For .gov, gov.uk, etc. specifically, it's not that hard of a problem. You can't sign up for those TLDs if you're not a government, so browsers could decorate the URL bar for them. Then you just need to teach people e.g. that the URL bar should turn green whenever interacting with any government, and governments at all levels should use these restricted domains.
You could do a similar thing with banks. Require them to use a .bank TLD (or .bank.us, .bank.uk, etc.), only let actual, regulated banks register them, and give them special decorations. Use eminent domain if those domains are already taken.
Unlike EV cert validation, it would actually mean something if you restricted decorations to specific known regulated groups.
You could do a similar thing with banks. Require them to use a .bank TLD (or .bank.us, .bank.uk, etc.), only let actual, regulated banks register them, and give them special decorations. Use eminent domain if those domains are already taken.
Unlike EV cert validation, it would actually mean something if you restricted decorations to specific known regulated groups.