ETH Price: $3,748.82 (-2.34%)
Gas: 10 Gwei

Token

 

Overview

Max Total Supply

0

Holders

0

Total Transfers

-

Market

Onchain Market Cap

$0.00

Circulating Supply Market Cap

-

Other Info

Loading...
Loading
Loading...
Loading
Loading...
Loading

Click here to update the token information / general information
# Exchange Pair Price  24H Volume % Volume

Contract Source Code Verified (Exact Match)

Contract Name:
SaffronTeamHodl

Compiler Version
v0.7.4+commit.3f05b770

Optimization Enabled:
Yes with 999999 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2020-12-20
*/

// File: contracts/lib/SafeMath.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.1;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// File: contracts/lib/IERC20.sol


pragma solidity ^0.7.1;

/**
 * @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: contracts/lib/Address.sol


pragma solidity ^0.7.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.3._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.3._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: contracts/lib/SafeERC20.sol


pragma solidity ^0.7.1;




/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
  using SafeMath for uint256;
  using Address for address;

  function safeTransfer(IERC20 token, address to, uint256 value) internal {
    _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
  }

  function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
    _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
  }

  /**
   * @dev Deprecated. This function has issues similar to the ones found in
   * {IERC20-approve}, and its usage is discouraged.
   *
   * Whenever possible, use {safeIncreaseAllowance} and
   * {safeDecreaseAllowance} instead.
   */
  function safeApprove(IERC20 token, address spender, uint256 value) internal {
    // safeApprove should only be called when setting an initial allowance,
    // or when resetting it to zero. To increase and decrease it, use
    // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
    // solhint-disable-next-line max-line-length
    require((value == 0) || (token.allowance(address(this), spender) == 0),
      "SafeERC20: approve from non-zero to non-zero allowance"
    );
    _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
  }

  function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
    uint256 newAllowance = token.allowance(address(this), spender).add(value);
    _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
  }

  function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
    uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
    _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
  }

  /**
   * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
   * on the return value: the return value is optional (but if data is returned, it must not be false).
   * @param token The token targeted by the call.
   * @param data The call data (encoded using abi.encode or one of its variants).
   */
  function _callOptionalReturn(IERC20 token, bytes memory data) private {
    // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
    // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
    // the target address contains contract code and also asserts for success in the low-level call.

    bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
    if (returndata.length > 0) { // Return data is optional
      // solhint-disable-next-line max-line-length
      require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }
  }
}

// File: contracts/lib/Context.sol


pragma solidity ^0.7.1;

/*
 * @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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// File: contracts/lib/ERC20.sol


pragma solidity ^0.7.1;





/**
 * @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 guidelines: functions revert instead
 * of 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 {
    using SafeMath for uint256;
    using Address for address;

    mapping (address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

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

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view 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 {_setupDecimals} is
     * called.
     *
     * 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 returns (uint8) {
        return _decimals;
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view 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);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        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].add(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) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is 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);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(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
     *
     * - `to` 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 = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(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);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is 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 Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

    /**
     * @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 to 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 { }
}

// File: contracts/SaffronLPBalanceToken.sol


pragma solidity ^0.7.1;


contract SaffronLPBalanceToken is ERC20 {
  address public pool_address;

  constructor (string memory name, string memory symbol) ERC20(name, symbol) {
    // Set pool_address to saffron pool that created token
    pool_address = msg.sender;
  }

  // Allow creating new tranche tokens
  function mint(address to, uint256 amount) public {
    require(msg.sender == pool_address, "must be pool");
    _mint(to, amount);
  }

  function burn(address account, uint256 amount) public {
    require(msg.sender == pool_address, "must be pool");
    _burn(account, amount);
  }

  function set_governance(address to) external {
    require(msg.sender == pool_address, "must be pool");
    pool_address = to;
  }
}

// File: contracts/SaffronTeamHodl.sol


pragma solidity ^0.7.1;





contract SaffronTeamHodl {
  using SafeMath for uint256;
  using SafeERC20 for IERC20;

  IERC20 public constant SFI = IERC20(address(0xb753428af26E81097e7fD17f40c88aaA3E04902c));
  uint256 public immutable creation_date;
  SaffronLPBalanceToken public lp_token;

  constructor(address lp_token_address) {
    require(lp_token_address != address(0x0), "can't use 0 address for LP token");
    lp_token = SaffronLPBalanceToken(lp_token_address);
    creation_date = block.timestamp;
  }

  event HodlSFI(address addr, uint256 amount);
  function hodl_SFI(uint256 amount) external {
    require(amount != 0, "can't hodl 0");
    SFI.safeTransferFrom(msg.sender, address(this), amount);
    lp_token.mint(msg.sender, amount);
    emit HodlSFI(msg.sender, amount);
  }

  event RedeemSFI(address addr, uint256 amount);
  function redeem_SFI(uint256 amount) external {
    require(amount != 0, "can't redeem 0");
    require(block.timestamp > (creation_date + 372 days), "must be more than 1 year from creation");
    require(lp_token.balanceOf(msg.sender) >= amount, "insufficient LP tokens to redeem SFI");
    lp_token.burn(msg.sender, amount);
    SFI.safeTransfer(msg.sender, amount);
    emit RedeemSFI(msg.sender, amount);
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"lp_token_address","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"addr","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"HodlSFI","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"addr","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"RedeemSFI","type":"event"},{"inputs":[],"name":"SFI","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"creation_date","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"hodl_SFI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lp_token","outputs":[{"internalType":"contract SaffronLPBalanceToken","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"redeem_SFI","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

Deployed Bytecode

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

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

0000000000000000000000004e5ee20900898054e998fd1862742c28c651bf5d

-----Decoded View---------------
Arg [0] : lp_token_address (address): 0x4E5EE20900898054E998fD1862742c28C651Bf5d

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000004e5ee20900898054e998fd1862742c28c651bf5d


Deployed Bytecode Sourcemap

32584:1261:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;33424:418;;;;;;;;;;;;;;;;-1:-1:-1;33424:418:0;;:::i;:::-;;32771:38;;;:::i;:::-;;;;;;;;;;;;;;;;32678:88;;;:::i;:::-;;;;;;;;;;;;;;;;;;;32814:37;;;:::i;33135:233::-;;;;;;;;;;;;;;;;-1:-1:-1;33135:233:0;;:::i;33424:418::-;33484:11;33476:38;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;33548:13;33564:8;33548:24;33529:15;:44;33521:95;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;33631:8;;:30;;;;;;33650:10;33631:30;;;;;;33665:6;;33631:8;;;:18;;:30;;;;;;;;;;;;;;:8;:30;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;33631:30:0;:40;;33623:89;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;33719:8;;;:33;;;;;;33733:10;33719:33;;;;;;;;;;;;:8;;;;;:13;;:33;;;;;;;;;;:8;;:33;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;33759:36:0;;-1:-1:-1;32722:42:0;;-1:-1:-1;33776:10:0;;-1:-1:-1;33788:6:0;33759:16;:36::i;:::-;33807:29;;;33817:10;33807:29;;;;;;;;;;;;;;;;;;;;;33424:418;:::o;32771:38::-;;;:::o;32678:88::-;32722:42;32678:88;:::o;32814:37::-;;;;;;:::o;33135:233::-;33193:11;33185:36;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;33228:55;32722:42;33249:10;33269:4;33276:6;33228:20;:55::i;:::-;33290:8;;;:33;;;;;;33304:10;33290:33;;;;;;;;;;;;:8;;;;;:13;;:33;;;;;;;;;;:8;;:33;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;33335:27:0;;;33343:10;33335:27;;;;;;;;;;;;-1:-1:-1;33335:27:0;;;;;;;;-1:-1:-1;33335:27:0;33135:233;:::o;16817:171::-;16923:58;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;16946:23;16923:58;;;16896:86;;16916:5;;16896:19;:86::i;:::-;16817:171;;;:::o;16994:199::-;17118:68;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;17141:27;17118:68;;;17091:96;;17111:5;;17091:19;:96::i;:::-;16994:199;;;;:::o;19018:723::-;19426:23;19452:69;19480:4;19452:69;;;;;;;;;;;;;;;;;19460:5;19452:27;;;;:69;;;;;:::i;:::-;19532:17;;19426:95;;-1:-1:-1;19532:21:0;19528:208;;19662:10;19651:30;;;;;;;;;;;;;;;-1:-1:-1;19651:30:0;19643:85;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;11848:195;11951:12;11983:52;12005:6;12013:4;12019:1;12022:12;11983:21;:52::i;:::-;11976:59;;11848:195;;;;;;:::o;12900:530::-;13027:12;13085:5;13060:21;:30;;13052:81;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;13152:18;13163:6;13152:10;:18::i;:::-;13144:60;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;13278:12;13292:23;13319:6;:11;;13339:5;13347:4;13319:33;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;13277:75;;;;13370:52;13388:7;13397:10;13409:12;13370:17;:52::i;:::-;13363:59;12900:530;-1:-1:-1;;;;;;;12900:530:0:o;8928:422::-;9295:20;9334:8;;;8928:422::o;15440:742::-;15555:12;15584:7;15580:595;;;-1:-1:-1;15615:10:0;15608:17;;15580:595;15729:17;;:21;15725:439;;15992:10;15986:17;16053:15;16040:10;16036:2;16032:19;16025:44;15940:148;16135:12;16128:20;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Swarm Source

ipfs://4994194aca335d2da7a0ae6f1859fa134a4b3cc905c175a7db79cb7f920ae482
Loading...
Loading
[ Download: CSV Export  ]

A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.