Despite an internet blackout, some Iranians have managed to use VPNs and Starlink satellite internet to share photos and videos. But how do we know these visuals really show what they claim? CBC's fact-check team breaks down our verification process. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://www.tiktok.com/@cbcnews Subscribe to CBC News on Snapchat: https: