Contract 0x0391bE54E72F7e001f6BBc331777710b4f2999Ef 3

 
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0x03643ff3b68fd617690cd7b98ce360c53fc719eea6be993c7a0e59dd8de1c572Approve119065782021-10-19 10:59:3446 secs ago0x0b682d49f98b2069e3c118a2d4627a8198b25d37 IN  Trava Finance: TRAVA Token0 BNB0.000222545
0x94c131e6a8bce7f7cf8edfc4913dbcca74681cee6c0493674955ff90b34c7c97Approve119064972021-10-19 10:55:304 mins ago0xcf156bddb649aba493b508e43b02bfd455a62b5f IN  Trava Finance: TRAVA Token0 BNB0.000221165
0xbe283d9b26e46b32d0bd64d5099ac6c863b3cf91ee2937c4eb4769fc887a72d3Transfer119063922021-10-19 10:50:1510 mins ago0xb744a172a657de2aa09d9d01abe3c4b794ab3f9c IN  Trava Finance: TRAVA Token0 BNB0.00010659
0xeee3444e25b2ba0720e476b38293b591e2d0c544c7bf538d0a9f2a9a9a7e9b90Approve119060602021-10-19 10:33:3926 mins ago0xe200b5bafd61daed4dabfe88cf1883c4189190b8 IN  Trava Finance: TRAVA Token0 BNB0.000222545
0x5814e5d3eebfca63e6abb4e282364ce09f9f8c6572cdbc260435af5124fe98b9Approve119060502021-10-19 10:33:0927 mins ago0x1c13523ac378a097d83e04c3602ad8703492d6aa IN  Trava Finance: TRAVA Token0 BNB0.000221105
0xbd77beabf283b30c82dfd50cf89bd6e8059467b89be6ce4be190255b5b82a875Approve119058552021-10-19 10:23:2436 mins ago0x786bef9870b33f531e4dec998b749ba6505a3947 IN  Trava Finance: TRAVA Token0 BNB0.000222545
0x92cf09afe6d2752031f4dfaeb4a71e9feb8854bc376a477b192102080bcfdfebApprove119053622021-10-19 9:58:431 hr 1 min ago0x614f8a3309267c57d973e156fe38dfbc38292b54 IN  Trava Finance: TRAVA Token0 BNB0.000222545
0x1150f27ec38678a2d89c353d010cfc47741d363b9c787373010b293064b6ac8aApprove119051092021-10-19 9:45:541 hr 14 mins ago0x9817202b8cbbf8abc9a99d3b9a8952bf31d83982 IN  Trava Finance: TRAVA Token0 BNB0.000222545
0x06f77deccd3190e43b9cd15a6186ee8e28740e19a044b8a1b680e86271a3ee72Approve119050562021-10-19 9:43:151 hr 17 mins ago0x9801ea04779d247e6008e937c4baa7fedd3c3e58 IN  Trava Finance: TRAVA Token0 BNB0.000221165
0x96f5dcb6b93c9eb119c8fb140332812a4e5852670084df71d4885d3e62aa6e06Approve119050482021-10-19 9:42:511 hr 17 mins ago0xee92183da30e305a1b1490e1bbb5014ffe2fb3b1 IN  Trava Finance: TRAVA Token0 BNB0.000222545
0xc53026660d1dd93545640dadef53d806ff4cefe04068db75501a32371b481878Approve119048532021-10-19 9:33:061 hr 27 mins ago0x17511a07340305cc9dcffa3c85275a3a35854675 IN  Trava Finance: TRAVA Token0 BNB0.000222545
0xa453cd94d6073c695a5ae9cbba7407b13d0f05e373be2c76a4f8670680254e58Approve119042522021-10-19 9:03:031 hr 57 mins ago0x4c5b694d622ff593d56ecd60e4b887171c7b801d IN  Trava Finance: TRAVA Token0 BNB0.000311563
0xadf0dec9a42d18a016ed1c8764f520168d7d6055aa9e1cd6d3926d1e5ba935f8Transfer119040292021-10-19 8:51:542 hrs 8 mins ago0xe1dce3173256f324e9f18f9b4d4f7337a52e0617 IN  Trava Finance: TRAVA Token0 BNB0.00010659
0x20de689f103dd6dcc9b5170dbb87785b9a0dfcfb7a5e1408105833391cf7e8afApprove119037212021-10-19 8:36:302 hrs 23 mins ago0xc7759950934e471f326344c62e5aa5aac2c14fb5 IN  Trava Finance: TRAVA Token0 BNB0.000221165
0x7bab9f7107654dda1c7303d7b53f983d81e40a72e342c4d9324a048820bb3079Approve119036222021-10-19 8:31:332 hrs 28 mins ago0x1f35697ec29a8bb9612c2d52822415c3a7d3d030 IN  Trava Finance: TRAVA Token0 BNB0.000221105
0xf4103aae7ad74def25a0b33af80c8705cab76252e330aab09e9ed07ef84523e1Approve119033552021-10-19 8:18:122 hrs 42 mins ago0x55fd84a5fbc06d4d4c97127b28a12f1db95ebe49 IN  Trava Finance: TRAVA Token0 BNB0.000222545
0x0f08a6de715f6116d27fb70d36cfa6bba7734e325a08e4bb820a299dafd2744fApprove119030262021-10-19 8:01:452 hrs 58 mins ago0xe1a4eff4e6a8843408cecfb010a4dfef46a3e85f IN  Trava Finance: TRAVA Token0 BNB0.000221105
0x8716157d2dbe0a89da93b1be259b176863e182addc38016c696ddc25d10c3021Approve119025772021-10-19 7:39:183 hrs 21 mins ago0x08358020864d5a836246e4616408d9520cb676d5 IN  Trava Finance: TRAVA Token0 BNB0.000221105
0xc67f844d99cd5e4c49a4b367a35eee3f143920f14c7f906c8c134876988a3923Approve119024872021-10-19 7:34:483 hrs 25 mins ago0x5c49405e23e813f736040bb7d0851224363b47bc IN  Trava Finance: TRAVA Token0 BNB0.000221105
0x4806cbc3df8dac6509b481d6bfdd81a9495fe985b498b271926fb95e162f5d6aApprove119024082021-10-19 7:30:513 hrs 29 mins ago0x662b0da61b0b6ed8b23f0ce3c0af9fb8afc8e24e IN  Trava Finance: TRAVA Token0 BNB0.000222545
0x855af92aa8eae47043ba25c6347b9695345a9f16d3dc251d528d152238b2de83Approve119023642021-10-19 7:28:393 hrs 31 mins ago0x64f3a43a3738fea5cadf8e10d471d81fbd015d42 IN  Trava Finance: TRAVA Token0 BNB0.000221165
0xe2cd6978c3d36cd6ce351db10c65b1cccafe97772bddfaac749e06234b57648eApprove119022422021-10-19 7:22:333 hrs 37 mins ago0xb13865da25da7b924c482d8acadc47a156a193f2 IN  Trava Finance: TRAVA Token0 BNB0.000267054
0x89797f2ac607453307d3811c541b16c9a1e758551de50ed480e9716fa90e921cApprove119020532021-10-19 7:13:063 hrs 47 mins ago0xbd62385f9cf041f4f668925d91e73ae34b77ef5e IN  Trava Finance: TRAVA Token0 BNB0.000222545
0xe33c5e78cee71f670f6432646ea6a6688a4d7a6b9c62a8914b9f19451e8572fbTransfer119019832021-10-19 7:09:363 hrs 50 mins ago0xd37c4cc9d0708bbe95e8935bd11f9fa66b99049b IN  Trava Finance: TRAVA Token0 BNB0.00010659
0xc774aa401d4718def93a219fcaf969c9d6780215e005bb4596a2fe9cacd06e37Transfer119019632021-10-19 7:08:363 hrs 51 mins ago0x8c128dba2cb66399341aa877315be1054be75da8 IN  Trava Finance: TRAVA Token0 BNB0.00018165
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OVERVIEW

TRAVA is adecentralized marketplace for cross-chain lending that relies on an innovative model of multiple lending pools created by users.

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Contract Source Code Verified (Exact Match)

Contract Name:
TravaToken

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

/**
 *Submitted for verification at BscScan.com on 2021-08-06
*/

/**
 *Submitted for verification at BscScan.com on 2021-07-02
*/

pragma solidity 0.5.16;

interface IBEP20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

    /**
     * @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);
}


contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor () internal {}

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

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

/**
 * @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) {
        // Solidity only automatically asserts when dividing by 0
        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;
    }
}

/**
 * @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.
 */
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 () internal {
    address msgSender = _msgSender();
    _owner = msgSender;
    emit OwnershipTransferred(address(0), msgSender);
  }

  /**
   * @dev Returns the address of the current owner.
   */
  function owner() public view 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 onlyOwner {
    emit OwnershipTransferred(_owner, address(0));
    _owner = 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 onlyOwner {
    _transferOwnership(newOwner);
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
   */
  function _transferOwnership(address newOwner) internal {
    require(newOwner != address(0), "Ownable: new owner is the zero address");
    emit OwnershipTransferred(_owner, newOwner);
    _owner = newOwner;
  }
}

contract BEP677Receiver {
    function onTokenTransfer(address _sender, uint _value, bytes calldata _data) external;
}

contract TravaToken is Context, IBEP20, Ownable {
    using SafeMath for uint256;
    
    mapping (address => uint256) private _balances;
    
    mapping (address => mapping (address => uint256)) private _allowances;
    
    uint256 private _totalSupply;
    uint8 private _decimals;
    string private _symbol;
    string private _name;
    
    constructor() public {
        _name = "TravaFinance Token";
        _symbol = "TRAVA";
        _decimals = 18;
        _totalSupply = 5 * 10e26;
        _balances[msg.sender] = _totalSupply;
    
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    /**
     * @dev Returns the bep token owner.
    */
    function getOwner() external view returns (address) {
        return owner();
    }

    /**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory) {
        return _symbol;
    }

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

    /**
    * @dev See {BEP20-totalSupply}.
    */
    function totalSupply() external view returns (uint256) {
        return _totalSupply;
    }

    /**
    * @dev See {BEP20-balanceOf}.
    */
    function balanceOf(address account) external view returns (uint256) {
        return _balances[account];
    }

    /**
    * @dev See {BEP20-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 returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
    * @dev See {BEP20-allowance}.
    */
    function allowance(address owner, address spender) external view returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
    * @dev See {BEP20-approve}.
    *
    * Requirements:
    *
    * - `spender` cannot be the zero address.
    */
    function approve(address spender, uint256 amount) external returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
    * @dev See {BEP20-transferFrom}.
    *
    * Emits an {Approval} event indicating the updated allowance. This is not
    * required by the EIP. See the note at the beginning of {BEP20};
    *
    * 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) external returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "BEP20: 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 {BEP20-approve}.
    *
    * Emits an {Approval} event indicating the updated allowance.
    *
    * Requirements:
    *
    * - `spender` cannot be the zero address.
    */
    function increaseAllowance(address spender, uint256 addedValue) public 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 {BEP20-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 returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "BEP20: decreased allowance below zero"));
        return true;
    }

    /**
    * @dev Creates `amount` tokens and assigns them to `msg.sender`, increasing
    * the total supply.
    *
    * Requirements
    *
    * - `msg.sender` must be the token owner
    */
    function mint(uint256 amount) public onlyOwner returns (bool) {
        _mint(_msgSender(), amount);
        return true;
    }
    
    /**
    * @dev Burn `amount` tokens , decreasing
    * the total supply.
    *
    * Requirements
    *
    * - `msg.sender` must be the token owner
    */
    function burn(address _to, uint256 _amount) public onlyOwner returns (bool) {
        _burn(_to, _amount);
        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 {
        require(sender != address(0), "BEP20: transfer from the zero address");
        require(recipient != address(0), "BEP20: transfer to the zero address");

        _balances[sender] = _balances[sender].sub(amount, "BEP20: 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 {
        require(account != address(0), "BEP20: mint to the zero address");

        _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 {
        require(account != address(0), "BEP20: burn from the zero address");

        _balances[account] = _balances[account].sub(amount, "BEP20: 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 {
        require(owner != address(0), "BEP20: approve from the zero address");
        require(spender != address(0), "BEP20: approve to the zero address");

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

    /**
    * @dev Destroys `amount` tokens from `account`.`amount` is then deducted
    * from the caller's allowance.
    *
    * See {_burn} and {_approve}.
    */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "BEP20: burn amount exceeds allowance"));
    }
    
    event Transfer(address indexed from, address indexed to, uint value, bytes data);
    /**
    * @dev transfer token to a contract address with additional data if the recipient is a contact.
    * @param _to The address to transfer to.
    * @param _value The amount to be transferred.
    * @param _data The extra data to be passed to the receiving contract.
    */
    function transferAndCall(address _to, uint _value, bytes memory _data)
    public
    returns (bool success)
    {
        transfer(_to, _value);
        emit Transfer(msg.sender, _to, _value, _data);
        if (isContract(_to)) {
            contractFallback(_to, _value, _data);
        }
        return true;
    }

    // PRIVATE

    function contractFallback(address _to, uint _value, bytes memory _data)
    private
    {
        BEP677Receiver receiver = BEP677Receiver(_to);
        receiver.onTokenTransfer(msg.sender, _value, _data);
    }

    function isContract(address _addr)
    private
    returns (bool hasCode)
    {
        uint length;
        assembly {length := extcodesize(_addr)}
        return length > 0;
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"constant":true,"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"burn","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"getOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"renounceOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"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"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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Swarm Source

bzzr://cb99e884c599374d218c1d96190ee16daaf72a0538671ccbdd581b8b9b513bcf
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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