https://www.myfonts.com/fonts/defharo/sextan-cyrillic/

Sextan serif is a Cyrillic typeface family with 10 styles designed for editorial, corporate, advertising or web use. The excellent readability allows the use in long texts, the coherence of forms make these fonts have a great personality.

The fonts have an extra set of lower case letters accessible through the Discretional Ligatures. Also support for Open Type Functions such as Old Style Number, Superiors, Inferiors, Dynamic Fractions, etc. Includes the Bitcoin symbol: b #