Open-source Solana Prediction Market smart contract built with Anchor

Open-source Solana Prediction Market smart contract built with Anchor. Enables creation of binary YES/NO outcome markets with bonding curve trading (SOL tokens), platform + creator fees, Metaplex metadata, whitelist support, and optional backend co-signing for controlled launches.

I open-sourced

Why I built this

• Automate trading or snipe strategies with a typed codebase


• Backtest ideas before deploying with real capital


• Extend the bot with your own risk rules and market filters

Most tutorials stop at a smart contract or a UI mockup. I wanted a complete vertical slice — wallet flow, on-chain logic, backend state, and a responsive frontend — so you can study or fork a production-shaped codebase.

What it does

• Open-source Solana Prediction Market smart contract built with Anchor


• Enables creation of binary YES/NO outcome markets with bonding curve trading (SOL tokens), platform + creator fees, Metaplex metadata, whitelist support, and optional backend co-signing for controlled launches


• Platform fees on buy and sell (standard and reduced “small” fee tiers for whitelisted users).


• Creator fees on buy and sell.


• 
  Cross-side liquidity shift on buys (configurable cross_sol_factor), which links YES and NO reserve dynamics.


• 
  amount — Input amount (lamports for buy, token amount for sell depending on direction).


• 
  direction — 0 = buy, 1 = sell.


• 
  token_type — 0 = NO, 1 = YES.

Architecture at a glance

• 
  On-chain program — Anchor/Rust logic for escrow, rooms, and settlement


• 
  Application layer — TypeScript backend/frontend tying on-chain and off-chain flows


• 
  Feature — Open-source Solana Prediction Market smart contract built with Anchor


• 
  Feature — Enables creation of binary YES/NO outcome markets with bonding curve trading (SOL tokens), platform + creator fees, Metaplex metadata, whitelist support, and optional backend co-signing for controlled launches


• 
  Feature — Platform fees on buy and sell (standard and reduced “small” fee tiers for whitelisted users).
  

User Wallet  →  On-chain Program  →  VRF / Settlement

                    ↓

              Backend (API + WebSockets)  →  MongoDB / state

                    ↓

                 Frontend UI (real-time)

Adjust the diagram to match your repo layout if components differ.

Tech stack

• Rust


• Solana


• Anchor


• TypeScript

Quick start

git clone https://github.com/DexCrancer/solana-prediction-market-smart-contract.git

cd solana-prediction-market-smart-contract

Setup steps:

1. Install dependencies (see README — typically npm install or yarn)


2. Copy .env.example to .env and fill in RPC, wallet, and API keys


3. Run local validator or point to devnet/mainnet as documented


4. Start the backend and frontend; connect wallet and create a test room

See the full README for environment variables, deploy scripts, and test commands:

Disclaimer: Educational content only. Not financial advice. Gambling and trading involve risk; use responsibly and comply with local laws.

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