What is the minimum standard for authenticating a bitcoin user. Would it be enough, for instance to verify that someone named "Tom Au" will answer to that name at this email address? Or are more detailed checks required?
Edit: Authentication would mean that I am what I say I am, that I am a human being and not a robot,and that I can do what I purport to be doing (trading Bitcoin).
Is there a public, or central registry for computer users?
In this event, would something as strong as "hashing" be needed for data storage and retrieval?
Would a web of trust concept work for the bitcoin community?