I was right (.fyi) is a weird little tool that lets you make public predictions for anything from the Super Bowl to Game of Thrones and 'I told you so' moments with friends.
Predictions are final; they can never be edited or deleted.
A prediction market protocol built on top of Ethereum
Augur is a decentralized prediction market built on the Ethereum blockchain. It allows you to forecast events and be rewarded for predicting them correctly.