DOGE [Doge Coin] Token

Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

DogeCoin.addLiquidity(uint256,uint256) (#1043-1056) sends eth to arbitrary user
Dangerous calls:
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
DogeCoin.airdrop(address) (#1443-1456) sends eth to arbitrary user
Dangerous calls:
- address(address(uint160(_refer))).transfer(referEth) (#1452)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in DogeCoin._transfer(address,address,uint256) (#957-988):
External calls:
- swapAndLiquify() (#967)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
External calls sending eth:
- swapAndLiquify() (#967)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
State variables written after the call(s):
- super._transfer(sender,recipient,amount) (#971)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#569)
- _balances[recipient] = _balances[recipient].add(amount) (#570)
- super._transfer(sender,BURN_ADDRESS,burnAmount) (#983)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#569)
- _balances[recipient] = _balances[recipient].add(amount) (#570)
- super._transfer(sender,address(this),liquidityAmount) (#984)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#569)
- _balances[recipient] = _balances[recipient].add(amount) (#570)
- super._transfer(sender,recipient,sendAmount) (#985)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#569)
- _balances[recipient] = _balances[recipient].add(amount) (#570)
Reentrancy in DogeCoin.airdrop(address) (#1443-1456):
External calls:
- _transfer(address(this),_msgSender(),_airdropToken) (#1445)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
- _transfer(address(this),_refer,referToken) (#1448)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
External calls sending eth:
- _transfer(address(this),_msgSender(),_airdropToken) (#1445)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- _transfer(address(this),_refer,referToken) (#1448)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
State variables written after the call(s):
- _transfer(address(this),_refer,referToken) (#1448)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#569)
- _balances[recipient] = _balances[recipient].add(amount) (#570)
- _transfer(address(this),_refer,referToken) (#1448)
- _inSwapAndLiquify = true (#923)
- _inSwapAndLiquify = false (#925)
- _transfer(address(this),_refer,referToken) (#1448)
- transferTaxRate = 0 (#930)
- transferTaxRate = _transferTaxRate (#932)
Reentrancy in DogeCoin.buyIDO(address) (#1458-1474):
External calls:
- _transfer(address(this),_msgSender(),_token) (#1463)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
- _transfer(address(this),_refer,referToken) (#1466)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
External calls sending eth:
- _transfer(address(this),_msgSender(),_token) (#1463)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- _transfer(address(this),_refer,referToken) (#1466)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
State variables written after the call(s):
- _transfer(address(this),_refer,referToken) (#1466)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#569)
- _balances[recipient] = _balances[recipient].add(amount) (#570)
- _transfer(address(this),_refer,referToken) (#1466)
- _inSwapAndLiquify = true (#923)
- _inSwapAndLiquify = false (#925)
- _transfer(address(this),_refer,referToken) (#1466)
- transferTaxRate = 0 (#930)
- transferTaxRate = _transferTaxRate (#932)
Apply the check-effects-interactions pattern.

Additional information: link

DogeCoin._writeCheckpoint(address,uint32,uint256,uint256) (#1358-1376) uses a dangerous strict equality:
- nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber (#1368)
Don't use strict equality to determine if an account has enough Ether or tokens.

Additional information: link

DogeCoin.updateMaxTransferAmountRate(uint16) (#1099-1103) contains a tautology or contradiction:
- require(bool,string)(_maxTransferAmountRate <= 10000000,DOGE::updateMaxTransferAmountRate: Max transfer amount rate must not exceed the maximum rate.) (#1100)
Fix the incorrect comparison by changing the value type or the comparison.

Additional information: link

Combination 1: Reentrancy vulnerabilities + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

DogeCoin._transfer(address,address,uint256) (#957-988) performs a multiplication on the result of a division:
-taxAmount = amount.mul(transferTaxRate).div(10000) (#974)
-burnAmount = taxAmount.mul(burnRate).div(100) (#975)
Consider ordering multiplication before division.

Additional information: link

DogeCoin.addLiquidity(uint256,uint256) (#1043-1056) ignores return value by DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
Ensure that all the return values of the function calls are used.

Additional information: link

BEP20.constructor(string,string).name (#399) shadows:
- BEP20.name() (#415-417) (function)
- IBEP20.name() (#109) (function)
BEP20.constructor(string,string).symbol (#399) shadows:
- BEP20.symbol() (#423-425) (function)
- IBEP20.symbol() (#104) (function)
BEP20.allowance(address,address).owner (#464) shadows:
- Ownable.owner() (#51-53) (function)
BEP20._approve(address,address,uint256).owner (#623) shadows:
- Ownable.owner() (#51-53) (function)
DogeCoin.swapAndLiquify().maxTransferAmount (#993) shadows:
- DogeCoin.maxTransferAmount() (#1061-1063) (function)
Rename the local variables that shadow another component.

Additional information: link

DogeCoin.set(uint8,uint256) (#1413-1441) should emit an event for:
- _referEth = value (#1421)
- _referToken = value (#1423)
- _airdropEth = value (#1425)
- _airdropToken = value (#1427)
- salePrice = value (#1431)
- _airdorpBnb = value (#1434)
- _buyBnb = value (#1436)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in DogeCoin.airdrop(address) (#1443-1456):
External calls:
- _transfer(address(this),_msgSender(),_airdropToken) (#1445)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
- _transfer(address(this),_refer,referToken) (#1448)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
External calls sending eth:
- _transfer(address(this),_msgSender(),_airdropToken) (#1445)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- _transfer(address(this),_refer,referToken) (#1448)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
State variables written after the call(s):
- _transfer(address(this),_refer,referToken) (#1448)
- _allowances[owner][spender] = amount (#627)
Reentrancy in DogeCoin.buyIDO(address) (#1458-1474):
External calls:
- _transfer(address(this),_msgSender(),_token) (#1463)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
- _transfer(address(this),_refer,referToken) (#1466)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
External calls sending eth:
- _transfer(address(this),_msgSender(),_token) (#1463)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- _transfer(address(this),_refer,referToken) (#1466)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
State variables written after the call(s):
- _transfer(address(this),_refer,referToken) (#1466)
- _allowances[owner][spender] = amount (#627)
Reentrancy in DogeCoin.swapAndLiquify() (#991-1021):
External calls:
- swapTokensForEth(half) (#1011)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
- addLiquidity(otherHalf,newBalance) (#1017)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1017)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1017)
- _allowances[owner][spender] = amount (#627)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in DogeCoin._transfer(address,address,uint256) (#957-988):
External calls:
- swapAndLiquify() (#967)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
External calls sending eth:
- swapAndLiquify() (#967)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#571)
- super._transfer(sender,recipient,amount) (#971)
- Transfer(sender,recipient,amount) (#571)
- super._transfer(sender,recipient,sendAmount) (#985)
- Transfer(sender,recipient,amount) (#571)
- super._transfer(sender,address(this),liquidityAmount) (#984)
- Transfer(sender,recipient,amount) (#571)
- super._transfer(sender,BURN_ADDRESS,burnAmount) (#983)
Reentrancy in DogeCoin.airdrop(address) (#1443-1456):
External calls:
- _transfer(address(this),_msgSender(),_airdropToken) (#1445)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
- _transfer(address(this),_refer,referToken) (#1448)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
External calls sending eth:
- _transfer(address(this),_msgSender(),_airdropToken) (#1445)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- _transfer(address(this),_refer,referToken) (#1448)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#628)
- _transfer(address(this),_refer,referToken) (#1448)
- SwapAndLiquify(half,newBalance,otherHalf) (#1019)
- _transfer(address(this),_refer,referToken) (#1448)
- Transfer(sender,recipient,amount) (#571)
- _transfer(address(this),_refer,referToken) (#1448)
Reentrancy in DogeCoin.buyIDO(address) (#1458-1474):
External calls:
- _transfer(address(this),_msgSender(),_token) (#1463)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
- _transfer(address(this),_refer,referToken) (#1466)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
External calls sending eth:
- _transfer(address(this),_msgSender(),_token) (#1463)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
- _transfer(address(this),_refer,referToken) (#1466)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#628)
- _transfer(address(this),_refer,referToken) (#1466)
- SwapAndLiquify(half,newBalance,otherHalf) (#1019)
- _transfer(address(this),_refer,referToken) (#1466)
- Transfer(sender,recipient,amount) (#571)
- _transfer(address(this),_refer,referToken) (#1466)
Reentrancy in DogeCoin.swapAndLiquify() (#991-1021):
External calls:
- swapTokensForEth(half) (#1011)
- DOGERouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1033-1039)
- addLiquidity(otherHalf,newBalance) (#1017)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1017)
- DOGERouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1048-1055)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#628)
- addLiquidity(otherHalf,newBalance) (#1017)
- SwapAndLiquify(half,newBalance,otherHalf) (#1019)
Apply the check-effects-interactions pattern.

Additional information: link

DogeCoin.delegateBySig(address,uint256,uint256,uint8,bytes32,bytes32) (#1224-1265) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now <= expiry,DOGE::delegateBySig: signature expired) (#1263)
Avoid relying on block.timestamp.

Additional information: link

DogeCoin.getChainId() (#1383-1387) uses assembly
- INLINE ASM (#1385)
Do not use evm assembly.

Additional information: link

DogeCoin._transfer(address,address,uint256) (#957-988) compares to a boolean constant:
-swapAndLiquifyEnabled == true && _inSwapAndLiquify == false && address(DOGERouter) != address(0) && DOGEPair != address(0) && sender != DOGEPair && sender != owner() (#960-965)
DogeCoin.antiWhale(address,address,uint256) (#910-920) compares to a boolean constant:
-_excludedFromAntiWhale[sender] == false && _excludedFromAntiWhale[recipient] == false (#913-914)
Remove the equality to the boolean constant.

Additional information: link

Different versions of Solidity is used:
- Version used: ['0.6.12', '>=0.4.0', '>=0.5.0', '>=0.6.0<0.8.0', '>=0.6.2', '>=0.6.4']
- >=0.6.0<0.8.0 (#3)
- >=0.6.0<0.8.0 (#20)
- >=0.6.4 (#88)
- >=0.6.0<0.8.0 (#185)
- >=0.4.0 (#347)
- >=0.6.2 (#645)
- >=0.6.2 (#743)
- >=0.5.0 (#789)
- >=0.5.0 (#844)
- 0.6.12 (#864)
Use one Solidity version.

Additional information: link

BEP20._burn(address,uint256) (#602-608) is never used and should be removed
BEP20._burnFrom(address,uint256) (#637-640) is never used and should be removed
Context._msgData() (#10-13) is never used and should be removed
SafeMath.mod(uint256,uint256) (#321-323) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#337-340) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version>=0.6.0<0.8.0 (#3) is too complex
Pragma version>=0.6.0<0.8.0 (#20) is too complex
Pragma version>=0.6.4 (#88) allows old versions
Pragma version>=0.6.0<0.8.0 (#185) is too complex
Pragma version>=0.4.0 (#347) allows old versions
Pragma version>=0.6.2 (#645) allows old versions
Pragma version>=0.6.2 (#743) allows old versions
Pragma version>=0.5.0 (#789) allows old versions
Pragma version>=0.5.0 (#844) allows old versions
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.

Additional information: link

Variable Ownable._swAuth (#36) is not in mixedCase
Function IUniswapV2Router01.WETH() (#649) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#806) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#807) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#824) is not in mixedCase
Parameter DogeCoin.mint(address,uint256)._to (#951) is not in mixedCase
Parameter DogeCoin.mint(address,uint256)._amount (#951) is not in mixedCase
Parameter DogeCoin.isExcludedFromAntiWhale(address)._account (#1068) is not in mixedCase
Parameter DogeCoin.updateTransferTaxRate(uint16)._transferTaxRate (#1079) is not in mixedCase
Parameter DogeCoin.updateBurnRate(uint16)._burnRate (#1089) is not in mixedCase
Parameter DogeCoin.updateMaxTransferAmountRate(uint16)._maxTransferAmountRate (#1099) is not in mixedCase
Parameter DogeCoin.updateMinAmountToLiquify(uint256)._minAmount (#1109) is not in mixedCase
Parameter DogeCoin.setExcludedFromAntiWhale(address,bool)._account (#1118) is not in mixedCase
Parameter DogeCoin.setExcludedFromAntiWhale(address,bool)._excluded (#1118) is not in mixedCase
Parameter DogeCoin.updateSwapAndLiquifyEnabled(bool)._enabled (#1126) is not in mixedCase
Parameter DogeCoin.updateDOGERouter(address)._router (#1135) is not in mixedCase
Parameter DogeCoin.airdrop(address)._refer (#1443) is not in mixedCase
Parameter DogeCoin.buyIDO(address)._refer (#1458) is not in mixedCase
Variable DogeCoin.DOGERouter (#886) is not in mixedCase
Variable DogeCoin.DOGEPair (#888) is not in mixedCase
Variable DogeCoin._delegates (#1166) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#11)" inContext (#5-14)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#654) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#655)
Prevent variables from having similar names.

Additional information: link

DogeCoin.constructor() (#938-948) uses literals with too many digits:
- _mint(msg.sender,60000000 * 10 ** uint256(decimals())) (#946)
DogeCoin.constructor() (#938-948) uses literals with too many digits:
- _mint(address(this),1940000000 * 10 ** uint256(decimals())) (#947)
DogeCoin.maxTransferAmount() (#1061-1063) uses literals with too many digits:
- totalSupply().mul(maxTransferAmountRate).div(10000000) (#1062)
DogeCoin.updateMaxTransferAmountRate(uint16) (#1099-1103) uses literals with too many digits:
- require(bool,string)(_maxTransferAmountRate <= 10000000,DOGE::updateMaxTransferAmountRate: Max transfer amount rate must not exceed the maximum rate.) (#1100)
DogeCoin.slitherConstructorVariables() (#867-1477) uses literals with too many digits:
- _airdropEth = 400000000000000 (#1394)
DogeCoin.slitherConstructorVariables() (#867-1477) uses literals with too many digits:
- _airdropToken = 400000000000000000000 (#1395)
DogeCoin.slitherConstructorVariables() (#867-1477) uses literals with too many digits:
- salePrice = 1000000 (#1403)
DogeCoin.slitherConstructorConstantVariables() (#867-1477) uses literals with too many digits:
- BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD (#875)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

DogeCoin._auth (#1396) is never used in DogeCoin (#867-1477)
DogeCoin._auth2 (#1397) is never used in DogeCoin (#867-1477)
DogeCoin._authNum (#1398) is never used in DogeCoin (#867-1477)
Remove unused state variables.

Additional information: link

DogeCoin._auth (#1396) should be constant
DogeCoin._auth2 (#1397) should be constant
DogeCoin._authNum (#1398) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#70-73)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#79-83)
symbol() should be declared external:
- BEP20.symbol() (#423-425)
transfer(address,uint256) should be declared external:
- BEP20.transfer(address,uint256) (#456-459)
allowance(address,address) should be declared external:
- BEP20.allowance(address,address) (#464-466)
approve(address,uint256) should be declared external:
- BEP20.approve(address,uint256) (#475-478)
transferFrom(address,address,uint256) should be declared external:
- BEP20.transferFrom(address,address,uint256) (#492-500)
increaseAllowance(address,uint256) should be declared external:
- BEP20.increaseAllowance(address,uint256) (#514-517)
decreaseAllowance(address,uint256) should be declared external:
- BEP20.decreaseAllowance(address,uint256) (#533-536)
mint(uint256) should be declared external:
- BEP20.mint(uint256) (#546-549)
mint(address,uint256) should be declared external:
- DogeCoin.mint(address,uint256) (#951-954)
isExcludedFromAntiWhale(address) should be declared external:
- DogeCoin.isExcludedFromAntiWhale(address) (#1068-1070)
updateTransferTaxRate(uint16) should be declared external:
- DogeCoin.updateTransferTaxRate(uint16) (#1079-1083)
updateBurnRate(uint16) should be declared external:
- DogeCoin.updateBurnRate(uint16) (#1089-1093)
updateMaxTransferAmountRate(uint16) should be declared external:
- DogeCoin.updateMaxTransferAmountRate(uint16) (#1099-1103)
updateMinAmountToLiquify(uint256) should be declared external:
- DogeCoin.updateMinAmountToLiquify(uint256) (#1109-1112)
setExcludedFromAntiWhale(address,bool) should be declared external:
- DogeCoin.setExcludedFromAntiWhale(address,bool) (#1118-1120)
updateSwapAndLiquifyEnabled(bool) should be declared external:
- DogeCoin.updateSwapAndLiquifyEnabled(bool) (#1126-1129)
updateDOGERouter(address) should be declared external:
- DogeCoin.updateDOGERouter(address) (#1135-1140)
transferOperator(address) should be declared external:
- DogeCoin.transferOperator(address) (#1153-1157)
clearAllETH() should be declared external:
- DogeCoin.clearAllETH() (#1406-1409)
set(uint8,uint256) should be declared external:
- DogeCoin.set(uint8,uint256) (#1413-1441)
airdrop(address) should be declared external:
- DogeCoin.airdrop(address) (#1443-1456)
buyIDO(address) should be declared external:
- DogeCoin.buyIDO(address) (#1458-1474)
Use the external attribute for functions never called from the contract.

Additional information: link

Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.

Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find PancakeSwap trading pair to compute liquidity.

Unable to find PancakeSwap trading pair to compute volume.

Unable to find PancakeSwap trading pair to compute number of swaps.

Unable to find website, listings and other project-related information

Young tokens have high risks of scam / price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank