Um, thats not true. A verified bot doesn’t have a better Kraken API rate limit.
kraken doesn’t have a rate limit, other than “please don’t be a dick” and pinging the end point once per minute is fine, as you gotta take into account caching (stuff may not appear on the API for ~3 minutes)
The bots in question ping the API end point just like the rest of us. Or we use a chat_login for the broadcaster, (in the case of custom/secure/safe bots)