Hi,
Such a question i have some bitcoins and sometimes i use strategy arbitrage betting https://betting.betfair.com/what-is-arbing-arb-betting-explained.html or https://napalmbet.com/arbitrage-betting.html. Actually more for fun, than for money, because i'm afraid to invest large sums.
And I think maybe there are bookmakers that use bitcoins, and whether there are arbitrage opportunity between them, did anyone meet with such?