Feature Tip: Add private address tag to any address under My Name Tag !
Overview
Max Total Supply
56,940,064,044.790115 USDT
Holders
6,294,357 ( -0.002%)
Market
Price
$1.00 @ 0.000343 ETH (+0.09%)
Onchain Market Cap
$56,997,004,108.83
Circulating Supply Market Cap
$122,089,979,129.00
Other Info
Token Contract (WITH 6 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | BTC-USDT | $1.001 0.0003424 Eth | $3,147,636,082.00 41,414.849 BTC | 0.0000% |
2 | BVOX | BTC-USDT | $1.001 0.0003426 Eth | $3,034,072,827.00 39,965.201 BTC | 0.0000% |
3 | CoinW | BTC-USDT | $1.001 0.0003424 Eth | $2,435,131,780.00 31,919.735 BTC | 0.0000% |
4 | WEEX | BTC-USDT | $1.002 0.0003419 Eth | $2,149,848,032.00 28,266.928 BTC | 0.0000% |
5 | Bybit | BTC-USDT | $1.001 0.0003424 Eth | $1,856,716,917.00 24,466.147 BTC | 0.0000% |
6 | Toobit | BTC-USDT | $1.001 0.0003419 Eth | $1,713,373,333.00 22,553.661 BTC | 0.0000% |
7 | Binance | ETH-USDT | $1.001 0.0003424 Eth | $1,696,243,371.00 588,613.611 ETH | 0.0000% |
8 | Pionex | BTC-USDT | $1.001 0.0003420 Eth | $1,632,771,412.00 21,495.802 BTC | 0.0000% |
9 | BitMart | BTC-USDT | $1.001 0.0003420 Eth | $1,515,710,481.00 19,861.965 BTC | 0.0000% |
10 | WEEX | ETH-USDT | $1.001 0.0003419 Eth | $1,254,404,266.00 435,861.600 ETH | 0.0000% |
11 | Tapbit | ETH-USDT | $1.001 0.0003419 Eth | $1,241,601,755.00 430,741.385 ETH | 0.0000% |
12 | Hotcoin | BTC-USDT | $1.001 0.0003420 Eth | $1,216,465,321.00 15,945.166 BTC | 0.0000% |
13 | Toobit | ETH-USDT | $1.001 0.0003425 Eth | $1,123,036,781.00 389,744.053 ETH | 0.0000% |
14 | DigiFinex | BTC-USDT | $0.9999 0.0003419 Eth | $1,089,035,537.00 14,302.309 BTC | 0.0000% |
15 | WhiteBIT | BTC-USDT | $1.00 0.0003420 Eth | $1,058,604,441.00 13,884.227 BTC | 0.0000% |
16 | MEXC | ETH-USDT | $0.9999 0.0003419 Eth | $1,038,146,912.00 355,790.745 ETH | 0.0000% |
17 | BVOX | ETH-USDT | $1.00 0.0003419 Eth | $1,008,200,826.00 349,217.379 ETH | 0.0000% |
18 | Coinbase Exchange | USDT-USD | $1.001 0.0003423 Eth | $990,302,408.00 989,342,745.850 USDT | 0.0020% |
19 | BitMart | ETH-USDT | $1.001 0.0003424 Eth | $980,133,339.00 335,490.499 ETH | 0.0000% |
20 | Binance | SOL-USDT | $1.002 0.0003423 Eth | $952,298,011.00 4,843,521.018 SOL | 0.0000% |
21 | Hotcoin | ETH-USDT | $1.00 0.0003420 Eth | $872,998,456.00 298,590.349 ETH | 0.0000% |
22 | Ourbit | BTC-USDT | $1.00 0.0003420 Eth | $829,160,758.00 10,920.039 BTC | 0.0000% |
23 | Gate.io | ETH-USDT | $1.002 0.0003424 Eth | $828,476,308.00 288,034.190 ETH | 0.0000% |
24 | MEXC | BTC-USDT | $0.9999 0.0003419 Eth | $825,277,050.00 10,836.374 BTC | 0.0000% |
25 | OKX | BTC-USDT | $1.001 0.0003424 Eth | $773,769,302.00 10,178.537 BTC | 0.0000% |
26 | Deepcoin | BTC-USDT | $1.001 0.0003424 Eth | $685,133,665.00 9,197.497 BTC | 0.0000% |
27 | P2B | ETH-USDT | $1.001 0.0003424 Eth | $670,930,723.00 229,206.870 ETH | 0.0000% |
28 | AscendEX (BitMax) | BTC-USDT | $1.00 0.0003419 Eth | $667,910,463.00 8,762.348 BTC | 0.0000% |
29 | Binance | FDUSD-USDT | $1.001 0.0003424 Eth | $650,010,405.00 649,693,483.000 FDUSD | 0.0013% |
30 | XT.COM | BTC-USDT | $1.002 0.0003422 Eth | $616,993,409.00 8,116.505 BTC | 0.0000% |
31 | Binance | DOGE-USDT | $1.001 0.0003421 Eth | $611,628,200.00 3,146,183,402.000 DOGE | 0.0065% |
32 | Bybit | ETH-USDT | $1.001 0.0003424 Eth | $609,970,832.00 211,955.542 ETH | 0.0000% |
33 | DigiFinex | ETH-USDT | $0.9999 0.0003419 Eth | $587,996,948.00 201,518.016 ETH | 0.0000% |
34 | OKX | ETH-USDT | $1.001 0.0003424 Eth | $570,915,972.00 198,017.666 ETH | 0.0000% |
35 | WhiteBIT | ETH-USDT | $1.001 0.0003429 Eth | $558,094,438.00 191,275.626 ETH | 0.0000% |
36 | Pionex | ETH-USDT | $1.001 0.0003419 Eth | $546,779,821.00 189,795.047 ETH | 0.0000% |
37 | Bitunix | ETH-USDT | $1.001 0.0003422 Eth | $519,432,780.00 177,449.805 ETH | 0.0000% |
38 | CoinW | ETH-USDT | $1.001 0.0003419 Eth | $503,906,879.00 172,227.774 ETH | 0.0000% |
39 | Deepcoin | ETH-USDT | $1.001 0.0003420 Eth | $491,874,939.00 171,790.031 ETH | 0.0000% |
40 | Binance | NEIRO-USDT | $1.001 0.0003423 Eth | $491,448,608.00 213,481,963,789.000 NEIRO | 0.4401% |
41 | LBank | BTC-USDT | $1.002 0.0003424 Eth | $483,420,540.00 6,333.432 BTC | 0.0000% |
42 | XT.COM | ETH-USDT | $1.001 0.0003427 Eth | $471,778,532.00 163,783.876 ETH | 0.0000% |
43 | OrangeX | ETH-USDT | $1.001 0.0003420 Eth | $457,094,636.00 158,698.882 ETH | 0.0000% |
44 | Binance | PEPE-USDT | $1.001 0.0003424 Eth | $431,691,465.00 40,078,766,120,859.000 PEPE | 82.6218% |
45 | HTX | BTC-USDT | $1.00 0.0003419 Eth | $401,037,252.00 5,286.906 BTC | 0.0000% |
46 | Tapbit | BTC-USDT | $0.9999 0.0003419 Eth | $380,296,003.00 5,009.054 BTC | 0.0000% |
47 | Coinbase Exchange | USDT-USDC | $1.001 0.0003423 Eth | $376,380,494.00 376,038,588.710 USDT | 0.0008% |
48 | BigONE | BTC-USDT | $1.001 0.0003424 Eth | $373,717,344.00 4,895.942 BTC | 0.0000% |
49 | AscendEX (BitMax) | ETH-USDT | $1.00 0.0003419 Eth | $368,670,624.00 126,069.791 ETH | 0.0000% |
50 | Gate.io | BTC-USDT | $1.002 0.0003424 Eth | $354,363,644.00 4,659.657 BTC | 0.0000% |
51 | Ourbit | ETH-USDT | $1.001 0.0003424 Eth | $345,486,048.00 119,769.810 ETH | 0.0000% |
52 | Kraken | USDT-USD | $1.001 0.0003423 Eth | $292,702,787.00 292,404,534.625 USDT | 0.0006% |
53 | Biconomy.com | BTC-USDT | $1.001 0.0003420 Eth | $282,111,306.00 3,715.430 BTC | 0.0000% |
54 | KuCoin | ETH-USDT | $1.001 0.0003424 Eth | $270,415,424.00 92,483.860 ETH | 0.0000% |
55 | Bitget | BTC-USDT | $1.001 0.0003424 Eth | $249,866,399.00 3,291.954 BTC | 0.0000% |
56 | BTSE | BTC-USDT | $1.001 0.0003420 Eth | $241,823,195.00 3,171.466 BTC | 0.0000% |
57 | FameEX | SOL-USDT | $1.001 0.0003427 Eth | $237,939,100.00 1,211,632.357 SOL | 0.0000% |
58 | KuCoin | BTC-USDT | $1.001 0.0003424 Eth | $236,954,073.00 3,106.443 BTC | 0.0000% |
59 | LATOKEN | ETH-USDT | $1.001 0.0003420 Eth | $232,193,061.00 79,293.697 ETH | 0.0000% |
60 | Coinstore | ETH-USDT | $1.001 0.0003420 Eth | $222,726,324.00 77,259.024 ETH | 0.0000% |
61 | Gate.io | DOGE-USDT | $1.002 0.0003424 Eth | $218,820,541.00 1,125,130,492.226 DOGE | 0.0023% |
62 | LBank | ETH-USDT | $1.002 0.0003424 Eth | $217,204,986.00 74,183.850 ETH | 0.0000% |
63 | Fastex | BTC-USDT | $1.001 0.0003419 Eth | $208,003,264.00 2,726.217 BTC | 0.0000% |
64 | Bybit | SOL-USDT | $1.001 0.0003424 Eth | $207,930,478.00 1,060,158.216 SOL | 0.0000% |
65 | Binance | SUI-USDT | $1.001 0.0003429 Eth | $206,633,859.00 89,280,663.500 SUI | 0.0002% |
66 | Coinstore | BTC-USDT | $1.001 0.0003420 Eth | $199,161,895.00 2,621.852 BTC | 0.0000% |
67 | Biconomy.com | ETH-USDT | $1.001 0.0003420 Eth | $191,339,810.00 66,450.406 ETH | 0.0000% |
68 | Azbit | BTC-USDT | $1.001 0.0003423 Eth | $182,757,354.00 2,422.789 BTC | 0.0000% |
69 | Bitget | ETH-USDT | $1.001 0.0003424 Eth | $180,994,150.00 62,928.233 ETH | 0.0000% |
70 | Binance | BNB-USDT | $1.001 0.0003424 Eth | $180,735,731.00 302,081.279 BNB | 0.0000% |
71 | WhiteBIT | SOL-USDT | $1.001 0.0003428 Eth | $174,116,326.00 857,365.685 SOL | 0.0000% |
72 | Deepcoin | SOL-USDT | $1.00 0.0003419 Eth | $173,676,433.00 863,121.279 SOL | 0.0000% |
73 | Dex-Trade | BTC-USDT | $1.001 0.0003424 Eth | $168,508,724.00 2,209.144 BTC | 0.0000% |
74 | BTSE | ETH-USDT | $1.001 0.0003424 Eth | $148,576,799.00 50,752.467 ETH | 0.0000% |
75 | Binance | XRP-USDT | $1.001 0.0003429 Eth | $134,910,903.00 244,949,569.000 XRP | 0.0005% |
76 | Bitunix | SOL-USDT | $1.001 0.0003422 Eth | $127,052,954.00 622,454.810 SOL | 0.0000% |
77 | MEXC | SOL-USDT | $0.9999 0.0003419 Eth | $126,342,143.00 618,114.180 SOL | 0.0000% |
78 | Bitget | SOL-USDT | $1.001 0.0003424 Eth | $118,219,914.00 602,774.859 SOL | 0.0000% |
79 | LBank | SOL-USDT | $1.001 0.0003424 Eth | $116,127,150.00 567,346.943 SOL | 0.0000% |
80 | Bitget | DOGE-USDT | $1.001 0.0003424 Eth | $110,185,527.00 568,031,048.667 DOGE | 0.0012% |
81 | WhiteBIT | ADA-USDT | $1.001 0.0003429 Eth | $109,067,606.00 249,922,198.410 ADA | 0.0005% |
82 | Kraken | USDT-EUR | $1.001 0.0003422 Eth | $107,991,297.00 107,875,455.394 USDT | 0.0002% |
83 | Bybit | MNT-USDT | $1.001 0.0003424 Eth | $104,039,132.00 157,244,187.350 MNT | 0.0003% |
84 | HTX | ETH-USDT | $1.00 0.0003419 Eth | $101,887,605.00 35,542.808 ETH | 0.0000% |
85 | Bitunix | DOGE-USDT | $1.001 0.0003422 Eth | $101,714,926.00 514,145,351.000 DOGE | 0.0011% |
86 | FameEX | DOGE-USDT | $1.001 0.0003420 Eth | $94,287,003.00 484,911,007.142 DOGE | 0.0010% |
87 | DigiFinex | GRASS-USDT | $1.001 0.0003424 Eth | $91,408,112.00 25,307,214.889 GRASS | 0.0001% |
88 | Gate.io | PEPE-USDT | $1.00 0.0003420 Eth | $88,383,173.00 8,167,646,713,505.100 PEPE | 16.8375% |
89 | Gate.io | SOL-USDT | $0.9999 0.0003419 Eth | $82,791,237.00 423,098.412 SOL | 0.0000% |
90 | Slex | BTC-USDT | $1.00 0.0003420 Eth | $81,965,637.00 1,079.592 BTC | 0.0000% |
91 | DigiFinex | SOL-USDT | $0.9999 0.0003419 Eth | $81,897,028.00 400,691.250 SOL | 0.0000% |
92 | Binance | BOME-USDT | $1.001 0.0003424 Eth | $79,784,004.00 9,102,144,770.000 BOME | 0.0188% |
93 | WhiteBIT | DOGE-USDT | $1.002 0.0003424 Eth | $73,020,468.00 369,055,856.000 DOGE | 0.0008% |
94 | BYDFi | BTC-USDT | $1.001 0.0003420 Eth | $72,041,706.00 943.533 BTC | 0.0000% |
95 | WhiteBIT | NEIRO-USDT | $1.001 0.0003427 Eth | $71,185,877.00 29,947,439,527.000 NEIRO | 0.0617% |
96 | DigiFinex | DOGE-USDT | $0.9999 0.0003419 Eth | $69,881,612.00 354,010,684.550 DOGE | 0.0007% |
97 | BingX | BTC-USDT | $1.001 0.0003424 Eth | $63,935,536.00 841.525 BTC | 0.0000% |
98 | Dexalot | AVAX-USDT | $1.001 0.0003429 Eth | $60,295,294.00 2,206,396.634 AVAX | 0.0000% |
99 | CoinEx | BTC-USDT | $1.001 0.0003424 Eth | $53,082,412.00 698.721 BTC | 0.0000% |
100 | BingX | ETH-USDT | $1.001 0.0003424 Eth | $43,495,341.00 15,087.996 ETH | 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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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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