Pray tell, how might you get them to trust your signing key? Do you just email Mr. Pichai and ask nicely, is that enough?
I would try reaching out to the Recaptcha team so you can create a legal contract around what guarantees and compensation are needed to get your key trusted.
I would try reaching out to the Recaptcha team so you can create a legal contract around what guarantees and compensation are needed to get your key trusted.