On: Osm-p2p: a peer-to-peer distributed OpenStreetMap ...

[chippy]

The project seeks to both accept OSM.org data and to contribute back:

>Here’s what we would like to have soon, to better interoperate with the rest of the Open Street Map ecosystem:

   > import public osm data from a region into osm-p2p
   > export osm-p2p edits back to public open street map