Cat-31 · Data Room Diligence

Disclosure Manifest Builder

Hash every file in a disclosure set locally in your browser, build a Merkle-rooted manifest naming exactly what was in the room and when, sign it, and optionally anchor the root at an independent timestamp service. No file leaves your machine.

⚠ This tool builds and signs a manifest. It does not host, store, or control access to any document, and it is not a data room. Files are hashed in memory and never transmitted.

M&A / Diligence Merkle Root Zero PII Client-Side

🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.

Room & Version

Room label

Previous manifest JSON (optional — paste to diff and chain a new version)

Files

Drag files here, or click to choose files
Folder selection supported where the browser allows it — relative paths are preserved when present.