ETH Price: $3,480.91 (+2.61%)
Gas: 3.94 Gwei

Token

Perpetual (PERP)
 

Overview

Max Total Supply

150,000,000 PERP

Holders

13,724 (0.00%)

Market

Price

$0.87 @ 0.000250 ETH (+5.74%)

Onchain Market Cap

$130,493,250.00

Circulating Supply Market Cap

$63,056,281.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
14,905.82713382 PERP

Value
$12,967.40 ( ~3.7253 Eth) [0.0099%]
0x10Dce18d6B5C779bc8DE620F8D0a561dfc3a51F0
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OVERVIEW

Perpetual Protocol is composed of two parts: Uniswap-inspired virtual AMMs backed by fully collateralized vaults and a built-in staking pool that provide a backstop for each virtual market.

Market

Volume (24H):$10,783,986.00
Market Capitalization:$63,056,281.00
Circulating Supply:72,609,864.00 PERP
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Binance
PERP-USDT$0.8706
0.0002499 Eth
$2,052,896.00
2,364,339.960 PERP
18.9793%
2
Biconomy.com
PERP-USDT$0.8711
0.0002498 Eth
$1,755,253.00
2,043,806.220 PERP
16.4063%
3
Hotcoin
PERP-USDT$0.8726
0.0002501 Eth
$1,055,276.00
1,209,300.310 PERP
9.7074%
4
Coinbase Exchange
PERP-USD$0.8744
0.0002508 Eth
$903,503.00
1,033,283.082 PERP
8.2945%
5
Bitget
PERP-USDT$0.8708
0.0002498 Eth
$660,990.00
767,001.630 PERP
6.1570%
6
Bitrue
PERP3L-USDT$0.0007
0.0000002 Eth
$493,223.00
729,076,809.000 PERP3L
5,852.5253%
7
BYDFi
PERP-USDT$0.8733
0.0002503 Eth
$440,090.00
503,935.040 PERP
4.0452%
8
Bitrue
PERP3S-USDT$0.1988
0.0000571 Eth
$404,864.00
2,036,114.045 PERP3S
16.3445%
9
BTSE
PERP-USDT$0.8675
0.0002498 Eth
$343,309.00
395,746.036 PERP
3.1768%
10
OKX
PERP-USDT$0.8727
0.0002503 Eth
$332,754.00
381,344.688 PERP
3.0612%
11
Ourbit
PERP-USDT$0.8737
0.0002504 Eth
$288,714.00
332,604.130 PERP
2.6699%
12
LBank
PERP-USDT$0.872
0.0002500 Eth
$274,272.00
314,527.590 PERP
2.5248%
13
Bybit
PERP-USDT$0.8722
0.0002502 Eth
$254,405.00
292,721.400 PERP
2.3498%
14
Bitrue
PERP-USDT$0.8706
0.0002499 Eth
$222,149.00
255,164.020 PERP
2.0483%
15
Azbit
PERP-USDT$0.8727
0.0002502 Eth
$198,621.00
228,667.286 PERP
1.8356%
16
Bitunix
PERP-USDT$0.8716
0.0002499 Eth
$156,285.00
179,284.380 PERP
1.4392%
17
CoinW
PERP-USDT$0.8729
0.0002502 Eth
$149,175.00
170,889.549 PERP
1.3718%
18
XT.COM
PERP-USDT$0.8723
0.0002500 Eth
$146,762.00
168,954.030 PERP
1.3562%
19
HTX
PERP-USDT$0.8724
0.0002502 Eth
$138,021.00
160,382.993 PERP
1.2874%
20
CoinCatch
PERP-USDT$0.872
0.0002501 Eth
$137,486.00
159,910.980 PERP
1.2837%
21
Uniswap V3 (Ethereum)
0XBC396689893D065F41BC2C6ECBEE5E0085233447-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$0.8741
0.0002507 Eth
$115,118.00
131,599.244 0XBC396689893D065F41BC2C6ECBEE5E0085233447
1.0564%
22
Gate.io
PERP-USDT$0.8713
0.0002499 Eth
$113,191.00
131,009.420 PERP
1.0517%
23
Phemex
PERP-USDT$0.8739
0.0002505 Eth
$102,020.00
116,735.790 PERP
0.9371%
24
Tapbit
PERP-USDT$0.8713
0.0002498 Eth
$87,972.00
102,806.700 PERP
0.8253%
25
Uniswap V3 (Optimism)
0X9E1028F5F1D5EDE59748FFCEE5532509976840E0-0X4200000000000000000000000000000000000006$0.8653
0.0002480 Eth
$86,363.00
98,976.608 0X9E1028F5F1D5EDE59748FFCEE5532509976840E0
0.7945%
26
BitMart
PERP-USDT$0.8743
0.0002507 Eth
$82,184.00
94,004.540 PERP
0.7546%
27
Kraken
PERP-EUR$0.8658
0.0002484 Eth
$69,938.00
80,776.241 PERP
0.6484%
28
Bit2Me
PERP-EUR$0.8658
0.0002482 Eth
$69,034.00
79,160.716 PERP
0.6354%
29
Tokenize
PERP-SGD$0.8658
0.0002484 Eth
$61,708.00
71,276.040 PERP
0.5722%
30
Tokenize
PERP-USD$0.8623
0.0002478 Eth
$61,566.00
71,398.091 PERP
0.5731%
31
Kraken
PERP-USD$0.873
0.0002504 Eth
$60,273.00
69,041.611 PERP
0.5542%
32
Koinpark
PERP-USDT$0.8735
0.0002503 Eth
$54,674.00
62,592.481 PERP
0.5024%
33
BingX
PERP-USDT$0.8713
0.0002499 Eth
$54,261.00
62,724.890 PERP
0.5035%
34
Koinpark
PERP-INR$0.8736
0.0002509 Eth
$53,410.00
61,139.408 PERP
0.4908%
35
MEXC
PERP-USDT$0.872
0.0002501 Eth
$43,409.00
49,781.740 PERP
0.3996%
36
KuCoin
PERP-USDT$0.8715
0.0002499 Eth
$40,291.00
46,233.711 PERP
0.3711%
37
Binance
PERP-BTC$0.8697
0.0002501 Eth
$28,381.00
32,473.810 PERP
0.2607%
38
Bitvavo
PERP-EUR$0.868
0.0002494 Eth
$27,087.00
31,206.544 PERP
0.2505%
39
Pionex
PERP-USDT$0.8704
0.0002495 Eth
$26,686.00
30,925.854 PERP
0.2483%
40
Bitkub
PERP-THB$0.8999
0.0002579 Eth
$25,128.00
27,923.595 PERP
0.2242%
41
Velodrome Finance V2 (Optimism)
0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X9E1028F5F1D5EDE59748FFCEE5532509976840E0$0.8657
0.0002483 Eth
$13,417.02
13,317.894 0X0B2C639C533813F4AA9D7837CAF62653D097FF85
0.1069%
42
Matcha (Ethereum)
0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XBC396689893D065F41BC2C6ECBEE5E0085233447$0.7816
0.0002258 Eth
$9,717.93
10,000.000 0X6B175474E89094C44DA98B954EEDEAC495271D0F
0.0803%
43
CoinEx
PERP-USDT$0.87
0.0002493 Eth
$8,925.87
10,383.911 PERP
0.0834%
44
LATOKEN
PERP-USDT$0.8725
0.0002501 Eth
$7,928.33
9,087.373 PERP
0.0729%
45
WEEX
PERP-USDT$0.8739
0.0002505 Eth
$5,871.74
6,790.000 PERP
0.0545%
46
OKX
PERP-USDC$0.886
0.0002541 Eth
$4,360.36
4,925.370 PERP
0.0395%
47
Tothemoon
PERP-USDT$0.8707
0.0002496 Eth
$4,191.90
4,814.140 PERP
0.0386%
48
Bitstamp
PERP-EUR$0.8669
0.0002487 Eth
$2,355.78
2,717.578 PERP
0.0218%
49
TokoCrypto
PERP-USDT$0.872
0.0002499 Eth
$1,670.93
1,916.312 PERP
0.0154%
50
Nami.Exchange
PERP-VNST$0.8748
0.0002508 Eth
$1,222.22
1,397.216 PERP
0.0112%
51
Nami.Exchange
PERP-USDT$0.8708
0.0002498 Eth
$1,214.55
1,394.772 PERP
0.0112%
52
Bitstamp
PERP-USD$0.865
0.0002481 Eth
$949.40
1,097.577 PERP
0.0088%
53
Bittime
PERP-IDR$0.8763
0.0002516 Eth
$755.40
870.800 PERP
0.0070%
54
Crypto.com Exchange
PERP-USD$0.872
0.0002501 Eth
$619.18
710.100 PERP
0.0057%
55
KuCoin
PERP-BTC$0.8547
0.0002450 Eth
$603.26
705.836 PERP
0.0057%
56
Indodax
PERP-IDR$0.9004
0.0002580 Eth
$545.65
606.036 PERP
0.0049%
57
Mudrex
PERP-USDT$0.873
0.0002502 Eth
$490.38
561.730 PERP
0.0045%
58
Velodrome Finance
0X9E1028F5F1D5EDE59748FFCEE5532509976840E0-0X7F5C764CBC14F9669B88837CA1490CCA17C31607$0.8655
0.0002480 Eth
$453.61
526.156 0X9E1028F5F1D5EDE59748FFCEE5532509976840E0
0.0042%
59
Uniswap V2 (Ethereum)
0XBC396689893D065F41BC2C6ECBEE5E0085233447-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$0.8541
0.0002449 Eth
$97.87
114.584 0XBC396689893D065F41BC2C6ECBEE5E0085233447
0.0009%
60
Mercado Bitcoin
PERP-BRL$0.8763
0.0002514 Eth
$84.01
95.865 PERP
0.0008%
61
Sushiswap
0XBC396689893D065F41BC2C6ECBEE5E0085233447-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$0.8597
0.0002433 Eth
$46.67
54.282 0XBC396689893D065F41BC2C6ECBEE5E0085233447
0.0004%
62
Velodrome Finance V2 (Optimism)
0X9E1028F5F1D5EDE59748FFCEE5532509976840E0-0X7F5C764CBC14F9669B88837CA1490CCA17C31607$0.8642
0.0002484 Eth
$45.02
52.216 0X9E1028F5F1D5EDE59748FFCEE5532509976840E0
0.0004%
63
Uniswap V3 (Optimism)
0X9E1028F5F1D5EDE59748FFCEE5532509976840E0-0X4200000000000000000000000000000000000006$0.8656
0.0002481 Eth
$43.35
49.646 0X9E1028F5F1D5EDE59748FFCEE5532509976840E0
0.0004%
64
Gate.io
PERP-TRY$0.7918
0.0002337 Eth
$38.10
48.122 PERP
0.0004%
65
Poloniex
PERP-USDT$0.677
0.0001940 Eth
$22.81
27.256 PERP
0.0002%
66
Gate.io
PERP-ETH$0.7963
0.0002300 Eth
$17.84
22.400 PERP
0.0002%
67
Coinmetro
PERP-USDT$0.8661
0.0002487 Eth
$9.40
10.850 PERP
0.0001%
68
Korbit
PERP-KRW$0.8024
0.0002297 Eth
$5.57
6.940 PERP
0.0001%
69
Beethoven X (Optimism)
0X8700DAEC35AF8FF88C16BDF0418774CB3D7599B4-0X9E1028F5F1D5EDE59748FFCEE5532509976840E0$0.861
0.0002468 Eth
$1.96
0.884 0X8700DAEC35AF8FF88C16BDF0418774CB3D7599B4
0.0000%
70
Beethoven X (Optimism)
0X50C5725949A6F0C72E6C4A641F24049A917DB0CB-0X9E1028F5F1D5EDE59748FFCEE5532509976840E0$0.8782
0.0002517 Eth
$1.76
999.916 0X50C5725949A6F0C72E6C4A641F24049A917DB0CB
0.0080%
71
Beethoven X (Optimism)
0X7F5C764CBC14F9669B88837CA1490CCA17C31607-0X9E1028F5F1D5EDE59748FFCEE5532509976840E0$0.8595
0.0002463 Eth
$1.68
1.679 0X7F5C764CBC14F9669B88837CA1490CCA17C31607
0.0000%
72
Beethoven X (Optimism)
0X4200000000000000000000000000000000000042-0X9E1028F5F1D5EDE59748FFCEE5532509976840E0$0.8601
0.0002466 Eth
$1.67
0.860 0X4200000000000000000000000000000000000042
0.0000%
73
PancakeSwap V3 (BSC)
0X4E7F408BE2D4E9D60F49A64B89BB619C84C7C6F5-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$0.859
0.0002465 Eth
$1.65
1.917 0X4E7F408BE2D4E9D60F49A64B89BB619C84C7C6F5
0.0000%
74
Matcha (Optimism)
0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X9E1028F5F1D5EDE59748FFCEE5532509976840E0$0.7959
0.0002388 Eth
$1.15
1.152 0X0B2C639C533813F4AA9D7837CAF62653D097FF85
0.0000%
75
Beethoven X (Optimism)
0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9-0X9E1028F5F1D5EDE59748FFCEE5532509976840E0$0.8595
0.0002463 Eth
$0.6951
0.703 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9
0.0000%
76
Beethoven X (Optimism)
0X9E1028F5F1D5EDE59748FFCEE5532509976840E0-0XFE8B128BA8C78AABC59D4C64CEE7FF28E9379921$0.8595
0.0002463 Eth
$0.1182
0.138 0X9E1028F5F1D5EDE59748FFCEE5532509976840E0
0.0000%

Contract Source Code Verified (Exact Match)

Contract Name:
PerpToken

Compiler Version
v0.6.7+commit.b8d736ae

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2020-09-05
*/

// SPDX-License-Identifier: BSD-3-Clause

pragma solidity 0.6.7;


// 
/*
 * @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;
    }
}

// 
/**
 * @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);
}

// 
/**
 * @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;
    }
}

// 
/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

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

// 
/**
 * @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) public {
        _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 { }
}

// copy from openzeppelin Ownable, only modify how the owner transfer
/**
 * @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 PerpFiOwnable is Context {
    address private _owner;
    address private _candidate;

    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;
    }

    function candidate() public view returns (address) {
        return _candidate;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "PerpFiOwnable: 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Set ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function setOwner(address newOwner) public onlyOwner {
        require(newOwner != address(0), "PerpFiOwnable: zero address");
        require(newOwner != _owner, "PerpFiOwnable: same as original");
        require(newOwner != _candidate, "PerpFiOwnable: same as candidate");
        _candidate = newOwner;
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`_candidate`).
     * Can only be called by the new owner.
     */
    function updateOwner() public {
        require(_candidate != address(0), "PerpFiOwnable: candidate is zero address");
        require(_candidate == _msgSender(), "PerpFiOwnable: not the new owner");

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

contract PerpToken is ERC20, PerpFiOwnable {
    mapping(address => bool) public minters;

    constructor(uint256 _initialSupply) public ERC20("Perpetual", "PERP") {
        _mint(msg.sender, _initialSupply);
    }

    function mint(address account, uint256 amount) external {
        require(minters[msg.sender], "!minter");
        _mint(account, amount);
    }

    function addMinter(address _minter) external onlyOwner {
        minters[_minter] = true;
    }

    function removeMinter(address _minter) external onlyOwner {
        minters[_minter] = false;
    }
}

Contract Security Audit

Contract ABI

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

0000000000000000000000000000000000000000007c13bc4b2c133c56000000

-----Decoded View---------------
Arg [0] : _initialSupply (uint256): 150000000000000000000000000

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000007c13bc4b2c133c56000000


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