Upon winning or losing you will get the number that you have rolled via a dm message.

Then go to the nonce account and fetch the nonce of your round. (published every 10 minutes)

Now create a sha256 hash out of the following information ( nonce | your npub | your zap memo | index)

You can also do this using online tools like https://emn178.github.io/online-tools/sha256.html?input=[nonce][your npub][your zap memo][index]&input_type=utf-8&output_type=hex&hmac_enabled=0&hmac_input_type=utf-8

The result will look something like that 9d6b99966ce4ff8ccc8c7d73058aa3273cb782adc86b3bdfee7a7f134d1135be

Now take the first 4 characters of that hex and convert them to a decimal number. You can again use an online tool like that. https://www.rapidtables.com/convert/number/hex-to-decimal.html?x=9d6b

Now you can verify that the number you've rolled actually adhered to an entropy provided by you.

Before a round starts nostr dice also commits to the nonce upfront, so it can't cheat you by finding a nonce that suits them best afterwards. You can find these announcements as well on the nonce account

Here is an example from a previous round with a nonce hash commitment of 7ff33d5c47cb2fedf918461659b482359e142085ab28d3d42b2be46e6d3c059c.

After 10 minutes nostr dice published the nonce (pre image: cb3f8358ac79f4329a486d93021a71262293cfb36e6e89609ec2ff5d114ff3d9), which you can then verify comparing the sha256 hash of the published nonce and the nonce commitment.

Are you sure about that? It looks like they are paying in sats judging from their website.

great stuff, can't wait to give this a try :)