It should be noted that all we can know about an arbitrary transfer like this is BTC was moved. We do not know if ownership of said BTC changed; people can own many bitcoin addresses.
One of the many wonderful elegant qualities of Bitcoin.
It's actually a very public way of transferring value between endpoints but in a way that lets you "tune" the tradeoffs to just the right mix between privacy/anonymity and full-disclosure, to taste. You can't do that with government/bank/fiat systems.
