Qiushi DSH Evidence Audit: Leaving Locally Verifiable Hash Chain Evidence Receipts for DeepSeek Harness

Qiushi DSH Evidence Audit is a community-maintained observation plugin for the DeepSeek Harness (DSH), designed to preserve runtime observation points without leaking plaintext sensitive information. It generates deterministic, hash-chained JSONL evidence receipts by listening to the official `tools/result` and `session/event` extension points. The plugin strictly adheres to the "observation-only" principle: it does not modify prompts, tool parameters, or results, nor does it store plaintext Session IDs—it only records event categories, timestamps, and SHA-256 hashes of key data. Its core mechanism involves constructing a tamper-evident local evidence chain: each entry contains a sequence number, timestamp, and forward/backward hash links. Upon startup, the plugin verifies the integrity of existing files, and if chain tampering is detected, it promptly issues an alert.