Dr Wright’s White Paper LaTeX Files purport to call on a package entitled “fontspec” {e.g. at {L21/9.1/2}} to set custom fonts.

Dr Wright contended that he had compiled the Bitcoin White Paper in LuaLaTeX {Wright8 [32-35] {E/23/13}, Wright8 [70-73] {E/23/20}, Wright cross-examination {Day5/143-146} and Rosendahl cross-examination {Day17/31:12-13}}. As Mr Rosendahl noted, fontspec did not work with LuaLaTeX in March 2009 when Dr Wright had supposedly compiled the Bitcoin White Paper from the White Paper LaTeX Files {Rosendahl1 [124] {G/7/43}}.

It would accordingly not have been possible for Dr Wright to have used LuaLaTeX at the date of the Bitcoin White Paper, without a custom version of fontspec {Rosendahl1 [126] {G/7/44}}. Mr Rosendahl provided a detailed explanation of the difficulty that would have been involved in creating such a custom environment at Rosendahl1 [127] {G/7/44}.