JOIN [JoinCoin] Token
About JOIN
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Do your own research and be careful if you are trading this token.
JoinCoin will set the bar for how a cryptocurrency company and token should operate. We've created a one-of-a-kind auditing system that goes far beyond the code, giving all stakeholders, including investors, contractors, and employees, a public assessment. This project will rid the cryptocurrency space of non-compliant businesses that fail JoinCoin's auditing system, reducing risk to key stakeholders.
The JoinCoin eco-native system's token, $Join, will play a critical role in the platform's development and innovative features.
JoinCoin's world-class auditing system is powered by the PulseReport. Based on our unique "beyond the code" ethos, the report will not only look into the backend of each contract, but will also put the tokens' utility, wallet sizing, and developer commitment to the test, resulting in a true Sentiment rating for projects.
Our token ecosystem is set up to reward holders on a regular basis. We'll start with $Join and then move on to JoinVaults. Holders will be able to stake their $Join tokens and harvest more $Join, as well as receive BNB and BUSD redistributions to our investors, through the vaults.
JoinCoin Jumpstart is our incubator and launchpad that aims to help concept creators bring their blockchain ideas and solutions to life by facilitating and assembling their dream team from the ground up using the JoinCoin platform.
JoinCoinPay is a payment intermediary that guarantees user satisfaction. Consumers will be able to buy gigs listed by talents and vice versa. We'll also include an in-app chat feature to ensure that all parties involved have a safe and simple business transaction. Our system will hold the full amount of $Join required to complete any transaction and only release it to the service provider once the job has been completed satisfactorily. A total of 10 % of both parties' pay rates will be cut and permanently burned.
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Laser Scorebeta Last Audit: 2 March 2022
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JoinCoin.swapBack() (#1147-1193) sends eth to arbitrary user
Dangerous calls:
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in JoinCoin._transfer(address,address,uint256) (#996-1110):
External calls:
- swapBack() (#1062)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1122-1128)
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- (success,None) = address(marketingWallet).call{value: address(this).balance}() (#1192)
External calls sending eth:
- swapBack() (#1062)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- (success,None) = address(marketingWallet).call{value: address(this).balance}() (#1192)
State variables written after the call(s):
- super._transfer(from,address(stakingAddress),fees) (#1079)
- _balances[sender] = senderBalance - amount (#402)
- _balances[recipient] += amount (#404)
- super._transfer(from,address(this),fees) (#1103)
- _balances[sender] = senderBalance - amount (#402)
- _balances[recipient] += amount (#404)
- super._transfer(from,to,amount) (#1109)
- _balances[sender] = senderBalance - amount (#402)
- _balances[recipient] += amount (#404)
- swapping = false (#1064)
- tokensForJumpStart += fees * sellJumpStartFee / sellTotalFees (#1090)
- tokensForJumpStart += fees * buyJumpStartFee / buyTotalFees (#1099)
- tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees (#1086)
- tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees (#1095)
- tokensForMarketing += fees * sellMarketingFee / sellTotalFees (#1087)
- tokensForMarketing += fees * buyMarketingFee / buyTotalFees (#1096)
- tokensForStaking += fees * sellStakingFee / sellTotalFees (#1089)
- tokensForStaking += fees * buyStakingFee / buyTotalFees (#1098)
- tokensForUtility += fees * sellUtilityFee / sellTotalFees (#1088)
- tokensForUtility += fees * buyUtilityFee / buyTotalFees (#1097)
Apply the check-effects-interactions pattern.
Additional information: link
Combination 1: Reentrancy vulnerabilities + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.
JoinCoin._transfer(address,address,uint256) (#996-1110) uses a dangerous strict equality:
- (tradingActiveBlock == block.number || tradingActiveBlock + 1 == block.number) && (automatedMarketMakerPairs[to] || automatedMarketMakerPairs[from]) (#1077)
Don't use strict equality to determine if an account has enough Ether or tokens.
Additional information: link
JoinCoin.swapBack().success (#1150) is written in both
(success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
(success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
JoinCoin.swapBack().success (#1150) is written in both
(success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
(success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
Fix or remove the writes.
Additional information: link
JoinCoin.addLiquidity(uint256,uint256) (#1132-1145) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
Ensure that all the return values of the function calls are used.
Additional information: link
Context._msgData() (#10-13) is never used and should be removed
ERC20._burn(address,uint256) (#443-458) is never used and should be removed
Remove unused functions.
Additional information: link
Pragma version0.8.11 (#3) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.11 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
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * sellTotalFees / 100 (#1085)
-tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees (#1086)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * sellTotalFees / 100 (#1085)
-tokensForMarketing += fees * sellMarketingFee / sellTotalFees (#1087)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * sellTotalFees / 100 (#1085)
-tokensForUtility += fees * sellUtilityFee / sellTotalFees (#1088)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * sellTotalFees / 100 (#1085)
-tokensForStaking += fees * sellStakingFee / sellTotalFees (#1089)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * sellTotalFees / 100 (#1085)
-tokensForJumpStart += fees * sellJumpStartFee / sellTotalFees (#1090)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * buyTotalFees / 100 (#1094)
-tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees (#1095)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * buyTotalFees / 100 (#1094)
-tokensForMarketing += fees * buyMarketingFee / buyTotalFees (#1096)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * buyTotalFees / 100 (#1094)
-tokensForUtility += fees * buyUtilityFee / buyTotalFees (#1097)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * buyTotalFees / 100 (#1094)
-tokensForStaking += fees * buyStakingFee / buyTotalFees (#1098)
JoinCoin._transfer(address,address,uint256) (#996-1110) performs a multiplication on the result of a division:
-fees = amount * buyTotalFees / 100 (#1094)
-tokensForJumpStart += fees * buyJumpStartFee / buyTotalFees (#1099)
Consider ordering multiplication before division.
Additional information: link
Reentrancy in JoinCoin.swapBack() (#1147-1193):
External calls:
- swapTokensForEth(amountToSwapForETH) (#1165)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1122-1128)
State variables written after the call(s):
- tokensForJumpStart = 0 (#1181)
- tokensForLiquidity = 0 (#1177)
- tokensForMarketing = 0 (#1178)
- tokensForStaking = 0 (#1180)
- tokensForUtility = 0 (#1179)
Apply the check-effects-interactions pattern.
Additional information: link
JoinCoin._transfer(address,address,uint256) (#996-1110) uses tx.origin for authorization: require(bool,string)(_holderLastTransferTimestamp[tx.origin] < block.number,_transfer:: Transfer Delay enabled. Only one purchase per block allowed.) (#1031)
Do not use tx.origin for authorization.
Additional information: link
JoinCoin.constructor().totalSupply (#815) shadows:
- ERC20.totalSupply() (#262-264) (function)
- IERC20.totalSupply() (#87) (function)
Rename the local variables that shadow another component.
Additional information: link
JoinCoin.updateSwapTokensAtAmount(uint256) (#904-909) should emit an event for:
- swapTokensAtAmount = newAmount (#907)
JoinCoin.updateMaxAmount(uint256) (#911-914) should emit an event for:
- maxTransactionAmount = newNum (#913)
JoinCoin.updateBuyFees(uint256,uint256,uint256,uint256,uint256) (#925-933) should emit an event for:
- buyMarketingFee = _marketingFee (#926)
- buyLiquidityFee = _liquidityFee (#927)
- buyUtilityFee = _utilityFee (#928)
- buyStakingFee = _stakingFee (#929)
- buyJumpStartFee = _jumpStartFee (#930)
- buyTotalFees = buyMarketingFee + buyLiquidityFee + buyUtilityFee + buyStakingFee + buyJumpStartFee (#931)
JoinCoin.updateSellFees(uint256,uint256,uint256,uint256,uint256) (#935-943) should emit an event for:
- sellMarketingFee = _marketingFee (#936)
- sellLiquidityFee = _liquidityFee (#937)
- sellUtilityFee = _utilityFee (#938)
- sellStakingFee = _stakingFee (#939)
- sellJumpStartFee = _jumpStartFee (#940)
- sellTotalFees = sellMarketingFee + sellLiquidityFee + sellUtilityFee + sellStakingFee + sellJumpStartFee (#941)
Emit an event for critical parameter changes.
Additional information: link
Reentrancy in JoinCoin.constructor() (#794-864):
External calls:
- uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#799)
State variables written after the call(s):
- _createInitialSupply(msg.sender,totalSupply) (#863)
- _balances[account] += amount (#426)
- excludeFromFees(owner(),true) (#841)
- _isExcludedFromFees[account] = excluded (#946)
- excludeFromFees(address(this),true) (#842)
- _isExcludedFromFees[account] = excluded (#946)
- excludeFromFees(address(0xdead),true) (#843)
- _isExcludedFromFees[account] = excluded (#946)
- excludeFromFees(liquidityWallet,true) (#844)
- _isExcludedFromFees[account] = excluded (#946)
- excludeFromFees(jumpStartWallet,true) (#845)
- _isExcludedFromFees[account] = excluded (#946)
- excludeFromFees(stakingAddress,true) (#846)
- _isExcludedFromFees[account] = excluded (#946)
- excludeFromFees(utilityWallet,true) (#847)
- _isExcludedFromFees[account] = excluded (#946)
- excludeFromFees(marketingWallet,true) (#848)
- _isExcludedFromFees[account] = excluded (#946)
- excludeFromMaxTransaction(address(uniswapV2Pair),true) (#800)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- excludeFromMaxTransaction(owner(),true) (#850)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- excludeFromMaxTransaction(address(this),true) (#851)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- excludeFromMaxTransaction(address(0xdead),true) (#852)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- excludeFromMaxTransaction(address(liquidityWallet),true) (#853)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- excludeFromMaxTransaction(jumpStartWallet,true) (#854)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- excludeFromMaxTransaction(stakingAddress,true) (#855)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- excludeFromMaxTransaction(utilityWallet,true) (#856)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- excludeFromMaxTransaction(marketingWallet,true) (#857)
- _isExcludedMaxTransactionAmount[updAds] = isEx (#917)
- _createInitialSupply(msg.sender,totalSupply) (#863)
- _totalSupply += amount (#425)
- _setAutomatedMarketMakerPair(address(uniswapV2Pair),true) (#801)
- automatedMarketMakerPairs[pair] = value (#957)
- buyJumpStartFee = _buyJumpStartFee (#824)
- buyLiquidityFee = _buyLiquidityFee (#821)
- buyMarketingFee = _buyMarketingFee (#820)
- buyStakingFee = _buyStakingFee (#823)
- buyTotalFees = buyMarketingFee + buyLiquidityFee + buyUtilityFee + buyStakingFee + buyJumpStartFee (#825)
- buyUtilityFee = _buyUtilityFee (#822)
- jumpStartWallet = address(0xEE1EF2524aE9f91DCEDC98021f4636711Fe2470c) (#837)
- liquidityWallet = address(0xbF16ff50261150CEd9053396d94bCCd8050EAef3) (#835)
- marketingWallet = address(0x0E61654Eb935D0825EabE36E58ec6cd0D3750Adc) (#834)
- maxTransactionAmount = totalSupply * 1 / 1000 (#817)
- sellJumpStartFee = _sellJumpStartFee (#831)
- sellLiquidityFee = _sellLiquidityFee (#828)
- sellMarketingFee = _sellMarketingFee (#827)
- sellStakingFee = _sellStakingFee (#830)
- sellTotalFees = sellMarketingFee + sellLiquidityFee + sellUtilityFee + sellStakingFee + sellJumpStartFee (#832)
- sellUtilityFee = _sellUtilityFee (#829)
- stakingAddress = address(0x1904dE439c92A4706acfe26657510Bf4944ecEBE) (#836)
- swapTokensAtAmount = totalSupply * 1 / 10000 (#818)
- utilityWallet = address(0x1F63C4EDB45388d314DB4FbC42c0E77FB071Fbba) (#838)
Reentrancy in JoinCoin.swapBack() (#1147-1193):
External calls:
- swapTokensForEth(amountToSwapForETH) (#1165)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1122-1128)
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- addLiquidity(liquidityTokens,ethForLiquidity) (#1188)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
External calls sending eth:
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- addLiquidity(liquidityTokens,ethForLiquidity) (#1188)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
State variables written after the call(s):
- addLiquidity(liquidityTokens,ethForLiquidity) (#1188)
- _allowances[owner][spender] = amount (#481)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in JoinCoin._transfer(address,address,uint256) (#996-1110):
External calls:
- swapBack() (#1062)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1122-1128)
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- (success,None) = address(marketingWallet).call{value: address(this).balance}() (#1192)
External calls sending eth:
- swapBack() (#1062)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- (success,None) = address(marketingWallet).call{value: address(this).balance}() (#1192)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#406)
- super._transfer(from,address(this),fees) (#1103)
- Transfer(sender,recipient,amount) (#406)
- super._transfer(from,address(stakingAddress),fees) (#1079)
- Transfer(sender,recipient,amount) (#406)
- super._transfer(from,to,amount) (#1109)
Reentrancy in JoinCoin.constructor() (#794-864):
External calls:
- uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#799)
Event emitted after the call(s):
- ExcludeFromFees(account,excluded) (#947)
- excludeFromFees(utilityWallet,true) (#847)
- ExcludeFromFees(account,excluded) (#947)
- excludeFromFees(stakingAddress,true) (#846)
- ExcludeFromFees(account,excluded) (#947)
- excludeFromFees(jumpStartWallet,true) (#845)
- ExcludeFromFees(account,excluded) (#947)
- excludeFromFees(marketingWallet,true) (#848)
- ExcludeFromFees(account,excluded) (#947)
- excludeFromFees(owner(),true) (#841)
- ExcludeFromFees(account,excluded) (#947)
- excludeFromFees(liquidityWallet,true) (#844)
- ExcludeFromFees(account,excluded) (#947)
- excludeFromFees(address(0xdead),true) (#843)
- ExcludeFromFees(account,excluded) (#947)
- excludeFromFees(address(this),true) (#842)
- SetAutomatedMarketMakerPair(pair,value) (#959)
- _setAutomatedMarketMakerPair(address(uniswapV2Pair),true) (#801)
- Transfer(address(0),account,amount) (#427)
- _createInitialSupply(msg.sender,totalSupply) (#863)
Reentrancy in JoinCoin.swapBack() (#1147-1193):
External calls:
- swapTokensForEth(amountToSwapForETH) (#1165)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1122-1128)
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- addLiquidity(liquidityTokens,ethForLiquidity) (#1188)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
External calls sending eth:
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- addLiquidity(liquidityTokens,ethForLiquidity) (#1188)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1137-1144)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#482)
- addLiquidity(liquidityTokens,ethForLiquidity) (#1188)
- SwapAndLiquify(amountToSwapForETH,ethForLiquidity,liquidityTokens) (#1189)
Apply the check-effects-interactions pattern.
Additional information: link
Low level call in JoinCoin.swapBack() (#1147-1193):
- (success,None) = address(utilityWallet).call{value: ethForUtility}() (#1183)
- (success,None) = address(stakingAddress).call{value: ethForStaking}() (#1184)
- (success,None) = address(jumpStartWallet).call{value: ethForJumpStart}() (#1185)
- (success,None) = address(marketingWallet).call{value: address(this).balance}() (#1192)
Low level call in JoinCoin.withdrawStuckETH() (#1195-1198):
- (success,None) = address(msg.sender).call{value: address(this).balance}() (#1197)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#31) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#32) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#49) is not in mixedCase
Function IUniswapV2Router01.WETH() (#580) is not in mixedCase
Event JoinCoinmarketingWalletUpdated(address,address) (#778) is not in CapWords
Event JoinCoinliquidityWalletUpdated(address,address) (#780) is not in CapWords
Event JoinCoinstakingWalletUpdated(address,address) (#782) is not in CapWords
Event JoinCoinjumpStartWalletUpdated(address,address) (#784) is not in CapWords
Event JoinCoinutilityWalletUpdated(address,address) (#786) is not in CapWords
Parameter JoinCoin.updateBuyFees(uint256,uint256,uint256,uint256,uint256)._marketingFee (#925) is not in mixedCase
Parameter JoinCoin.updateBuyFees(uint256,uint256,uint256,uint256,uint256)._liquidityFee (#925) is not in mixedCase
Parameter JoinCoin.updateBuyFees(uint256,uint256,uint256,uint256,uint256)._utilityFee (#925) is not in mixedCase
Parameter JoinCoin.updateBuyFees(uint256,uint256,uint256,uint256,uint256)._stakingFee (#925) is not in mixedCase
Parameter JoinCoin.updateBuyFees(uint256,uint256,uint256,uint256,uint256)._jumpStartFee (#925) is not in mixedCase
Parameter JoinCoin.updateSellFees(uint256,uint256,uint256,uint256,uint256)._marketingFee (#935) is not in mixedCase
Parameter JoinCoin.updateSellFees(uint256,uint256,uint256,uint256,uint256)._liquidityFee (#935) is not in mixedCase
Parameter JoinCoin.updateSellFees(uint256,uint256,uint256,uint256,uint256)._utilityFee (#935) is not in mixedCase
Parameter JoinCoin.updateSellFees(uint256,uint256,uint256,uint256,uint256)._stakingFee (#935) is not in mixedCase
Parameter JoinCoin.updateSellFees(uint256,uint256,uint256,uint256,uint256)._jumpStartFee (#935) is not in mixedCase
Constant JoinCoin.deadAddress (#717) is not in UPPER_CASE_WITH_UNDERSCORES
Variable JoinCoin._isExcludedMaxTransactionAmount (#766) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Redundant expression "this (#11)" inContext (#5-14)
Remove redundant statements if they congest code but offer no value.
Additional information: link
Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#585) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#586)
Prevent variables from having similar names.
Additional information: link
JoinCoin.updateSwapTokensAtAmount(uint256) (#904-909) uses literals with too many digits:
- require(bool,string)(newAmount >= totalSupply() * 1 / 100000,Swap amount cannot be lower than 0.001% total supply.) (#905)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
JoinCoin.gasPriceLimit (#735) should be constant
Add the constant attributes to state variables that never change.
Additional information: link
name() should be declared external:
- ERC20.name() (#230-232)
symbol() should be declared external:
- ERC20.symbol() (#238-240)
decimals() should be declared external:
- ERC20.decimals() (#255-257)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#281-284)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#289-291)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#300-303)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#318-332)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#346-349)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#365-373)
enableTrading() should be declared external:
- JoinCoin.enableTrading() (#871-876)
setAutomatedMarketMakerPair(address,bool) should be declared external:
- JoinCoin.setAutomatedMarketMakerPair(address,bool) (#950-954)
isExcludedFromFees(address) should be declared external:
- JoinCoin.isExcludedFromFees(address) (#992-994)
Use the external attribute for functions never called from the contract.
Additional information: link
Token is deployed only at one blockchain
Token has only one trading pair
Contract has 6% buy tax and 10% sell tax.
Taxes are low and contract ownership is renounced.
BscScan page for the token does not contain additional info: website, socials, description, etc.
Additional information: link
Unable to verify token contract address on the website
Unable to find audit link on the website
Unable to find whitepaper link on the website
Unable to find Telegram link on the website
Unable to find Twitter link on the website
Unable to find token on CoinHunt
Additional information: link
Young tokens have high risks of scam / price dump / death
Young tokens have high risks of scam / price dump / death
Young tokens have high risks of scam / 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
Token has relatively low CoinMarketCap rank
Price for JOIN
LASER DESK beta
Telegram account has relatively few subscribers
Unable to find Blog account (Reddit or Medium)
Unable to find Youtube account