This is ground truth based on the Padeřov Bible (Vienna, Austrian National Library, shelfmark Cod. 1175, 1432–1435), the bible of the third redaction of the Old Czech Bible translation. The transcription rules were based on semi-diplomatic transcription rules set by PERO OCR and Směrnice pro vydávání starších českých textů by Jiří Daňhelka (https://vokabular.ujc.cas.cz/moduly/edicnipoznamka.aspx?id=DanhelkaSmernice). Abbreviations were tagged and expanded. Ground truth was created specifically by Anna Michalcová (Czech Academy of Sciences, Czech Language Institute, final check of the transcribed text with the use of her model trained on the Cistercian Bible, New York, The Morgan Library & Museum, shelfmark MS M.752, a.michalcova@ujc.cas.cz), Kamil Bazelides (Comenius University in Bratislava, Faculty of Arts, 4r–8v), Jan Hajič (Czech Academy of Sciences, Masaryk Institute and Archives, 194v–199r), Eliška Pěnkavová (the University of South Bohemia in České Budějovice, Faculty of Arts, 199v–204r), Laura Maniaková (Masaryk University in Brno, Faculty of Arts, 204v–209r), Hana Kreisingerová (Czech Academy of Sciences, Czech Language Institute, 227v–229r), Jitka Filipová (Czech Academy of Sciences, Czech Language Institute, 355r–359v), Chi-hung Lu (Eötvös Loránd University, Faculty of Humanities, 366r–370v) and Martina Dvořáková (Moravian library in Brno, 373r–373v). Produced within the HTR Winter School 2022.