I wonder what was the oldest brainwallet ever found. Vasek reported this one in her paper: "This string contains 0.25 BTC hiding in plain sight." -> 1AJ3vE2NNYW2Jzv3fLwyjKF1LYbZ65Ez64
It has been used for the first time on 2011-07-14.
The story behind it here:
https://bitcointalk.org/index.php?topic=28877.0So it does seem the "This string contains 0.25 BTC hiding in plain sight." was indeed the very first one.
it would have had to have been because most of the people in that thread seeemed totally clueless about how. except the person that lifted the funds in the first 5 minutes.