CENT [21 Century] Token

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

Token is flagged by TokenSniffer due to presence of exploit in contract code

Contract ownership is not renounced (belongs to a wallet)

TokenERC20.constructor() (#75-84) uses literals with too many digits:
- _totalSupply = 1000000000000000 * 10 ** uint256(decimals) (#79)
TokenERC20.constructor() (#75-84) uses literals with too many digits:
- balances[owner] = 300000000000000 * 10 ** uint256(decimals) (#80)
TokenERC20.constructor() (#75-84) uses literals with too many digits:
- balances[address(this)] = 700000000000000 * 10 ** uint256(decimals) (#81)
TokenERC20.constructor() (#75-84) uses literals with too many digits:
- Transfer(address(0),owner,300000000000000 * 10 ** uint256(decimals)) (#82)
TokenERC20.constructor() (#75-84) uses literals with too many digits:
- Transfer(address(0),address(this),700000000000000 * 10 ** uint256(decimals)) (#83)
Century.constructor() (#142-145) uses literals with too many digits:
- startAirdrop(block.number,99999999,1000000 * 10 ** uint256(decimals),2000000000000) (#143)
Century.constructor() (#142-145) uses literals with too many digits:
- startSale(block.number,99999999,0,1500000000 * 10 ** uint256(decimals),10000000000000000) (#144)
Century.getAirdrop(address) (#147-160) uses literals with too many digits:
- msg.sender != _refer && balanceOf(_refer) != 0 && _refer != 0x0000000000000000000000000000000000000000 (#151)
Century.tokenSale(address) (#162-178) uses literals with too many digits:
- msg.sender != _refer && balanceOf(_refer) != 0 && _refer != 0x0000000000000000000000000000000000000000 (#169)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

totalSupply() should be declared external:
- ERC20Interface.totalSupply() (#23)
- TokenERC20.totalSupply() (#86-88)
allowance(address,address) should be declared external:
- ERC20Interface.allowance(address,address) (#25)
- TokenERC20.allowance(address,address) (#110-112)
transfer(address,uint256) should be declared external:
- ERC20Interface.transfer(address,uint256) (#26)
- TokenERC20.transfer(address,uint256) (#92-97)
approve(address,uint256) should be declared external:
- ERC20Interface.approve(address,uint256) (#27)
- TokenERC20.approve(address,uint256) (#98-102)
transferFrom(address,address,uint256) should be declared external:
- ERC20Interface.transferFrom(address,address,uint256) (#28)
- TokenERC20.transferFrom(address,address,uint256) (#103-109)
receiveApproval(address,uint256,address,bytes) should be declared external:
- ApproveAndCallFallBack.receiveApproval(address,uint256,address,bytes) (#35)
transferOwnership(address) should be declared external:
- Owned.transferOwnership(address) (#53-55)
acceptOwnership() should be declared external:
- Owned.acceptOwnership() (#56-61)
approveAndCall(address,uint256,bytes) should be declared external:
- TokenERC20.approveAndCall(address,uint256,bytes) (#113-118)
getAirdrop(address) should be declared external:
- Century.getAirdrop(address) (#147-160)
tokenSale(address) should be declared external:
- Century.tokenSale(address) (#162-178)
viewAirdrop() should be declared external:
- Century.viewAirdrop() (#180-182)
viewSale() should be declared external:
- Century.viewSale() (#183-185)
clearETH() should be declared external:
- Century.clearETH() (#202-205)
Use the external attribute for functions never called from the contract.

Additional information: link

Century.startAirdrop(uint256,uint256,uint256,uint256) (#187-193) should emit an event for:
- aSBlock = _aSBlock (#188)
- aEBlock = _aEBlock (#189)
- aAmt = _aAmt (#190)
- aCap = _aCap (#191)
Century.startSale(uint256,uint256,uint256,uint256,uint256) (#194-201) should emit an event for:
- sSBlock = _sSBlock (#195)
- sEBlock = _sEBlock (#196)
- sChunk = _sChunk (#197)
- sPrice = _sPrice (#198)
- sCap = _sCap (#199)
Emit an event for critical parameter changes.

Additional information: link

Owned.transferOwnership(address)._newOwner (#53) lacks a zero-check on :
- newOwner = _newOwner (#54)
Century.clearETH()._owner (#203) lacks a zero-check on :
- _owner.transfer(address(this).balance) (#204)
Check that the address is not zero.

Additional information: link

SafeMath.div(uint256,uint256) (#16-19) is never used and should be removed
SafeMath.mul(uint256,uint256) (#12-15) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version>=0.5.10 (#1) allows old versions
solc-0.5.10 is not recommended for deployment
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

Parameter Owned.transferOwnership(address)._newOwner (#53) is not in mixedCase
Variable TokenERC20._totalSupply (#70) is not in mixedCase
Parameter Century.getAirdrop(address)._refer (#147) is not in mixedCase
Parameter Century.tokenSale(address)._refer (#162) is not in mixedCase
Parameter Century.startAirdrop(uint256,uint256,uint256,uint256)._aSBlock (#187) is not in mixedCase
Parameter Century.startAirdrop(uint256,uint256,uint256,uint256)._aEBlock (#187) is not in mixedCase
Parameter Century.startAirdrop(uint256,uint256,uint256,uint256)._aAmt (#187) is not in mixedCase
Parameter Century.startAirdrop(uint256,uint256,uint256,uint256)._aCap (#187) is not in mixedCase
Parameter Century.startSale(uint256,uint256,uint256,uint256,uint256)._sSBlock (#194) is not in mixedCase
Parameter Century.startSale(uint256,uint256,uint256,uint256,uint256)._sEBlock (#194) is not in mixedCase
Parameter Century.startSale(uint256,uint256,uint256,uint256,uint256)._sChunk (#194) is not in mixedCase
Parameter Century.startSale(uint256,uint256,uint256,uint256,uint256)._sPrice (#194) is not in mixedCase
Parameter Century.startSale(uint256,uint256,uint256,uint256,uint256)._sCap (#194) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Token seems to be untradeable: there is no PancakeSwap trading pair and no trading volumes. Ignore for presale.

Number of Binance Smart Chain (BSC) token holders is low.

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

Token is marked as scam (rug pull, honeypot, phishing, etc.)

Additional information: link

Young tokens have high risks of price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank