I'll get downvoted for mentioning any crypto-thing, but I think this might be doable with Augur (which is an actual live product, not some crypto-vaporware, tho

I'll get downvoted for mentioning any crypto-thing, but I think this might be doable with Augur (which is an actual live product, not some crypto-vaporware, though not particularly easy to use in its 1.0 state)