# Diff-Based Tool Traces Line-Level Provenance of Human vs. AI Text Edits

A new approach uses diff-based analysis to track whether individual lines of text were written by a human or generated by an AI, specifically in contexts where agents iteratively edit documents. This provides granular provenance, making it easier to audit mixed human-AI contributions. The technique matters for maintaining transparency and accountability in AI-assisted writing workflows.

**Importance:** 3/5

## Sources

### Technology
- [Hacker News](https://github.com/eighttrigrams/us-vs-them) — Sun, 09 Aug 2026 15:25:29 +0000