Overview
Max Total Supply
10,000,000 COMP
Holders
219,981 ( 0.003%)
Market
Price
$41.81 @ 0.018145 ETH (+1.25%)
Onchain Market Cap
$418,100,000.00
Circulating Supply Market Cap
$363,212,455.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.038048736638959616 COMPValue
$1.59 ( ~0.000690049109670137 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | COMP-USDT | $41.83 0.0181540 Eth | $3,827,188.00 93,292.070 COMP | 13.8938% |
2 | ![]() | COMP-USDT | $41.65 0.0181007 Eth | $2,705,811.00 65,952.754 COMP | 9.8222% |
3 | ![]() | COMP-USDT | $41.69 0.0181146 Eth | $2,471,364.00 60,088.916 COMP | 8.9489% |
4 | ![]() | COMP-USDT | $41.81 0.0181693 Eth | $1,961,042.00 46,941.801 COMP | 6.9909% |
5 | ![]() | COMP-USDT | $41.68 0.0181137 Eth | $1,833,871.00 44,002.934 COMP | 6.5532% |
6 | ![]() | COMP-USDT | $41.67 0.0181059 Eth | $1,797,009.00 43,611.550 COMP | 6.4950% |
7 | ![]() | COMP-USDT | $41.66 0.0181043 Eth | $1,432,656.00 34,785.180 COMP | 5.1805% |
8 | ![]() | COMP-USDT | $41.69 0.0181146 Eth | $1,373,528.00 32,948.204 COMP | 4.9069% |
9 | ![]() | COMP-USDT | $41.67 0.0181093 Eth | $766,842.00 18,693.019 COMP | 2.7839% |
10 | ![]() | COMP-USDT | $41.68 0.0181137 Eth | $755,952.00 18,413.602 COMP | 2.7423% |
11 | ![]() | COMP-USD | $41.64 0.0180936 Eth | $729,653.00 17,522.879 COMP | 2.6096% |
12 | ![]() | COMP-USDT | $41.67 0.0181093 Eth | $696,779.00 17,018.254 COMP | 2.5345% |
13 | ![]() | COMP-USDT | $41.82 0.0181329 Eth | $671,673.00 16,062.624 COMP | 2.3922% |
14 | ![]() | COMP-USDT | $41.71 0.0181258 Eth | $605,165.00 0.000 COMP | 0.0000% |
15 | ![]() | COMP-USDT | $41.77 0.0181120 Eth | $428,461.00 10,258.188 COMP | 1.5277% |
16 | ![]() | COMP-USDT | $41.70 0.0181180 Eth | $402,282.00 9,834.585 COMP | 1.4646% |
17 | ![]() | COMP-SGD | $41.57 0.0180693 Eth | $395,402.00 9,510.802 COMP | 1.4164% |
18 | ![]() | COMP-USDT | $41.67 0.0181085 Eth | $387,738.00 9,304.749 COMP | 1.3857% |
19 | ![]() | COMP-USDT | $41.68 0.0181128 Eth | $375,975.00 9,020.310 COMP | 1.3434% |
20 | ![]() | COMP-USDT | $41.69 0.0181173 Eth | $346,294.00 8,307.221 COMP | 1.2372% |
21 | ![]() | COMP-USDT | $41.66 0.0181016 Eth | $344,158.00 8,261.447 COMP | 1.2304% |
22 | ![]() | COMP-USDT | $41.66 0.0181066 Eth | $337,170.00 8,093.550 COMP | 1.2054% |
23 | ![]() | COMP-USDT | $41.73 0.0181311 Eth | $329,387.00 7,894.035 COMP | 1.1756% |
24 | ![]() | COMP-USDT | $41.67 0.0181106 Eth | $297,521.00 7,140.235 COMP | 1.0634% |
25 | ![]() | COMP-USDT | $41.57 0.0180625 Eth | $272,622.00 6,615.932 COMP | 0.9853% |
26 | ![]() | COMP-USDT | $41.67 0.0181029 Eth | $191,486.00 4,595.422 COMP | 0.6844% |
27 | ![]() | COMP-USDT | $41.70 0.0181215 Eth | $181,419.00 4,425.725 COMP | 0.6591% |
28 | ![]() | COMP-USDT | $41.72 0.0181302 Eth | $154,783.00 3,772.833 COMP | 0.5619% |
29 | ![]() | COMP-USDT | $41.66 0.0181050 Eth | $153,121.00 3,712.899 COMP | 0.5530% |
30 | ![]() | COMP-USDT | $41.70 0.0181216 Eth | $146,816.00 3,563.702 COMP | 0.5307% |
31 | ![]() | COMP-USDT | $41.76 0.0181784 Eth | $145,264.00 3,520.875 COMP | 0.5244% |
32 | ![]() | COMP-USDT | $41.75 0.0181441 Eth | $143,551.00 3,438.665 COMP | 0.5121% |
33 | ![]() | COMP-USDT | $41.69 0.0181132 Eth | $119,718.00 2,871.968 COMP | 0.4277% |
34 | ![]() | COMP-USDT | $41.80 0.0181615 Eth | $116,236.00 2,781.023 COMP | 0.4142% |
35 | ![]() | COMP-USDT | $41.66 0.0181050 Eth | $115,651.00 2,818.412 COMP | 0.4197% |
36 | ![]() | COMP-USDT | $41.74 0.0181221 Eth | $111,970.00 2,726.066 COMP | 0.4060% |
37 | ![]() | COMP-USDT | $41.81 0.0181668 Eth | $99,054.00 2,432.708 COMP | 0.3623% |
38 | ![]() | COMP-USDT | $41.67 0.0181093 Eth | $98,772.00 2,424.428 COMP | 0.3611% |
39 | ![]() | COMP-USDT | $41.71 0.0181224 Eth | $62,725.00 1,527.259 COMP | 0.2275% |
40 | ![]() | COMP-USDT | $41.69 0.0181004 Eth | $59,471.00 1,448.659 COMP | 0.2157% |
41 | ![]() | COMP-USDT | $41.70 0.0181181 Eth | $56,245.00 1,362.574 COMP | 0.2029% |
42 | ![]() | COMP-USDT | $41.73 0.0181291 Eth | $51,335.00 1,230.195 COMP | 0.1832% |
43 | ![]() | COMP-BTC | $41.70 0.0181185 Eth | $51,096.00 1,225.190 COMP | 0.1825% |
44 | ![]() | COMP-USDT | $41.56 0.0180608 Eth | $49,903.00 1,200.854 COMP | 0.1788% |
45 | ![]() | COMP-USDT | $41.67 0.0181050 Eth | $46,729.00 1,135.637 COMP | 0.1691% |
46 | ![]() | COMP-USDT | $41.68 0.0181146 Eth | $46,372.00 1,132.283 COMP | 0.1686% |
47 | ![]() | 0X354A6DA3FCDE098F8389CAD84B0182725C6C91DE-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $41.53 0.0180477 Eth | $43,899.00 1,057.639 0X354A6DA3FCDE098F8389CAD84B0182725C6C91DE | 0.1575% |
48 | ![]() | COMP-BTC | $41.70 0.0181206 Eth | $38,208.00 915.264 COMP | 0.1363% |
49 | ![]() | COMP-USD | $41.68 0.0181157 Eth | $37,081.00 889.656 COMP | 0.1325% |
50 | ![]() | COMP-USDT | $41.70 0.0181190 Eth | $31,898.00 764.979 COMP | 0.1139% |
51 | ![]() | COMP-USDT | $41.81 0.0181180 Eth | $31,592.00 755.650 COMP | 0.1125% |
52 | ![]() | COMP-USD | $41.69 0.0181197 Eth | $30,074.00 721.378 COMP | 0.1074% |
53 | ![]() | COMP-USD | $41.95 0.0182124 Eth | $27,541.00 656.548 COMP | 0.0978% |
54 | ![]() | COMP-USDT | $41.83 0.0181724 Eth | $27,391.00 654.843 COMP | 0.0975% |
55 | ![]() | COMP-USDT | $41.74 0.0181221 Eth | $24,721.00 592.260 COMP | 0.0882% |
56 | ![]() | COMP-USDT | $41.76 0.0181476 Eth | $19,341.13 463.139 COMP | 0.0690% |
57 | ![]() | COMP-USDT | $41.69 0.0181171 Eth | $18,717.22 456.308 COMP | 0.0680% |
58 | ![]() | COMP-USDT | $41.81 0.0181658 Eth | $18,063.35 438.717 COMP | 0.0653% |
59 | ![]() | COMP-USDT | $41.66 0.0181006 Eth | $14,499.08 348.066 COMP | 0.0518% |
60 | ![]() | COMP-BTC | $41.65 0.0180969 Eth | $13,030.55 312.878 COMP | 0.0466% |
61 | ![]() | COMP-USD | $41.75 0.0181382 Eth | $12,982.68 310.962 COMP | 0.0463% |
62 | ![]() | COMP-BTC | $41.79 0.0181277 Eth | $12,373.40 296.643 COMP | 0.0442% |
63 | ![]() | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $41.90 0.0181792 Eth | $11,754.72 279.306 0XC00E94CB662C3520282E6F5717214004A7F26888 | 0.0416% |
64 | ![]() | 0X354A6DA3FCDE098F8389CAD84B0182725C6C91DE-0XADF5DD3E51BF28AB4F07E684ECF5D00691818790 | $41.53 0.0180507 Eth | $11,693.12 276.795 0X354A6DA3FCDE098F8389CAD84B0182725C6C91DE | 0.0412% |
65 | ![]() | COMP-EUR | $41.73 0.0181347 Eth | $10,497.44 251.529 COMP | 0.0375% |
66 | ![]() | COMP-USDT | $41.67 0.0181050 Eth | $10,096.34 245.891 COMP | 0.0366% |
67 | ![]() | COMP-BTC | $41.76 0.0181444 Eth | $9,634.73 230.734 COMP | 0.0344% |
68 | ![]() | COMP-PHP | $41.65 0.0180950 Eth | $9,611.88 233.755 COMP | 0.0348% |
69 | ![]() | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $41.75 0.0181429 Eth | $9,013.82 214.797 0XC00E94CB662C3520282E6F5717214004A7F26888 | 0.0320% |
70 | ![]() | COMP-USDT | $41.69 0.0181103 Eth | $8,751.94 209.950 COMP | 0.0313% |
71 | ![]() | COMP-USD | $41.70 0.0181235 Eth | $8,441.80 205.917 COMP | 0.0307% |
72 | ![]() | COMP-USDT | $41.69 0.0181180 Eth | $8,167.20 198.610 COMP | 0.0296% |
73 | ![]() | COMP-USD | $41.76 0.0181472 Eth | $7,054.13 171.215 COMP | 0.0255% |
74 | ![]() | COMP-EUR | $41.77 0.0181520 Eth | $6,788.61 163.693 COMP | 0.0244% |
75 | ![]() | COMP-EUR | $41.77 0.0181449 Eth | $5,723.27 137.033 COMP | 0.0204% |
76 | ![]() | COMP-USD | $41.75 0.0181390 Eth | $5,669.92 135.800 COMP | 0.0202% |
77 | ![]() | COMP-USDT | $41.67 0.0181122 Eth | $4,008.06 97.632 COMP | 0.0145% |
78 | ![]() | COMP-USDT | $41.70 0.0181159 Eth | $3,275.24 78.545 COMP | 0.0117% |
79 | ![]() | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $41.86 0.0181913 Eth | $2,567.98 61.272 0XC00E94CB662C3520282E6F5717214004A7F26888 | 0.0091% |
80 | ![]() | COMP-USDC | $41.55 0.0180540 Eth | $1,781.18 44.132 COMP | 0.0066% |
81 | ![]() | 0X4621B7A9C75199271F773EBD9A499DBD165C3191-0X9E1028F5F1D5EDE59748FFCEE5532509976840E0 | $41.51 0.0180351 Eth | $1,546.47 1,524.052 0X4621B7A9C75199271F773EBD9A499DBD165C3191 | 0.2270% |
82 | ![]() | COMP-THB | $41.81 0.0181697 Eth | $1,182.69 28.598 COMP | 0.0043% |
83 | ![]() | COMP-USDT | $41.70 0.0181240 Eth | $1,171.65 28.098 COMP | 0.0042% |
84 | ![]() | COMP-BTC | $41.66 0.0181060 Eth | $831.84 20.087 COMP | 0.0030% |
85 | ![]() | COMP-USDT | $41.83 0.0181536 Eth | $816.59 19.522 COMP | 0.0029% |
86 | ![]() | COMP-USDT | $41.70 0.0181052 Eth | $606.01 14.532 COMP | 0.0022% |
87 | ![]() | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $41.98 0.0182406 Eth | $410.24 9.772 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0015% |
88 | ![]() | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $42.07 0.0182440 Eth | $387.73 9.234 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0014% |
89 | ![]() | COMP-USD | $41.83 0.0181800 Eth | $246.99 5.905 COMP | 0.0009% |
90 | ![]() | COMP-XBT | $41.81 0.0181661 Eth | $215.85 5.162 COMP | 0.0008% |
91 | ![]() | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $41.85 0.0181471 Eth | $199.82 4.806 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0007% |
92 | ![]() | COMP-IDR | $41.80 0.0181654 Eth | $94.04 2.254 COMP | 0.0003% |
93 | ![]() | COMP-USDT | $41.69 0.0181180 Eth | $26.20 0.626 COMP | 0.0001% |
94 | ![]() | COMP-USDC | $41.80 0.0181690 Eth | $17.67 0.430 COMP | 0.0001% |
95 | ![]() | COMP-EUR | $41.98 0.0182423 Eth | $17.45 0.417 COMP | 0.0001% |
96 | ![]() | COMP-USD | $41.74 0.0181396 Eth | $15.79 0.385 COMP | 0.0001% |
97 | ![]() | COMP-EUR | $41.76 0.0181519 Eth | $0.00 0.000 COMP | 0.0000% |
98 | ![]() | COMP-USD | $41.66 0.0181067 Eth | $0.00 0.000 COMP | 0.0000% |
99 | ![]() | COMP-USDT | $41.66 0.0181055 Eth | $0.00 0.000 COMP | 0.0000% |
100 | ![]() | COMP-USDC | $41.64 0.0180995 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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