Someone asked me in PM, if I want to invest in a WSOP player, something like that. - Not exactly.
I am looking for an online marketplace similar to https://www.chipmeup.com but where I can bet on players by bitcoin. I understand the market may not be there, yet. So, maybe later.
Could always start it yourself via google spreadsheet or via a forum thread even. There are probably many bitcoin players who want to be staked, tracking if they are any good might be harder.