To verify SatoshiDICE games, look at the verifygame-page.js
https://satoshidice.com/js/verifygame-page.js
The random number is generated by the following seed:
seed = sha256(hexStringToByte(serverSeed + txid + voutHex))
randomNumber = getRandomNumber(seed)
function getRandomNumber(sha256) {
var seed = new Array();
for (var s = 0; s < 8; s++) {
var intText = sha256.substring(s * 8, (s + 1) * 8);
seed.push(parseInt(intText, 16));
mersenneTwister.seedArray(seed);
}
return mersenneTwister.short();
}
When SatoshiDICE publishes the secret server seed, you can use that to verify that your random numbers were random. The output number is a 4 byte number in hex.
The random number generator is a Marsenne Twister returning a short int:
https://satoshidice.com/js/MersenneTwister.js
The hash of the secret seed is published a few days before, and always put on the blockchain to make sure nothing is changed: https://cashexplorer.bitcoin.com/tx/61ac980529ee745599ba02dae44bdcacba323e7cfd20214e84895d030883e2cd
You can see the secret server seeds here: https://satoshidice.com/provablyfair
To verify SatoshiDICE games, look at the verifygame-page.js
https://satoshidice.com/js/verifygame-page.js
The random number is generated by the following seed:
seed = sha256(hexStringToByte(serverSeed + txid + voutHex))
randomNumber = getRandomNumber(seed)
function getRandomNumber(sha256) {
var seed = new Array();
for (var s = 0; s < 8; s++) {
var intText = sha256.substring(s * 8, (s + 1) * 8);
seed.push(parseInt(intText, 16));
mersenneTwister.seedArray(seed);
}
return mersenneTwister.short();
}
When SatoshiDICE publishes the secret server seed, you can use that to verify that your random numbers were random. The output number is a 4 byte number in hex.
The random number generator is a Marsenne Twister returning a short int:
https://satoshidice.com/js/MersenneTwister.js
The hash of the secret seed is published a few days before, and always put on the blockchain to make sure nothing is changed: https://cashexplorer.bitcoin.com/tx/61ac980529ee745599ba02dae44bdcacba323e7cfd20214e84895d030883e2cd
You can see the secret server seeds here: https://satoshidice.com/provablyfair
To verify SatoshiDICE games, look at the verifygame-page.js
https://satoshidice.com/js/verifygame-page.js
The random number is generated by the following seed:
seed = sha256(hexStringToByte(serverSeed + txid + voutHex))
randomNumber = getRandomNumber(seed)
function getRandomNumber(sha256) {
var seed = new Array();
for (var s = 0; s < 8; s++) {
var intText = sha256.substring(s * 8, (s + 1) * 8);
seed.push(parseInt(intText, 16));
mersenneTwister.seedArray(seed);
}
return mersenneTwister.short();
}
When SatoshiDICE publishes the secret server seed, you can use that to verify that your random numbers were random. The output number is a 4 byte number in hex.
The random number generator is a Marsenne Twister returning a short int:
https://satoshidice.com/js/MersenneTwister.js
The hash of the secret seed is published a few days before, and always put on the blockchain to make sure nothing is changed: https://cashexplorer.bitcoin.com/tx/61ac980529ee745599ba02dae44bdcacba323e7cfd20214e84895d030883e2cd
You can see the secret server seeds here: https://satoshidice.com/provablyfair
