Unable to unpack tar.gz archives:
alex@ocv-min:~$ tar xvzf bitcoinpurple-source.tar.gz
gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
alex@ocv-min:~$ tar xvzf bitcoinpurple-source.tar.gz
gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
This is dead, dev is gone. He dumped what he had, made a few bucks and left.