Panoramio described at URL: https://web.archive.org/web/20161020100851/http://www.panoramio.com/photo/50240615 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161020002643/http://www.panoramio.com/photo/50505484 determination method or standard: SHA-1...