The only extant near-contemporary source for BWV 565 is an undated copy by Johannes Ringk. According to the description provided by the Berlin State Library, where the manuscript is kept, and similar bibliographic descriptions, e.g. in the RISM catalogue, Ringk created his copy between 1740 and 1760. As far as known, Ringk produced his first copy of a Bach score in 1730 when he was 12. According to Dietrich Kilian, who edited BWV 565 for the New Bach Edition, Ringk penned his copy of the Toccata and Fugue between 1730 and 1740. In his critical commentary for Breitkopf & Härtel's 21st-century revised edition of the score, Jean-Claude Zehnder narrows the time of origin of the manuscript down to around the middle of the first half of the 1730s, based on an analysis of the evolution of Ringk's handwriting. At the time Ringk was a student of Bach's former student Johann Peter Kellner at Gräfenroda, and probably faithfully copied what his teacher put before him. There are some errors in the score such as note values not adding up to fill a measure correctly. Such defects show a carelessness deemed typical of Kellner, who left over 60 copies of works by Bach.