how transparent are the bitcoin casinos in terms of the software specifically slots they are running,

I know for "real money" casinos I thought I better quote that to avoid a backlash, there is a big move for them to start running the lower RTP (Return to player) versions of the slots - this is provided at the software developer level where they have a range of different RTP settings which doesn't sound like much but a few percent difference is essentially the house edge increasing, and overall you losing money quicker.


They have to be very transparent about these values, listed on-site and in-game files info too, I just wonder whether this has spilled over in bitcoin casinos yet? and how they are choosing the versions (hopefully still the highest versions)