This was due to the cloudfare outage few days ago, i guess . I wish we could get a good explanation of what really changed the price?
Coindesk uses various exchange to fetch pricing data from, so if one of these exchanges is down for whatever reason, their own index might not function correctly anymore and show invalid pricing data.
Could a more serious Internet outage cause an actual collapse in price of bitcoin.
I doubt it. Flash crashes are called that for a reason-- bots buy up the market as fast as it went down. It's a dream for people to buy Bitcoin at double digit rates, but more than a dream it will not be.
Also, there are so many exchanges around the world that it's near impossible to see every single one of them mess up somehow and go doww. That's the beauty of how distributed the ecosystem around Bitcoin is.