MYST [Mystery Crypto] Token

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

MysteryCrypto._setTaxFee(uint256) (#733-736) contains a tautology or contradiction:
- require(bool,string)(taxFee >= 0 && taxFee <= 100,taxFee should be in 0 - 100) (#734)
MysteryCrypto._setNodeManagement(uint256) (#738-741) contains a tautology or contradiction:
- require(bool,string)(burnFee >= 0 && burnFee <= 99,burnFee should be in 0 - 99) (#739)
MysteryCrypto._setMaxTxAmount(uint256) (#743-746) contains a tautology or contradiction:
- require(bool,string)(maxTxAmount >= 0,maxTxAmount should be greater than 0) (#744)
Fix the incorrect comparison by changing the value type or the comparison.

Additional information: link

MysteryCrypto.allowance(address,address).owner (#515) shadows:
- Ownable.owner() (#416-418) (function)
MysteryCrypto._approve(address,address,uint256).owner (#601) shadows:
- Ownable.owner() (#416-418) (function)
MysteryCrypto._getTValues(uint256,uint256,uint256).taxFee (#693) shadows:
- MysteryCrypto.taxFee() (#497-499) (function)
MysteryCrypto._getTValues(uint256,uint256,uint256).burnFee (#693) shadows:
- MysteryCrypto.burnFee() (#501-503) (function)
MysteryCrypto._setTaxFee(uint256).taxFee (#733) shadows:
- MysteryCrypto.taxFee() (#497-499) (function)
MysteryCrypto._setNodeManagement(uint256).burnFee (#738) shadows:
- MysteryCrypto.burnFee() (#501-503) (function)
Rename the local variables that shadow another component.

Additional information: link

MysteryCrypto._setTaxFee(uint256) (#733-736) should emit an event for:
- _taxFee = taxFee (#735)
MysteryCrypto._setNodeManagement(uint256) (#738-741) should emit an event for:
- _burnFee = burnFee (#740)
MysteryCrypto._setMaxTxAmount(uint256) (#743-746) should emit an event for:
- _maxTxAmount = maxTxAmount (#745)
Emit an event for critical parameter changes.

Additional information: link

Address.isContract(address) (#270-279) uses assembly
- INLINE ASM (#277)
Address._functionCallWithValue(address,bytes,uint256,string) (#363-384) uses assembly
- INLINE ASM (#376-379)
Do not use evm assembly.

Additional information: link

MysteryCrypto.includeAccount(address) (#588-599) has costly operations inside a loop:
- _excluded.pop() (#595)
MysteryCrypto._reflectFee(uint256,uint256,uint256,uint256) (#679-684) has costly operations inside a loop:
- _rTotal = _rTotal.sub(rFee).sub(rBurn) (#680)
MysteryCrypto._reflectFee(uint256,uint256,uint256,uint256) (#679-684) has costly operations inside a loop:
- _tFeeTotal = _tFeeTotal.add(tFee) (#681)
MysteryCrypto._reflectFee(uint256,uint256,uint256,uint256) (#679-684) has costly operations inside a loop:
- _tBurnTotal = _tBurnTotal.add(tBurn) (#682)
MysteryCrypto._reflectFee(uint256,uint256,uint256,uint256) (#679-684) has costly operations inside a loop:
- _tTotal = _tTotal.sub(tBurn) (#683)
Use a local variable to hold the loop computation result.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#363-384) is never used and should be removed
Address.functionCall(address,bytes) (#323-325) is never used and should be removed
Address.functionCall(address,bytes,string) (#333-335) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#348-350) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#358-361) is never used and should be removed
Address.isContract(address) (#270-279) is never used and should be removed
Address.sendValue(address,uint256) (#297-303) is never used and should be removed
Context._msgData() (#9-12) is never used and should be removed
MysteryCrypto._getTaxFee() (#725-727) is never used and should be removed
SafeMath.mod(uint256,uint256) (#227-229) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#243-246) is never used and should be removed
Remove unused functions.

Additional information: link

MysteryCrypto._rTotal (#464) is set pre-construction with a non-constant function or state variable:
- (MAX - (MAX % _tTotal))
Remove any initialization of state variables via non-constant state variables or function calls. If variables must be set upon contract deployment, locate initialization in the constructor instead.

Additional information: link

Pragma version^0.6.0 (#1) 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

Low level call in Address.sendValue(address,uint256) (#297-303):
- (success) = recipient.call{value: amount}() (#301)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#363-384):
- (success,returndata) = target.call{value: weiValue}(data) (#367)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function MysteryCrypto._getMaxTxAmount() (#729-731) is not in mixedCase
Function MysteryCrypto._setTaxFee(uint256) (#733-736) is not in mixedCase
Function MysteryCrypto._setNodeManagement(uint256) (#738-741) is not in mixedCase
Function MysteryCrypto._setMaxTxAmount(uint256) (#743-746) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#10)" inContext (#4-13)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable MysteryCrypto._transferBothExcluded(address,address,uint256).rTransferAmount (#669) is too similar to MysteryCrypto._transferBothExcluded(address,address,uint256).tTransferAmount (#669)
Variable MysteryCrypto._getValues(uint256).rTransferAmount (#689) is too similar to MysteryCrypto._transferBothExcluded(address,address,uint256).tTransferAmount (#669)
Variable MysteryCrypto._transferStandard(address,address,uint256).rTransferAmount (#637) is too similar to MysteryCrypto._transferToExcluded(address,address,uint256).tTransferAmount (#647)
Variable MysteryCrypto._getValues(uint256).rTransferAmount (#689) is too similar to MysteryCrypto._getValues(uint256).tTransferAmount (#687)
Variable MysteryCrypto._transferBothExcluded(address,address,uint256).rTransferAmount (#669) is too similar to MysteryCrypto._getValues(uint256).tTransferAmount (#687)
Variable MysteryCrypto._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#704) is too similar to MysteryCrypto._transferBothExcluded(address,address,uint256).tTransferAmount (#669)
Variable MysteryCrypto._transferStandard(address,address,uint256).rTransferAmount (#637) is too similar to MysteryCrypto._transferFromExcluded(address,address,uint256).tTransferAmount (#658)
Variable MysteryCrypto.reflectionFromToken(uint256,bool).rTransferAmount (#567) is too similar to MysteryCrypto._transferToExcluded(address,address,uint256).tTransferAmount (#647)
Variable MysteryCrypto._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#704) is too similar to MysteryCrypto._getValues(uint256).tTransferAmount (#687)
Variable MysteryCrypto._transferToExcluded(address,address,uint256).rTransferAmount (#647) is too similar to MysteryCrypto._transferToExcluded(address,address,uint256).tTransferAmount (#647)
Variable MysteryCrypto._transferFromExcluded(address,address,uint256).rTransferAmount (#658) is too similar to MysteryCrypto._transferBothExcluded(address,address,uint256).tTransferAmount (#669)
Variable MysteryCrypto._transferStandard(address,address,uint256).rTransferAmount (#637) is too similar to MysteryCrypto._transferStandard(address,address,uint256).tTransferAmount (#637)
Variable MysteryCrypto._transferFromExcluded(address,address,uint256).rTransferAmount (#658) is too similar to MysteryCrypto._getValues(uint256).tTransferAmount (#687)
Variable MysteryCrypto._getValues(uint256).rTransferAmount (#689) is too similar to MysteryCrypto._transferToExcluded(address,address,uint256).tTransferAmount (#647)
Variable MysteryCrypto._transferStandard(address,address,uint256).rTransferAmount (#637) is too similar to MysteryCrypto._transferBothExcluded(address,address,uint256).tTransferAmount (#669)
Variable MysteryCrypto._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#704) is too similar to MysteryCrypto._transferToExcluded(address,address,uint256).tTransferAmount (#647)
Variable MysteryCrypto._transferStandard(address,address,uint256).rTransferAmount (#637) is too similar to MysteryCrypto._getValues(uint256).tTransferAmount (#687)
Variable MysteryCrypto._transferFromExcluded(address,address,uint256).rTransferAmount (#658) is too similar to MysteryCrypto._transferToExcluded(address,address,uint256).tTransferAmount (#647)
Variable MysteryCrypto._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#704) is too similar to MysteryCrypto._getTValues(uint256,uint256,uint256).tTransferAmount (#696)
Variable MysteryCrypto._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#704) is too similar to MysteryCrypto._transferFromExcluded(address,address,uint256).tTransferAmount (#658)
Variable MysteryCrypto.reflectionFromToken(uint256,bool).rTransferAmount (#567) is too similar to MysteryCrypto._transferBothExcluded(address,address,uint256).tTransferAmount (#669)
Variable MysteryCrypto._transferFromExcluded(address,address,uint256).rTransferAmount (#658) is too similar to MysteryCrypto._transferFromExcluded(address,address,uint256).tTransferAmount (#658)
Variable MysteryCrypto._transferToExcluded(address,address,uint256).rTransferAmount (#647) is too similar to MysteryCrypto._transferBothExcluded(address,address,uint256).tTransferAmount (#669)
Variable MysteryCrypto._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#704) is too similar to MysteryCrypto._transferStandard(address,address,uint256).tTransferAmount (#637)
Variable MysteryCrypto._transferToExcluded(address,address,uint256).rTransferAmount (#647) is too similar to MysteryCrypto._getValues(uint256).tTransferAmount (#687)
Variable MysteryCrypto.reflectionFromToken(uint256,bool).rTransferAmount (#567) is too similar to MysteryCrypto._getValues(uint256).tTransferAmount (#687)
Variable MysteryCrypto.reflectionFromToken(uint256,bool).rTransferAmount (#567) is too similar to MysteryCrypto._transferFromExcluded(address,address,uint256).tTransferAmount (#658)
Variable MysteryCrypto._transferBothExcluded(address,address,uint256).rTransferAmount (#669) is too similar to MysteryCrypto._transferToExcluded(address,address,uint256).tTransferAmount (#647)
Variable MysteryCrypto._transferToExcluded(address,address,uint256).rTransferAmount (#647) is too similar to MysteryCrypto._transferStandard(address,address,uint256).tTransferAmount (#637)
Variable MysteryCrypto._transferFromExcluded(address,address,uint256).rTransferAmount (#658) is too similar to MysteryCrypto._transferStandard(address,address,uint256).tTransferAmount (#637)
Variable MysteryCrypto._getValues(uint256).rTransferAmount (#689) is too similar to MysteryCrypto._transferFromExcluded(address,address,uint256).tTransferAmount (#658)
Variable MysteryCrypto._transferToExcluded(address,address,uint256).rTransferAmount (#647) is too similar to MysteryCrypto._getTValues(uint256,uint256,uint256).tTransferAmount (#696)
Variable MysteryCrypto._transferBothExcluded(address,address,uint256).rTransferAmount (#669) is too similar to MysteryCrypto._transferFromExcluded(address,address,uint256).tTransferAmount (#658)
Variable MysteryCrypto.reflectionFromToken(uint256,bool).rTransferAmount (#567) is too similar to MysteryCrypto._transferStandard(address,address,uint256).tTransferAmount (#637)
Variable MysteryCrypto._transferFromExcluded(address,address,uint256).rTransferAmount (#658) is too similar to MysteryCrypto._getTValues(uint256,uint256,uint256).tTransferAmount (#696)
Variable MysteryCrypto.reflectionFromToken(uint256,bool).rTransferAmount (#567) is too similar to MysteryCrypto._getTValues(uint256,uint256,uint256).tTransferAmount (#696)
Variable MysteryCrypto._getValues(uint256).rTransferAmount (#689) is too similar to MysteryCrypto._transferStandard(address,address,uint256).tTransferAmount (#637)
Variable MysteryCrypto._transferStandard(address,address,uint256).rTransferAmount (#637) is too similar to MysteryCrypto._getTValues(uint256,uint256,uint256).tTransferAmount (#696)
Variable MysteryCrypto._transferBothExcluded(address,address,uint256).rTransferAmount (#669) is too similar to MysteryCrypto._transferStandard(address,address,uint256).tTransferAmount (#637)
Variable MysteryCrypto._transferToExcluded(address,address,uint256).rTransferAmount (#647) is too similar to MysteryCrypto._transferFromExcluded(address,address,uint256).tTransferAmount (#658)
Variable MysteryCrypto._getValues(uint256).rTransferAmount (#689) is too similar to MysteryCrypto._getTValues(uint256,uint256,uint256).tTransferAmount (#696)
Variable MysteryCrypto._transferBothExcluded(address,address,uint256).rTransferAmount (#669) is too similar to MysteryCrypto._getTValues(uint256,uint256,uint256).tTransferAmount (#696)
Prevent variables from having similar names.

Additional information: link

MysteryCrypto._decimals (#470) should be constant
MysteryCrypto._name (#468) should be constant
MysteryCrypto._symbol (#469) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#435-438)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#444-448)
name() should be declared external:
- MysteryCrypto.name() (#481-483)
symbol() should be declared external:
- MysteryCrypto.symbol() (#485-487)
decimals() should be declared external:
- MysteryCrypto.decimals() (#489-491)
totalSupply() should be declared external:
- MysteryCrypto.totalSupply() (#493-495)
taxFee() should be declared external:
- MysteryCrypto.taxFee() (#497-499)
burnFee() should be declared external:
- MysteryCrypto.burnFee() (#501-503)
balanceOf(address) should be declared external:
- MysteryCrypto.balanceOf(address) (#505-508)
allowance(address,address) should be declared external:
- MysteryCrypto.allowance(address,address) (#515-517)
approve(address,uint256) should be declared external:
- MysteryCrypto.approve(address,uint256) (#519-522)
transferFrom(address,address,uint256) should be declared external:
- MysteryCrypto.transferFrom(address,address,uint256) (#524-528)
increaseAllowance(address,uint256) should be declared external:
- MysteryCrypto.increaseAllowance(address,uint256) (#530-533)
decreaseAllowance(address,uint256) should be declared external:
- MysteryCrypto.decreaseAllowance(address,uint256) (#535-538)
isExcluded(address) should be declared external:
- MysteryCrypto.isExcluded(address) (#540-542)
totalFees() should be declared external:
- MysteryCrypto.totalFees() (#544-546)
totalBurn() should be declared external:
- MysteryCrypto.totalBurn() (#548-550)
deliver(uint256) should be declared external:
- MysteryCrypto.deliver(uint256) (#552-559)
reflectionFromToken(uint256,bool) should be declared external:
- MysteryCrypto.reflectionFromToken(uint256,bool) (#561-570)
multiTransfer(address[],uint256[]) should be declared external:
- MysteryCrypto.multiTransfer(address[],uint256[]) (#630-633)
_getMaxTxAmount() should be declared external:
- MysteryCrypto._getMaxTxAmount() (#729-731)
Use the external attribute for functions never called from the contract.

Additional information: link

Average 30d PancakeSwap liquidity is less than $100. Token is either dead or inactive.

Average 30d PancakeSwap volume is less than $100. Token is either dead or inactive.

Average 30d number of PancakeSwap swaps is less than 1. Token is either dead or inactive.

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

Contract has 11% buy tax and 3% sell tax.
Taxes are high (over 10%) but contract ownership is renounced.

Token is deployed only at one blockchain

Token has only one trading pair

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