MVG [Metaverse GOLD] Token

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

MetaVerseGold.setMaxSellOutNum(uint256) (#220-222) should emit an event for:
- maxSellOutNum = num (#221)
MetaVerseGold.setMaxSellToken(uint256) (#223-225) should emit an event for:
- maxSellToken = num * 1000000000000000 ** uint256(decimals) (#224)
Emit an event for critical parameter changes.

Additional information: link

Address.isContract(address) (#43-48) uses assembly
- INLINE ASM (#46)
Address._functionCallWithValue(address,bytes,uint256,string) (#67-82) uses assembly
- INLINE ASM (#74-77)
Do not use evm assembly.

Additional information: link

MetaVerseGold.transfer(address,uint256) (#112-135) compares to a boolean constant:
-require(bool)(blackLists[from] == false && blackLists[_to] == false) (#117)
MetaVerseGold.transferFrom(address,address,uint256) (#169-196) compares to a boolean constant:
-require(bool)(blackLists[from] == false && blackLists[_to] == false) (#175)
Remove the equality to the boolean constant.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#67-82) is never used and should be removed
Address.functionCall(address,bytes) (#54-56) is never used and should be removed
Address.functionCall(address,bytes,string) (#57-59) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#60-62) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#63-66) is never used and should be removed
Address.sendValue(address,uint256) (#49-53) is never used and should be removed
SafeMath.div(uint256,uint256) (#21-24) is never used and should be removed
SafeMath.mul(uint256,uint256) (#13-20) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.6.0 (#10) 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) (#49-53):
- (success) = recipient.call{value: amount}() (#51)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#67-82):
- (success,returndata) = target.call{value: weiValue}(data) (#69)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Parameter MetaVerseGold.transfer(address,uint256)._to (#112) is not in mixedCase
Parameter MetaVerseGold.transfer(address,uint256)._value (#112) is not in mixedCase
Parameter MetaVerseGold.check(address,address)._to (#136) is not in mixedCase
Parameter MetaVerseGold.balanceOf(address)._owner (#160) is not in mixedCase
Parameter MetaVerseGold.transferFrom(address,address,uint256)._from (#169) is not in mixedCase
Parameter MetaVerseGold.transferFrom(address,address,uint256)._to (#169) is not in mixedCase
Parameter MetaVerseGold.transferFrom(address,address,uint256)._value (#169) is not in mixedCase
Parameter MetaVerseGold.approve(address,uint256)._spender (#203) is not in mixedCase
Parameter MetaVerseGold.approve(address,uint256)._value (#203) is not in mixedCase
Parameter MetaVerseGold.allowance(address,address)._owner (#208) is not in mixedCase
Parameter MetaVerseGold.allowance(address,address)._spender (#208) is not in mixedCase
Function MetaVerseGold.Approve(address,uint256) (#226-228) is not in mixedCase
Parameter MetaVerseGold.Approve(address,uint256)._value (#226) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

MetaVerseGold.check(address,address) (#136-151) uses literals with too many digits:
- maxSellOutNum == 1000000000000000 && maxSellToken == 1000000000000000 (#139)
MetaVerseGold.check(address,address) (#136-151) uses literals with too many digits:
- maxSellOutNum > 1000000000000000 (#142)
MetaVerseGold.check(address,address) (#136-151) uses literals with too many digits:
- maxSellToken > 1000000000000000 (#145)
MetaVerseGold.setMaxSellToken(uint256) (#223-225) uses literals with too many digits:
- maxSellToken = num * 1000000000000000 ** uint256(decimals) (#224)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

MetaVerseGold.poolAddress (#95) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

transfer(address,uint256) should be declared external:
- MetaVerseGold.transfer(address,uint256) (#112-135)
balanceOf(address) should be declared external:
- MetaVerseGold.balanceOf(address) (#160-162)
transferOwnership(address) should be declared external:
- MetaVerseGold.transferOwnership(address) (#163-167)
transferFrom(address,address,uint256) should be declared external:
- MetaVerseGold.transferFrom(address,address,uint256) (#169-196)
approve(address,uint256) should be declared external:
- MetaVerseGold.approve(address,uint256) (#203-207)
allowance(address,address) should be declared external:
- MetaVerseGold.allowance(address,address) (#208-210)
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