[Saigonautica]

I have a mildly entertaining story for you! We have something just a little like this in Viet Nam.

It's designed as a public good that lets you look up businesses by their tax ID. It's mandatory for the company owner to put their phone number and address there. The address is periodically verified by an actual person. It gets scraped heavily, and inserted into a whole sub-genre of similar websites with mostly identical features but with faster and better search. I've even seen people print it out to make "phone books" that are sold at trade shows!

As you might expect, the resulting increase in (fairly sophisticated) scam calls makes me unlikely to pick up my phone. So I'm not actually reachable there with a call, but I might get a text! For my websites, registrar info for those ties in to the system above using digital signatures. So using only a domain name, you get the company license, a theoretically valid phone number, and a very probably correct address.

It's a mix of good and bad, but overall I really like the system. Looking up other companies before doing business with them has saved me and my colleagues from a number of bad deals, e.g. not the real company owner, or misrepresentation of the scope of their company license.