I have been thinking about this for awhile, made a note about it back in march.  Using NOSTR for a web of trust for finding a betting partner who always pays their bets when they lose would be perfect. NOSTR's openness would be great for keeping people accountable.

https://primal.net/e/note1n4vtl9eyq5ful26skyczvdte4wll0qgqdzw6mkxhpncklcjjj9sqr3qy9n