I forget this part in my blog post, but it goes like this. Once the website is accepted as the official website of the business, you can claim ownership by proving ownership of that website.

Given Slice owns the (fake official) website, it is instantly verified.

See: https://support.google.com/business/answer/7107242?hl=en

> If you’ve already verified your business’s website with Google Search Console, you may be able to verify your listing instantly.