| August 2021 | ||
| 15/08/21 | The alliance O2F (today: czsk) was founded. | |
Founding members::  Marinko018 and  dagda. | ||
 The alliance reaches a population more than 100. | ||
| 18/08/21 | The alliance reaches a population more than 1,000. | |
| 23/08/21 | Deletion of:Marinko018. | |
| 25/08/21 | Deletion of:dagda. | |
| November 2021 | ||
| 30/11/21 | The alliance is now known as czsk. | |
Joining of: Blondak 1, tabky and Lucius. | ||