I have one concern about the integrity of this tournament, and a solution to offer.
I've found that a good rule-of-thumb to go by, in contests, is that where there's a prize, there's cheating. Or at least, the possibility of cheating.
There is a not-insignificant amount of money on the table in this tournament, some strangers and near-strangers are likely to participate, and I'd say that this calls for an extra level of security, for everyone's sake.
The dynamics of this particular tournament present a specific, and very easily exploitable, potential cheat: streaming software allows the user to play back a video file in such a way as to make it totally indistinguishable from a live performance, and a person could do this whether on an arcade machine or on MAME. (MAME makes it even easier: put a nice game together, simply run MAME to play back the INP file and voila - you win).
It's just way too easy for a player to run a pre-recorded game and add a little "live" spoken commentary (such as interaction with the chat) to make it seem as though the game is happening then and there.
So I'd like to propose a very simple workaround that would make such a cheat impossible: require the player to, at some point during the submitted game, have Jumpman "signal" the refs.
The signal can be anything - jump three times in a row, park at the top of a barrel screen for 3 seconds, wiggle back and forth on a rivet screen, whatever. Just something specific enough to be unmistakable that a player wouldn't normally do, and that won't run the risk of losing the player a life or any more than 1 or 2 timer ticks.
The key is to have the refs agree on a specific signal of their choosing and keep it a secret amongst themselves until a few hours before the tournament begins, at which point they can reveal it to the contestants.
As long as the player gives the signal at some point during his game (and gives the refs a timecode), then the refs and everyone else will have proof that all games are legit live performances and not recordings.
What does everybody think of this idea?