Trust the Voice, Hide the Source: Anonymous Provenance for Verifiably Edited Audio (opens in new tab)

Audio recordings are often used as evidence, but modern forgery tools make their origin harder to verify. Existing authentication methods require releasing the original signed recording, which exposes sensitive source content as well as provenance information. Redacting the audio avoids that disclosure, but doing so also invalidates the original signature. Revealing the edit operations to prove edit compliance can also disclose the redacted content. This creates a conflict for existing approa...