Hey there,

I’ve been building Bitcoin Arena for a while now. It’s games and prediction market protocol where you play against other people, not against a house. A round is run by 7 nodes, and 5 of them have to sign off on the result before anyone gets paid. The money sits in Fedimint federations run by those same nodes.

It’s all on testnet4, so it costs you nothing. Log in with your Nostr key or just create a new wallet, and you get 3,000 test sats straight into it. Then play a round of rock paper scissors or bet on BTC going up or down.

If you find a bug, we pay you real sats over Lightning. 500 for useful feedback, 1k to 5k for a bug, 10k if it’s critical. If you set up a node and tell us how the install went, that’s another 10k (first 10 people).

There’s a feedback button in the app. We look at every report, first one to find a bug gets paid.

If you want to run a node, please read the code first or have your AI of choice go through it. It’s all here: https://github.com/bitcoinarena/bitcoinarena

Test the protocol here: https://sn.bitcoinarena.io

Curious what breaks first.