Chainlocker is a local, AI-powered eDiscovery tool: document indexing and review for legal discovery and CPA transaction services. It reads every file in a matter or engagement folder, judges each one against criteria you define, and produces a reviewable, court-ready index, without a single document leaving your premises. A chain locker is where an anchor chain is flaked so a heap pays out clean; that's the job.
Your tags and instructions, per matter or engagement. Nothing is hardcoded: a contract review playbook and a diligence checklist are just different criteria lists.
Point it at the shared folder. It lists every file it understands. PDF, Office, email, images, and a dozen more.
Text extraction locally, OCR for scans. AI assigns each document a tag, written reasoning, and a confidence score. Async, and you're notified when it's done.
A person confirms every verdict. Accept by default; reject with a correction. Cheap to review at volume, and every decision is recorded as structured data.
A self-contained package: the documents, the Excel index, and an HTML viewer that works with no server and no network.
Every matter gets its own tag list and instructions. The tool adapts to the work: a document production, a deal folder, or anything shaped like "sort these documents against what matters."
PDF, Word, Excel, PowerPoint, email (.msg/.eml), text, CSV, XML, Markdown, and images including TIFF scans. Digital files are extracted directly; scans go through OCR.
Every judgment carries written reasoning and a confidence score, with a minimum-confidence threshold you control. Below the floor, a document goes to review instead of being filed. No black-box tags.
The index is an Excel file your team already knows how to use, one row per document, with a clickable link straight to the file.
Corrections aren't thrown away. Every human verdict is captured as structured data and used to make the model better at your kind of work.
The export opens straight off a laptop or USB drive, no app, no internet, no absolute paths. Built for the courtroom, where wifi isn't a given.
Run your review playbook against a production the same way every time: tag documents against the matter's criteria, flag what was found and why, and hand the court an index you can defend, fully offline. Legal judgment stays with the lawyer.
Chainlocker for law firms →Transaction services and due diligence: point it at the deal folder and get every contract, statement, and side letter tagged against your diligence checklist, with reasoning attached.
Chainlocker for CPA firms →Forensic accounting, internal investigations, insurance claims. The criteria are yours per engagement, so anything shaped like "sort these documents against what matters" fits.
Tell us about the pile →The tool runs on a dedicated machine installed at your office and is reached from a browser on your LAN or private VPN. AI inference runs on hardware we own, over an encrypted private network; both ends of the wire are accountable to you by contract. No third-party AI APIs means no metered usage: the cost is fixed, however big the folder.
Ask us about the deployment model →Radtke Fournier CPAs is an example firm built on example data. The live product reads documents on your own premises.
Open the Review tab and click through the documents, or press J and K to move between them.
We're targeting availability by late 2026. Chainlocker ships once it has survived real matters, not before. If your firm drowns in document folders, tell us what the pile looks like and we'll tell you honestly whether this tool will help, and when.