Evidence rules assume that a recording is, presumptively, a recording of something that happened. That assumption is eroding.

Courts are confronting both fabricated evidence and the 'liar's dividend' — parties claiming genuine evidence is fake. Rules committees are debating new authentication standards.

Litigators need forensic experts on call and a working understanding of provenance technologies such as content credentials.

The integrity of fact-finding depends on getting this right, and quickly.