Inspiration

Industrial deals in Texas spend 30 to 90 days in due diligence. Much of that time goes to confirming the paperwork: is this the current survey, the latest environmental report, the title commitment everyone approved? Each report runs on its own clock, versions change mid-deal, and someone re-checks it all by hand before closing. With DFW building more industrial space than any other US market (33.9M sq ft under construction, CBRE Q3 2026), we wanted to take the waiting out of that step.

What it does

FortLedger turns the slowest part of a real estate deal, confirming the paperwork, into a one-click check.

It fingerprints every diligence document for an asset: title, survey, zoning, environmental reports, leases, rent rolls and operating costs.
It records those fingerprints on chain.
One click verifies the whole data room in a few milliseconds. If any file has changed, it fails and names the exact document.
It flags environmental reports that are past the 180-day ASTM viability window.
The documents never leave the owner's machine. Only fingerprints go on chain.

How we built it

Hashing: Node.js with SHA-256 fingerprints each file. The records are built into a deterministic manifest from a catalog of approved documents.
On chain: A small Solidity contract on a local Hardhat chain anchors the manifest hash as a non-transferable asset-record token.
App: A lightweight web app runs Verify, Tamper and Restore so the check can be shown live.
Testing: Tests cover hashing, tampering, verification and the contract. A benchmark tampers with files 20 times and measures detection and speed.
Tools: ChatGPT and Hermes Agent for early research and prototyping, and Grok Bot and Cursor for the final build.

Challenges we ran into

Being honest about speed. The reports themselves don't get faster; what gets faster is confirming they're current. We had to frame the pitch carefully and not invent an hours-saved number.
Defining what "Verified" means. It means unchanged since recorded, not proof the document is true. Getting that wording right mattered for lawyers and title companies.
Security for a regulated industry. We thought through the risks of putting hashes on chain and kept the real documents off chain.
Realistic test data. We built synthetic diligence documents and tracked document versions, like an old environmental report superseded by a new one.

Accomplishments that we're proud of

20 out of 20 tampered files were caught, and the right document was named every time, in a few milliseconds.
It works fully offline, so it runs anywhere, including a live demo stage.
Every figure in our pitch is sourced, and the demo is upfront that the asset is synthetic.
The token is a record, not a title: it can't be transferred or traded.

What we learned

How Texas commercial diligence actually works, and where the time goes.
How ASTM's 180-day rule shapes deal timelines.
That the people we'd sell to care more about time and trust than about blockchain itself.
That in this market, a clear and honest scope wins more trust than a big claim.

What's next for FortLedger

Run a pilot in one real Fort Worth industrial deal room and measure the hours saved on document and version checks.
Integrate with the data rooms and title workflows that brokers, lenders and title firms already use.
Add AI extraction of key facts from each document, with source citations.
Move from the local test chain to a permissioned or public network.
Expand to other Texas markets, then other fast-growing industrial metros.