Re:Show HN: Go Freaking Do It – Smart contract for reaching ...
by joshschreuder on Monday December 04, 2017 @04:24PM
(#15847643)
I think there is an Oracle problem here with trying to bring in data from external services
https://www.slideshare.net/mobile/InfoQ/blockchain-the-oracl...
For example: 1) Run 10K on Strava. 2) Solve programming challenge on Codeforces/TopCoder. 3) Pass coursera class. 4) Have X bitcoins on your wallet 5) Check-in in some specific location.