Sidorkin was born in the village of Lebiazhye (Russian Federal Republic). He studied at an art school in Kazan (1946-51), at the Academy of Arts in Riga (1951-52) andthe Repin Institute of Painting, Sculpture and Architecture in Leningrad (1952-57). From 1957 he lived and worked in Alma-Ata.
Sidorkin was one of the most eminent graphic artists in Kazakhstan. He took his inspiration from folk art, legends and the history of the Kazakh people. The cycle On Reading Saken Seifulin is thematically connected with the poems of this classic of Kazakh literature. Its imagery is in full consonance with Seifulin's poetic symbolism. The close-up treatment of the figures and faces, a certain roughness of the pictorial surface and the original composition make Sidorkin's characters look like ancient stone statues.