I think you are misleading investors that investing is Provably Fair is a bit manipulative.
These games are only Provably Fair proveable fair to players, these investing sites are currently not Provably Fair to investors. (besides maybe PF to you and devan, but it is definitely not PF to me if I invest.)
Investing is not Provably Fair by math. Period. Please consider changing this.
How is it misleading if it says right there in that Google snippet: "Assuming you trust the two [bustadice and auditor] not to collude".