Welcome to
MoneyPot's provably fair seeding event.
Our provably fair system is based on the
first seeding event, but instead of salting each hash in the chain with a client seed, a
Vx signature will be used. This preserves all provably fair guarantees while allowing third-party auditing.
Starting with a server secret, I have generated a chain of 100,000,000 sha256 hashes by recursively hashing the previous hash. The hash of the chain's last element is cd01fbf68ac526970f016e07d7b92e58d49322f02387e4a952037dc5f605f016. This is also
our commitment to Vx.
The reference code we use to determine game results is as follows:
const crypto = require("crypto")
// The function that calculates game results
function gameResult(hash, vxSignature, casinoBankroll, playerBetting) {
const X = scaledOutcome(hash, vxSignature)
return (casinoBankroll + 2 * playerBetting) / (-scaledOutcome * casinoBankroll + casinoBankroll + 2 * playerBetting)
}
// The pure probability of the casino winning, before taking into account any edge
function scaledOutcome(hash, vxSignature) {
const nBits = 52 // number of most significant bits to use
// 1. HMAC_SHA256(key=vxSignature, message=hash)
const hmac = crypto.createHmac("sha256", vxSignature)
hmac.update(hash)
seed = hmac.digest("hex")
// 2. r = 52 most significant bits
seed = seed.slice(0, nBits/4)
const r = parseInt(seed, 16)
// 3. X = r / 2^52
return r / Math.pow(2, nBits) // uniformly distributed in [0; 1)
}
To compute the hash chain and verify game results, you can use
this open-source tool.
The technical details of our game result generation scheme can be found in our
maths page.
