Feature Tip: Add private address tag to any address under My Name Tag !
Overview
Max Total Supply
10,000,000 COMP
Holders
219,275 ( -0.048%)
Market
Price
$118.15 @ 0.029554 ETH (+0.81%)
Onchain Market Cap
$1,181,500,000.00
Circulating Supply Market Cap
$1,046,380,235.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.007013317282888936 COMPValue
$0.83 ( ~0.000207619190201468 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | BTCC | COMP-USDT | $117.48 0.0293762 Eth | $27,696,634.00 230,762.677 COMP | 16.5292% |
2 | Binance | COMP-USDT | $117.90 0.0295021 Eth | $23,498,430.00 195,504.184 COMP | 14.0036% |
3 | WhiteBIT | COMP-USDT | $117.61 0.0294420 Eth | $13,318,438.00 113,244.670 COMP | 8.1115% |
4 | Websea | COMP-USDT | $118.28 0.0296185 Eth | $12,739,164.00 0.000 COMP | 0.0000% |
5 | P2B | COMP-USDT | $117.84 0.0294995 Eth | $11,474,223.00 97,372.226 COMP | 6.9746% |
6 | Icrypex | COMP-USDT | $119.34 0.0298859 Eth | $7,904,169.00 66,231.135 COMP | 4.7440% |
7 | Coinbase Exchange | COMP-USD | $117.69 0.0294356 Eth | $6,989,200.00 59,386.528 COMP | 4.2538% |
8 | OKX | COMP-USDT | $117.57 0.0294014 Eth | $6,666,541.00 55,561.712 COMP | 3.9798% |
9 | Ourbit | COMP-USDT | $117.68 0.0294352 Eth | $6,099,446.00 50,812.150 COMP | 3.6396% |
10 | Azbit | COMP-USDT | $117.65 0.0294533 Eth | $5,409,524.00 45,253.090 COMP | 3.2414% |
11 | Toobit | COMP-USDT | $117.74 0.0294492 Eth | $4,378,908.00 36,438.535 COMP | 2.6100% |
12 | BYDFi | COMP-USDT | $117.63 0.0294444 Eth | $3,726,658.00 31,681.812 COMP | 2.2693% |
13 | BTSE | COMP-USDT | $117.56 0.0293982 Eth | $3,308,447.00 28,141.756 COMP | 2.0157% |
14 | Bitunix | COMP-USDT | $118.00 0.0295516 Eth | $2,966,159.00 25,144.596 COMP | 1.8011% |
15 | Biconomy.com | COMP-USDT | $117.54 0.0294206 Eth | $2,801,322.00 23,381.980 COMP | 1.6748% |
16 | Uniswap V3 (Ethereum) | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $118.09 0.0295619 Eth | $2,472,493.00 20,539.108 0XC00E94CB662C3520282E6F5717214004A7F26888 | 1.4712% |
17 | HTX | COMP-USDT | $117.57 0.0294014 Eth | $2,383,028.00 19,938.005 COMP | 1.4281% |
18 | DigiFinex | COMP-USDT | $117.60 0.0294152 Eth | $2,367,445.00 20,131.626 COMP | 1.4420% |
19 | Phemex | COMP-USDT | $117.60 0.0294395 Eth | $2,029,476.00 17,257.796 COMP | 1.2361% |
20 | Bitrue | COMP-USDT | $117.76 0.0294805 Eth | $1,835,047.00 15,582.560 COMP | 1.1162% |
21 | Kraken | COMP-USD | $117.66 0.0294242 Eth | $1,582,969.00 13,453.756 COMP | 0.9637% |
22 | Gate.io | COMP-USDT | $117.18 0.0293011 Eth | $1,567,830.00 13,131.375 COMP | 0.9406% |
23 | Bybit | COMP-USDT | $117.76 0.0294555 Eth | $1,556,775.00 12,971.069 COMP | 0.9291% |
24 | WEEX | COMP-USDT | $117.63 0.0294424 Eth | $1,502,088.00 12,769.448 COMP | 0.9147% |
25 | BVOX | COMP-USDT | $118.26 0.0296053 Eth | $1,461,873.00 12,225.875 COMP | 0.8757% |
26 | Bithumb | COMP-KRW | $115.42 0.0288618 Eth | $1,254,375.00 10,868.075 COMP | 0.7785% |
27 | CoinW | COMP-USDT | $117.64 0.0294164 Eth | $1,154,887.00 9,817.424 COMP | 0.7032% |
28 | Koinpark | COMP-INR | $119.91 0.0299948 Eth | $989,345.00 8,250.474 COMP | 0.5910% |
29 | LBank | COMP-USDT | $118.83 0.0297305 Eth | $957,046.00 8,053.970 COMP | 0.5769% |
30 | PointPay | COMP-USDT | $118.64 0.0297036 Eth | $898,999.00 7,480.316 COMP | 0.5358% |
31 | FameEX | COMP-USDT | $119.26 0.0298662 Eth | $897,201.00 7,466.935 COMP | 0.5348% |
32 | MEXC | COMP-USDT | $117.71 0.0294685 Eth | $791,803.00 6,726.534 COMP | 0.4818% |
33 | Dex-Trade | COMP-USDT | $119.30 0.0298763 Eth | $786,158.00 6,589.630 COMP | 0.4720% |
34 | BitDelta | COMP-USDT | $119.03 0.0297830 Eth | $780,377.00 6,501.341 COMP | 0.4657% |
35 | Trubit | COMP-USDT | $118.63 0.0296749 Eth | $745,199.00 6,223.508 COMP | 0.4458% |
36 | Pionex | COMP-USDT | $117.74 0.0294758 Eth | $671,345.00 5,589.356 COMP | 0.4004% |
37 | Hibt | COMP-USDT | $117.65 0.0294535 Eth | $638,710.00 5,318.246 COMP | 0.3809% |
38 | EarnBIT | COMP-USDT | $117.80 0.0294910 Eth | $625,967.00 5,212.569 COMP | 0.3734% |
39 | Hotcoin | COMP-USDT | $117.73 0.0294666 Eth | $624,186.00 5,301.926 COMP | 0.3798% |
40 | Bitget | COMP-USDT | $117.69 0.0294380 Eth | $561,846.00 4,671.697 COMP | 0.3346% |
41 | HitBTC | COMP-USDT | $117.75 0.0294472 Eth | $541,959.00 4,527.692 COMP | 0.3243% |
42 | FMFW.io | COMP-USDT | $118.56 0.0296566 Eth | $534,265.00 4,506.294 COMP | 0.3228% |
43 | Binance | COMP-TRY | $118.34 0.0295914 Eth | $523,508.00 4,340.688 COMP | 0.3109% |
44 | Deepcoin | COMP-USDT | $117.60 0.0294089 Eth | $488,037.00 4,066.854 COMP | 0.2913% |
45 | Nonkyc.io | COMP-USDT | $117.31 0.0293674 Eth | $459,237.00 3,831.114 COMP | 0.2744% |
46 | KuCoin | COMP-USDT | $117.83 0.0294640 Eth | $431,969.00 3,666.139 COMP | 0.2626% |
47 | Binance | COMP-BTC | $117.63 0.0294243 Eth | $429,357.00 3,556.366 COMP | 0.2547% |
48 | tanX | COMP-USDT | $117.64 0.0294252 Eth | $420,615.00 3,513.385 COMP | 0.2517% |
49 | KickEX | COMP-USDT | $118.40 0.0296406 Eth | $355,760.00 3,004.772 COMP | 0.2152% |
50 | BitMart | COMP-USDT | $117.69 0.0294287 Eth | $315,414.00 2,680.144 COMP | 0.1920% |
51 | BingX | COMP-USDT | $117.63 0.0294229 Eth | $302,016.00 2,516.825 COMP | 0.1803% |
52 | CoinEx | COMP-USDT | $119.18 0.0298475 Eth | $294,912.00 2,472.074 COMP | 0.1771% |
53 | Bitazza | COMP-USDT | $117.61 0.0294433 Eth | $288,427.00 2,412.572 COMP | 0.1728% |
54 | LATOKEN | COMP-BTC | $119.83 0.0299966 Eth | $286,126.00 2,387.706 COMP | 0.1710% |
55 | Kraken | COMP-EUR | $117.63 0.0294163 Eth | $285,333.00 2,425.712 COMP | 0.1737% |
56 | Bitvavo | COMP-EUR | $118.90 0.0297475 Eth | $281,768.00 2,369.846 COMP | 0.1697% |
57 | Bit2Me | COMP-EUR | $117.65 0.0294499 Eth | $271,562.00 2,313.321 COMP | 0.1657% |
58 | LATOKEN | COMP-USDT | $117.74 0.0294412 Eth | $208,428.00 1,770.305 COMP | 0.1268% |
59 | P2B | COMP-USD | $117.64 0.0294256 Eth | $183,301.00 1,558.155 COMP | 0.1116% |
60 | CoinTR | COMP-TRY | $118.45 0.0296221 Eth | $156,743.00 1,305.733 COMP | 0.0935% |
61 | Tokenize | COMP-SGD | $117.71 0.0294782 Eth | $149,727.00 1,271.958 COMP | 0.0911% |
62 | Tokenize | COMP-USD | $116.42 0.0291122 Eth | $148,586.00 1,276.290 COMP | 0.0914% |
63 | AscendEX (BitMax) | COMP-USDT | $117.58 0.0294014 Eth | $144,298.00 1,227.272 COMP | 0.0879% |
64 | Coinbase Exchange | COMP-BTC | $117.72 0.0294432 Eth | $118,287.00 1,004.809 COMP | 0.0720% |
65 | Koinpark | COMP-USDT | $117.61 0.0294167 Eth | $115,038.00 978.092 COMP | 0.0701% |
66 | Azbit | COMP-BTC | $117.92 0.0295218 Eth | $111,304.00 926.938 COMP | 0.0664% |
67 | QMall | COMP-USDT | $117.86 0.0295059 Eth | $108,997.00 907.274 COMP | 0.0650% |
68 | Kraken | COMP-XBT | $117.45 0.0293704 Eth | $89,303.00 760.383 COMP | 0.0545% |
69 | Bitso | COMP-USD | $117.30 0.0293597 Eth | $83,886.00 715.135 COMP | 0.0512% |
70 | BloFin | COMP-USDT | $117.74 0.0294691 Eth | $81,658.00 681.289 COMP | 0.0488% |
71 | Bitkub | COMP-THB | $119.12 0.0298026 Eth | $79,831.00 670.184 COMP | 0.0480% |
72 | Upbit | COMP-BTC | $119.62 0.0299208 Eth | $79,120.00 661.426 COMP | 0.0474% |
73 | Bitfinex | COMP-USD | $117.79 0.0294631 Eth | $77,840.00 660.841 COMP | 0.0473% |
74 | bitcastle | COMP-USDT | $117.55 0.0294017 Eth | $69,343.00 576.806 COMP | 0.0413% |
75 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0XC00E94CB662C3520282E6F5717214004A7F26888 | $117.99 0.0295317 Eth | $57,706.00 209.653 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0150% |
76 | Crypto.com Exchange | COMP-USD | $117.55 0.0293948 Eth | $44,354.00 377.320 COMP | 0.0270% |
77 | CoinTR | COMP-USDT | $117.77 0.0294515 Eth | $43,767.00 365.856 COMP | 0.0262% |
78 | Gemini | COMP-USD | $118.43 0.0296167 Eth | $40,265.00 339.993 COMP | 0.0244% |
79 | PancakeSwap V1 (BSC) | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $118.30 0.0295897 Eth | $32,229.00 276.235 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0198% |
80 | OKX | COMP-USDC | $117.21 0.0293125 Eth | $29,922.00 249.196 COMP | 0.0178% |
81 | Bit2Me | COMP-USDC | $117.03 0.0292948 Eth | $27,225.00 226.338 COMP | 0.0162% |
82 | Globe | COMP-USDT | $118.95 0.0297534 Eth | $27,136.00 225.577 COMP | 0.0162% |
83 | Nonkyc.io | COMP-BTC | $118.47 0.0296461 Eth | $25,431.00 211.830 COMP | 0.0152% |
84 | Bitfinex | COMP-USDT | $117.60 0.0294152 Eth | $24,688.00 209.931 COMP | 0.0150% |
85 | DeGate | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $118.10 0.0295647 Eth | $22,327.00 186.351 0XC00E94CB662C3520282E6F5717214004A7F26888 | 0.0133% |
86 | HashKey Global | COMP-USDT | $118.95 0.0297593 Eth | $17,103.20 142.902 COMP | 0.0102% |
87 | TokoCrypto | COMP-USDT | $118.77 0.0297106 Eth | $16,746.82 140.997 COMP | 0.0101% |
88 | ApeSwap | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $118.39 0.0296136 Eth | $11,634.64 98.999 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0071% |
89 | WOO X | COMP-USDT | $118.98 0.0297991 Eth | $7,146.68 60.064 COMP | 0.0043% |
90 | CEX.IO | COMP-USD | $117.81 0.0294954 Eth | $6,747.51 56.034 COMP | 0.0040% |
91 | PancakeSwap V3 (BSC) | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $119.01 0.0297936 Eth | $5,017.75 43.194 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0031% |
92 | Uniswap V3 (Polygon) | 0X8505B9D2254A7AE468C0E9DD10CCEA3A837AEF5C-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $118.80 0.0297343 Eth | $4,434.14 36.833 0X8505B9D2254A7AE468C0E9DD10CCEA3A837AEF5C | 0.0026% |
93 | Uniswap V3 (Polygon) | 0X8505B9D2254A7AE468C0E9DD10CCEA3A837AEF5C-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $118.10 0.0295589 Eth | $3,596.65 30.434 0X8505B9D2254A7AE468C0E9DD10CCEA3A837AEF5C | 0.0022% |
94 | CEX.IO | COMP-USDT | $117.41 0.0293873 Eth | $3,117.90 25.803 COMP | 0.0018% |
95 | Uniswap V3 (Arbitrum One) | 0X354A6DA3FCDE098F8389CAD84B0182725C6C91DE-0X912CE59144191C1204E64559FE8253A0E49E6548 | $117.33 0.0293615 Eth | $3,110.72 26.038 0X354A6DA3FCDE098F8389CAD84B0182725C6C91DE | 0.0019% |
96 | Uniswap V3 (Arbitrum One) | 0X354A6DA3FCDE098F8389CAD84B0182725C6C91DE-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $117.44 0.0293744 Eth | $2,510.39 20.921 0X354A6DA3FCDE098F8389CAD84B0182725C6C91DE | 0.0015% |
97 | CEX.IO | COMP-EUR | $118.13 0.0295744 Eth | $24.41 0.208 COMP | 0.0000% |
98 | CEX.IO | COMP-USDC | $118.07 0.0295328 Eth | $22.96 0.195 COMP | 0.0000% |
99 | TokoCrypto | COMP-BTC | $117.95 0.0295013 Eth | $13.49 0.114 COMP | 0.0000% |
100 | Coinmetro | COMP-USDT | $118.21 0.0295960 Eth | $0.00 0.000 COMP | 0.0000% |
Contract Name:
Comp
Compiler Version
v0.5.16+commit.9c3226ce
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion, Audited
Contract Source Code (Solidity)Audit Report
/** *Submitted for verification at Etherscan.io on 2020-03-04 */ pragma solidity ^0.5.16; pragma experimental ABIEncoderV2; contract Comp { /// @notice EIP-20 token name for this token string public constant name = "Compound"; /// @notice EIP-20 token symbol for this token string public constant symbol = "COMP"; /// @notice EIP-20 token decimals for this token uint8 public constant decimals = 18; /// @notice Total number of tokens in circulation uint public constant totalSupply = 10000000e18; // 10 million Comp /// @notice Allowance amounts on behalf of others mapping (address => mapping (address => uint96)) internal allowances; /// @notice Official record of token balances for each account mapping (address => uint96) internal balances; /// @notice A record of each accounts delegate mapping (address => address) public delegates; /// @notice A checkpoint for marking number of votes from a given block struct Checkpoint { uint32 fromBlock; uint96 votes; } /// @notice A record of votes checkpoints for each account, by index mapping (address => mapping (uint32 => Checkpoint)) public checkpoints; /// @notice The number of checkpoints for each account mapping (address => uint32) public numCheckpoints; /// @notice The EIP-712 typehash for the contract's domain bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)"); /// @notice The EIP-712 typehash for the delegation struct used by the contract bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)"); /// @notice A record of states for signing / validating signatures mapping (address => uint) public nonces; /// @notice An event thats emitted when an account changes its delegate event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate); /// @notice An event thats emitted when a delegate account's vote balance changes event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance); /// @notice The standard EIP-20 transfer event event Transfer(address indexed from, address indexed to, uint256 amount); /// @notice The standard EIP-20 approval event event Approval(address indexed owner, address indexed spender, uint256 amount); /** * @notice Construct a new Comp token * @param account The initial account to grant all the tokens */ constructor(address account) public { balances[account] = uint96(totalSupply); emit Transfer(address(0), account, totalSupply); } /** * @notice Get the number of tokens `spender` is approved to spend on behalf of `account` * @param account The address of the account holding the funds * @param spender The address of the account spending the funds * @return The number of tokens approved */ function allowance(address account, address spender) external view returns (uint) { return allowances[account][spender]; } /** * @notice Approve `spender` to transfer up to `amount` from `src` * @dev This will overwrite the approval amount for `spender` * and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve) * @param spender The address of the account which may transfer tokens * @param rawAmount The number of tokens that are approved (2^256-1 means infinite) * @return Whether or not the approval succeeded */ function approve(address spender, uint rawAmount) external returns (bool) { uint96 amount; if (rawAmount == uint(-1)) { amount = uint96(-1); } else { amount = safe96(rawAmount, "Comp::approve: amount exceeds 96 bits"); } allowances[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } /** * @notice Get the number of tokens held by the `account` * @param account The address of the account to get the balance of * @return The number of tokens held */ function balanceOf(address account) external view returns (uint) { return balances[account]; } /** * @notice Transfer `amount` tokens from `msg.sender` to `dst` * @param dst The address of the destination account * @param rawAmount The number of tokens to transfer * @return Whether or not the transfer succeeded */ function transfer(address dst, uint rawAmount) external returns (bool) { uint96 amount = safe96(rawAmount, "Comp::transfer: amount exceeds 96 bits"); _transferTokens(msg.sender, dst, amount); return true; } /** * @notice Transfer `amount` tokens from `src` to `dst` * @param src The address of the source account * @param dst The address of the destination account * @param rawAmount The number of tokens to transfer * @return Whether or not the transfer succeeded */ function transferFrom(address src, address dst, uint rawAmount) external returns (bool) { address spender = msg.sender; uint96 spenderAllowance = allowances[src][spender]; uint96 amount = safe96(rawAmount, "Comp::approve: amount exceeds 96 bits"); if (spender != src && spenderAllowance != uint96(-1)) { uint96 newAllowance = sub96(spenderAllowance, amount, "Comp::transferFrom: transfer amount exceeds spender allowance"); allowances[src][spender] = newAllowance; emit Approval(src, spender, newAllowance); } _transferTokens(src, dst, amount); return true; } /** * @notice Delegate votes from `msg.sender` to `delegatee` * @param delegatee The address to delegate votes to */ function delegate(address delegatee) public { return _delegate(msg.sender, delegatee); } /** * @notice Delegates votes from signatory to `delegatee` * @param delegatee The address to delegate votes to * @param nonce The contract state required to match the signature * @param expiry The time at which to expire the signature * @param v The recovery byte of the signature * @param r Half of the ECDSA signature pair * @param s Half of the ECDSA signature pair */ function delegateBySig(address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s) public { bytes32 domainSeparator = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), getChainId(), address(this))); bytes32 structHash = keccak256(abi.encode(DELEGATION_TYPEHASH, delegatee, nonce, expiry)); bytes32 digest = keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); address signatory = ecrecover(digest, v, r, s); require(signatory != address(0), "Comp::delegateBySig: invalid signature"); require(nonce == nonces[signatory]++, "Comp::delegateBySig: invalid nonce"); require(now <= expiry, "Comp::delegateBySig: signature expired"); return _delegate(signatory, delegatee); } /** * @notice Gets the current votes balance for `account` * @param account The address to get votes balance * @return The number of current votes for `account` */ function getCurrentVotes(address account) external view returns (uint96) { uint32 nCheckpoints = numCheckpoints[account]; return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0; } /** * @notice Determine the prior number of votes for an account as of a block number * @dev Block number must be a finalized block or else this function will revert to prevent misinformation. * @param account The address of the account to check * @param blockNumber The block number to get the vote balance at * @return The number of votes the account had as of the given block */ function getPriorVotes(address account, uint blockNumber) public view returns (uint96) { require(blockNumber < block.number, "Comp::getPriorVotes: not yet determined"); uint32 nCheckpoints = numCheckpoints[account]; if (nCheckpoints == 0) { return 0; } // First check most recent balance if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) { return checkpoints[account][nCheckpoints - 1].votes; } // Next check implicit zero balance if (checkpoints[account][0].fromBlock > blockNumber) { return 0; } uint32 lower = 0; uint32 upper = nCheckpoints - 1; while (upper > lower) { uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow Checkpoint memory cp = checkpoints[account][center]; if (cp.fromBlock == blockNumber) { return cp.votes; } else if (cp.fromBlock < blockNumber) { lower = center; } else { upper = center - 1; } } return checkpoints[account][lower].votes; } function _delegate(address delegator, address delegatee) internal { address currentDelegate = delegates[delegator]; uint96 delegatorBalance = balances[delegator]; delegates[delegator] = delegatee; emit DelegateChanged(delegator, currentDelegate, delegatee); _moveDelegates(currentDelegate, delegatee, delegatorBalance); } function _transferTokens(address src, address dst, uint96 amount) internal { require(src != address(0), "Comp::_transferTokens: cannot transfer from the zero address"); require(dst != address(0), "Comp::_transferTokens: cannot transfer to the zero address"); balances[src] = sub96(balances[src], amount, "Comp::_transferTokens: transfer amount exceeds balance"); balances[dst] = add96(balances[dst], amount, "Comp::_transferTokens: transfer amount overflows"); emit Transfer(src, dst, amount); _moveDelegates(delegates[src], delegates[dst], amount); } function _moveDelegates(address srcRep, address dstRep, uint96 amount) internal { if (srcRep != dstRep && amount > 0) { if (srcRep != address(0)) { uint32 srcRepNum = numCheckpoints[srcRep]; uint96 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0; uint96 srcRepNew = sub96(srcRepOld, amount, "Comp::_moveVotes: vote amount underflows"); _writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew); } if (dstRep != address(0)) { uint32 dstRepNum = numCheckpoints[dstRep]; uint96 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0; uint96 dstRepNew = add96(dstRepOld, amount, "Comp::_moveVotes: vote amount overflows"); _writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew); } } } function _writeCheckpoint(address delegatee, uint32 nCheckpoints, uint96 oldVotes, uint96 newVotes) internal { uint32 blockNumber = safe32(block.number, "Comp::_writeCheckpoint: block number exceeds 32 bits"); if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) { checkpoints[delegatee][nCheckpoints - 1].votes = newVotes; } else { checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes); numCheckpoints[delegatee] = nCheckpoints + 1; } emit DelegateVotesChanged(delegatee, oldVotes, newVotes); } function safe32(uint n, string memory errorMessage) internal pure returns (uint32) { require(n < 2**32, errorMessage); return uint32(n); } function safe96(uint n, string memory errorMessage) internal pure returns (uint96) { require(n < 2**96, errorMessage); return uint96(n); } function add96(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) { uint96 c = a + b; require(c >= a, errorMessage); return c; } function sub96(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) { require(b <= a, errorMessage); return a - b; } function getChainId() internal pure returns (uint) { uint256 chainId; assembly { chainId := chainid() } return chainId; } }
Contract Security Audit
- Open Zeppelin- Feb 25th, 2020 - Security Audit Report
[{"inputs":[{"internalType":"address","name":"account","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"delegator","type":"address"},{"indexed":true,"internalType":"address","name":"fromDelegate","type":"address"},{"indexed":true,"internalType":"address","name":"toDelegate","type":"address"}],"name":"DelegateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"delegate","type":"address"},{"indexed":false,"internalType":"uint256","name":"previousBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newBalance","type":"uint256"}],"name":"DelegateVotesChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"constant":true,"inputs":[],"name":"DELEGATION_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"DOMAIN_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"rawAmount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint32","name":"","type":"uint32"}],"name":"checkpoints","outputs":[{"internalType":"uint32","name":"fromBlock","type":"uint32"},{"internalType":"uint96","name":"votes","type":"uint96"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"delegatee","type":"address"}],"name":"delegate","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"delegatee","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"delegateBySig","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"delegates","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"getCurrentVotes","outputs":[{"internalType":"uint96","name":"","type":"uint96"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"getPriorVotes","outputs":[{"internalType":"uint96","name":"","type":"uint96"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"numCheckpoints","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"rawAmount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"src","type":"address"},{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"rawAmount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000001449e0687810bddd356ae6dd87789244a46d9adb
-----Decoded View---------------
Arg [0] : account (address): 0x1449e0687810BdDD356ae6Dd87789244A46d9AdB
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000001449e0687810bddd356ae6dd87789244a46d9adb
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