Feature Tip: Add private address tag to any address under My Name Tag !
Overview
Max Total Supply
10,000,000 COMP
Holders
219,376 ( 0.001%)
Market
Price
$86.13 @ 0.024795 ETH (-0.65%)
Onchain Market Cap
$861,300,000.00
Circulating Supply Market Cap
$764,209,786.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.01 COMPValue
$0.86 ( ~0.000247572031312674 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | BTCC | COMP-USDT | $86.19 0.0248336 Eth | $15,453,385.00 178,807.697 COMP | 34.7159% |
2 | WhiteBIT | COMP-USDT | $86.26 0.0248046 Eth | $6,210,344.00 71,992.278 COMP | 13.9775% |
3 | Binance | COMP-USDT | $86.08 0.0247826 Eth | $2,984,934.00 34,568.982 COMP | 6.7116% |
4 | HTX | COMP-USDT | $85.94 0.0247584 Eth | $1,828,005.00 21,158.589 COMP | 4.1080% |
5 | P2B | COMP-USDT | $86.25 0.0248381 Eth | $1,471,712.00 17,063.949 COMP | 3.3130% |
6 | Biconomy.com | COMP-USDT | $86.07 0.0247934 Eth | $1,168,857.00 13,522.580 COMP | 2.6254% |
7 | BVOX | COMP-USDT | $86.04 0.0247777 Eth | $983,766.00 11,376.210 COMP | 2.2087% |
8 | Coinbase Exchange | COMP-USD | $85.95 0.0247526 Eth | $937,435.00 10,906.747 COMP | 2.1176% |
9 | Ourbit | COMP-USDT | $86.58 0.0248835 Eth | $890,188.00 10,309.283 COMP | 2.0016% |
10 | OKX | COMP-USDT | $85.98 0.0247699 Eth | $880,927.00 10,197.743 COMP | 1.9799% |
11 | Icrypex | COMP-USDT | $86.28 0.0248391 Eth | $821,179.00 9,517.162 COMP | 1.8478% |
12 | WEEX | COMP-USDT | $86.33 0.0248491 Eth | $820,017.00 9,483.050 COMP | 1.8412% |
13 | Azbit | COMP-USDT | $86.07 0.0247855 Eth | $780,083.00 9,028.287 COMP | 1.7529% |
14 | Toobit | COMP-USDT | $86.06 0.0247759 Eth | $734,212.00 8,500.216 COMP | 1.6503% |
15 | Hotcoin | COMP-USDT | $85.96 0.0247642 Eth | $718,490.00 8,357.973 COMP | 1.6227% |
16 | Trubit | COMP-USDT | $86.41 0.0248636 Eth | $629,680.00 7,290.382 COMP | 1.4154% |
17 | LBank | COMP-USDT | $86.05 0.0247740 Eth | $578,474.00 6,722.758 COMP | 1.3052% |
18 | BYDFi | COMP-USDT | $86.05 0.0247877 Eth | $536,683.00 6,236.598 COMP | 1.2108% |
19 | Bybit | COMP-USDT | $86.04 0.0247848 Eth | $439,406.00 5,086.128 COMP | 0.9875% |
20 | CoinW | COMP-USDT | $86.25 0.0248535 Eth | $399,291.00 4,629.519 COMP | 0.8988% |
21 | BitMart | COMP-USDT | $85.97 0.0247629 Eth | $358,143.00 4,166.004 COMP | 0.8088% |
22 | DigiFinex | COMP-USDT | $85.99 0.0247704 Eth | $303,350.00 3,527.581 COMP | 0.6849% |
23 | BitDelta | COMP-USDT | $86.15 0.0248017 Eth | $301,122.00 3,483.920 COMP | 0.6764% |
24 | Phemex | COMP-USDT | $86.19 0.0248133 Eth | $297,749.00 3,454.403 COMP | 0.6707% |
25 | Bitazza | COMP-USDT | $85.97 0.0247567 Eth | $289,277.00 3,345.830 COMP | 0.6496% |
26 | tanX | COMP-USDT | $86.30 0.0248572 Eth | $266,777.00 3,088.073 COMP | 0.5996% |
27 | KickEX | COMP-USDT | $86.06 0.0247759 Eth | $257,122.00 2,987.558 COMP | 0.5800% |
28 | Bitunix | COMP-USDT | $86.01 0.0247786 Eth | $251,797.00 2,927.709 COMP | 0.5684% |
29 | Gate.io | COMP-USDT | $85.76 0.0247066 Eth | $240,804.00 2,781.130 COMP | 0.5400% |
30 | Bitrue | COMP-USDT | $85.93 0.0247430 Eth | $210,940.00 2,454.930 COMP | 0.4766% |
31 | MEXC | COMP-USDT | $86.11 0.0247978 Eth | $171,799.00 1,995.177 COMP | 0.3874% |
32 | AscendEX (BitMax) | COMP-USDT | $85.85 0.0247182 Eth | $140,768.00 1,639.627 COMP | 0.3183% |
33 | Koinpark | COMP-INR | $86.45 0.0249000 Eth | $128,361.00 1,484.785 COMP | 0.2883% |
34 | FameEX | COMP-USDT | $86.23 0.0248374 Eth | $119,051.00 1,378.767 COMP | 0.2677% |
35 | PointPay | COMP-USDT | $86.21 0.0248200 Eth | $112,301.00 1,300.812 COMP | 0.2526% |
36 | CoinEx | COMP-USDT | $86.15 0.0247724 Eth | $110,926.00 1,285.717 COMP | 0.2496% |
37 | Dex-Trade | COMP-USDT | $86.04 0.0247687 Eth | $100,605.00 1,169.286 COMP | 0.2270% |
38 | Binance | COMP-BTC | $86.19 0.0248053 Eth | $98,323.00 1,127.094 COMP | 0.2188% |
39 | EarnBIT | COMP-USDT | $86.20 0.0248272 Eth | $92,656.00 1,072.892 COMP | 0.2083% |
40 | BTSE | COMP-USDT | $86.04 0.0247769 Eth | $92,360.00 1,073.418 COMP | 0.2084% |
41 | Pionex | COMP-USDT | $86.12 0.0248113 Eth | $89,638.00 1,038.224 COMP | 0.2016% |
42 | Hibt | COMP-USDT | $85.95 0.0247518 Eth | $87,945.00 1,018.025 COMP | 0.1977% |
43 | Azbit | COMP-BTC | $85.86 0.0247332 Eth | $85,801.00 985.386 COMP | 0.1913% |
44 | Nonkyc.io | COMP-USDT | $85.65 0.0246669 Eth | $83,246.00 962.700 COMP | 0.1869% |
45 | DeGate | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $86.07 0.0247874 Eth | $78,391.00 906.017 0XC00E94CB662C3520282E6F5717214004A7F26888 | 0.1759% |
46 | Bitget | COMP-USDT | $86.03 0.0247819 Eth | $75,659.00 874.728 COMP | 0.1698% |
47 | LATOKEN | COMP-BTC | $86.44 0.0248922 Eth | $71,529.00 827.471 COMP | 0.1607% |
48 | Tapbit | COMP-USDT | $86.56 0.0248778 Eth | $68,862.00 795.642 COMP | 0.1545% |
49 | BingX | COMP-USDT | $85.99 0.0247704 Eth | $64,575.00 747.036 COMP | 0.1450% |
50 | Binance | COMP-TRY | $86.59 0.0248855 Eth | $64,172.00 749.042 COMP | 0.1454% |
51 | KuCoin | COMP-USDT | $86.07 0.0247855 Eth | $44,579.00 517.966 COMP | 0.1006% |
52 | Kraken | COMP-USD | $86.01 0.0247750 Eth | $42,224.00 490.921 COMP | 0.0953% |
53 | Uniswap V3 (Ethereum) | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $85.16 0.0245257 Eth | $41,542.00 485.346 0XC00E94CB662C3520282E6F5717214004A7F26888 | 0.0942% |
54 | BloFin | COMP-USDT | $86.25 0.0248291 Eth | $39,402.00 455.733 COMP | 0.0885% |
55 | Bitvavo | COMP-EUR | $86.59 0.0249380 Eth | $28,878.00 333.506 COMP | 0.0648% |
56 | LATOKEN | COMP-USDT | $86.04 0.0247728 Eth | $26,319.00 305.882 COMP | 0.0594% |
57 | P2B | COMP-USD | $86.42 0.0249029 Eth | $24,098.00 278.844 COMP | 0.0541% |
58 | Nonkyc.io | COMP-BTC | $85.67 0.0246716 Eth | $24,091.00 276.710 COMP | 0.0537% |
59 | Gemini | COMP-USD | $86.69 0.0249709 Eth | $17,712.94 204.325 COMP | 0.0397% |
60 | Bitstamp | COMP-USD | $86.54 0.0249277 Eth | $15,788.93 182.447 COMP | 0.0354% |
61 | HashKey Global | COMP-USDT | $86.07 0.0247890 Eth | $15,661.49 181.038 COMP | 0.0351% |
62 | Coinbase Exchange | COMP-BTC | $86.33 0.0248633 Eth | $15,093.22 174.823 COMP | 0.0339% |
63 | Koinpark | COMP-USDT | $86.23 0.0248543 Eth | $14,997.71 173.928 COMP | 0.0338% |
64 | Cryptal | COMP-USD | $86.22 0.0248207 Eth | $14,413.82 166.658 COMP | 0.0324% |
65 | QMall | COMP-USDT | $86.24 0.0248307 Eth | $14,389.83 166.665 COMP | 0.0324% |
66 | OKX | COMP-USDC | $86.55 0.0249327 Eth | $14,171.38 163.573 COMP | 0.0318% |
67 | HashKey Exchange | COMP-USD | $86.55 0.0249043 Eth | $10,534.74 121.780 COMP | 0.0236% |
68 | Kraken | COMP-EUR | $86.30 0.0248590 Eth | $10,210.02 118.307 COMP | 0.0230% |
69 | Bit2Me | COMP-EUR | $86.54 0.0248723 Eth | $9,947.48 114.443 COMP | 0.0222% |
70 | Sushiswap | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $86.17 0.0248137 Eth | $8,387.79 97.455 0XC00E94CB662C3520282E6F5717214004A7F26888 | 0.0189% |
71 | Bitkub | COMP-THB | $86.96 0.0250418 Eth | $6,068.95 69.788 COMP | 0.0135% |
72 | bitcastle | COMP-USDT | $86.31 0.0248478 Eth | $5,798.61 67.215 COMP | 0.0130% |
73 | Bitstamp | COMP-EUR | $86.48 0.0249100 Eth | $5,080.35 58.747 COMP | 0.0114% |
74 | Bitlo | COMP-TRY | $86.98 0.0250555 Eth | $5,051.15 58.183 COMP | 0.0113% |
75 | PancakeSwap V1 (BSC) | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $85.90 0.0247313 Eth | $4,629.96 53.695 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0104% |
76 | Kraken | COMP-XBT | $86.06 0.0247902 Eth | $4,347.27 50.513 COMP | 0.0098% |
77 | Uniswap V2 (Ethereum) | 0XC00E94CB662C3520282E6F5717214004A7F26888-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $86.37 0.0248725 Eth | $4,133.42 47.990 0XC00E94CB662C3520282E6F5717214004A7F26888 | 0.0093% |
78 | Crypto.com Exchange | COMP-USD | $86.24 0.0248365 Eth | $3,650.37 42.330 COMP | 0.0082% |
79 | Dex-Trade | COMP-BTC | $86.27 0.0248628 Eth | $3,337.89 38.690 COMP | 0.0075% |
80 | ApeSwap | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $86.14 0.0248121 Eth | $2,393.39 27.660 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0054% |
81 | PancakeSwap (v2) | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $86.22 0.0248244 Eth | $2,305.07 26.968 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0052% |
82 | Bitazza | COMP-THB | $85.71 0.0246319 Eth | $1,828.89 21.046 COMP | 0.0041% |
83 | Bitso | COMP-USD | $86.16 0.0248120 Eth | $1,750.14 20.313 COMP | 0.0039% |
84 | OKX | COMP-EUR | $86.53 0.0249273 Eth | $1,047.39 11.982 COMP | 0.0023% |
85 | HitBTC | COMP-USDT | $86.28 0.0248557 Eth | $808.38 9.312 COMP | 0.0018% |
86 | Bittime | COMP-IDR | $86.94 0.0250742 Eth | $748.48 8.568 COMP | 0.0017% |
87 | Globe | COMP-USDT | $86.27 0.0248528 Eth | $694.26 8.056 COMP | 0.0016% |
88 | PancakeSwap V3 (BSC) | 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $86.33 0.0248671 Eth | $374.76 4.404 0X52CE071BD9B1C4B00A0B92D298C512478CAD67E8 | 0.0009% |
89 | HitBTC | COMP-BTC | $86.46 0.0249042 Eth | $333.84 3.862 COMP | 0.0007% |
90 | FMFW.io | COMP-BTC | $86.39 0.0248837 Eth | $333.67 3.862 COMP | 0.0007% |
91 | WOO X | COMP-USDT | $85.97 0.0247567 Eth | $298.57 3.473 COMP | 0.0007% |
92 | Bitfinex | COMP-USD | $85.91 0.0247457 Eth | $181.89 2.117 COMP | 0.0004% |
93 | Bitfinex | COMP-USDT | $85.94 0.0247537 Eth | $137.58 1.601 COMP | 0.0003% |
94 | Bancor (V2) | COMP-BNT | $91.40 0.0263286 Eth | $111.20 1.217 COMP | 0.0002% |
95 | TokoCrypto | COMP-USDT | $86.11 0.0248334 Eth | $99.04 1.150 COMP | 0.0002% |
96 | CEX.IO | COMP-EUR | $86.54 0.0249303 Eth | $42.67 0.492 COMP | 0.0001% |
97 | CEX.IO | COMP-USDC | $86.50 0.0249339 Eth | $39.51 0.458 COMP | 0.0001% |
98 | CEX.IO | COMP-USD | $86.02 0.0247801 Eth | $29.22 0.339 COMP | 0.0001% |
99 | CEX.IO | COMP-USDT | $86.18 0.0248419 Eth | $19.02 0.221 COMP | 0.0000% |
100 | Coinmetro | COMP-USDT | $86.29 0.0248280 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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