s belt. It was published in the Spring 2013 issue of the Bulletin of Primitive Technology #45.
The Society of Primitive Technology does amazing work, so I hope you will consider subscribing to their publication. Their website it located at http://www.primitive.org
Here is a quick video demonstrating how Otzi’s belt might have worked (using modern materials!). A very fast and ingenious system indeed: