Online Chopin Variorum Edition (OCVE)An eighteen-month pilot study for the OCVE project was supported by the Andrew W. Mellon Foundation in 2003–04, followed by three developmental phases (2005–09, 2011–15, and 2015–17). The OCVE site currently comprises c. 6,000 digital images of individual pages of primary source material of the music of Fryderyk Chopin, comprising music text and other elements of manuscripts, first editions, and later impressions produced during Chopin’s lifetime or after his death, along with associated metadata.
https://chopinonline.ac.uk/ocve/about/