Mumbai Testnet

Token

InstantPoolToken (IPT)
ERC-20

Overview

Max Total Supply

0 IPT

Holders

1

Total Transfers

-

Market

Price

$0.00 @ 0.000000 MATIC

Onchain Market Cap

$0.00

Circulating Supply Market Cap

-

Other Info

Token Contract (WITH 18 Decimals)

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x648f1b4f...66137d8F2
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
InstantPool

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 8 : InstantPool.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.8.4;

import "./interfaces/IInstantPool.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

contract InstantPool is IInstantPool, ERC20, Ownable, ReentrancyGuard {

    modifier nonZeroAddress(address _address) {
        require(_address != address(0), "InstantPool: zero address");
        _;
    }

    // Constants
    uint constant MAX_INSTANT_PERCENTAGE_FEE = 10000;

    address public override teleBTC;
    uint public override instantPercentageFee; // a number between 0-10000 to show %0.01
    uint public override totalAddedTeleBTC;
    address public override instantRouter;

    constructor(
        address _teleBTC,
        address _instantRouter,
        uint _instantPercentageFee,
        string memory _name,
        string memory _symbol
    ) ERC20(_name, _symbol) {
        _setTeleBTC(_teleBTC);
        _setInstantRouter(_instantRouter);
        _setInstantPercentageFee(_instantPercentageFee);

        emit CreatedInstantPool(_teleBTC);
    }

    function renounceOwnership() public virtual override onlyOwner {}

    /// @notice                               Gives available teleBTC amount
    /// @return                               Available amount of teleBTC that can be borrowed
    function availableTeleBTC() override public view returns (uint) {
        return IERC20(teleBTC).balanceOf(address(this));
    }

    /// @notice                               Gives the unpaid loans amount
    /// @return                               Amount of teleBTC that has been borrowed but has not been paid back
    function totalUnpaidLoan() override external view returns (uint) {
        uint _availableTeleBTC = availableTeleBTC();
        return totalAddedTeleBTC >= _availableTeleBTC ? totalAddedTeleBTC - _availableTeleBTC : 0;
    }

    /// @notice                 Changes instant router contract address
    /// @dev                    Only owner can call this
    /// @param _instantRouter   The new instant router contract address
    function setInstantRouter(address _instantRouter) external override onlyOwner {
        _setInstantRouter(_instantRouter);
    }

    /// @notice                        Changes instant loan fee
    /// @dev                           Only current owner can call this
    /// @param _instantPercentageFee   The new percentage fee
    function setInstantPercentageFee(uint _instantPercentageFee) external override onlyOwner {
        _setInstantPercentageFee(_instantPercentageFee);
    }

    /// @notice                 Changes teleBTC contract address
    /// @dev                    Only owner can call this
    /// @param _teleBTC         The new teleBTC contract address
    function setTeleBTC(address _teleBTC) external override onlyOwner {
        _setTeleBTC(_teleBTC);
    }

    /// @notice                 Internal setter for instant router contract address
    /// @param _instantRouter   The new instant router contract address
    function _setInstantRouter(address _instantRouter) nonZeroAddress(_instantRouter) private {
        emit NewInstantRouter(instantRouter, _instantRouter);
        instantRouter = _instantRouter;
    }

    /// @notice                         Internal setter for instant loan fee
    /// @param _instantPercentageFee    The new percentage fee
    function _setInstantPercentageFee(uint _instantPercentageFee) private {
        emit NewInstantPercentageFee(instantPercentageFee, _instantPercentageFee);
        require(
            _instantPercentageFee <= MAX_INSTANT_PERCENTAGE_FEE,
            "InstantPool: amount more than max"
        );
        instantPercentageFee = _instantPercentageFee;
    }

    /// @notice                 Internal setter for teleBTC contract address
    /// @param _teleBTC         The new teleBTC contract address
    function _setTeleBTC(address _teleBTC) nonZeroAddress(_teleBTC) private {
        emit NewTeleBTC(teleBTC, _teleBTC);
        teleBTC = _teleBTC;
    }

    function getFee(uint _loanAmount) external view override returns (uint) {
        return _loanAmount*instantPercentageFee/MAX_INSTANT_PERCENTAGE_FEE;
    }

    /// @notice               Adds liquidity to instant pool
    /// @dev
    /// @param _user          Address of user who receives instant pool token
    /// @param _amount        Amount of liquidity that user wants to add
    /// @return               Amount of instant pool token that user receives
    function addLiquidity(address _user, uint _amount) external nonReentrant override returns (uint) {
        require(_amount > 0, "InstantPool: input amount is zero");
        uint instantPoolTokenAmount;
        // Transfers teleBTC from user
        IERC20(teleBTC).transferFrom(_msgSender(), address(this), _amount);
        if (totalAddedTeleBTC == 0 || totalSupply() == 0) {
            instantPoolTokenAmount = _amount;
        } else {
            instantPoolTokenAmount = _amount*totalSupply()/totalAddedTeleBTC;
        }
        totalAddedTeleBTC = totalAddedTeleBTC + _amount;
        // Mints instant pool token for user
        _mint(_user, instantPoolTokenAmount);
        emit AddLiquidity(_user, _amount, instantPoolTokenAmount);
        return instantPoolTokenAmount;
    }

    /// @notice               Adds liquidity to instant pool without minting instant pool tokens
    /// @dev                  Updates totalAddedTeleBTC (transferring teleBTC directly does not update it)
    /// @param _amount        Amount of liquidity that user wants to add
    /// @return               True if liquidity is added successfully
    function addLiquidityWithoutMint(uint _amount) external nonReentrant override returns (bool) {
        require(_amount > 0, "InstantPool: input amount is zero");
        // Transfers teleBTC from user
        IERC20(teleBTC).transferFrom(_msgSender(), address(this), _amount);
        totalAddedTeleBTC = totalAddedTeleBTC + _amount;
        emit AddLiquidity(_msgSender(), _amount, 0);
        return true;
    }

    /// @notice                               Removes liquidity from instant pool
    /// @dev
    /// @param _user                          Address of user who receives teleBTC
    /// @param _instantPoolTokenAmount        Amount of instant pool token that is burnt
    /// @return                               Amount of teleBTC that user receives
    function removeLiquidity(address _user, uint _instantPoolTokenAmount) external nonReentrant override returns (uint) {
        require(_instantPoolTokenAmount > 0, "InstantPool: input amount is zero");
        require(balanceOf(_msgSender()) >= _instantPoolTokenAmount, "InstantPool: balance is not sufficient");
        uint teleBTCAmount = _instantPoolTokenAmount*totalAddedTeleBTC/totalSupply();
        totalAddedTeleBTC = totalAddedTeleBTC - teleBTCAmount;
        _burn(_msgSender(), _instantPoolTokenAmount);
        IERC20(teleBTC).transfer(_user, teleBTCAmount);
        emit RemoveLiquidity(_msgSender(), teleBTCAmount, _instantPoolTokenAmount);
        return teleBTCAmount;
    }

    /// @notice                               Gives loan to user
    /// @dev                                  Only instant router contract can call this
    /// @param _user                          Address of user who wants loan
    /// @param _amount                        Amount of requested loan
    /// @return                               Amount of given loan after reducing the fee
    function getLoan(address _user, uint _amount) nonReentrant override external returns (bool) {
        require(_msgSender() == instantRouter, "InstantPool: sender is not allowed");
        require(availableTeleBTC() >= _amount, "InstantPool: liquidity is not sufficient");
        // Instant fee increases the total teleBTC amount
        uint instantFee = _amount*instantPercentageFee/MAX_INSTANT_PERCENTAGE_FEE;
        IERC20(teleBTC).transfer(_user, _amount);
        emit InstantLoan(_user, _amount, instantFee);
        return true;
    }

}

File 2 of 8 : IInstantPool.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.8.4;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IInstantPool is IERC20 {

	// Events

	/// @notice 							emits when an instant pool is created 
	/// @param instantToken 				The instant token of this instant pool
	event CreatedInstantPool(address indexed instantToken);

	/// @notice                             emits when some liquidity gets added to the pool               
	/// @param user                         User who added the liquidity
	/// @param teleBTCAmount                Amount of teleBTC added to the pool
	/// @param instantPoolTokenAmount       User's share from the pool
	event AddLiquidity(address indexed user, uint teleBTCAmount, uint instantPoolTokenAmount); 

	/// @notice                             Emits when some liquidity gets removed from the pool
	/// @param user                         User who removed the liquidity
	/// @param teleBTCAmount                Amount of teleBTC removed from the pool
	/// @param instantPoolTokenAmount       User's share from the pool
	event RemoveLiquidity(address indexed user, uint teleBTCAmount, uint instantPoolTokenAmount);

	/// @notice                       		Gets an instant loan from the contract
	/// @param user                   		User who wants to get the loan
	/// @param requestedAmount        		Amount of loan requested and sent to the user
	/// @param instantFee             		Amount of fee that the user should pay back later with the loan
	event InstantLoan(address indexed user, uint256 requestedAmount, uint instantFee);

	/// @notice                       		Emits when changes made to instant router address
	event NewInstantRouter(address oldInstantRouter, address newInstaneRouter);

	/// @notice                       		Emits when changes made to instant percentage fee
	event NewInstantPercentageFee(uint oldInstantPercentageFee, uint newInstantPercentageFee);

	/// @notice                       		Emits when changes made to TeleBTC address
	event NewTeleBTC(address oldTeleBTC, address newTeleBTC);

	// Read-only functions

	function teleBTC() external view returns (address);

	function instantRouter() external view returns (address);

	function totalAddedTeleBTC() external view returns (uint);

	function availableTeleBTC() external view returns (uint);

	function totalUnpaidLoan() external view returns (uint);

	function instantPercentageFee() external view returns (uint);

	function getFee(uint _loanAmount) external view returns (uint);

	// State-changing functions

	function setInstantRouter(address _instantRouter) external;

	function setInstantPercentageFee(uint _instantPercentageFee) external;

	function setTeleBTC(address _teleBTC) external;

	function addLiquidity(address _user, uint _amount) external returns (uint);

	function addLiquidityWithoutMint(uint _amount) external returns (bool);

	function removeLiquidity(address _user, uint _instantPoolTokenAmount) external returns (uint);

	function getLoan(address _user, uint _amount) external returns (bool);

}

File 3 of 8 : ERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

File 4 of 8 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 5 of 8 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

File 6 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 7 of 8 : IERC20Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

File 8 of 8 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract ABI

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,{"inputs":[{"internalType":"address","name":"_user","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"getLoan","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"instantPercentageFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"instantRouter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"},{"internalType":"uint256","name":"_instantPoolTokenAmount","type":"uint256"}],"name":"removeLiquidity","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_instantPercentageFee","type":"uint256"}],"name":"setInstantPercentageFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_instantRouter","type":"address"}],"name":"setInstantRouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_teleBTC","type":"address"}],"name":"setTeleBTC","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"teleBTC","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAddedTeleBTC","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalUnpaidLoan","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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