Package rpsduel is an asynchronous, two-player rock-paper-scissors duel with a commit-reveal handshake. The challenger locks in a move as a sha256 commitment up front so the opponent can't peek at it; the opponent then replies in the clear (seeing only a hash gives them no edge); the challenger reveals last to settle the round. A challenger who tries to dodge a losing reveal can be forfeited by the opponent once the reveal window expires.
ComputeCommit hashes a move and salt exactly the way Reveal checks it, so a caller can compute their commitment (e.g. via a read-only query) before calling Open, then remember the salt to pass to Reveal later.
gnokey query vm/qeval -remote "https://rpc.gno.land" -data "gno.land/r/moul/x/daily/rpsduel/v0.ComputeCommit(,)"