reply on: LN Roulette – A Lightning-Powered, Provably Fair Roulette Game \ stacker news ~bitcoin

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0 sats \ 15 replies \ @nout 15 Jan \ parent \ on: LN Roulette – A Lightning-Powered, Provably Fair Roulette Game bitcoin

You run this on the server, right? How can you prove that you are running this file and not something like

function getRandomIntInclusive(min, max) {
  if (Math.random() > 0.9) return 16;
  return crypto.randomInt(min, max+1);
}

0 sats \ 14 replies \ @roulette OP 15 Jan

I can't but you can check the hash and salt

0 sats \ 13 replies \ @nout 15 Jan

Well, that doesn't really help much, right? You just give me a hash of 16+salt and then I can confirm that I indeed got 16.

0 sats \ 12 replies \ @roulette OP 15 Jan

Yes, you can, if you think that 16 is coming more times them usual, try your luck....

100 sats \ 11 replies \ @nout 15 Jan

And where exactly do you return the number+salt ahead of the bet? In the responses I only see the last number, but I have not found any response that would actually return this field?

77 sats \ 10 replies \ @roulette OP 15 Jan

You can go to menu->Spins

100 sats \ 9 replies \ @nout 15 Jan

Oh I see, ok.

The reason why I'm giving you quite hard time is that "provably fair" is a big claim. There are probably ways to do that with e.g. STARKs or DLCs, but all that is fairly new cryptography and all quite complex. I don't think you are doing it.

0 sats \ 8 replies \ @DiedOnTitan 1 Feb

It's still not ok. Limiting visibility of the hash to the first 7 characters is "provably fair theatre". Very easy to create collisions at only 7 chars. Waiting for them to show the full hash.

0 sats \ 7 replies \ @nout 1 Feb

"provably fair theatre"

I mean the current setup is already "provably fair theatre" no matter if you show the full hash or not.

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