Is solipsism true such that I am the only observer?

Prediction market on manifold. Resolves once it's possible for both me and others to verify, or N/A if that's impossible My prior on solipsism being true for me is probably higher than yours, which would focus on yourself, given you would have access to your observations. Therefor, it's a unique opportunity for me (and you) to profit in our expectations.

Liquidity: $1,000. Resolves: 1/1/10000.