What is the largest transaction by value to date for bitcoin currency? As the title asked - what is the largest transaction by value to date?
Probably this one, 550,000 BTC transferred at one time.


http://blockexplorer.com/tx/29a3efd3ef04f9153d47a990bd7b048a4b2d213daaa5fb8ed670fb85f13bdbcf


Now the question, was it a transfer from one person to another, or was it a transfer simply to, for example, another wallet once the passphrase encryption feature was made available.