The referee, not the vendor.

When an assistant is about to book, call or pay for someone, it needs a dated receipt on the named business: real, at that address, licensed, and when that was last checked. We publish that receipt for every business in a covered market, free, whether the business asked or not. Dated public receipt. We don't approve the booking.

pilot · restaurants flagship · HVAC deep-record Chicago restaurants is the flagship market; Chicago HVAC is second — deep-record proof, same Watching offer. Read the method

Lodestar Stamp is that record. We ask ChatGPT, Gemini and Perplexity the questions customers ask, probe whether each business’s site is readable by machines, verify facts against public registers where we can, and publish a dated receipt for every business in a covered market. Free, whether the business asked for it or not.

We are the agent trust layer: any agent, or any person, can call the receipt before they act. On the record: verified against public sources and dated. We don't approve the booking. Payment never touches the record.

What we are not

We are not an AI-SEO tool. You do not paste a URL in and get a number with an upsell attached. We cover whole markets, we publish the method and the raw captures, and we do not sell the record to anyone at any price. Access to change the record is not a product. That is the entire point.

We sell watching: the baseline briefing, the monthly readout, the change alert, and the weekly digest for your selected business. The public receipt and seal remain free. See them on /watch-sample. Owners and agencies buy the emails, never the record. As agent traffic arrives, a metered Trust API. None of that touches the record.

Two tracks, one rule

Now

People: owners and agencies who want an independent readout while the market is still forming.

Agents: discovery via llms.txt and the MCP card, and a metered Trust API for when software does the shopping.

Always

The charter. Machine-readable from day one. A method anyone can reproduce.

Dated public receipt. We don't approve the booking. Payment never touches the record. Nothing on the record is for sale.

Who keeps the record

Lodestar Stamp · a Banjo Ventures brand

Lodestar Stamp is published by Banjo Ventures. The independence charter is the publisher's: every business in a covered market gets a free receipt, the record is public, and it is not for sale, not to the businesses measured and not to anyone who markets them.

A receipt is only worth as much as the publisher willing to stand behind it. Corrections, disputes, and coverage requests reach a person at watch@lodestarstamp.com. The public loop and its clocks live on /corrections.html.

Where to next

See the Chicago restaurants record

Flagship market — licence and health inspection on every receipt.

Chicago HVAC deep-record

Second market — deeper receipt with visibility proof on the edition.

How it works

Battery, probe protocol, flip rate, publish gates.

For developers

Call the receipt before you act.