QSC [Quantum Smart Coin] Token

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

Contract ownership is not renounced (belongs to a wallet)

FreezableToken.releaseOnce() (#476-498) has costly operations inside a loop:
- delete freezings[currentKey] (#486)
FreezableToken.releaseOnce() (#476-498) has costly operations inside a loop:
- delete chains[headKey] (#492)
FreezableToken.releaseOnce() (#476-498) has costly operations inside a loop:
- delete chains[currentKey] (#495)
Use a local variable to hold the loop computation result.

Additional information: link

SafeMath.div(uint256,uint256) (#60-65) is never used and should be removed
SafeMath.mul(uint256,uint256) (#44-55) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.4.23 (#19) allows old versions
solc-0.4.26 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 BasicToken.transfer(address,uint256)._to (#110) is not in mixedCase
Parameter BasicToken.transfer(address,uint256)._value (#110) is not in mixedCase
Parameter BasicToken.balanceOf(address)._owner (#125) is not in mixedCase
Parameter StandardToken.transferFrom(address,address,uint256)._from (#169) is not in mixedCase
Parameter StandardToken.transferFrom(address,address,uint256)._to (#170) is not in mixedCase
Parameter StandardToken.transferFrom(address,address,uint256)._value (#171) is not in mixedCase
Parameter StandardToken.approve(address,uint256)._spender (#196) is not in mixedCase
Parameter StandardToken.approve(address,uint256)._value (#196) is not in mixedCase
Parameter StandardToken.allowance(address,address)._owner (#209) is not in mixedCase
Parameter StandardToken.allowance(address,address)._spender (#210) is not in mixedCase
Parameter StandardToken.increaseApproval(address,uint256)._spender (#230) is not in mixedCase
Parameter StandardToken.increaseApproval(address,uint256)._addedValue (#231) is not in mixedCase
Parameter StandardToken.decreaseApproval(address,uint256)._spender (#253) is not in mixedCase
Parameter StandardToken.decreaseApproval(address,uint256)._subtractedValue (#254) is not in mixedCase
Parameter Ownable.transferOwnership(address)._newOwner (#317) is not in mixedCase
Parameter MintableToken.mint(address,uint256)._to (#363) is not in mixedCase
Parameter MintableToken.mint(address,uint256)._amount (#364) is not in mixedCase
Parameter FreezableToken.balanceOf(address)._owner (#406) is not in mixedCase
Parameter FreezableToken.actualBalanceOf(address)._owner (#415) is not in mixedCase
Parameter FreezableToken.freezingBalanceOf(address)._owner (#419) is not in mixedCase
Parameter FreezableToken.freezingCount(address)._addr (#427) is not in mixedCase
Parameter FreezableToken.getFreezing(address,uint256)._addr (#440) is not in mixedCase
Parameter FreezableToken.getFreezing(address,uint256)._index (#440) is not in mixedCase
Parameter FreezableToken.freezeTo(address,uint256,uint64)._to (#458) is not in mixedCase
Parameter FreezableToken.freezeTo(address,uint256,uint64)._amount (#458) is not in mixedCase
Parameter FreezableToken.freezeTo(address,uint256,uint64)._until (#458) is not in mixedCase
Parameter FreezableToken.freeze(address,uint64)._to (#524) is not in mixedCase
Parameter FreezableToken.freeze(address,uint64)._until (#524) is not in mixedCase
Parameter BurnableToken.burn(uint256)._value (#571) is not in mixedCase
Parameter FreezableMintableToken.mintAndFreeze(address,uint256,uint64)._to (#644) is not in mixedCase
Parameter FreezableMintableToken.mintAndFreeze(address,uint256,uint64)._amount (#644) is not in mixedCase
Parameter FreezableMintableToken.mintAndFreeze(address,uint256,uint64)._until (#644) is not in mixedCase
Parameter MainToken.transferFrom(address,address,uint256)._from (#702) is not in mixedCase
Parameter MainToken.transferFrom(address,address,uint256)._to (#702) is not in mixedCase
Parameter MainToken.transferFrom(address,address,uint256)._value (#702) is not in mixedCase
Parameter MainToken.transfer(address,uint256)._to (#707) is not in mixedCase
Parameter MainToken.transfer(address,uint256)._value (#707) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

FreezableToken.toKey(address,uint256) (#515-522) uses literals with too many digits:
- result = 0x5749534800000000000000000000000000000000000000000000000000000000 (#517)
MainToken.init() (#713-740) uses literals with too many digits:
- amounts = (uint256(280000000000000000)) (#723)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

FreezableToken.toKey(address,uint256) (#515-522) is declared view but contains assembly code
Ensure the attributes of contracts compiled prior to Solidity 0.5.0 are correct.

Additional information: link

FreezableToken.releaseOnce() (#476-498) uses timestamp for comparisons
Dangerous comparisons:
- require(bool)(uint64(block.timestamp) > head) (#480)
FreezableToken.releaseAll() (#504-513) uses timestamp for comparisons
Dangerous comparisons:
- release != 0 && block.timestamp > release (#508)
FreezableToken.freeze(address,uint64) (#524-555) uses timestamp for comparisons
Dangerous comparisons:
- require(bool)(_until > block.timestamp) (#525)
Avoid relying on block.timestamp.

Additional information: link

FreezableToken.toKey(address,uint256) (#515-522) uses assembly
- INLINE ASM (#518-522)
Do not use evm assembly.

Additional information: link

totalSupply() should be declared external:
- BEP20Basic.totalSupply() (#27)
- BasicToken.totalSupply() (#101-103)
allowance(address,address) should be declared external:
- BEP20.allowance(address,address) (#136-137)
- StandardToken.allowance(address,address) (#208-217)
approve(address,uint256) should be declared external:
- BEP20.approve(address,uint256) (#142)
- StandardToken.approve(address,uint256) (#196-200)
increaseApproval(address,uint256) should be declared external:
- StandardToken.increaseApproval(address,uint256) (#229-240)
decreaseApproval(address,uint256) should be declared external:
- StandardToken.decreaseApproval(address,uint256) (#252-267)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#308-311)
actualBalanceOf(address) should be declared external:
- FreezableToken.actualBalanceOf(address) (#415-417)
freezingBalanceOf(address) should be declared external:
- FreezableToken.freezingBalanceOf(address) (#419-421)
freezingCount(address) should be declared external:
- FreezableToken.freezingCount(address) (#427-433)
freezeTo(address,uint256,uint64) should be declared external:
- FreezableToken.freezeTo(address,uint256,uint64) (#458-471)
releaseAll() should be declared external:
- FreezableToken.releaseAll() (#504-513)
burn(uint256) should be declared external:
- BurnableToken.burn(uint256) (#571-573)
unpause() should be declared external:
- Pausable.unpause() (#627-630)
name() should be declared external:
- MainToken.name() (#690-692)
symbol() should be declared external:
- MainToken.symbol() (#694-696)
decimals() should be declared external:
- MainToken.decimals() (#698-700)
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.

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

Token is deployed only at one blockchain

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