Feature Tip: Add private address tag to any address under My Name Tag !
Overview
Max Total Supply
76,926,220,145.483487 USDT
Holders
6,554,321 ( -0.023%)
Market
Price
$1.00 @ 0.000294 ETH (-0.29%)
Onchain Market Cap
$76,710,595,950.42
Circulating Supply Market Cap
$139,466,854,541.00
Other Info
Token Contract (WITH 6 Decimals)
Balance
0.596893 USDTValue
$0.60 ( ~0.000176655851616208 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | OrangeX | BTC-USDT | $0.9986 0.0002945 Eth | $3,108,632,337.00 33,019.750 BTC | 0.0002% |
2 | Binance | BTC-USDT | $0.9985 0.0002950 Eth | $2,653,327,898.00 28,189.893 BTC | 0.0002% |
3 | Bybit | BTC-USDT | $0.9985 0.0002949 Eth | $2,398,742,109.00 25,449.944 BTC | 0.0002% |
4 | Pionex | BTC-USDT | $0.9986 0.0002948 Eth | $2,086,357,491.00 22,161.082 BTC | 0.0002% |
5 | WhiteBIT | BTC-USDT | $0.9986 0.0002945 Eth | $1,614,513,086.00 17,204.680 BTC | 0.0001% |
6 | Ourbit | BTC-USDT | $0.9986 0.0002948 Eth | $1,578,087,407.00 16,763.347 BTC | 0.0001% |
7 | Binance | ETH-USDT | $0.9986 0.0002946 Eth | $1,441,196,901.00 429,646.440 ETH | 0.0030% |
8 | OrangeX | ETH-USDT | $0.9986 0.0002948 Eth | $1,362,837,503.00 405,983.550 ETH | 0.0028% |
9 | Binance | FDUSD-USDT | $0.998 0.0002940 Eth | $1,300,017,058.00 1,299,564,404.000 FDUSD | 9.0739% |
10 | MEXC | ETH-USDT | $0.9985 0.0002949 Eth | $1,118,747,391.00 330,609.836 ETH | 0.0023% |
11 | Pionex | ETH-USDT | $0.9986 0.0002948 Eth | $1,013,147,741.00 301,866.520 ETH | 0.0021% |
12 | Tapbit | ETH-USDT | $0.9986 0.0002948 Eth | $1,004,384,252.00 299,085.050 ETH | 0.0021% |
13 | FameEX | ETH-USDT | $0.9985 0.0002949 Eth | $960,885,968.00 286,444.560 ETH | 0.0020% |
14 | AscendEX (BitMax) | BTC-USDT | $0.9985 0.0002949 Eth | $930,308,826.00 9,924.043 BTC | 0.0001% |
15 | Bybit | ETH-USDT | $0.9985 0.0002949 Eth | $857,512,369.00 255,617.641 ETH | 0.0018% |
16 | Bitget | BTC-USDT | $0.9985 0.0002950 Eth | $819,274,764.00 8,704.894 BTC | 0.0001% |
17 | OKX | BTC-USDT | $0.9985 0.0002950 Eth | $794,127,097.00 8,439.467 BTC | 0.0001% |
18 | Bitget | ETH-USDT | $0.9985 0.0002950 Eth | $781,860,215.00 232,930.490 ETH | 0.0016% |
19 | CoinW | BTC-USDT | $0.9986 0.0002948 Eth | $749,443,068.00 7,994.466 BTC | 0.0001% |
20 | DigiFinex | BTC-USDT | $0.9985 0.0002950 Eth | $653,701,638.00 6,970.646 BTC | 0.0000% |
21 | OKX | ETH-USDT | $0.9986 0.0002949 Eth | $630,303,080.00 187,757.817 ETH | 0.0013% |
22 | P2B | BTC-USDT | $0.9985 0.0002950 Eth | $614,203,403.00 6,552.553 BTC | 0.0000% |
23 | Ourbit | ETH-USDT | $0.9985 0.0002949 Eth | $569,314,182.00 169,686.655 ETH | 0.0012% |
24 | Hotcoin | BTC-USDT | $0.9986 0.0002948 Eth | $556,369,072.00 5,934.664 BTC | 0.0000% |
25 | Binance | DOGE-USDT | $0.9986 0.0002944 Eth | $533,955,282.00 1,689,887,174.000 DOGE | 11.7993% |
26 | HTX | BTC-USDT | $0.9985 0.0002950 Eth | $533,189,161.00 5,661.776 BTC | 0.0000% |
27 | BitMart | ETH-USDT | $0.9986 0.0002948 Eth | $530,046,407.00 156,642.120 ETH | 0.0011% |
28 | Binance | USUAL-USDT | $0.9985 0.0002950 Eth | $523,330,643.00 423,484,940.900 USUAL | 2.9569% |
29 | AscendEX (BitMax) | ETH-USDT | $0.9985 0.0002949 Eth | $516,292,534.00 152,399.646 ETH | 0.0011% |
30 | LBank | BTC-USDT | $0.9986 0.0002949 Eth | $496,845,688.00 5,298.966 BTC | 0.0000% |
31 | Bitunix | BTC-USDT | $0.9985 0.0002949 Eth | $489,170,566.00 5,219.786 BTC | 0.0000% |
32 | Deepcoin | ETH-USDT | $0.9985 0.0002949 Eth | $407,343,010.00 124,730.603 ETH | 0.0009% |
33 | XT.COM | BTC-USDT | $0.9987 0.0002945 Eth | $393,886,818.00 4,183.171 BTC | 0.0000% |
34 | Binance | BNB-USDT | $0.9985 0.0002950 Eth | $383,027,061.00 562,376.248 BNB | 0.0039% |
35 | Gate.io | BTC-USDT | $0.9985 0.0002950 Eth | $380,361,517.00 4,044.238 BTC | 0.0000% |
36 | OKX | DOGE-USDT | $0.9986 0.0002949 Eth | $309,478,204.00 980,398,401.432 DOGE | 6.8454% |
37 | Gate.io | ETH-USDT | $0.9985 0.0002950 Eth | $295,368,547.00 88,132.322 ETH | 0.0006% |
38 | BTSE | BTC-USDT | $0.9985 0.0002949 Eth | $292,122,832.00 3,117.090 BTC | 0.0000% |
39 | WEEX | BTC-USDT | $0.9985 0.0002949 Eth | $283,137,891.00 3,010.735 BTC | 0.0000% |
40 | LATOKEN | BTC-USDT | $0.9986 0.0002950 Eth | $281,954,967.00 3,007.883 BTC | 0.0000% |
41 | CoinW | ETH-USDT | $0.9986 0.0002948 Eth | $274,703,390.00 81,179.271 ETH | 0.0006% |
42 | Bybit | USDC-USDT | $0.9985 0.0002949 Eth | $260,185,228.00 260,245,018.090 USDC | 1.8171% |
43 | KuCoin | ETH-USDT | $0.9985 0.0002950 Eth | $257,251,920.00 75,945.480 ETH | 0.0005% |
44 | Biconomy.com | BTC-USDT | $0.9985 0.0002950 Eth | $254,829,387.00 2,705.221 BTC | 0.0000% |
45 | Bybit | XRP-USDT | $0.9985 0.0002949 Eth | $241,550,370.00 109,572,676.870 XRP | 0.7651% |
46 | DigiFinex | ETH-USDT | $0.9985 0.0002950 Eth | $237,950,709.00 70,176.043 ETH | 0.0005% |
47 | Binance | HBAR-USDT | $0.9981 0.0002937 Eth | $230,662,326.00 823,502,954.000 HBAR | 5.7499% |
48 | KuCoin | BTC-USDT | $0.9985 0.0002950 Eth | $214,436,240.00 2,287.590 BTC | 0.0000% |
49 | Bybit | SOL-USDT | $0.9985 0.0002949 Eth | $208,997,455.00 1,121,378.047 SOL | 0.0078% |
50 | Bitget | XRP-USDT | $0.9985 0.0002950 Eth | $202,084,131.00 91,776,729.433 XRP | 0.6408% |
51 | Binance | LINK-USDT | $0.998 0.0002940 Eth | $202,034,331.00 8,607,568.680 LINK | 0.0601% |
52 | LBank | ETH-USDT | $0.9986 0.0002949 Eth | $201,880,677.00 59,582.304 ETH | 0.0004% |
53 | LATOKEN | ETH-USDT | $0.9986 0.0002948 Eth | $201,724,351.00 59,598.577 ETH | 0.0004% |
54 | Coinstore | ETH-USDT | $0.9987 0.0002949 Eth | $199,039,803.00 59,312.809 ETH | 0.0004% |
55 | Bitget | BGB-USDT | $0.9985 0.0002950 Eth | $198,956,068.00 46,995,316.367 BGB | 0.3281% |
56 | Binance | ADA-USDT | $0.9981 0.0002937 Eth | $193,158,740.00 214,736,234.600 ADA | 1.4994% |
57 | Binance | ENA-USDT | $0.9985 0.0002950 Eth | $179,141,841.00 171,266,920.930 ENA | 1.1958% |
58 | MEXC | DOGE-USDT | $0.9985 0.0002943 Eth | $173,138,554.00 542,548,351.270 DOGE | 3.7882% |
59 | WhiteBIT | XRP-USDT | $0.9985 0.0002949 Eth | $173,124,180.00 77,580,682.200 XRP | 0.5417% |
60 | Hotcoin | ETH-USDT | $0.998 0.0002949 Eth | $161,644,460.00 47,815.352 ETH | 0.0003% |
61 | Coinstore | BTC-USDT | $0.9986 0.0002949 Eth | $157,120,519.00 1,666.404 BTC | 0.0000% |
62 | Biconomy.com | ETH-USDT | $0.9986 0.0002948 Eth | $153,742,248.00 45,808.225 ETH | 0.0003% |
63 | OKX | SOL-USDT | $0.9986 0.0002949 Eth | $151,233,874.00 811,357.437 SOL | 0.0057% |
64 | Bitget | DOGE-USDT | $0.9985 0.0002950 Eth | $140,864,650.00 446,279,849.149 DOGE | 3.1161% |
65 | BTSE | ETH-USDT | $0.9986 0.0002948 Eth | $136,870,044.00 40,446.531 ETH | 0.0003% |
66 | Binance | PNUT-USDT | $0.9985 0.0002950 Eth | $133,639,594.00 185,895,358.500 PNUT | 1.2980% |
67 | WEEX | ETH-USDT | $0.9985 0.0002949 Eth | $129,438,710.00 38,637.926 ETH | 0.0003% |
68 | HTX | ETH-USDT | $0.9985 0.0002950 Eth | $129,103,897.00 38,567.788 ETH | 0.0003% |
69 | Bybit | MNT-USDT | $0.9986 0.0002949 Eth | $127,630,910.00 107,465,136.680 MNT | 0.7504% |
70 | Binance | PENGU-USDT | $0.9985 0.0002950 Eth | $126,670,862.00 4,385,444,730.000 PENGU | 30.6205% |
71 | Bitget | SUI-USDT | $0.9985 0.0002950 Eth | $122,365,026.00 27,529,558.500 SUI | 0.1922% |
72 | HTX | DOGE-USDT | $0.9985 0.0002950 Eth | $120,473,377.00 380,270,232.911 DOGE | 2.6552% |
73 | OKX | XRP-USDT | $0.9986 0.0002949 Eth | $109,297,118.00 49,615,947.593 XRP | 0.3464% |
74 | Gate.io | XRP-USDT | $0.9985 0.0002950 Eth | $109,005,464.00 49,501,345.622 XRP | 0.3456% |
75 | Deepcoin | SOL-USDT | $0.9985 0.0002950 Eth | $108,709,428.00 620,107.023 SOL | 0.0043% |
76 | OKX | SUI-USDT | $0.9986 0.0002949 Eth | $104,738,626.00 23,533,424.061 SUI | 0.1643% |
77 | Bitget | SOL-USDT | $0.9985 0.0002950 Eth | $104,209,470.00 558,677.966 SOL | 0.0039% |
78 | LBank | DOGE-USDT | $0.9985 0.0002949 Eth | $103,246,400.00 323,780,455.000 DOGE | 2.2607% |
79 | DigiFinex | DOGE-USDT | $0.9985 0.0002950 Eth | $101,528,096.00 318,067,339.300 DOGE | 2.2208% |
80 | WhiteBIT | ZEN-USDT | $0.9985 0.0002950 Eth | $100,189,087.00 2,683,512.401 ZEN | 0.0187% |
81 | Gate.io | DOGE-USDT | $0.9985 0.0002950 Eth | $100,103,690.00 317,400,808.700 DOGE | 2.2162% |
82 | Binance | FTM-USDT | $0.9983 0.0002948 Eth | $93,368,613.00 93,537,014.000 FTM | 0.6531% |
83 | OrangeX | DOGE-USDT | $0.9985 0.0002944 Eth | $91,276,218.00 289,423,453.000 DOGE | 2.0208% |
84 | Binance | UNI-USDT | $0.9985 0.0002950 Eth | $90,229,741.00 6,502,358.120 UNI | 0.0454% |
85 | Binance | LTC-USDT | $0.9985 0.0002950 Eth | $88,711,609.00 856,838.766 LTC | 0.0060% |
86 | KuCoin | XRP-USDT | $0.9985 0.0002950 Eth | $87,426,626.00 39,185,311.124 XRP | 0.2736% |
87 | Binance | NEAR-USDT | $0.9985 0.0002950 Eth | $85,178,477.00 16,059,662.600 NEAR | 0.1121% |
88 | Azbit | FDUSD-USDT | $0.9986 0.0002948 Eth | $84,387,785.00 84,330,548.940 FDUSD | 0.5888% |
89 | Azbit | BTC-USDT | $0.9986 0.0002949 Eth | $79,652,337.00 846.076 BTC | 0.0000% |
90 | DigiFinex | TRX-USDT | $0.9985 0.0002950 Eth | $77,655,683.00 309,670,772.400 TRX | 2.1622% |
91 | KuCoin | SOL-USDT | $0.9985 0.0002950 Eth | $77,386,103.00 408,279.642 SOL | 0.0029% |
92 | WhiteBIT | LINK-USDT | $0.9985 0.0002949 Eth | $76,161,729.00 3,197,703.820 LINK | 0.0223% |
93 | BingX | BTC-USDT | $0.9985 0.0002950 Eth | $71,164,821.00 754.034 BTC | 0.0000% |
94 | Slex | BTC-USDT | $0.9986 0.0002945 Eth | $69,778,724.00 741.232 BTC | 0.0000% |
95 | Binance | ARB-USDT | $0.9981 0.0002945 Eth | $69,471,736.00 89,552,382.800 ARB | 0.6253% |
96 | Binance | DOT-USDT | $0.9985 0.0002950 Eth | $66,766,624.00 9,337,953.450 DOT | 0.0652% |
97 | DigiFinex | SUI-USDT | $0.9985 0.0002950 Eth | $65,144,450.00 14,126,011.400 SUI | 0.0986% |
98 | BingX | ETH-USDT | $0.9985 0.0002950 Eth | $60,230,575.00 17,930.155 ETH | 0.0001% |
99 | Bitget | AAVE-USDT | $0.9985 0.0002950 Eth | $49,742,104.00 140,448.101 AAVE | 0.0010% |
100 | PointPay | BTC-USDT | $0.9986 0.0002948 Eth | $43,453,476.00 461.712 BTC | 0.0000% |
Contract Name:
TetherToken
Compiler Version
v0.4.18+commit.9cf6e910
Optimization Enabled:
No with 0 runs
Other Settings:
default evmVersion, Audited
Contract Source Code (Solidity)Audit Report
/** *Submitted for verification at Etherscan.io on 2017-11-28 */ pragma solidity ^0.4.17; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ function Ownable() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { if (newOwner != address(0)) { owner = newOwner; } } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20Basic { uint public _totalSupply; function totalSupply() public constant returns (uint); function balanceOf(address who) public constant returns (uint); function transfer(address to, uint value) public; event Transfer(address indexed from, address indexed to, uint value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public constant returns (uint); function transferFrom(address from, address to, uint value) public; function approve(address spender, uint value) public; event Approval(address indexed owner, address indexed spender, uint value); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is Ownable, ERC20Basic { using SafeMath for uint; mapping(address => uint) public balances; // additional variables for use if transaction fees ever became necessary uint public basisPointsRate = 0; uint public maximumFee = 0; /** * @dev Fix for the ERC20 short address attack. */ modifier onlyPayloadSize(uint size) { require(!(msg.data.length < size + 4)); _; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint _value) public onlyPayloadSize(2 * 32) { uint fee = (_value.mul(basisPointsRate)).div(10000); if (fee > maximumFee) { fee = maximumFee; } uint sendAmount = _value.sub(fee); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(sendAmount); if (fee > 0) { balances[owner] = balances[owner].add(fee); Transfer(msg.sender, owner, fee); } Transfer(msg.sender, _to, sendAmount); } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint representing the amount owned by the passed address. */ function balanceOf(address _owner) public constant returns (uint balance) { return balances[_owner]; } } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based oncode by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is BasicToken, ERC20 { mapping (address => mapping (address => uint)) public allowed; uint public constant MAX_UINT = 2**256 - 1; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint _value) public onlyPayloadSize(3 * 32) { var _allowance = allowed[_from][msg.sender]; // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met // if (_value > _allowance) throw; uint fee = (_value.mul(basisPointsRate)).div(10000); if (fee > maximumFee) { fee = maximumFee; } if (_allowance < MAX_UINT) { allowed[_from][msg.sender] = _allowance.sub(_value); } uint sendAmount = _value.sub(fee); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(sendAmount); if (fee > 0) { balances[owner] = balances[owner].add(fee); Transfer(_from, owner, fee); } Transfer(_from, _to, sendAmount); } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint _value) public onlyPayloadSize(2 * 32) { // To change the approve amount you first have to reduce the addresses` // allowance to zero by calling `approve(_spender, 0)` if it is not // already 0 to mitigate the race condition described here: // https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 require(!((_value != 0) && (allowed[msg.sender][_spender] != 0))); allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); } /** * @dev Function to check the amount of tokens than an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public constant returns (uint remaining) { return allowed[_owner][_spender]; } } /** * @title Pausable * @dev Base contract which allows children to implement an emergency stop mechanism. */ contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!paused); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(paused); _; } /** * @dev called by the owner to pause, triggers stopped state */ function pause() onlyOwner whenNotPaused public { paused = true; Pause(); } /** * @dev called by the owner to unpause, returns to normal state */ function unpause() onlyOwner whenPaused public { paused = false; Unpause(); } } contract BlackList is Ownable, BasicToken { /////// Getters to allow the same blacklist to be used also by other contracts (including upgraded Tether) /////// function getBlackListStatus(address _maker) external constant returns (bool) { return isBlackListed[_maker]; } function getOwner() external constant returns (address) { return owner; } mapping (address => bool) public isBlackListed; function addBlackList (address _evilUser) public onlyOwner { isBlackListed[_evilUser] = true; AddedBlackList(_evilUser); } function removeBlackList (address _clearedUser) public onlyOwner { isBlackListed[_clearedUser] = false; RemovedBlackList(_clearedUser); } function destroyBlackFunds (address _blackListedUser) public onlyOwner { require(isBlackListed[_blackListedUser]); uint dirtyFunds = balanceOf(_blackListedUser); balances[_blackListedUser] = 0; _totalSupply -= dirtyFunds; DestroyedBlackFunds(_blackListedUser, dirtyFunds); } event DestroyedBlackFunds(address _blackListedUser, uint _balance); event AddedBlackList(address _user); event RemovedBlackList(address _user); } contract UpgradedStandardToken is StandardToken{ // those methods are called by the legacy contract // and they must ensure msg.sender to be the contract address function transferByLegacy(address from, address to, uint value) public; function transferFromByLegacy(address sender, address from, address spender, uint value) public; function approveByLegacy(address from, address spender, uint value) public; } contract TetherToken is Pausable, StandardToken, BlackList { string public name; string public symbol; uint public decimals; address public upgradedAddress; bool public deprecated; // The contract can be initialized with a number of tokens // All the tokens are deposited to the owner address // // @param _balance Initial supply of the contract // @param _name Token Name // @param _symbol Token symbol // @param _decimals Token decimals function TetherToken(uint _initialSupply, string _name, string _symbol, uint _decimals) public { _totalSupply = _initialSupply; name = _name; symbol = _symbol; decimals = _decimals; balances[owner] = _initialSupply; deprecated = false; } // Forward ERC20 methods to upgraded contract if this one is deprecated function transfer(address _to, uint _value) public whenNotPaused { require(!isBlackListed[msg.sender]); if (deprecated) { return UpgradedStandardToken(upgradedAddress).transferByLegacy(msg.sender, _to, _value); } else { return super.transfer(_to, _value); } } // Forward ERC20 methods to upgraded contract if this one is deprecated function transferFrom(address _from, address _to, uint _value) public whenNotPaused { require(!isBlackListed[_from]); if (deprecated) { return UpgradedStandardToken(upgradedAddress).transferFromByLegacy(msg.sender, _from, _to, _value); } else { return super.transferFrom(_from, _to, _value); } } // Forward ERC20 methods to upgraded contract if this one is deprecated function balanceOf(address who) public constant returns (uint) { if (deprecated) { return UpgradedStandardToken(upgradedAddress).balanceOf(who); } else { return super.balanceOf(who); } } // Forward ERC20 methods to upgraded contract if this one is deprecated function approve(address _spender, uint _value) public onlyPayloadSize(2 * 32) { if (deprecated) { return UpgradedStandardToken(upgradedAddress).approveByLegacy(msg.sender, _spender, _value); } else { return super.approve(_spender, _value); } } // Forward ERC20 methods to upgraded contract if this one is deprecated function allowance(address _owner, address _spender) public constant returns (uint remaining) { if (deprecated) { return StandardToken(upgradedAddress).allowance(_owner, _spender); } else { return super.allowance(_owner, _spender); } } // deprecate current contract in favour of a new one function deprecate(address _upgradedAddress) public onlyOwner { deprecated = true; upgradedAddress = _upgradedAddress; Deprecate(_upgradedAddress); } // deprecate current contract if favour of a new one function totalSupply() public constant returns (uint) { if (deprecated) { return StandardToken(upgradedAddress).totalSupply(); } else { return _totalSupply; } } // Issue a new amount of tokens // these tokens are deposited into the owner address // // @param _amount Number of tokens to be issued function issue(uint amount) public onlyOwner { require(_totalSupply + amount > _totalSupply); require(balances[owner] + amount > balances[owner]); balances[owner] += amount; _totalSupply += amount; Issue(amount); } // Redeem tokens. // These tokens are withdrawn from the owner address // if the balance must be enough to cover the redeem // or the call will fail. // @param _amount Number of tokens to be issued function redeem(uint amount) public onlyOwner { require(_totalSupply >= amount); require(balances[owner] >= amount); _totalSupply -= amount; balances[owner] -= amount; Redeem(amount); } function setParams(uint newBasisPoints, uint newMaxFee) public onlyOwner { // Ensure transparency by hardcoding limit beyond which fees can never be added require(newBasisPoints < 20); require(newMaxFee < 50); basisPointsRate = newBasisPoints; maximumFee = newMaxFee.mul(10**decimals); Params(basisPointsRate, maximumFee); } // Called when new token are issued event Issue(uint amount); // Called when tokens are redeemed event Redeem(uint amount); // Called when contract is deprecated event Deprecate(address newAddress); // Called if contract ever adds fees event Params(uint feeBasisPoints, uint maxFee); }
Contract Security Audit
- Callisto Network - July 10th, 2019 - Security Audit Report
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onstant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_blackListedUser","type":"address"}],"name":"destroyBlackFunds","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_initialSupply","type":"uint256"},{"name":"_name","type":"string"},{"name":"_symbol","type":"string"},{"name":"_decimals","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"amount","type":"uint256"}],"name":"Issue","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"amount","type":"uint256"}],"name":"Redeem","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"newAddress","type":"address"}],"name":"Deprecate","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"feeBasisPoints","type":"uint256"},{"indexed":false,"name":"maxFee","type":"uint256"}],"name":"Params","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_blackListedUser","type":"address"},{"indexed":false,"name":"_balance","type":"uint256"}],"name":"DestroyedBlackFunds","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_user","type":"address"}],"name":"AddedBlackList","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_user","type":"address"}],"name":"RemovedBlackList","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[],"name":"Pause","type":"event"},{"anonymous":false,"inputs":[],"name":"Unpause","type":"event"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000174876e800000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c00000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a546574686572205553440000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000045553445400000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _initialSupply (uint256): 100000000000
Arg [1] : _name (string): Tether USD
Arg [2] : _symbol (string): USDT
Arg [3] : _decimals (uint256): 6
-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 000000000000000000000000000000000000000000000000000000174876e800
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [4] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [5] : 5465746865722055534400000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [7] : 5553445400000000000000000000000000000000000000000000000000000000
Swarm Source
bzzr://645ee12d73db47fd78ba77fa1f824c3c8f9184061b3b10386beb4dc9236abb28
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