Since most of you guys who post here are gamblers, may I ask you: how many of you take screenshots of their deposits on casinos?? OP did?
Speaking generally i never took screenshot of my deposit in the gambling casino. Also why should be take screenshot when everything is visible in the deposit history. Still if you do not trust the gambling site and think they can manipulate with the deposits, the blockchain data will reveal everything.
Also, these days it is very easy to manipulate and tamper / edit the screenshot to produce a fake one, so i think that transactions on the blockchain are the safest way to provide the proof of deposits.
I have doubts here, I don't know what to do now, when we enter a casino it is better to take a screenshot just in case, that is not a bad thing, it is a very good security measure, and it could be taken as infallible to withstand any claim, it is difficult because sometimes the blockchain should be enough, but in this case I like that option, also when making withdrawals one should take a screenshot pro if they reject it, it is always good to do something like that to be able to have more security, although I think one thing, when they are going to scam you they do it so you have all the screenshots from when you registered on the site.