The dataset is freely available, while licence policy is respected
The dataset is available under the Open Data Commons Open Database License (ODbL) licence in a geopackage format.

You must give appropriate credit, provide a link to the license, and indicate if changes were made.(for example, "©, 2020")

ShareALike means If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.

Petersburg version from 06.01.2021, 1302 user corrections, log

Vladimir, version from 25.10.2020, 125 user corrections, log

Kazan, version from 01.05.2021, 241 user corrections, log

Moscow,version from 10.06.2021, 1458 user corrections, log
Yekaterinburg,version from 01.05.2021, 402 user corrections
Voronezh,version from 08.04.2021
Kaliningrad, version from 04.07.2021, 157 users' corrections, log

Data used for project:
Open data by The Federal Service for State Registration, Cadastre and Cartography (Rosreestr)
a collaborative project to create a free editable map of the world.
Open data by the Ministry of Culture of the Russian Federation
a multilingual open-content collaborative map, where anyone can create place tags and share their knowledge.
website about the architecture of houses in Saint Petersburg.
the machine-readable open data portal of Saint-Petersburg