documented
Concise Oxford English Dictionary © 2008 Oxford University Press:
document
▶noun /ˈdɒkjʊm(ə)nt/ a piece of written, printed, or electronic matter that provides information or evidence, or that serves as an official record. ▶verb /ˈdɒkjʊmɛnt/ record in written, photographic, or other form.
– derivatives
documentable adjective,
documental /-ˈmɛnt(ə)l/ adjective,
documentative adjective.
documentable adjective,
documental /-ˈmɛnt(ə)l/ adjective,
documentative adjective.
– origin ME: from OFr., from L. documentum ‘lesson, proof’ (in med. L. ‘written instruction, official paper’), from docere ‘teach’.
'documented' also found in these Oxford entries:

