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Overview
Max Total Supply
76,926,220,145.483487 USDT
Holders
6,531,683 ( -0.087%)
Market
Price
$1.00 @ 0.000296 ETH (-0.05%)
Onchain Market Cap
$76,760,982,624.61
Circulating Supply Market Cap
$138,794,106,125.00
Other Info
Token Contract (WITH 6 Decimals)
Balance
8,081.907497 USDTValue
$8,064.55 ( ~2.3886 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Bybit | BTC-USDT | $0.9984 0.0002956 Eth | $1,242,054,992.00 13,094.325 BTC | 0.0000% |
2 | OrangeX | BTC-USDT | $0.9975 0.0002952 Eth | $887,590,691.00 9,366.843 BTC | 0.0000% |
3 | Binance | BTC-USDT | $0.9985 0.0002957 Eth | $748,107,916.00 7,887.277 BTC | 0.0000% |
4 | BVOX | BTC-USDT | $0.9975 0.0002952 Eth | $622,130,556.00 6,565.309 BTC | 0.0000% |
5 | OrangeX | ETH-USDT | $0.9975 0.0002952 Eth | $574,225,459.00 169,654.343 ETH | 0.0000% |
6 | WhiteBIT | BTC-USDT | $0.9982 0.0002937 Eth | $571,678,073.00 6,027.222 BTC | 0.0000% |
7 | Binance | ETH-USDT | $0.9983 0.0002952 Eth | $510,916,616.00 150,819.418 ETH | 0.0000% |
8 | Toobit | BTC-USDT | $0.9984 0.0002952 Eth | $456,355,063.00 4,810.807 BTC | 0.0000% |
9 | Tapbit | ETH-USDT | $0.9984 0.0002952 Eth | $398,558,152.00 117,605.477 ETH | 0.0000% |
10 | FameEX | ETH-USDT | $0.999 0.0002935 Eth | $388,434,325.00 114,599.734 ETH | 0.0000% |
11 | Toobit | ETH-USDT | $0.9984 0.0002952 Eth | $347,593,449.00 102,582.647 ETH | 0.0000% |
12 | CoinW | BTC-USDT | $0.9984 0.0002957 Eth | $336,993,197.00 3,569.664 BTC | 0.0000% |
13 | Bybit | ETH-USDT | $0.9984 0.0002956 Eth | $289,849,982.00 85,553.959 ETH | 0.0000% |
14 | MEXC | ETH-USDT | $0.9984 0.0002936 Eth | $282,234,390.00 82,949.886 ETH | 0.0000% |
15 | WhiteBIT | ETH-USDT | $0.9983 0.0002936 Eth | $280,455,960.00 82,461.930 ETH | 0.0000% |
16 | Ourbit | ETH-USDT | $0.9984 0.0002952 Eth | $244,981,476.00 72,316.047 ETH | 0.0000% |
17 | OKX | BTC-USDT | $0.9985 0.0002957 Eth | $242,638,322.00 2,556.813 BTC | 0.0000% |
18 | Bitget | BTC-USDT | $0.9983 0.0002956 Eth | $240,163,922.00 2,531.552 BTC | 0.0000% |
19 | Bitget | ETH-USDT | $0.9983 0.0002956 Eth | $225,021,241.00 66,423.944 ETH | 0.0000% |
20 | Binance | BNB-USDT | $0.9984 0.0002951 Eth | $211,248,159.00 293,466.933 BNB | 0.0000% |
21 | Binance | DOGE-USDT | $0.9985 0.0002952 Eth | $208,943,967.00 645,647,132.000 DOGE | 0.0045% |
22 | CoinW | ETH-USDT | $0.9986 0.0002956 Eth | $206,881,645.00 61,300.917 ETH | 0.0000% |
23 | Hotcoin | BTC-USDT | $0.9984 0.0002946 Eth | $192,258,008.00 2,032.669 BTC | 0.0000% |
24 | DigiFinex | BTC-USDT | $0.9983 0.0002956 Eth | $190,652,643.00 2,017.619 BTC | 0.0000% |
25 | Binance | PEPE-USDT | $0.9988 0.0002946 Eth | $179,924,933.00 9,624,812,295,076.000 PEPE | 66.9722% |
26 | BitMart | BTC-USDT | $0.9984 0.0002956 Eth | $179,086,692.00 1,895.779 BTC | 0.0000% |
27 | OKX | ETH-USDT | $0.9984 0.0002956 Eth | $169,450,981.00 50,014.553 ETH | 0.0000% |
28 | HTX | BTC-USDT | $0.9984 0.0002957 Eth | $151,430,263.00 1,596.668 BTC | 0.0000% |
29 | BitMart | ETH-USDT | $0.9984 0.0002956 Eth | $146,608,375.00 43,399.231 ETH | 0.0000% |
30 | Binance | HBAR-USDT | $0.9986 0.0002951 Eth | $146,218,522.00 503,338,363.000 HBAR | 0.0035% |
31 | LBank | BTC-USDT | $0.9983 0.0002951 Eth | $143,595,565.00 1,519.594 BTC | 0.0000% |
32 | Bybit | VANA-USDT | $0.9984 0.0002956 Eth | $143,057,020.00 7,751,694.770 VANA | 0.0001% |
33 | Bitunix | BTC-USDT | $0.9984 0.0002952 Eth | $141,215,889.00 1,493.426 BTC | 0.0000% |
34 | Bybit | SOL-USDT | $0.9984 0.0002956 Eth | $140,580,838.00 724,882.194 SOL | 0.0000% |
35 | Biconomy.com | BTC-USDT | $0.9986 0.0002956 Eth | $130,778,911.00 1,378.337 BTC | 0.0000% |
36 | Binance | PHA-USDT | $0.9984 0.0002952 Eth | $126,127,410.00 274,326,804.000 PHA | 0.0019% |
37 | Gate.io | ETH-USDT | $0.9984 0.0002957 Eth | $125,561,504.00 37,053.539 ETH | 0.0000% |
38 | Coinstore | ETH-USDT | $0.9982 0.0002936 Eth | $117,704,011.00 34,752.259 ETH | 0.0000% |
39 | Bybit | USDC-USDT | $0.9984 0.0002956 Eth | $116,479,067.00 116,451,752.230 USDC | 0.0008% |
40 | OKX | DOGE-USDT | $0.9984 0.0002956 Eth | $113,328,783.00 350,212,893.573 DOGE | 0.0024% |
41 | Binance | THE-USDT | $0.9988 0.0002946 Eth | $99,139,560.00 60,568,932.500 THE | 0.0004% |
42 | Binance | XVG-USDT | $0.9984 0.0002952 Eth | $98,250,694.00 6,656,538,557.000 XVG | 0.0463% |
43 | LATOKEN | BTC-USDT | $0.9984 0.0002952 Eth | $90,469,481.00 957.730 BTC | 0.0000% |
44 | KuCoin | ETH-USDT | $0.9985 0.0002957 Eth | $86,885,257.00 25,720.783 ETH | 0.0000% |
45 | DigiFinex | ETH-USDT | $0.9983 0.0002956 Eth | $85,983,070.00 25,455.245 ETH | 0.0000% |
46 | Tapbit | BTC-USDT | $0.9983 0.0002938 Eth | $85,859,660.00 904.979 BTC | 0.0000% |
47 | WhiteBIT | PEPE-USDT | $0.9984 0.0002952 Eth | $85,716,128.00 4,655,153,416,170.000 PEPE | 32.3919% |
48 | Coinstore | BTC-USDT | $0.9984 0.0002938 Eth | $84,658,615.00 892.813 BTC | 0.0000% |
49 | Biconomy.com | ETH-USDT | $0.9984 0.0002938 Eth | $84,495,011.00 24,939.169 ETH | 0.0000% |
50 | Bybit | XRP-USDT | $0.9984 0.0002956 Eth | $79,725,690.00 36,557,848.180 XRP | 0.0003% |
51 | KuCoin | BTC-USDT | $0.9985 0.0002957 Eth | $79,016,106.00 836.057 BTC | 0.0000% |
52 | OKX | SOL-USDT | $0.9984 0.0002956 Eth | $78,406,215.00 404,449.738 SOL | 0.0000% |
53 | LBank | DOGE-USDT | $0.9983 0.0002952 Eth | $76,894,111.00 238,578,909.000 DOGE | 0.0017% |
54 | Binance | ADA-USDT | $0.9984 0.0002938 Eth | $74,066,418.00 83,238,932.700 ADA | 0.0006% |
55 | Binance | AAVE-USDT | $0.9983 0.0002952 Eth | $72,560,052.00 211,637.258 AAVE | 0.0000% |
56 | WhiteBIT | HBAR-USDT | $0.9985 0.0002956 Eth | $71,075,698.00 247,778,854.430 HBAR | 0.0017% |
57 | LATOKEN | ETH-USDT | $0.9984 0.0002952 Eth | $70,829,679.00 20,982.875 ETH | 0.0000% |
58 | WhiteBIT | DOGE-USDT | $0.9985 0.0002956 Eth | $68,002,488.00 211,314,399.200 DOGE | 0.0015% |
59 | MEXC | DOGE-USDT | $0.9975 0.0002952 Eth | $66,774,975.00 207,698,284.100 DOGE | 0.0014% |
60 | HTX | DOGE-USDT | $0.9984 0.0002957 Eth | $66,357,561.00 205,055,614.408 DOGE | 0.0014% |
61 | WhiteBIT | XRP-USDT | $0.9985 0.0002956 Eth | $65,627,014.00 30,379,265.070 XRP | 0.0002% |
62 | Bybit | PENGU-USDT | $0.9984 0.0002956 Eth | $64,996,595.00 1,837,581,133.000 PENGU | 0.0128% |
63 | Binance | CRV-USDT | $0.9985 0.0002957 Eth | $64,607,186.00 64,633,935.600 CRV | 0.0004% |
64 | Binance | ENA-USDT | $0.9985 0.0002957 Eth | $63,759,396.00 67,694,134.900 ENA | 0.0005% |
65 | BTSE | ETH-USDT | $0.9983 0.0002956 Eth | $63,653,319.00 18,844.589 ETH | 0.0000% |
66 | Bitget | DOGE-USDT | $0.9983 0.0002956 Eth | $63,237,581.00 195,410,273.326 DOGE | 0.0014% |
67 | Binance | FTM-USDT | $0.9988 0.0002946 Eth | $60,491,978.00 75,975,014.000 FTM | 0.0005% |
68 | Hotcoin | ETH-USDT | $0.9984 0.0002952 Eth | $56,139,114.00 16,625.274 ETH | 0.0000% |
69 | Binance | MOVE-USDT | $0.9984 0.0002952 Eth | $55,801,200.00 55,653,336.700 MOVE | 0.0004% |
70 | HTX | ETH-USDT | $0.9984 0.0002957 Eth | $49,734,361.00 14,689.434 ETH | 0.0000% |
71 | BingX | BTC-USDT | $0.9984 0.0002956 Eth | $49,527,322.00 522.019 BTC | 0.0000% |
72 | DigiFinex | TRX-USDT | $0.9983 0.0002956 Eth | $49,197,580.00 189,003,576.500 TRX | 0.0013% |
73 | BigONE | ETH-USDT | $0.9985 0.0002956 Eth | $48,718,485.00 14,422.719 ETH | 0.0000% |
74 | Bybit | DOGE-USDT | $0.9984 0.0002956 Eth | $46,166,290.00 142,649,624.800 DOGE | 0.0010% |
75 | Binance | RSR-USDT | $0.9983 0.0002952 Eth | $43,898,175.00 2,930,990,830.500 RSR | 0.0204% |
76 | WhiteBIT | CRV-USDT | $0.997 0.0002933 Eth | $43,665,068.00 44,164,724.441 CRV | 0.0003% |
77 | Bybit | MNT-USDT | $0.9984 0.0002956 Eth | $43,517,059.00 35,984,118.780 MNT | 0.0003% |
78 | KuCoin | XRP-USDT | $0.9985 0.0002957 Eth | $43,120,323.00 19,930,418.598 XRP | 0.0001% |
79 | Bitget | NEIROCTO-USDT | $0.9984 0.0002956 Eth | $40,243,492.00 41,929,372,091.040 NEIROCTO | 0.2918% |
80 | Hibt | BTC-USDT | $0.9984 0.0002957 Eth | $38,696,308.00 408.038 BTC | 0.0000% |
81 | DigiFinex | DOGE-USDT | $0.9983 0.0002956 Eth | $36,912,135.00 114,532,222.770 DOGE | 0.0008% |
82 | KuCoin | SOL-USDT | $0.9985 0.0002957 Eth | $35,625,180.00 183,376.748 SOL | 0.0000% |
83 | Binance | PNUT-USDT | $0.9985 0.0002957 Eth | $35,310,299.00 56,195,429.200 PNUT | 0.0004% |
84 | Bybit | SUI-USDT | $0.9984 0.0002956 Eth | $32,799,872.00 7,862,591.030 SUI | 0.0001% |
85 | Gate.io | ONDO-USDT | $0.9983 0.0002956 Eth | $32,720,686.00 22,145,212.960 ONDO | 0.0002% |
86 | Binance | NEIRO-USDT | $0.9974 0.0002953 Eth | $31,703,528.00 33,126,833,911.000 NEIRO | 0.2305% |
87 | BYDFi | BTC-USDT | $0.9984 0.0002952 Eth | $31,535,468.00 334.018 BTC | 0.0000% |
88 | WhiteBIT | ADA-USDT | $0.9985 0.0002956 Eth | $30,526,443.00 34,115,586.120 ADA | 0.0002% |
89 | OKX | MOVE-USDT | $0.9984 0.0002956 Eth | $30,107,744.00 30,069,430.200 MOVE | 0.0002% |
90 | CoinEx | BTC-USDT | $0.9985 0.0002956 Eth | $29,675,218.00 312.705 BTC | 0.0000% |
91 | MEXC | KAS-USDT | $0.9975 0.0002952 Eth | $28,824,033.00 242,674,125.480 KAS | 0.0017% |
92 | BingX | ETH-USDT | $0.9984 0.0002956 Eth | $27,926,812.00 8,242.552 ETH | 0.0000% |
93 | OKX | XRP-USDT | $0.9984 0.0002956 Eth | $26,113,875.00 11,975,895.072 XRP | 0.0001% |
94 | Binance | DOT-USDT | $0.9983 0.0002952 Eth | $25,535,904.00 3,622,915.380 DOT | 0.0000% |
95 | Binance | ROSE-USDT | $0.9984 0.0002938 Eth | $23,537,136.00 254,914,322.800 ROSE | 0.0018% |
96 | WhiteBIT | AAVE-USDT | $0.9985 0.0002956 Eth | $23,059,684.00 68,817.328 AAVE | 0.0000% |
97 | Hibt | ETH-USDT | $0.9984 0.0002957 Eth | $22,645,754.00 6,684.268 ETH | 0.0000% |
98 | Azbit | BTC-USDT | $0.9983 0.0002933 Eth | $22,389,410.00 236.049 BTC | 0.0000% |
99 | LBank | ADA-USDT | $0.9982 0.0002936 Eth | $22,274,556.00 24,598,935.600 ADA | 0.0002% |
100 | WhiteBIT | LINK-USDT | $0.9986 0.0002933 Eth | $19,852,934.00 915,354.990 LINK | 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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