MEZONK
Turn your conviction into a market. A non-custodial prediction market built on Mezo, settled in MUSD.
- Buy Yes or No shares with MUSD; sell back any time before trading closes.
- Every Yes/No pair is backed by exactly 1 MUSD held by the contract, so payouts can't exceed reserves.
- Rules are hashed on-chain at creation and can't be edited.
- Outcomes go through a public propose → challenge → arbitrate process with evidence committed on-chain. If nobody acts in time, markets settle as Invalid (0.5 MUSD per share) and nothing gets stuck.
Status: testnet-ready, not deployed to a public network yet, not audited. Local fork end-to-end is fully working.
Layout
contracts/ Foundry: MezonkMarkets (FPMM over complete sets + optimistic resolution), tests, deploy script
apps/web/ Next.js 15 app + API routes + event indexer (Drizzle: Postgres in prod, PGlite locally)
docs/ Design, threat model, deployment
scripts/ dev-chain.sh (local Mezo fork)
Quick start (local fork, no funds or keys needed)
pnpm install
./scripts/dev-chain.sh # terminal 1: anvil fork of Mezo Testnet, deploys and funds test wallets
pnpm --filter web dev # terminal 2: http://localhost:3000
pnpm --filter web seed:local # terminal 3: markets in every lifecycle state
Tests
cd contracts && forge test # unit, resolution (1–21), fuzz, invariants
MEZO_TESTNET_RPC_URL=https://rpc.test.mezo.org forge test --match-path 'test/fork/*' # real MUSD on a fork
cd apps/web
pnpm test # unit: AMM math, replay, permissions, timeline, API auth
pnpm test:integration # indexer vs a real anvil chain: reorg, duplicates, RPC failure, reconciliation
pnpm test:e2e # Playwright vs the local fork stack (start dev-chain + app first)
Deploying
See docs/deployment.md for env keys, testnet deploy and hosting.
Docs
License
MIT. See LICENSE.
