Architecture Overview

Contract System

evently is composed of independent smart contracts deployed on MegaETH mainnet.

+---------------------------+
|   EventlyProfiles.sol     |  ← Identity, stats, referrals, swap points
+------------+--------------+
             | reads/writes profile data
+------------v--------------+
|   EventlyMarkets.sol      |  ← Prediction markets (LMSR b=200 + CLOB)
|   Pending deployment      |    Pre-launch audit complete — 29 tools
+---------------------------+

The Markets contract is fully independent — it only reads USDm balances and approvals from the ERC-20 contract. The Profiles contract tracks identity and onchain social layer.

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Deployed Addresses (Mainnet — Chain ID 4326)

Contract	Address
EventlyMarkets	TBD (pending deployment post professional audit)
EventlyProfiles (v1.3)	0x9F0708145BCCD1F5B16F610cB8a75A63fA4A9a24
USDm	0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7
MegaNames	0x5B424C6CCba77b32b9625a6fd5A30D409d20d997
Admin wallet	0x21CbC99a2E8c68F1C2955991E07c0C22ea895Da1

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Design Principles

• Pull payment pattern — winners pull funds via redeemWinnings() / claimCancelRefund(); no push transfers that can fail
• Checks-Effects-Interactions (CEI) — state reset before all external calls
• ReentrancyGuard — custom _locked mutex on all state-mutating external functions
• No upgradeability — contracts are immutable; new versions are redeployed
• Transparency — all events emitted for full on-chain auditability

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EventlyMarkets — Key Architecture

LMSR AMM (b=200 USDm) as market maker of last resort. CLOB (Central Limit Order Book) with bids and asks matched first at price-time priority.

BUY order  → CLOB asks filled first → remainder to LMSR AMM
SELL order → CLOB bids filled first → remainder rests as limit ask
           → OR: sellToAMM() for instant AMM execution

ERC-1155 shares: 1 winning share = 1 USDm at redemption. Solvency guaranteed by LMSR invariant: poolBalance + subsidyDeposited >= total winning shares.

Pre-launch audit complete (29 tools — 7 AI engines + 22 automated scanners). No blocking findings. Awaiting professional audit (two independent firms).

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Gas Configuration (MegaETH-Specific)

MegaETH has near-zero gas costs (~10ms blocks, ~100K TPS). Transaction configuration in the frontend:

maxFeePerGas: 1_000_000n     // 1 gwei
maxPriorityFeePerGas: 0n

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Off-Chain Infrastructure

Component	Tech	Purpose
Database	Supabase (PostgreSQL)	Market metadata, user profiles, trade history cache
Frontend	Next.js + Tailwind + wagmi	React app at evently.market
Real-time	watchContractEvent (wagmi)	~10ms block polling for live trade feed
Bridge/Swap	LiFi SDK	60+ routes to MegaETH
Market import	Polymarket CLOB API	Live odds comparison