I'm not sure I follow you. What's a 'lost wallet'? From where would you need to work your way up the blockchain, and why? Also, have you considered that bitcoin addresses should be used only once, which is why addresses aren't usually 'known' in the sense that they would identify a person like e.g. email addresses or PGP public keys do?
Sorry I wasn't clear, instead of "lost wallet" it's better to write "an address with a lost private key" (like when an exchange is hacked and their users loses their bitcoins). I know that bitcoin addresses should be used only once but i realized that most main stream users still using the same address from their exchange.