If you do a little blockchain analysis you will get this one:
1BQ9WZC9TiJhC4pgHwrrfQbFHZfhEYzFa6 <- 15ggdnPV1Q5abMMQK4bmZfDHaNb3VkrYk8
15ggdnPV1Q5abMMQK4bmZfDHaNb3VkrYk8 <- 1P81pKLfACaqsHXRXYtPwFSfAWihD4rqSo
1P81pKLfACaqsHXRXYtPwFSfAWihD4rqSo <- 1A1tMXLz6APF3C7hoeZzwEG3M28MTN47Jy
1A1tMXLz6APF3C7hoeZzwEG3M28MTN47Jy <- 1Jebh5f6LV1C8C3dqXAmQt628dJAZwPFwr
1Jebh5f6LV1C8C3dqXAmQt628dJAZwPFwr <- 126V2RtDqCqc8JWpY1xrEGHHHfZJ4mcRL2
126V2RtDqCqc8JWpY1xrEGHHHfZJ4mcRL2 <-
18ytWEKvfMTmvXkkAykZw7stq4aLiNSGyr18ytWEKvfMTmvXkkAykZw7stq4aLiNSGyr is/was a cold storage address by
BTCTurk.com.
(
https://bitcointalk.org/index.php?topic=249766.msg9951316#msg9951316)
Ask them if they control
1BQ9WZC9TiJhC4pgHwrrfQbFHZfhEYzFa6.