Comment on page

Smart Contract Architecture

​The Parallel Protocol is a collection of decentralized and non-custodial smart contracts built to support the rest of the Decentralised Finance (DeFi) ecosystem:
  • Vaults Core: The main contract to interact with the Parallel protocol. All calculations happen here.
  • Vaults Core State: Owns the global state (cumulative rates & last refresh) for each collateral type available to borrow against. All state updates & calculations happen here
  • PAR: PAR is a standard ERC20 tokens, whose value is pegged to the EUR fiat currency.
  • paUSD: paUSD is a standard ERC20 tokens, whose value is pegged to the USD fiat currency
  • Rates Manager: Stateless. Calculates debt and fees for each Vault.
  • Liquidation Manager: Stateless. Calculates health factors and liquidation variables.
  • PriceFeed: Responsible for retrieving collateral prices in fiat, for calculating Vault health factors.
  • FeeDistributor: Responsible for collecting and distributing protocol fees.
  • AddressProvider: Indexes all module addresses read by other modules.
  • ConfigProvider: Responsible for updating protocol config parameters.
  • VaultsDataProvider: Owns vault state, base debt, and vault related read functions.