On January 16 of this year, the Peruvian company Guiacalles requested to delete private data that was added in OpenStreetMap without considering the copyright.
This copyright infringement was due to an import of data by TELCOM IP that was carried out in Peru 7 years ago. Since it was impossible to verify the original license of the imported data, the DWG did a redaction to delete the original data. This affected 28 cities of the country, removing everything from main streets to pedestrian streets, and loosing all the edits of the OSM community that were made on top of that data in the last 7 years.
Post redaction view - JOSM editor
Our workflow during and after the redaction
The #osmPe channel on telegram was the main communication channel for coordination of the whole redaction process, as well as tickets in the repository of osm-peru-redaction.
As soon the redaction finished, DWG posted a task with the affected areas. Based on this, the community documented a workflow that allowed us to coordinate the mapping and restore the map to its old state.
Task to review and map the removed highways from Peru
Mapping workflow to restore and add highways name
What should we keep on mind?
OpenStreetMap is a collaborative project that any user can contribute to, but we should always make sure that all the added data has a license compatible with the Open Databases License. These reversions are detrimental to all those who contribute and use OpenStreetMap. Many data was lost which leaves our maps in bad condition.
On a more positive note, it does speak to the strength of OpenStreetMap that we were able to recover from this redaction in such a short time. The community came together to add and modify 96,000 highways throughout the country, leaving the map in a better place than it was before.