Would you mind explaining the results of the following bets?
869601854
869602054
869602352
869602473
The result of bet id 869601854 is as follows:
{
"id": 869601854,
"game": "Roulette (EU)",
"slot_name": null,
"slug": "roulette-eu",
"slot_slug": null,
"slot": 0,
"currency": "BTC",
"options": {
"20": "10.000",
"66": "10.000",
"67": "10.000",
"89": "10.000",
"101": "10.000",
"124": "10.000",
"125": "10.000",
"135": "10.000",
"136": "10.000"
},
"data": [
26,
[]
],
"payout": "0.00",
"amount": "0.003362466992",
"profit": "-0.003362466992",
"hide_bets": 0,
"username": "Acer64",
"xp": "900.00000000",
"datetime": "12 Oct 2023 22:18:22",
"avatar": "8",
"avatar_bg": "f34135",
"avatar_builder": 1,
"server_seed": "2ca25f3eeb0cce84690cbad69c61a991101135d8d795e3821cfda55251bb8e1d",
"client_seed": "d64b8399a89512",
"reveal": 1,
"nonce": 2,
"server_seed_hash": "e4fb55e2493e8cca556690c91bd22d1050a83dd6c50c328fb111d5ceeb9efd5f"
}
The first value of the data array is 26, and this is the value recorded as having been the result of this Roulette game.
At
https://cryptoplay.io/help/fairness, the following code is available to check your provably fair implementation:
$seed = hash_hmac('sha512', 'my server seed', 'my client seed'.':'.'my nonce');
$seed = hexdec(substr($seed,0,10));
$roulette_number = $seed % 37;
return $roulette_number;
I wrote the following Node.js adpation of the PHP code:
const crypto = require('crypto');
const hex = crypto.createHmac('sha512', 'd64b8399a89512:2').update('2ca25f3eeb0cce84690cbad69c61a991101135d8d795e3821cfda55251bb8e1d').digest('hex').substring(0, 10);
const res = parseInt(hex, 16) % 37;
console.log(res);
This code indicates the result of the game should have been 21, which would have been a winning result for this particular game.
The results of the next bet in this series, bet id 869601961, follows:
{
"id": 869601961,
"game": "Roulette (EU)",
"slot_name": null,
"slug": "roulette-eu",
"slot_slug": null,
"slot": 0,
"currency": "BTC",
"options": {
"20": "10.000",
"66": "10.000",
"67": "10.000",
"89": "10.000",
"101": "10.000",
"124": "10.000",
"125": "10.000",
"135": "10.000",
"136": "10.000"
},
"data": [
8,
[]
],
"payout": "0.00",
"amount": "0.003362466992",
"profit": "-0.003362466992",
"hide_bets": 0,
"username": "Acer64",
"xp": "900.00000000",
"datetime": "12 Oct 2023 22:18:28",
"avatar": "8",
"avatar_bg": "f34135",
"avatar_builder": 1,
"server_seed": "2ca25f3eeb0cce84690cbad69c61a991101135d8d795e3821cfda55251bb8e1d",
"client_seed": "d64b8399a89512",
"reveal": 1,
"nonce": 3,
"server_seed_hash": "e4fb55e2493e8cca556690c91bd22d1050a83dd6c50c328fb111d5ceeb9efd5f"
}
We see here that the reported result of this bet is 8 and can confirm that result with the code written above.
Lastly, it's noted that this behavior disappears once below a certain bet threshold. For instance, the bets in this post are all around $90 and a winning bet was never seen in a sequence of 10 bets that should have had about a 25% chance of having some return. Of course 4/10 bets actually did return, the casino just misreported the actual outcome. This behavior was not seen at bets closer to $10.
I assert that this casino is fraudulently marking winning bets as losses in a very obvious and easily confirmable way. For that reason, I am leaving a flag.
