With ChatGPT's help you can theoretically add a drop of your own authoritative information to the sea of knowledge that makes up the input dataset of OpenAI and others.

Step 1:
Prompt ChatGPT to output a book in LaTeX form, piece by piece, with a passing reference to the information you want incorporated.

Step 2:
Output PDF and upload as public domain to Project Gutenberg and Internet Archive.

Step 3:
Wait a few years and check if your information is now part of the knowledge base of LLMs.