Updated 4 Oct 2026. This post was first published on 26 Apr 2026. That version reported a day-41 result before day 41 could have arrived, put the business in the wrong neighborhood, and described directory work, publishing and citations on other engines that were never recorded. It has been rewritten so that every statement below can be checked. The timeline is given in days from launch, because the launch date and the date of the day-41 check are not on record.
Forty-one days after its website launched, Brooklyn BJJ Lessons was cited by ChatGPT for the first time. This post covers what the site had at that point, what was added later, and what one citation can and can't tell you.
Disclosure: Brooklyn BJJ Lessons is my own practice. I'm the instructor, and I built its site through Signal. This is Signal's work on a business its founder runs, not a result for an outside client, and it should be read that way.
The result
The day-41 citation was my own check. I didn't keep a screenshot or a transcript, and the evidence ledger records it that way: as my own check, not a documented one.
The first documented check came later. On 8 Sep 2026, ChatGPT named Brooklyn BJJ Lessons first of five for "BJJ private lessons Brooklyn" and named it as the pick, with the site itself as the cited source. On the same day, Google showed no AI Overview for that prompt. Both are single-day spot checks, logged with a transcript or screenshot on the ledger. Neither is a ranking.
The business
Brooklyn BJJ Lessons is one instructor, me, teaching private Brazilian Jiu-Jitsu lessons at Darfight Martial Arts, 130 Brighton Beach Ave, in Brighton Beach, Brooklyn. Lessons are one-on-one or with a partner. Before this site there was no website for the business; my Instagram, TikTok and YouTube accounts already existed.
What the site had at launch
- One page covering who teaches, where, when and what a lesson costs, with a booking calendar (Calendly).
- Person and LocalBusiness markup naming the instructor and the Brighton Beach address, and a Service node with the two lesson prices as Offers.
- A blog and an email sign-up (Klaviyo), added two days after work on the site began. The blog started with five articles.
A Google Business Profile was set up alongside the site. It is verified and active.
What came after day 41
Some things often described as part of this build arrived months later, so they can't have had anything to do with the first citation:
- A seven-question FAQ with FAQPage markup, added in August 2026.
- The site's name, phone, address and hours brought into line with the Business Profile, on 28 Aug 2026.
- Weekly publishing to the blog, from September 2026.
What the page states today
As of this update, the page states the facts an engine would need to answer a booking question without guessing:
- Who teaches: me, by name, a purple belt.
- Where: Darfight Martial Arts, 130 Brighton Beach Ave, 2nd floor, Brooklyn, NY 11235.
- When: Monday to Thursday 7–9 AM, Friday 9 AM–12 PM, Saturday and Sunday 9 AM–3 PM.
- What it costs: $100 for a one-hour solo lesson, $50 per person for a lesson with a partner.
- How to book: an online calendar on the same page.
The same facts appear in the markup and on the Business Profile. Some of them have changed since launch, so this is a description of the site now, not of the site on day 41.
How to run the same check for your business
If you want to know whether an assistant names your business, the check itself is simple, and the record-keeping is the part most people skip.
- Write down the exact question a customer would ask, in their words.
- Ask it in the assistant, signed out if you can, and note the date and the device.
- Save the whole answer: a screenshot or a copy of the text, including any sources it shows.
- Record the misses as well as the hits. A record of wins only can't tell you anything.
- Ask again a few weeks later. Answers vary from run to run, so one check is one observation.
We skipped step three on day 41, which is why that result rests on my word rather than on a file.
What one citation can't tell you
One citation can't tell us which part of the build mattered, if any part did. It isn't a guarantee that the same thing will happen for another business, or on another timeline. Assistants vary their answers from run to run, which is why later checks are logged with a date.
As general practice rather than a proven recipe: say plainly who you are, where you are and what you charge; mark up the business and the person behind it; and keep those facts the same on the site and the Business Profile. Those are worth doing for any small business, whatever the engines make of them.