I live in Zagreb in Croatia, so most of the track are from there and my travels.
I got involved with OpenStreetMap on 17.7.2008, and I love the idea of openly available information for any use like this (and am very careful of half-open stuff like google maps).
Public domain
All my contributions to OpenStreetMap are released into the public domain. This applies worldwide. In case this is not legally possible, I grant anyone the right to use my contributions for any purpose, without any conditions, unless such conditions are required by law.
Attributes
This user submits data to OpenStreetMap under the name Matija Nalis.
This user submits data to OpenStreetMap under the name mnalis ALTernative.
Mnalis is on the OpenStreetMap Community forum as @Matija_Nalis.
I've also worked on adding Bittorrent support to OSM,
and made an My-Notes (tool to make it easy to find your still unresolved notes - it would be great if OSM default Notes tab would be made more functional in that respect)
Contributing some Quests and Croatian translations for StreetComplete and SCEE.