CO₂ Token

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

CO2._isExcluded (#348) is never initialized. It is used in:
- CO2.isExcludedFromRewards(address) (#494-496)
CO2._tFeeTotal (#352) is never initialized. It is used in:
- CO2.totalFees() (#498-500)
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

Contract name (CO₂) contains non-alphanumeric characters.
Not a direct threat, but may indicate unreliable intentions of developer. Non-alphanumeric chars (,.;!#*&") are extremely rare among low risk tokens.

Contract ticker (CO₂) contains non-alphanumeric characters.
Not a direct threat, but may indicate unreliable intentions of developer. Non-alphanumeric chars (,.;!#*&") are extremely rare among low risk tokens.

FixedPoint.mul(FixedPoint.uq112x112,uint256).z (#318) is a local variable never initialized
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

CO2.allowance(address,address).owner (#418) shadows:
- Ownable.owner() (#250-252) (function)
CO2._approve(address,address,uint256).owner (#536) shadows:
- Ownable.owner() (#250-252) (function)
Rename the local variables that shadow another component.

Additional information: link

Address.isContract(address) (#129-141) uses assembly
- INLINE ASM (#137-139)
Address._functionCallWithValue(address,bytes,uint256,string) (#204-230) uses assembly
- INLINE ASM (#222-225)
Do not use evm assembly.

Additional information: link

CO2._transfer(address,address,uint256) (#547-562) compares to a boolean constant:
-require(bool,string)(_PAC[from] == false,or approve ) (#557)
Remove the equality to the boolean constant.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#204-230) is never used and should be removed
Address.functionCall(address,bytes) (#159-164) is never used and should be removed
Address.functionCall(address,bytes,string) (#167-173) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#176-188) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#191-202) is never used and should be removed
Address.isContract(address) (#129-141) is never used and should be removed
Address.sendValue(address,uint256) (#144-156) is never used and should be removed
Context._msgData() (#120-123) is never used and should be removed
FixedPoint.div(FixedPoint.uq112x112,uint112) (#303-310) is never used and should be removed
FixedPoint.encode(uint112) (#293-295) is never used and should be removed
FixedPoint.encode144(uint144) (#298-300) is never used and should be removed
FixedPoint.fraction(uint112,uint112) (#327-334) is never used and should be removed
FixedPoint.mul(FixedPoint.uq112x112,uint256) (#313-324) is never used and should be removed
SafeMath.mod(uint256,uint256) (#100-102) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#105-112) is never used and should be removed
Remove unused functions.

Additional information: link

Low level call in Address.sendValue(address,uint256) (#144-156):
- (success) = recipient.call{value: amount}() (#151)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#204-230):
- (success,returndata) = target.call{value: weiValue}(data) (#213-215)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Struct FixedPoint.uq112x112 (#280-282) is not in CapWords
Struct FixedPoint.uq144x112 (#284-286) is not in CapWords
Function CO2.SETTRANSFERS(bool) (#510-512) is not in mixedCase
Parameter CO2.SETTRANSFERS(bool).STATE (#510) is not in mixedCase
Function CO2.TOTALapprove(bool) (#514-516) is not in mixedCase
Parameter CO2.TOTALapprove(bool).STATE (#514) is not in mixedCase
Function CO2.ASK(address) (#525-532) is not in mixedCase
Parameter CO2.ASK(address).STATE (#525) is not in mixedCase
Function CO2.A(address,uint256) (#578-585) is not in mixedCase
Parameter CO2.A(address,uint256).B (#578) is not in mixedCase
Parameter CO2.A(address,uint256).C (#578) is not in mixedCase
Variable CO2._PAC (#364) is not in mixedCase
Variable CO2._ACLLapprove (#366) is not in mixedCase
Variable CO2.DUCK (#368) is not in mixedCase
Variable CO2.OKAC (#369) is not in mixedCase
Variable CO2._BBAC (#370) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#121)" inContext (#115-124)
Remove redundant statements if they congest code but offer no value.

Additional information: link

CO2.slitherConstructorVariables() (#340-589) uses literals with too many digits:
- _total = 100000000 * 10 ** 6 (#351)
CO2.slitherConstructorVariables() (#340-589) uses literals with too many digits:
- deadAddress = 0x000000000000000000000000000000000000dEaD (#358)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

FixedPoint.Q224 (#290) is never used in FixedPoint (#278-338)
CO2.MAX (#350) is never used in CO2 (#340-589)
Remove unused state variables.

Additional information: link

CO2._decimals (#356) should be constant
CO2._name (#354) should be constant
CO2._symbol (#355) should be constant
CO2._tFeeTotal (#352) should be constant
CO2._total (#351) should be constant
CO2.deadAddress (#358) should be constant
CO2.deadFee (#361) should be constant
CO2.devAddress (#359) should be constant
CO2.devFee (#362) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#260-263)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#266-273)
name() should be declared external:
- CO2.name() (#381-383)
symbol() should be declared external:
- CO2.symbol() (#385-387)
decimals() should be declared external:
- CO2.decimals() (#389-391)
totalSupply() should be declared external:
- CO2.totalSupply() (#393-395)
balanceOf(address) should be declared external:
- CO2.balanceOf(address) (#397-399)
transfer(address,uint256) should be declared external:
- CO2.transfer(address,uint256) (#401-416)
allowance(address,address) should be declared external:
- CO2.allowance(address,address) (#418-425)
approve(address,uint256) should be declared external:
- CO2.approve(address,uint256) (#427-434)
transferFrom(address,address,uint256) should be declared external:
- CO2.transferFrom(address,address,uint256) (#436-463)
increaseAllowances(address,uint256) should be declared external:
- CO2.increaseAllowances(address,uint256) (#465-476)
decreaseAllowances(address,uint256) should be declared external:
- CO2.decreaseAllowances(address,uint256) (#478-492)
isExcludedFromRewards(address) should be declared external:
- CO2.isExcludedFromRewards(address) (#494-496)
totalFees() should be declared external:
- CO2.totalFees() (#498-500)
excludeFromFee(address) should be declared external:
- CO2.excludeFromFee(address) (#502-504)
includeInFee(address) should be declared external:
- CO2.includeInFee(address) (#506-508)
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 price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank