What is the easiest and probably the cheapest way to hide a .us domain ID (name, address, etc) behind a legal name (company name)? is this considered a "company name registration" ?
What are you trying to do? What is your business? right now without more info you are sounding kinda scammy.
I thought I'm clear on this. what I mean is, some domains (like .us) you can NOT hide your name and address (like .com with WhoisGuard), so I thought why not register a company name and provide it for your whois info like the companies do!
I don't know the laws in Ireland but down here in NZ if you register a company the directors names (ie yours) are searchable in the online companies registers and there are obligations to submit end of year accounts even if you aren't trading. It might be cheaper just to find a .com that you apply privacy to. Or stop being so paranoid about people finding out who is behind the site... what have you got to hide?
you may call it paranoid, but I'm a bit privacy-freak. the bad thing is people always think that you're doing some scam. and the business obligations like end-of-the-year accounts, I think is very serious, and I presume there's probably obligation tax-wise in US too, maybe even when you haven't monetized!
And that may be the OP's stance too but if you want to do business you have to give up some of that privacy. Lets say you want to open a shop - neighbouring tenants are going to want to know what you sell, who you are etc. Customers are going to ask if you are a "pop up" or permanent, if they can trust that warranty or if you'll be around to do an exchange if there is a problem with the colour and all that kind of stuff. Some old lady is going to gossip about how she and your Gran were besties way back when. You're a bit removed from that with online businesses because your actual neighbours probably won't even know that you are in business but there still need to be checks and balances. Ultimately, be proud of your actions and you'll have nothing to hide.
Neustar doesn't allow privacy on US domains, so there is no workaround unless you provide a fake name/address at risk to lose the domain if verified. Besides, while anyone can register a US domain regarding the place in the world people live, those individuals living in America fall in perjury, if a legal action is taken. Here is an article posted at Neustar about privacy issues related to US domains; http://www.neustar.us/stakeholder-council-discusses-privacyproxy-issues/