Teams are pointed to http://bit.ly/2lZMxrZ where they find an image: jchase.com/spy.jpg
[Solution: Teams realize the boot is a map of Italy, and then they match up Fibonacci’s (Leonardo de Pisa) birth/living place with the corresponding location on the map. Zooming in on this place shows the number 314, the location for the next puzzle. ]
“Don’t let the Greek Nationalists trick you about the true origin of Archimedes” This leads people to zoom in on Syracuse on the map, which has a star.
Another star is in the comments in the EXIF data for the image when you download it.