[Proof Of Concept] Zero-Collateral Lotteries #4
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
The lottery is simulating the game logic in the following way: ImprovementHasn't integrated with the actual Ark wallet so
TODO:
|
|
Gameflow Demonstration: |
pingu-73
force-pushed
the
zero-collateral
branch
from
c14c6c1 to
8c620c5
Compare
Comment on lines
+29
to
+31
| pub fn from_hash(hash: Vec<u8>) -> Self { | ||
| Self { hash, secret: None } | ||
| } |
There was a problem hiding this comment.
use the impl From<Vec>``
There was a problem hiding this comment.
Pull Request Overview
This PR adds a full zero-collateral lottery system with both a CLI client and a reusable Rust library.
- Introduces a
coinflip-clibinary that manages game lifecycle (create, join, bet, commit, reveal, status, list) and persists state locally. - Implements a new
arkive-lotterycrate withTwoPlayerGame,Player, and a hash‐based commit/reveal scheme. - Updates the workspace manifest to include the new crates and their dependencies.
Reviewed Changes
Copilot reviewed 11 out of 12 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
| coinflip-cli/src/main.rs | CLI entrypoint using clap and dispatching subcommands |
| coinflip-cli/src/commands/mod.rs | Command handlers, JSON-based game storage, and user prompts |
| coinflip-cli/Cargo.toml | Defines the coinflip-cli package and its dependencies |
| arkive-lottery/src/lib.rs | Public re-exports and helper functions for the lottery crate |
| arkive-lottery/src/game.rs | Core TwoPlayerGame logic for player management, betting, and payouts |
| arkive-lottery/src/player.rs | Player struct with commitment and betting methods |
| arkive-lottery/src/commitment/scheme.rs | Commitment trait implementation and struct |
| arkive-lottery/src/commitment/mod.rs | HashCommitment implementation and helper functions |
| arkive-lottery/src/error.rs | LotteryError definitions |
| arkive-lottery/Cargo.toml | Defines the arkive-lottery package and its dependencies |
| Cargo.toml | Adds coinflip-cli and arkive-lottery to the workspace |
Comments suppressed due to low confidence (4)
coinflip-cli/src/commands/mod.rs:548
- [nitpick] The
????in the error message is unclear. Simplify to something likePayout failed: {}to make it more professional and user-friendly.
println!("Payout failed ????: {}", e);
arkive-lottery/src/game.rs:29
- [nitpick] There are no unit tests for
TwoPlayerGameflows (bet placement, commitment, reveal, payout). Adding tests will help ensure protocol correctness and guard against regressions.
pub struct TwoPlayerGame {
coinflip-cli/src/commands/mod.rs:587
chrono::DateTimedoes not have afrom_timestampconstructor. UseUtc.timestamp(deadline, 0)orNaiveDateTime::from_timestampfollowed byDateTime::from_utcinstead.
let dt = chrono::DateTime::from_timestamp(deadline, 0).unwrap();
arkive-lottery/src/commitment/scheme.rs:27
- Calling
RngCore::fill_bytesonrand::thread_rng()won’t compile. Instead, dolet mut rng = rand::thread_rng(); rng.fill_bytes(&mut nonce);
rand::RngCore::fill_bytes(&mut rand::thread_rng(), &mut nonce);
| @@ -0,0 +1,698 @@ | |||
| #![allow(unused_variables)] | |||
There was a problem hiding this comment.
[nitpick] This allow attribute silences all unused-variable warnings; consider removing it and addressing any unused bindings explicitly to keep the code clean.
Suggested change
| #![allow(unused_variables)] |
Copilot uses AI. Check for mistakes.
| let game_data = GameData { | ||
| id: game_id.to_string(), | ||
| bet_amount: amount, | ||
| state: format!("{:?}", info.state), |
There was a problem hiding this comment.
Storing the game state as a formatted string and later matching on that string is brittle. Consider serializing the GameState enum directly or storing it as an enum in the JSON for type safety.
Suggested change
| state: format!("{:?}", info.state), | |
| state: info.state, |
Copilot uses AI. Check for mistakes.
| } | ||
|
|
||
| let pot_address = pot_wallet.get_ark_address().await?; | ||
| println!("DEBUG: Pot address: '{}'", pot_address.address); |
There was a problem hiding this comment.
[nitpick] Raw debug prints can clutter user output; consider using a logging framework (e.g., log::debug!) or removing these debug statements in production.
Copilot uses AI. Check for mistakes.
vincenzopalazzo
requested changes
Jun 30, 2025
There was a problem hiding this comment.
Do not create a new cli, use the arkive-cli
I'm thinking to add jonhoo's rust-ci-config and have opened an issue for it too (#5 ). But I was thinking to first fix ark round participation logic before doing that. for other issues I've not done |
Signed-off-by: Dikshant <[email protected]>
Signed-off-by: Dikshant <[email protected]>
pingu-73
force-pushed
the
zero-collateral
branch
from
8c620c5 to
06d90cf
Compare
pingu-73
changed the title
|
This PR is not to be merged. It's a proof of work for #18 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Overview
This PR implements a Zero-Collateral Lottery system (2-player lottery only):
Why?
Traditional online gambling suffers from:
This implementation eliminates these issues through:
The zero-collateral lottery paper by Miller et al. demonstrated the theoretical possibility of fair lotteries without security deposits. However, the paper focused on cryptographic protocols without addressing practical value transfer mechanisms. This implementation bridges that gap by:
refer: https://arxiv.org/pdf/1612.05390
Features
Bet Collection & Escrow
Pot Management
Game State Management