ETH Price: $2,616.24 (+0.97%)

Contract

0xdCe46b2D2193b5fab04b3129eA9498c9B601A140
 
Transaction Hash
Method
Block
From
To
Redeem181071382023-09-10 16:22:35346 days ago1694362955IN
0xdCe46b2D...9B601A140
0 ETH0.0016602610.63315371
Transfer Ownersh...180466492023-09-02 5:07:35355 days ago1693631255IN
0xdCe46b2D...9B601A140
0 ETH0.0003638612.76894538
Transfer180430832023-09-01 17:05:59355 days ago1693587959IN
0xdCe46b2D...9B601A140
0.5 ETH0.0008551940.61728234
Enter New Paradi...180430362023-09-01 16:56:35355 days ago1693587395IN
0xdCe46b2D...9B601A140
0 ETH0.0056177733.56039134
Enter New Paradi...180391742023-09-01 3:58:59356 days ago1693540739IN
0xdCe46b2D...9B601A140
0 ETH0.002009312.07274414
Enter New Paradi...180377542023-08-31 23:12:59356 days ago1693523579IN
0xdCe46b2D...9B601A140
0 ETH0.0032105419.17902713
Enter New Paradi...180350952023-08-31 14:16:23357 days ago1693491383IN
0xdCe46b2D...9B601A140
0 ETH0.0185085731.28494389
Enter New Paradi...180314242023-08-31 1:58:23357 days ago1693447103IN
0xdCe46b2D...9B601A140
0 ETH0.007870313.30252816
Enter New Paradi...180302922023-08-30 22:08:47357 days ago1693433327IN
0xdCe46b2D...9B601A140
0 ETH0.0114167619.26565177
Enter New Paradi...180300082023-08-30 21:11:35357 days ago1693429895IN
0xdCe46b2D...9B601A140
0 ETH0.0203246534.2985181
Enter New Paradi...180287782023-08-30 17:03:59357 days ago1693415039IN
0xdCe46b2D...9B601A140
0 ETH0.0284471248.08564299
Enter New Paradi...180256402023-08-30 6:29:59358 days ago1693376999IN
0xdCe46b2D...9B601A140
0 ETH0.0116500719.66088763
Enter New Paradi...180248852023-08-30 3:57:23358 days ago1693367843IN
0xdCe46b2D...9B601A140
0 ETH0.0103885717.53182547
Enter New Paradi...180245842023-08-30 2:56:47358 days ago1693364207IN
0xdCe46b2D...9B601A140
0 ETH0.0109333618.45172087
Enter New Paradi...180237322023-08-30 0:05:47358 days ago1693353947IN
0xdCe46b2D...9B601A140
0 ETH0.0115419619.48165764
Enter New Paradi...180230242023-08-29 21:42:47358 days ago1693345367IN
0xdCe46b2D...9B601A140
0 ETH0.0170613128.79309347
Enter New Paradi...180218352023-08-29 17:43:35358 days ago1693331015IN
0xdCe46b2D...9B601A140
0 ETH0.0292197249.39326984
Enter New Paradi...180216462023-08-29 17:05:47358 days ago1693328747IN
0xdCe46b2D...9B601A140
0 ETH0.036905762.27939336
Enter New Paradi...180213862023-08-29 16:12:47358 days ago1693325567IN
0xdCe46b2D...9B601A140
0 ETH0.0420758167.58396199
Enter New Paradi...180171432023-08-29 1:54:59359 days ago1693274099IN
0xdCe46b2D...9B601A140
0 ETH0.0122127520.61089641
Enter New Paradi...180161062023-08-28 22:26:23359 days ago1693261583IN
0xdCe46b2D...9B601A140
0 ETH0.0210194535.82566433
Enter New Paradi...180155652023-08-28 20:37:11359 days ago1693255031IN
0xdCe46b2D...9B601A140
0 ETH0.0229201638.74128963
Enter New Paradi...180153792023-08-28 19:59:59359 days ago1693252799IN
0xdCe46b2D...9B601A140
0 ETH0.0235483239.70406841
Enter New Paradi...180153762023-08-28 19:59:23359 days ago1693252763IN
0xdCe46b2D...9B601A140
0 ETH0.0244960140.98228542
Enter New Paradi...180153732023-08-28 19:58:47359 days ago1693252727IN
0xdCe46b2D...9B601A140
0 ETH0.0250411641.92611363
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194504402024-03-16 22:32:35158 days ago1710628355
0xdCe46b2D...9B601A140
0.02908644 ETH
194504402024-03-16 22:32:35158 days ago1710628355
0xdCe46b2D...9B601A140
0.02908644 ETH
194503962024-03-16 22:23:35158 days ago1710627815
0xdCe46b2D...9B601A140
0.05885636 ETH
194503962024-03-16 22:23:35158 days ago1710627815
0xdCe46b2D...9B601A140
0.05885636 ETH
194503932024-03-16 22:22:59158 days ago1710627779
0xdCe46b2D...9B601A140
0.05905567 ETH
194503932024-03-16 22:22:59158 days ago1710627779
0xdCe46b2D...9B601A140
0.05905567 ETH
194503902024-03-16 22:22:23158 days ago1710627743
0xdCe46b2D...9B601A140
0.0592574 ETH
194503902024-03-16 22:22:23158 days ago1710627743
0xdCe46b2D...9B601A140
0.0592574 ETH
194503882024-03-16 22:21:59158 days ago1710627719
0xdCe46b2D...9B601A140
0.05946016 ETH
194503882024-03-16 22:21:59158 days ago1710627719
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0.05946016 ETH
194503792024-03-16 22:20:11158 days ago1710627611
0xdCe46b2D...9B601A140
0.07325264 ETH
194503792024-03-16 22:20:11158 days ago1710627611
0xdCe46b2D...9B601A140
0.07325264 ETH
194503092024-03-16 22:06:11158 days ago1710626771
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0.00931367 ETH
194503092024-03-16 22:06:11158 days ago1710626771
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0.00931367 ETH
188745132023-12-27 4:05:59239 days ago1703649959
0xdCe46b2D...9B601A140
0.03167164 ETH
188745132023-12-27 4:05:59239 days ago1703649959
0xdCe46b2D...9B601A140
0.03167164 ETH
188744852023-12-27 4:00:23239 days ago1703649623
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0.00295188 ETH
188744852023-12-27 4:00:23239 days ago1703649623
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0.00295188 ETH
187665422023-12-12 0:30:11254 days ago1702341011
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0.03879333 ETH
187665422023-12-12 0:30:11254 days ago1702341011
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0.03879333 ETH
186778392023-11-29 14:22:23266 days ago1701267743
0xdCe46b2D...9B601A140
0.03518475 ETH
186778392023-11-29 14:22:23266 days ago1701267743
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0.03518475 ETH
185444752023-11-10 22:17:59285 days ago1699654679
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0.02439645 ETH
185444752023-11-10 22:17:59285 days ago1699654679
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0.02439645 ETH
184870192023-11-02 21:18:11293 days ago1698959891
0xdCe46b2D...9B601A140
0.01527598 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
Index

Compiler Version
v0.8.21+commit.d9974bed

Optimization Enabled:
Yes with 200 runs

Other Settings:
shanghai EvmVersion
File 1 of 10 : Index.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {Owned} from "solmate/auth/Owned.sol";
import {ERC20} from "solmate/tokens/ERC20.sol";
import {SafeTransferLib} from "solmate/utils/SafeTransferLib.sol";
import {WETH as IWETH} from "solmate/tokens/WETH.sol";
import {IChad} from "./interfaces/IChad.sol";

import {IUniswapV2Router} from "./interfaces/IUniswapV2Router.sol";
import {ISwapRouter} from "@uniswap/v3-periphery/interfaces/ISwapRouter.sol";
import {IQuoter} from "@uniswap/v3-periphery/interfaces/IQuoter.sol";

contract Index is Owned {
  using SafeTransferLib for ERC20;

  enum UniswapVersion {
    V2,
    V3
  }

  struct IndexComponent {
    address token;
    uint8 weight;
    uint24 fee;
    UniswapVersion version;
  }
  struct TokenAmount {
    address token;
    uint256 amount;
  }

  event SetChad(address indexed chad);
  event IndexComponentUpdated(address indexed token, uint8 weight);
  event TokenPurchased(address indexed token, uint256 amount);
  event TokenRedeemed(address indexed token, uint256 amount);

  IUniswapV2Router public immutable uniswapV2Router;
  ISwapRouter public immutable uniswapV3Router;

  /// @dev enable perfect granularity
  uint256 public constant MAX_BPS = 1_000_000_000 * 1e18;
  uint24 public immutable LOW_FEE = 3_000;
  uint24 public immutable HIGH_FEE = 10_000;
  address public constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
  address public constant OX = 0x78a0A62Fba6Fb21A83FE8a3433d44C73a4017A6f;
  address public constant RLB = 0x046EeE2cc3188071C02BfC1745A6b17c656e3f3d;
  address public constant DMT = 0x0B7f0e51Cd1739D6C96982D55aD8fA634dd43A9C;
  address public constant BITCOIN = 0x72e4f9F808C49A2a61dE9C5896298920Dc4EEEa9;
  address public constant UNIBOT = 0xf819d9Cb1c2A819Fd991781A822dE3ca8607c3C9;

  bool public canUpdateWeights = true;
  address public chad;
  address public timelock;
  uint256 public lastPurchase;

  // Current implementation
  mapping(address => IndexComponent) public components;
  mapping(address => bool) public hasToken;
  address[] public tokens;
  address[] public allTokens;

  constructor(address routerAddressV2, address routerAddressV3, address timelockAddress) Owned(msg.sender) {
    uniswapV2Router = IUniswapV2Router(routerAddressV2);
    uniswapV3Router = ISwapRouter(routerAddressV3);
    timelock = timelockAddress;

    components[OX] = IndexComponent({token: OX, weight: 25, fee: HIGH_FEE, version: UniswapVersion.V3});
    components[RLB] = IndexComponent({token: RLB, weight: 25, fee: LOW_FEE, version: UniswapVersion.V3});
    components[DMT] = IndexComponent({token: DMT, weight: 10, fee: LOW_FEE, version: UniswapVersion.V3});
    components[BITCOIN] = IndexComponent({token: BITCOIN, weight: 20, fee: 0, version: UniswapVersion.V2});
    components[UNIBOT] = IndexComponent({token: UNIBOT, weight: 20, fee: 0, version: UniswapVersion.V2});

    tokens = [OX, RLB, DMT, BITCOIN, UNIBOT];
    allTokens = [OX, RLB, DMT, BITCOIN, UNIBOT];

    hasToken[OX] = true;
    hasToken[RLB] = true;
    hasToken[DMT] = true;
    hasToken[BITCOIN] = true;
    hasToken[UNIBOT] = true;

    ERC20(WETH).approve(routerAddressV2, type(uint256).max);
    ERC20(WETH).approve(routerAddressV3, type(uint256).max);

    lastPurchase = block.timestamp;
  }

  receive() external payable {}

  function _requireIsOwner() internal view {
    require(msg.sender == owner, "!owner");
  }

  function setChad(address newChad) external {
    _requireIsOwner();
    chad = newChad;
    ERC20(IChad(chad).uniswapV2Pair()).approve(address(uniswapV2Router), type(uint256).max);
    emit SetChad(newChad);
  }

  function enterNewParadigm() external {
    _requireIsOwner();
    uint256 wethBalance = ERC20(WETH).balanceOf(address(this));
    uint256 etherBalance = address(this).balance;

    uint256 totalBalance = wethBalance + etherBalance;

    if (totalBalance == 0) {
      return;
    }

    uint256 managementFee = (totalBalance * 2) / 100;
    uint256 purchaseAmount = (totalBalance * 98) / 100;
    uint256 etherToWithdraw = managementFee - etherBalance;

    if (etherToWithdraw > 0) {
      IWETH(payable(WETH)).withdraw(etherToWithdraw);
    }
    (bool success, ) = address(owner).call{value: managementFee}("");
    require(success);

    address token;
    uint256 ethAmount;
    IndexComponent memory component;
    for (uint8 i = 0; i < tokens.length; ) {
      token = tokens[i];
      component = components[token];
      ethAmount = (component.weight * purchaseAmount) / 100;
      if (component.version == UniswapVersion.V2) {
        _purchaseFromV2(token, ethAmount);
      } else {
        _purchaseFromV3(token, ethAmount, component.fee);
      }
      unchecked {
        i++;
      }
    }

    lastPurchase = block.timestamp;
  }

  /// @dev cannot update weights without using timelock as an anti rug measure
  function updateWeights(IndexComponent[] calldata newComponents) external {
    require(timelock != address(0) && msg.sender == timelock, "!timelock");
    uint8 totalWeight;
    for (uint8 i = 0; i < newComponents.length; ) {
      totalWeight += newComponents[i].weight;
      unchecked {
        i++;
      }
    }
    require(totalWeight == 100, "!valid");
    for (uint i = 0; i < allTokens.length; ) {
      address token = allTokens[i];
      delete components[token];
      emit IndexComponentUpdated(token, 0);
      unchecked {
        i++;
      }
    }
    delete tokens;
    IndexComponent memory currentComponent;
    for (uint i = 0; i < newComponents.length; ) {
      currentComponent = newComponents[i];
      components[currentComponent.token] = currentComponent;
      tokens.push(currentComponent.token);
      if (!hasToken[currentComponent.token]) {
        hasToken[currentComponent.token] = true;
        allTokens.push(currentComponent.token);
      }
      emit IndexComponentUpdated(currentComponent.token, currentComponent.weight);
      unchecked {
        i++;
      }
    }
  }

  function redeem(uint256 amount) external {
    require(chad != address(0));
    require(amount > 0, "!tokens");
    uint256 share = (amount * MAX_BPS) / ERC20(chad).totalSupply();

    IChad(chad).burn(msg.sender, amount);

    address token;
    uint256 allocation;
    uint256 contractBalance;
    for (uint8 i = 0; i < allTokens.length; ) {
      token = allTokens[i];
      contractBalance = ERC20(token).balanceOf(address(this));
      if (contractBalance > 0) {
        allocation = (contractBalance * share) / MAX_BPS;
        ERC20(token).safeTransfer(msg.sender, allocation);
        emit TokenRedeemed(token, allocation);
      }
      unchecked {
        i++;
      }
    }

    if (lastPurchase != 0 && lastPurchase + 15 days < block.timestamp) {
      // anti-rug vector, if deployed dies or project stagnates the initial LP can be redeemed + all added liquidity
      address liquidityAddress = IChad(chad).uniswapV2Pair();
      uint256 liquidityBalance = ERC20(liquidityAddress).balanceOf(address(this));
      uint256 liquidityAllocation = (liquidityBalance * share) / MAX_BPS;
      if (liquidityAllocation > 0) {
        uniswapV2Router.removeLiquidity(WETH, chad, liquidityAllocation, 0, 0, address(this), block.timestamp);
      }
      uint256 chadRemoved = ERC20(chad).balanceOf(address(this));
      IChad(chad).burn(address(this), chadRemoved);

      // anti-rug vector, if deployer dies or never updates the index - can redeem for weth
      uint256 wethBalance = ERC20(WETH).balanceOf(address(this));
      uint256 wethAllocation = (wethBalance * share) / MAX_BPS;
      if (wethAllocation > 0) {
        ERC20(WETH).safeTransfer(msg.sender, wethAllocation);
      }
    }
  }

  function redemptionAmounts() external view returns (TokenAmount[] memory) {
    TokenAmount[] memory tokenAmounts = new TokenAmount[](allTokens.length);
    for (uint8 i = 0; i < allTokens.length; ) {
      address token = allTokens[i];
      tokenAmounts[i].token = token;
      tokenAmounts[i].amount = ERC20(token).balanceOf(address(this));
      unchecked {
        i++;
      }
    }
    return tokenAmounts;
  }

  function currentTokenCount() external view returns (uint256) {
    return tokens.length;
  }

  function totalTokenCount() external view returns (uint256) {
    return allTokens.length;
  }

  function _purchaseFromV2(address token, uint256 amount) internal {
    address[] memory path = new address[](2);
    path[0] = WETH;
    path[1] = token;
    uint256 balanceBefore = ERC20(token).balanceOf(address(this));
    uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
      amount,
      0,
      path,
      address(this),
      block.timestamp
    );
    uint256 balanceAfter = ERC20(token).balanceOf(address(this));
    emit TokenPurchased(token, balanceAfter - balanceBefore);
  }

  function _purchaseFromV3(address token, uint256 amount, uint24 fee) internal {
    uint256 balanceBefore = ERC20(token).balanceOf(address(this));
    uniswapV3Router.exactInput(
      ISwapRouter.ExactInputParams({
        path: abi.encodePacked(WETH, fee, token),
        recipient: address(this),
        deadline: block.timestamp,
        amountIn: amount,
        amountOutMinimum: 0
      })
    );
    uint256 balanceAfter = ERC20(token).balanceOf(address(this));
    emit TokenPurchased(token, balanceAfter - balanceBefore);
  }
}

File 2 of 10 : Owned.sol
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Simple single owner authorization mixin.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/auth/Owned.sol)
abstract contract Owned {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event OwnershipTransferred(address indexed user, address indexed newOwner);

    /*//////////////////////////////////////////////////////////////
                            OWNERSHIP STORAGE
    //////////////////////////////////////////////////////////////*/

    address public owner;

    modifier onlyOwner() virtual {
        require(msg.sender == owner, "UNAUTHORIZED");

        _;
    }

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(address _owner) {
        owner = _owner;

        emit OwnershipTransferred(address(0), _owner);
    }

    /*//////////////////////////////////////////////////////////////
                             OWNERSHIP LOGIC
    //////////////////////////////////////////////////////////////*/

    function transferOwnership(address newOwner) public virtual onlyOwner {
        owner = newOwner;

        emit OwnershipTransferred(msg.sender, newOwner);
    }
}

File 3 of 10 : ERC20.sol
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(address indexed owner, address indexed spender, uint256 amount);

    /*//////////////////////////////////////////////////////////////
                            METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*//////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*//////////////////////////////////////////////////////////////
                            EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*//////////////////////////////////////////////////////////////
                               ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*//////////////////////////////////////////////////////////////
                             EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}

File 4 of 10 : SafeTransferLib.sol
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

import {ERC20} from "../tokens/ERC20.sol";

/// @notice Safe ETH and ERC20 transfer library that gracefully handles missing return values.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SafeTransferLib.sol)
/// @dev Use with caution! Some functions in this library knowingly create dirty bits at the destination of the free memory pointer.
/// @dev Note that none of the functions in this library check that a token has code at all! That responsibility is delegated to the caller.
library SafeTransferLib {
    /*//////////////////////////////////////////////////////////////
                             ETH OPERATIONS
    //////////////////////////////////////////////////////////////*/

    function safeTransferETH(address to, uint256 amount) internal {
        bool success;

        /// @solidity memory-safe-assembly
        assembly {
            // Transfer the ETH and store if it succeeded or not.
            success := call(gas(), to, amount, 0, 0, 0, 0)
        }

        require(success, "ETH_TRANSFER_FAILED");
    }

    /*//////////////////////////////////////////////////////////////
                            ERC20 OPERATIONS
    //////////////////////////////////////////////////////////////*/

    function safeTransferFrom(
        ERC20 token,
        address from,
        address to,
        uint256 amount
    ) internal {
        bool success;

        /// @solidity memory-safe-assembly
        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata into memory, beginning with the function selector.
            mstore(freeMemoryPointer, 0x23b872dd00000000000000000000000000000000000000000000000000000000)
            mstore(add(freeMemoryPointer, 4), and(from, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "from" argument.
            mstore(add(freeMemoryPointer, 36), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "to" argument.
            mstore(add(freeMemoryPointer, 68), amount) // Append the "amount" argument. Masking not required as it's a full 32 byte type.

            success := and(
                // Set success to whether the call reverted, if not we check it either
                // returned exactly 1 (can't just be non-zero data), or had no return data.
                or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())),
                // We use 100 because the length of our calldata totals up like so: 4 + 32 * 3.
                // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space.
                // Counterintuitively, this call must be positioned second to the or() call in the
                // surrounding and() call or else returndatasize() will be zero during the computation.
                call(gas(), token, 0, freeMemoryPointer, 100, 0, 32)
            )
        }

        require(success, "TRANSFER_FROM_FAILED");
    }

    function safeTransfer(
        ERC20 token,
        address to,
        uint256 amount
    ) internal {
        bool success;

        /// @solidity memory-safe-assembly
        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata into memory, beginning with the function selector.
            mstore(freeMemoryPointer, 0xa9059cbb00000000000000000000000000000000000000000000000000000000)
            mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "to" argument.
            mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. Masking not required as it's a full 32 byte type.

            success := and(
                // Set success to whether the call reverted, if not we check it either
                // returned exactly 1 (can't just be non-zero data), or had no return data.
                or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())),
                // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2.
                // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space.
                // Counterintuitively, this call must be positioned second to the or() call in the
                // surrounding and() call or else returndatasize() will be zero during the computation.
                call(gas(), token, 0, freeMemoryPointer, 68, 0, 32)
            )
        }

        require(success, "TRANSFER_FAILED");
    }

    function safeApprove(
        ERC20 token,
        address to,
        uint256 amount
    ) internal {
        bool success;

        /// @solidity memory-safe-assembly
        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata into memory, beginning with the function selector.
            mstore(freeMemoryPointer, 0x095ea7b300000000000000000000000000000000000000000000000000000000)
            mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "to" argument.
            mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. Masking not required as it's a full 32 byte type.

            success := and(
                // Set success to whether the call reverted, if not we check it either
                // returned exactly 1 (can't just be non-zero data), or had no return data.
                or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())),
                // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2.
                // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space.
                // Counterintuitively, this call must be positioned second to the or() call in the
                // surrounding and() call or else returndatasize() will be zero during the computation.
                call(gas(), token, 0, freeMemoryPointer, 68, 0, 32)
            )
        }

        require(success, "APPROVE_FAILED");
    }
}

File 5 of 10 : WETH.sol
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

import {ERC20} from "./ERC20.sol";

import {SafeTransferLib} from "../utils/SafeTransferLib.sol";

/// @notice Minimalist and modern Wrapped Ether implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/WETH.sol)
/// @author Inspired by WETH9 (https://github.com/dapphub/ds-weth/blob/master/src/weth9.sol)
contract WETH is ERC20("Wrapped Ether", "WETH", 18) {
    using SafeTransferLib for address;

    event Deposit(address indexed from, uint256 amount);

    event Withdrawal(address indexed to, uint256 amount);

    function deposit() public payable virtual {
        _mint(msg.sender, msg.value);

        emit Deposit(msg.sender, msg.value);
    }

    function withdraw(uint256 amount) public virtual {
        _burn(msg.sender, amount);

        emit Withdrawal(msg.sender, amount);

        msg.sender.safeTransferETH(amount);
    }

    receive() external payable virtual {
        deposit();
    }
}

File 6 of 10 : IChad.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

interface IChad {
  function burn(address from, uint256 amount) external;

  function uniswapV2Pair() external returns (address);
}

File 7 of 10 : IUniswapV2Router.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

interface IUniswapV2Router {
  function factory() external pure returns (address);

  function WETH() external pure returns (address);

  function addLiquidity(
    address tokenA,
    address tokenB,
    uint256 amountADesired,
    uint256 amountBDesired,
    uint256 amountAMin,
    uint256 amountBMin,
    address to,
    uint256 deadline
  ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);

  function removeLiquidity(
    address tokenA,
    address tokenB,
    uint liquidity,
    uint amountAMin,
    uint amountBMin,
    address to,
    uint deadline
  ) external returns (uint amountA, uint amountB);

  function addLiquidityETH(
    address token,
    uint256 amountTokenDesired,
    uint256 amountTokenMin,
    uint256 amountETHMin,
    address to,
    uint256 deadline
  ) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);

  function swapExactTokensForTokensSupportingFeeOnTransferTokens(
    uint256 amountIn,
    uint256 amountOutMin,
    address[] calldata path,
    address to,
    uint256 deadline
  ) external;

  function swapExactETHForTokensSupportingFeeOnTransferTokens(
    uint256 amountOutMin,
    address[] calldata path,
    address to,
    uint256 deadline
  ) external payable;

  function swapExactTokensForETHSupportingFeeOnTransferTokens(
    uint256 amountIn,
    uint256 amountOutMin,
    address[] calldata path,
    address to,
    uint256 deadline
  ) external;
}

File 8 of 10 : ISwapRouter.sol
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;

import '@uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol';

/// @title Router token swapping functionality
/// @notice Functions for swapping tokens via Uniswap V3
interface ISwapRouter is IUniswapV3SwapCallback {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);

    struct ExactInputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);

    struct ExactOutputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);

    struct ExactOutputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}

File 9 of 10 : IQuoter.sol
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;

/// @title Quoter Interface
/// @notice Supports quoting the calculated amounts from exact input or exact output swaps
/// @dev These functions are not marked view because they rely on calling non-view functions and reverting
/// to compute the result. They are also not gas efficient and should not be called on-chain.
interface IQuoter {
    /// @notice Returns the amount out received for a given exact input swap without executing the swap
    /// @param path The path of the swap, i.e. each token pair and the pool fee
    /// @param amountIn The amount of the first token to swap
    /// @return amountOut The amount of the last token that would be received
    function quoteExactInput(bytes memory path, uint256 amountIn) external returns (uint256 amountOut);

    /// @notice Returns the amount out received for a given exact input but for a swap of a single pool
    /// @param tokenIn The token being swapped in
    /// @param tokenOut The token being swapped out
    /// @param fee The fee of the token pool to consider for the pair
    /// @param amountIn The desired input amount
    /// @param sqrtPriceLimitX96 The price limit of the pool that cannot be exceeded by the swap
    /// @return amountOut The amount of `tokenOut` that would be received
    function quoteExactInputSingle(
        address tokenIn,
        address tokenOut,
        uint24 fee,
        uint256 amountIn,
        uint160 sqrtPriceLimitX96
    ) external returns (uint256 amountOut);

    /// @notice Returns the amount in required for a given exact output swap without executing the swap
    /// @param path The path of the swap, i.e. each token pair and the pool fee. Path must be provided in reverse order
    /// @param amountOut The amount of the last token to receive
    /// @return amountIn The amount of first token required to be paid
    function quoteExactOutput(bytes memory path, uint256 amountOut) external returns (uint256 amountIn);

    /// @notice Returns the amount in required to receive the given exact output amount but for a swap of a single pool
    /// @param tokenIn The token being swapped in
    /// @param tokenOut The token being swapped out
    /// @param fee The fee of the token pool to consider for the pair
    /// @param amountOut The desired output amount
    /// @param sqrtPriceLimitX96 The price limit of the pool that cannot be exceeded by the swap
    /// @return amountIn The amount required as the input for the swap in order to receive `amountOut`
    function quoteExactOutputSingle(
        address tokenIn,
        address tokenOut,
        uint24 fee,
        uint256 amountOut,
        uint160 sqrtPriceLimitX96
    ) external returns (uint256 amountIn);
}

File 10 of 10 : IUniswapV3SwapCallback.sol
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

/// @title Callback for IUniswapV3PoolActions#swap
/// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
interface IUniswapV3SwapCallback {
    /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
    /// @dev In the implementation you must pay the pool tokens owed for the swap.
    /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
    /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
    /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
    /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
    /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes calldata data
    ) external;
}

Settings
{
  "remappings": [
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "solmate/=lib/solmate/src/",
    "@uniswap/v3-core/=lib/v3-core/",
    "@uniswap/v3-periphery/=lib/v3-periphery/contracts/",
    "v3-core/=lib/v3-core/",
    "v3-periphery/=lib/v3-periphery/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"routerAddressV2","type":"address"},{"internalType":"address","name":"routerAddressV3","type":"address"},{"internalType":"address","name":"timelockAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint8","name":"weight","type":"uint8"}],"name":"IndexComponentUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"chad","type":"address"}],"name":"SetChad","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"TokenPurchased","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"TokenRedeemed","type":"event"},{"inputs":[],"name":"BITCOIN","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DMT","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"HIGH_FEE","outputs":[{"internalType":"uint24","name":"","type":"uint24"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LOW_FEE","outputs":[{"internalType":"uint24","name":"","type":"uint24"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_BPS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"OX","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"RLB","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"UNIBOT","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"WETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"allTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"canUpdateWeights","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"chad","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"components","outputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint8","name":"weight","type":"uint8"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"enum Index.UniswapVersion","name":"version","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentTokenCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"enterNewParadigm","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"hasToken","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastPurchase","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"redeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"redemptionAmounts","outputs":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct Index.TokenAmount[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newChad","type":"address"}],"name":"setChad","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"timelock","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"tokens","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalTokenCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"uniswapV2Router","outputs":[{"internalType":"contract IUniswapV2Router","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"uniswapV3Router","outputs":[{"internalType":"contract ISwapRouter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint8","name":"weight","type":"uint8"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"enum Index.UniswapVersion","name":"version","type":"uint8"}],"internalType":"struct Index.IndexComponent[]","name":"newComponents","type":"tuple[]"}],"name":"updateWeights","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488d000000000000000000000000e592427a0aece92de3edee1f18e0157c058615640000000000000000000000006d85fba94a34496cbc0fa4acbdabb5b575f7cb82

-----Decoded View---------------
Arg [0] : routerAddressV2 (address): 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
Arg [1] : routerAddressV3 (address): 0xE592427A0AEce92De3Edee1F18E0157C05861564
Arg [2] : timelockAddress (address): 0x6d85fba94A34496cbC0fA4acbDaBB5B575F7Cb82

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488d
Arg [1] : 000000000000000000000000e592427a0aece92de3edee1f18e0157c05861564
Arg [2] : 0000000000000000000000006d85fba94a34496cbc0fa4acbdabb5b575f7cb82


Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.