I just happened to see this thread, and would like to join in as someone who has been betting at a very high level for over 15 years.
First of all, I have to say that any theories about the odds being "wrong" in an event like MLB are ridiculous. It is not a small market like the Bulgarian second basketball league, but a market that can absorb millions of dollars without any problems.
Therefore, it is a real mystery to me why the author of this thread made such a bet at any crypto casino, instead of for example at Pinnacle where a click is probably $50.000 and more.
What BC.game did is just an demonstration that anyone on the internet can open a casino, get a license for a few thousand dollars, invest in promos also few thousands, and in this way literally rip off anyone for any amount. There is absolutely no valid explanation for voiding someone's winning MLB, NBA, NFL, or any other big-market bet.
If I can help the author in any way, I would be very happy to do so, and the advice for the future is to play such bets at places like Pinnacle, Asian agents like Sportmarket, etc.
As a succesful bettor, you must know that to remain profitable in the long run, it's vital to always have a few (at least 5) bookies open at the same time to be ready to grab the best out of those 5 available to place your bet on. In this case BC.game was the best available for me. But not so far off that the odds can be considered wrong. Sometimes Pinnacle is the highest, sometimes another, sometimes another and sometimes another. It's just kind of random and business as usual, until they started voiding this bet.