Bitcoin are just not coins, you could destroy the link to a significant event in just a few steps:
Address A has 50 significant bitcoin
Address A send 50 bitcoin to address B
Address C send 50 bitcoin to address B
Address B send 50 Bitcoin to address D
Address B send 50 Bitcoin to address E
Now answer me this: In which address are this significant Bitcoin?
That depends.
Did Address B have any other bitcoins there before the 50 BTC were sent from A and C?
Did Address D have any other bitcoins there before the 50 BTC where sent from B?
Did Address E have any other bitcoins there before the 50 BTC where sent from B?
Did the transaction that sent to address D spend the output from the transaction that sent 50 BTC from A to B? Or did it spend the output from the transaction that sent 50 BTC from C to B? Or did it spend both outputs? Or did it spend neither output? I'd need to see the actual transaction in the blockchain to answer your question.
Depending on exactly how the transactions were created (which could be traced through the public blockchain), it it possible that address D (or address E) have 100% of the value from the significant bitcoins. It is also possible that the value is split up in percentages between addresses B, D, and E.
