Katja Stuke is part of the The Crown Letter Project, an online participatory art project created during the first Covid lockdown founded by French artist Natacha Nisic.

A worldwilde open platform of women artists. a meeting place for a community of subjectivities.
The Crown Letter is released every Tuesday since 21st April 2020.

The Crown Letter Project participated at the Photo Days in Paris in August 2021, was part of Photo Days at Fondation Fiminco 2021 and was part of Bienale Sur Centro Cultural Córdoba. The Crown Letter also was exhibited at the Institut Français in Kyoto as part of KG+.