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  1. Give a bullet point overview of the system.
  • Routing various order types to multiple pools
  • Handling NFT transfers and royalty fees
  • Ensuring deadline compliance and surplus ETH refunds
  • Customizable NFT Automated Market Maker smart contract
  • Facilitates trading, depositing, and withdrawing of NFTs and base tokens
  • Earning fees from trading activities
  • Advanced features like concentrated liquidity and custom fee rates
  • Stolen NFT filtering to prevent trading of stolen assets
  • Support for royalties and flash loans in the DeFi ecosystem```
  1. What access control mechanisms are in place? The access control mechanism in place is the `onlyOwner` modifier. This modifier checks if the sender of the transaction (`msg.sender`) is the owner of the contract by comparing it with the owner returned by the `Factory(factory).ownerOf(uint160(address(this)))` function call. If the sender is not the owner, the modifier will revert the transaction with an "Unauthorized" error message. The `virtual` keyword indicates that this modifier can be overridden in derived contracts.
  2. For each smart contract, give a bullet point overview. 
    - Customizable NFT Automated Market Maker smart contract
- Facilitates trading, depositing, and withdrawing of NFTs and base tokens
- Allows users to earn fees
- Offers advanced features like concentrated liquidity, custom fee rates, stolen NFT filtering
- Supports royalties and flash loans

  1. Eth Router:

    • Streamlines trading of native ETH-based tokens
    • Routes various order types to multiple pools
    • Handles NFT transfers and royalty fees
    • Ensures deadline compliance and surplus ETH refunds

  2. Caviar Private Pool Factory:

    • Facilitates creation and initialization of private pools
    • Mints NFTs for creators
    • Handles protocol fees
    • Deploys pool clones
    • Manages private pool metadata, implementation contracts, and fee rates
    • Enables withdrawal of earned fees and prediction of deployment addresses for new pools```
  1. What modifiers are used in each contract?
  1. modifier onlyOwner() virtual: This modifier is used in the Private Pool contract. It restricts access to certain functions within the contract by checking if the sender of the transaction (msg.sender) is the owner of the contract. If the sender is not the owner, the modifier will revert the transaction with an "Unauthorized" error message. The virtual keyword indicates that this modifier can be overridden in derived contracts.```