How the House Edge could be bigger than 5%? I don't understand. The Hi-Lo game is provably fair, you can change your client seed for every roll while knowing the server seed hash. For 2.0 odds, winning ranges are 0-4750 and 5250-10000 then the RTP is 2.0 x 47.5%=95%
You think wrong. If you always click on hi, only then will you know about House Edge = 15%
Then people would just need to always bet on Lo to easily earn money from the platform. Why didn't you try it? Again the game is provably fair and you can change your client seed wherever you want and check if the outcomes are legit or not. The algorithm is public
How are rolls calculated?
Two strings are created :
STRING1 = "[NONCE]:[SERVER SEED]:[NONCE]"
STRING2 = "[NONCE]:[CLIENT SEED]:[NONCE]"
For your last roll :
STRING1 = "140337:7bd9ed592c64d8b40b6812fe072aa285f19e4d9cfbc74c9e8a02b7f4eb6dd961:140337"
STRING2 = "140337:gDDPjNN4kOL8ztMI:140337"
Then HMAC-SHA512 is used to hash STRING1 with STRING2 as the secret key, giving us a 128 character hex string.
The first 8 characters of the hex string are taken and converted to a decimal.
This decimal is then divided by 429496.7295 and rounded off to the nearest whole number.
This whole number is used as your roll, with the maximum possible value being 10,000.