Smart Contracts

Varla's on-chain architecture — the core contracts that power prediction market lending, liquidation, oracle pricing, and governance.

All Varla contracts are licensed under BUSL-1.1 and target Solidity ^0.8.33.

Architecture

VarlaPool (ERC-4626)       ←→  VarlaInterestRateStrategy
       ↕
VarlaCore (ERC1155Holder)  ←→  VarlaOracle ←→ OracleUpdaterRouter
       ↕
VarlaLiquidator            ←→  Liquidator variants
       ↕                         (VarlaMergeLiquidator, VarlaConvertLiquidator)
Market Adapters
  ├─ PolymarketCtfAdapter
  ├─ PolymarketNegRiskMergeAdapter
  └─ OpinionCtfExecutionEngineAdapter

Access: VarlaAccessManager + VarlaRoles
Governance: VarlaGovernor + VarlaTimelock
Token: VRLA + VarlaStaking + VarlaVestingWallet

Core Contracts

Contract	Role
VarlaCore	Central borrowing engine — deposit/withdraw ERC1155 collateral, borrow/repay, health factor checks, position management
VarlaPool	ERC-4626 vault — lender deposits, share accounting, interest accrual, fee collection
VarlaOracle	Push-based oracle — packed price storage, staleness checks, grace windows
VarlaInterestRateStrategy	Kinked interest rate model — configurable optimal utilization, two-slope curve
VarlaLiquidator	Simple, multi-collateral, and bad-debt liquidation (+ merge and convert mode contracts)

All Contract Pages

VarlaCore

Borrowing engine, collateral escrow, health factor checks.

VarlaPool

ERC-4626 lending vault with interest accrual.

VarlaOracle

Push-based oracle with packed price storage.

Interest Rate Strategy

Kinked rate model with configurable slopes.

Liquidators

Liquidation router with merge and convert variants.

Market Adapters

Polymarket and Opinion prediction market integrations.

Access Control

RBAC via VarlaAccessManager and VarlaRoles.

Governance

VarlaGovernor and VarlaTimelock for on-chain governance.