State v Amyda
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State of Iowa v. Max Amyda is an Iowa criminal appeal addressing the authentication of video evidence challenged as a possible deepfake. On October 9, 2026, the Iowa Supreme Court unanimously affirmed Amyda’s conviction and sentence, holding that circumstantial evidence sufficiently authenticated the video and that his unsupported conjecture did not raise a genuine question about the original’s authenticity.[1]
Background
Amyda was convicted of third-degree sexual abuse after an August 2024 jury trial. The district court imposed an indeterminate ten-year prison term and a special sentence of lifetime parole. The Court of Appeals affirmed; the Supreme Court granted further review of the video’s admissibility.[1]
Authentication and duplicate evidence
The witness could not personally attest to the depicted event and there was no chain-of-custody evidence connecting the video to Amyda. She nevertheless identified distinctive personal and room details, and surrounding circumstances supported authenticity. The court held that Iowa Rule of Evidence 5.901 permits circumstantial authentication, including distinctive characteristics under rule 5.901(b)(4). Firsthand testimony and the silent-witness approach are not exclusive routes to admission.[1]
The court also rejected the best-evidence challenge under rules 5.1002 and 5.1003. Amyda’s speculation that the video might be fabricated did not raise a genuine question about the original’s authenticity sufficient to exclude the duplicate. The opinion acknowledges deepfake risks and applies the existing evidence rules to this record.[1]
Proposed federal rule
The opinion discusses a possible Federal Rule of Evidence 901(c), under consideration by the federal Advisory Committee on Evidence Rules, concerning generative-AI fabrication challenges. It describes a proposal while deciding the appeal under existing Iowa rules.[1]