The VikiShop project is about developing a single system in which anyone can shop without converting their cryptocurrency to fiat.
Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
Contract ownership is not renounced (belongs to a wallet)
ECDSA.tryRecover(bytes32,bytes) (#174-203) uses assembly
- INLINE ASM (#184-188)
- INLINE ASM (#195-198)
ECDSA.tryRecover(bytes32,bytes32,bytes32) (#232-244) uses assembly
- INLINE ASM (#239-242)
Do not use evm assembly.
Additional information: link
ERC20Permit.permit(address,address,uint256,uint256,uint8,bytes32,bytes32) (#1234-1253) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp <= deadline,ERC20Permit: expired deadline) (#1243)
Avoid relying on block.timestamp.
Additional information: link
Variable EIP712._CACHED_DOMAIN_SEPARATOR (#384) is not in mixedCase
Variable EIP712._CACHED_CHAIN_ID (#385) is not in mixedCase
Variable EIP712._CACHED_THIS (#386) is not in mixedCase
Variable EIP712._HASHED_NAME (#388) is not in mixedCase
Variable EIP712._HASHED_VERSION (#389) is not in mixedCase
Variable EIP712._TYPE_HASH (#390) is not in mixedCase
Function IERC20Permit.DOMAIN_SEPARATOR() (#519) is not in mixedCase
Function ERC20Permit.DOMAIN_SEPARATOR() (#1266-1268) is not in mixedCase
Variable ERC20Permit._PERMIT_TYPEHASH (#1221-1222) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
ERC20Permit.constructor(string).name (#1229) shadows:
- ERC20.name() (#897-899) (function)
- IERC20Metadata.name() (#822) (function)
Rename the local variables that shadow another component.
Additional information: link
Variable 'ECDSA.tryRecover(bytes32,bytes).r (#179)' in ECDSA.tryRecover(bytes32,bytes) (#174-203) potentially used before declaration: r = mload(uint256)(signature + 0x20) (#196)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.
Additional information: link
Different versions of Solidity is used:
- Version used: ['^0.8.0', '^0.8.2']
- ^0.8.0 (#6)
- ^0.8.0 (#52)
- ^0.8.0 (#122)
- ^0.8.0 (#358)
- ^0.8.0 (#464)
- ^0.8.0 (#527)
- ^0.8.0 (#554)
- ^0.8.0 (#632)
- ^0.8.0 (#725)
- ^0.8.0 (#810)
- ^0.8.0 (#840)
- ^0.8.0 (#1198)
- ^0.8.0 (#1287)
- ^0.8.2 (#1330)
Use one Solidity version.
Additional information: link
VikiCoin.constructor() (#1339-1341) uses literals with too many digits:
- _mint(msg.sender,1000000000000 * 10 ** decimals()) (#1340)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
Context._msgData() (#544-546) is never used and should be removed
Counters.decrement(Counters.Counter) (#34-40) is never used and should be removed
Counters.reset(Counters.Counter) (#42-44) is never used and should be removed
ECDSA.recover(bytes32,bytes) (#219-223) is never used and should be removed
ECDSA.recover(bytes32,bytes32,bytes32) (#251-259) is never used and should be removed
ECDSA.toEthSignedMessageHash(bytes) (#335-337) is never used and should be removed
ECDSA.toEthSignedMessageHash(bytes32) (#321-325) is never used and should be removed
ECDSA.tryRecover(bytes32,bytes) (#174-203) is never used and should be removed
ECDSA.tryRecover(bytes32,bytes32,bytes32) (#232-244) is never used and should be removed
Strings.toHexString(uint256) (#88-99) is never used and should be removed
Strings.toHexString(uint256,uint256) (#104-114) is never used and should be removed
Strings.toString(uint256) (#63-83) is never used and should be removed
Remove unused functions.
Additional information: link
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#603-605)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#611-614)
name() should be declared external:
- ERC20.name() (#897-899)
symbol() should be declared external:
- ERC20.symbol() (#905-907)
totalSupply() should be declared external:
- ERC20.totalSupply() (#929-931)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (#936-938)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#948-951)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#967-970)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#985-999)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#1013-1016)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#1032-1040)
permit(address,address,uint256,uint256,uint8,bytes32,bytes32) should be declared external:
- ERC20Permit.permit(address,address,uint256,uint256,uint8,bytes32,bytes32) (#1234-1253)
nonces(address) should be declared external:
- ERC20Permit.nonces(address) (#1258-1260)
burn(uint256) should be declared external:
- ERC20Burnable.burn(uint256) (#1302-1304)
burnFrom(address,uint256) should be declared external:
- ERC20Burnable.burnFrom(address,uint256) (#1317-1324)
pause() should be declared external:
- VikiCoin.pause() (#1343-1345)
unpause() should be declared external:
- VikiCoin.unpause() (#1347-1349)
mint(address,uint256) should be declared external:
- VikiCoin.mint(address,uint256) (#1351-1353)
Use the external attribute for functions never called from the contract.
Additional information: link
Pragma version^0.8.0 (#6) allows old versions
Pragma version^0.8.0 (#52) allows old versions
Pragma version^0.8.0 (#122) allows old versions
Pragma version^0.8.0 (#358) allows old versions
Pragma version^0.8.0 (#464) allows old versions
Pragma version^0.8.0 (#527) allows old versions
Pragma version^0.8.0 (#554) allows old versions
Pragma version^0.8.0 (#632) allows old versions
Pragma version^0.8.0 (#725) allows old versions
Pragma version^0.8.0 (#810) allows old versions
Pragma version^0.8.0 (#840) allows old versions
Pragma version^0.8.0 (#1198) allows old versions
Pragma version^0.8.0 (#1287) allows old versions
Pragma version^0.8.2 (#1330) 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
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.
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 token on CoinGecko
Additional information: link
Unable to find token on CoinMarketCap
Additional information: link
Unable to find token contract audit
Unable to find audit link on the website
Unable to find whitepaper link on the website
Unable to find token on CoinHunt
Additional information: link
Unable to find code repository for the project
Alexa traffic rank is very low
Additional information: link
Token has no active CoinMarketCap listing / rank
Young tokens have high risks of price dump / death
Young tokens have high risks of scam / price dump / death
Token has no active CoinGecko listing / rank
Young tokens have high risks of price dump / death
Telegram account link seems to be invalid
Last post in Twitter was more than 30 days ago
Unable to find Blog account (Reddit or Medium)
Unable to find Discord account