BOUNTY: 1337.42069 $JUNO

Acceptance 🔍

(PLEASE READ: all of the below items are mandatory for bounty payout)

• bounty claims need to be submitted as non-Draft fully runnable Pull Requests against main in this repository
• feature complete UI for 🪨📄✂️ integrating Keplr wallet and all the necessary contract interactions as QueryMsg, ExecuteMsg etc.
• zkCosmWasm game backend implementation feature complete and diagram of its operation clearly documented
• a pattern for Keplr / DID encrypted private state accesses by each user from zkVM code using a well-studied scheme
• game to be accessed via a set of HTTP requests and barebones UI hosted on the same machine as zkVM / CosmWasm backend code
• game needs to be played by p > 2 players w/ different wallets
• tests to show several games can be happening at the same time in arbitrary order
  • unit tests
  • multitest contract simulation tests
  • (GODMODE) wallet simulation tests
• if PR is approved and merged, the developer needs to start the process of merging the zkCosmWasm example back into the risc0/ organization.

Congrats, when your code is merged to main here, please open the PR to risc0/ will be sufficient as the last step that allows you to post your claim as a comment here, together with a Junø address, and any comments about the dev experience that you care to share for posterity.

Why 🤔

We now have the zkCosmWasm smart contract execution pathway using the 1337 multiplication example, and the overall pattern for client interactions is now established (adapted from the NEAR battleship example): Client (Keplr / DID) 🔜 Verifier (CosmWasm) 🔛 Prover (zkVM ELF) ...it is now time to build something even more fun to further develop / discover the zkCW pattens: an imperfect information zero-sum game that ze Germans call Schnick-Schnack-Schnuck 🐊

What 🌀

• single-command spinup of the game and HTTP server hosting game UI, zkVM, and barebones cosmwasm runtime
• feature-complete game wallet-connected UI that users can reach over HTTP (e.g. over the same LAN / VPC)
• application of the ability to pass structs in and out of the zkVM code using env
• a pattern to encrypt, persist, and associate given state to a specific cryptographically-enabled identity (Keplr wallet, for simplicity)
• unit and multitest tests implementing the simplest pass of How

How 👩🏻‍💻

Note: ৹POINTS here for simplicity represent u128 / Uint128 recorded in a private matter in any convenient manner; in the future, these can become native or cw20 tokens in a simple wasmd game chain.

Gameplay 🃏

(to be enabled using various ExecuteMsg types, as well as QueryMsg that help the players know if they are gmi or ngmi) The RPS game consists of the following loop:

• new players each start with 1230 ৹POINTS that they can use to form up games
• each player seeking to enter the game puts down at least 123 ৹POINTS
• players join a new GAME_ID and indicate readiness to start round
• GAME_ID drafting begins when n > 1 players have indicated they are ready via ExecuteMessage
• players select their played gesture out of the initial set of {R, P, S}
• when all players have selected their gestures are revealed
• those who have not submitted gestures within any subsequent GAME_ID game completing, automatically forefeit a given round
• rounds go on until there is one person left standing, or the stalemate - same gesture - lasts for more than 3 rounds
• several games each with a unique GAME_ID should be able to interact with CosmWasm simultaneously

WinRAR 📚

If there is a winning player ("last one standing"), 42 ৹POINTS from the amount of total ৹POINTS put down by the players is sent to the pre-designated 'croupier wallet' (foreshadowing DAO treasury / bank module).

If the game ends in stalemate, all the ৹POINTS are sent to the second player to submit a gesture choice for this GAME_ID (their identity not known to the other players, but determined in a verifiably correct manner).

(optional) Theory 🕹

https://archive.org/details/isbn_9780465009381 https://www.sciencedirect.com/science/article/abs/pii/S0378437119314499?via%3Dihub https://iopscience.iop.org/article/10.1209/0295-5075/134/48001 https://www.nature.com/articles/380240a0