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YUCJ [Yu Coin] Token

About YUCJ

Listings

Token 2 years
CoinGecko 21 months

Website

white paper

Yu Coin is a decentralized, blockchain-powered universal digital currency that aims to usher in the era of using cryptocurrency in financial transactions and certifications in the jade industry instead of cash and paper certification. The concept of using cryptocurrency as a currency has already been known to mankind for years now and the priceless idea is as old as money itself. This familiarity, combined with its amusing concept of digital certification with non-fungible tokens, gives Yu Coin a unique advantage and greater chance of mass adoption despite being new in the cryptocurrency space. At its core, Yu Coin allows people to make financial transactions such as payments and fund transfers without going through a trusted third party or middle man.

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Laser Scorebeta Last Audit: 5 July 2022

report
Token is either risky or in presale. For presale 30+ is a fine score.

TokenRecover.recoverBEP20(address,uint256) (#1279-1281) ignores return value by IBEP20(tokenAddress).transfer(owner(),tokenAmount) (#1280)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link


Contract ownership is not renounced (belongs to a wallet)

BEP20.allowance(address,address).owner (#358) shadows:
- Ownable.owner() (#65-67) (function)
BEP20._approve(address,address,uint256).owner (#485) shadows:
- Ownable.owner() (#65-67) (function)
AmazingBEP20.constructor(string,string,uint8,uint256,address).name (#1323) shadows:
- BEP20.name() (#257-259) (function)
- IBEP20.name() (#114) (function)
AmazingBEP20.constructor(string,string,uint8,uint256,address).symbol (#1324) shadows:
- BEP20.symbol() (#265-267) (function)
- IBEP20.symbol() (#119) (function)
AmazingBEP20.constructor(string,string,uint8,uint256,address).decimals (#1325) shadows:
- BEP20.decimals() (#282-284) (function)
- IBEP20.decimals() (#124) (function)
Rename the local variables that shadow another component.

Additional information: link

Reentrancy in AmazingBEP20.constructor(string,string,uint8,uint256,address) (#1322-1335):
External calls:
- ServicePayer(feeReceiver,AmazingBEP20) (#1330)
- IPayable(receiver).pay{value: msg.value}(serviceName) (#1301)
State variables written after the call(s):
- _mint(_msgSender(),initialBalance) (#1334)
- _balances[account] += amount (#444)
- _setupDecimals(decimals) (#1333)
- _decimals = decimals_ (#501)
- _mint(_msgSender(),initialBalance) (#1334)
- _totalSupply += amount (#443)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in AmazingBEP20.constructor(string,string,uint8,uint256,address) (#1322-1335):
External calls:
- ServicePayer(feeReceiver,AmazingBEP20) (#1330)
- IPayable(receiver).pay{value: msg.value}(serviceName) (#1301)
Event emitted after the call(s):
- Transfer(address(0),account,amount) (#445)
- _mint(_msgSender(),initialBalance) (#1334)
Apply the check-effects-interactions pattern.

Additional information: link

Address.isContract(address) (#819-828) uses assembly
- INLINE ASM (#826)
Address._verifyCallResult(bool,bytes,string) (#964-981) uses assembly
- INLINE ASM (#973-976)
Do not use evm assembly.

Additional information: link

Address._verifyCallResult(bool,bytes,string) (#964-981) is never used and should be removed
Address.functionCall(address,bytes) (#872-874) is never used and should be removed
Address.functionCall(address,bytes,string) (#882-884) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#897-899) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#907-914) is never used and should be removed
Address.functionDelegateCall(address,bytes) (#946-948) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (#956-962) is never used and should be removed
Address.functionStaticCall(address,bytes) (#922-924) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (#932-938) is never used and should be removed
Address.sendValue(address,uint256) (#846-852) is never used and should be removed
Context._msgData() (#24-27) is never used and should be removed
ERC165Checker._supportsERC165Interface(address,bytes4) (#1086-1091) is never used and should be removed
ERC165Checker.getSupportedInterfaces(address,bytes4[]) (#1034-1047) is never used and should be removed
ERC165Checker.supportsAllInterfaces(address,bytes4[]) (#1058-1073) is never used and should be removed
ERC165Checker.supportsERC165(address) (#1005-1010) is never used and should be removed
ERC165Checker.supportsInterface(address,bytes4) (#1018-1022) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.8.0 (#7) allows old versions
Pragma version^0.8.0 (#34) allows old versions
Pragma version^0.8.0 (#104) allows old versions
Pragma version^0.8.0 (#205) allows old versions
Pragma version^0.8.0 (#525) allows old versions
Pragma version^0.8.0 (#592) allows old versions
Pragma version^0.8.0 (#633) allows old versions
Pragma version^0.8.0 (#660) allows old versions
Pragma version^0.8.0 (#737) allows old versions
Pragma version^0.8.0 (#767) allows old versions
Pragma version^0.8.0 (#796) allows old versions
Pragma version^0.8.0 (#988) allows old versions
Pragma version^0.8.0 (#1098) allows old versions
Pragma version^0.8.0 (#1128) allows old versions
Pragma version^0.8.0 (#1264) allows old versions
Pragma version^0.8.0 (#1288) allows old versions
Pragma version^0.8.0 (#1309) allows old versions
solc-0.8.3 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

Low level call in Address.sendValue(address,uint256) (#846-852):
- (success) = recipient.call{value: amount}() (#850)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (#907-914):
- (success,returndata) = target.call{value: value}(data) (#912)
Low level call in Address.functionStaticCall(address,bytes,string) (#932-938):
- (success,returndata) = target.staticcall(data) (#936)
Low level call in Address.functionDelegateCall(address,bytes,string) (#956-962):
- (success,returndata) = target.delegatecall(data) (#960)
Low level call in ERC165Checker._supportsERC165Interface(address,bytes4) (#1086-1091):
- (success,result) = account.staticcall{gas: 30000}(encodedParams) (#1088)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Redundant expression "this (#25)" inContext (#19-28)
Remove redundant statements if they congest code but offer no value.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#84-87)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#93-97)
name() should be declared external:
- BEP20.name() (#257-259)
symbol() should be declared external:
- BEP20.symbol() (#265-267)
decimals() should be declared external:
- BEP20.decimals() (#282-284)
totalSupply() should be declared external:
- BEP20.totalSupply() (#289-291)
balanceOf(address) should be declared external:
- BEP20.balanceOf(address) (#296-298)
getOwner() should be declared external:
- BEP20.getOwner() (#303-305)
increaseAllowance(address,uint256) should be declared external:
- BEP20.increaseAllowance(address,uint256) (#374-377)
decreaseAllowance(address,uint256) should be declared external:
- BEP20.decreaseAllowance(address,uint256) (#393-399)
mintingFinished() should be declared external:
- BEP20Mintable.mintingFinished() (#553-555)
mint(address,uint256) should be declared external:
- BEP20Mintable.mint(address,uint256) (#565-567)
finishMinting() should be declared external:
- BEP20Mintable.finishMinting() (#574-576)
burn(uint256) should be declared external:
- BEP20Burnable.burn(uint256) (#606-608)
burnFrom(address,uint256) should be declared external:
- BEP20Burnable.burnFrom(address,uint256) (#621-626)
transferAndCall(address,uint256) should be declared external:
- BEP20Operable.transferAndCall(address,uint256) (#1157-1159)
transferFromAndCall(address,address,uint256) should be declared external:
- BEP20Operable.transferFromAndCall(address,address,uint256) (#1181-1183)
approveAndCall(address,uint256) should be declared external:
- BEP20Operable.approveAndCall(address,uint256) (#1205-1207)
recoverBEP20(address,uint256) should be declared external:
- TokenRecover.recoverBEP20(address,uint256) (#1279-1281)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


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


Average 30d number of PancakeSwap swaps is low.


Token is deployed only at one blockchain


Unable to find Youtube account


BscScan page for the token does not contain additional info: website, socials, description, etc.

Additional information: link


Unable to find token on CoinMarketCap

Additional information: link


Unable to find token on CoinHunt

Additional information: link


Token is not listed at Mobula.Finance

Additional information: link


Young tokens have high risks of scam / price dump / death


Token has no active CoinGecko listing / rank


Token has no active CoinMarketCap listing / rank


Token has a considerable age, but average PancakeSwap 30d trading volume is low


Young tokens have high risks of price dump / death

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