Bryan Caplan writes,

By popular demand, I’ve created a publicly-viewable wiki for my Complete Bet Inventory. From now on, I’ll edit it when I make new bets or when old bets resolve.

To repeat, my track record now stands at 20/20. Twenty of my bets have come due, and I have won every single one of them. [...]

Will I lose eventually? Almost surely, because I’m going to keep betting. And if I live long enough, my superior knowledge and judgment will probably fade away. I know, moreover, that pride goeth before the fall. One of the best ways to start losing bets is to dwell on “my superior knowledge and judgment.”

When will Bryan Caplan first announce that he lost a bet?

This question resolves on the date which Bryan Caplan first publishes some sort of information publicly which indicates that he lost a bet. Acceptable public mediums include, but are not limited to, Twitter, his blog, and his public posts on his Facebook wall. A note in which he says that he will lose a bet that has not yet resolved does not count as a declaration that he has lost a bet.