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Laser Scorebeta Last Audit: 17 February 2022

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Code:


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

Reentrancy in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322):
External calls:
- swapAndSendToFee(marketingTokens) (bitcoin.sol#278)
- IERC20(DOGE).transfer(_marketingWalletAddress,marketBalance) (bitcoin.sol#332)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
- IERC20(DOGE).transfer(_buyBackWalletAddress,buyBackBalance) (bitcoin.sol#333)
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#371-377)
- swapAndSendDividends(sellTokens) (bitcoin.sol#284)
- success = IERC20(DOGE).transfer(address(dividendTracker),dividends) (bitcoin.sol#420)
- dividendTracker.distributeDOGEDividends(dividends) (bitcoin.sol#423)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
External calls sending eth:
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
State variables written after the call(s):
- super._transfer(from,address(this),fees) (bitcoin.sol#304)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (ERC20.sol#221)
- _balances[recipient] = _balances[recipient].add(amount) (ERC20.sol#222)
- super._transfer(from,to,amount) (bitcoin.sol#307)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (ERC20.sol#221)
- _balances[recipient] = _balances[recipient].add(amount) (ERC20.sol#222)
- swapping = false (bitcoin.sol#286)
Apply the check-effects-interactions pattern.

Additional information: link

bitcoin.swapAndSendToFee(uint256) (bitcoin.sol#324-334) ignores return value by IERC20(DOGE).transfer(_marketingWalletAddress,marketBalance) (bitcoin.sol#332)
bitcoin.swapAndSendToFee(uint256) (bitcoin.sol#324-334) ignores return value by IERC20(DOGE).transfer(_buyBackWalletAddress,buyBackBalance) (bitcoin.sol#333)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link


Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.


Not a direct threat, but may indicate unreliable intentions of developer. Widespread names (e.g. Elon, King, Moon, Doge) are common among meme-tokens and scams. The allow to gain free hype and attract unexperienced investors.


Not a direct threat, but may indicate unreliable intentions of developer. Both name and ticker of current token are widespread, i.e. common across multiple tokens. This is slightly suspicious

bitcoin.DOGERewardsFee (bitcoin.sol#31) should be constant
bitcoin._buyBackWalletAddress (bitcoin.sol#39) should be constant
bitcoin._marketingWalletAddress (bitcoin.sol#38) should be constant
bitcoin.burnFee (bitcoin.sol#34) should be constant
bitcoin.buyBackFee (bitcoin.sol#35) should be constant
bitcoin.deadWallet (bitcoin.sol#25) should be constant
bitcoin.gasForProcessing (bitcoin.sol#42) should be constant
bitcoin.liquidityFee (bitcoin.sol#32) should be constant
bitcoin.marketingFee (bitcoin.sol#33) should be constant
bitcoin.swapTokensAtAmount (bitcoin.sol#29) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

Reentrancy in DividendPayingToken._withdrawDividendOfUser(address) (DividendPayingToken.sol#76-92):
External calls:
- success = IERC20(DOGE).transfer(user,_withdrawableDividend) (DividendPayingToken.sol#81)
State variables written after the call(s):
- withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend) (DividendPayingToken.sol#84)
Reentrancy in bitcoin.updateDividendTracker(address) (bitcoin.sol#134-149):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (bitcoin.sol#141)
- newDividendTracker.excludeFromDividends(address(this)) (bitcoin.sol#142)
- newDividendTracker.excludeFromDividends(owner()) (bitcoin.sol#143)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (bitcoin.sol#144)
State variables written after the call(s):
- dividendTracker = newDividendTracker (bitcoin.sol#148)
Apply the check-effects-interactions pattern.

Additional information: link

bitcoin._transfer(address,address,uint256).iterations (bitcoin.sol#315) is a local variable never initialized
bitcoin._transfer(address,address,uint256).claims (bitcoin.sol#315) is a local variable never initialized
bitcoin._transfer(address,address,uint256).lastProcessedIndex (bitcoin.sol#315) is a local variable never initialized
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

bitcoin.claim() (bitcoin.sol#232-234) ignores return value by dividendTracker.processAccount(msg.sender,false) (bitcoin.sol#233)
bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322) ignores return value by dividendTracker.process(gas) (bitcoin.sol#315-320)
bitcoin.addLiquidity(uint256,uint256) (bitcoin.sol#400-415) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
Ensure that all the return values of the function calls are used.

Additional information: link

DividendPayingToken.constructor(string,string)._name (DividendPayingToken.sol#50) shadows:
- ERC20._name (ERC20.sol#43) (state variable)
DividendPayingToken.constructor(string,string)._symbol (DividendPayingToken.sol#50) shadows:
- ERC20._symbol (ERC20.sol#44) (state variable)
DividendPayingToken.dividendOf(address)._owner (DividendPayingToken.sol#98) shadows:
- Ownable._owner (Ownable.sol#8) (state variable)
DividendPayingToken.withdrawableDividendOf(address)._owner (DividendPayingToken.sol#105) shadows:
- Ownable._owner (Ownable.sol#8) (state variable)
DividendPayingToken.withdrawnDividendOf(address)._owner (DividendPayingToken.sol#112) shadows:
- Ownable._owner (Ownable.sol#8) (state variable)
DividendPayingToken.accumulativeDividendOf(address)._owner (DividendPayingToken.sol#122) shadows:
- Ownable._owner (Ownable.sol#8) (state variable)
Rename the local variables that shadow another component.

Additional information: link

DividendPayingToken._withdrawDividendOfUser(address) (DividendPayingToken.sol#76-92) has external calls inside a loop: success = IERC20(DOGE).transfer(user,_withdrawableDividend) (DividendPayingToken.sol#81)
Favor pull over push strategy for external calls.

Additional information: link

Variable 'bitcoin._transfer(address,address,uint256).iterations (bitcoin.sol#315)' in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (bitcoin.sol#316)
Variable 'bitcoin._transfer(address,address,uint256).lastProcessedIndex (bitcoin.sol#315)' in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (bitcoin.sol#316)
Variable 'bitcoin._transfer(address,address,uint256).claims (bitcoin.sol#315)' in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (bitcoin.sol#316)
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

Reentrancy in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322):
External calls:
- swapAndSendToFee(marketingTokens) (bitcoin.sol#278)
- IERC20(DOGE).transfer(_marketingWalletAddress,marketBalance) (bitcoin.sol#332)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
- IERC20(DOGE).transfer(_buyBackWalletAddress,buyBackBalance) (bitcoin.sol#333)
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#371-377)
External calls sending eth:
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
State variables written after the call(s):
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- _allowances[owner][spender] = amount (ERC20.sol#287)
Reentrancy in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322):
External calls:
- swapAndSendToFee(marketingTokens) (bitcoin.sol#278)
- IERC20(DOGE).transfer(_marketingWalletAddress,marketBalance) (bitcoin.sol#332)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
- IERC20(DOGE).transfer(_buyBackWalletAddress,buyBackBalance) (bitcoin.sol#333)
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#371-377)
- swapAndSendDividends(sellTokens) (bitcoin.sol#284)
- success = IERC20(DOGE).transfer(address(dividendTracker),dividends) (bitcoin.sol#420)
- dividendTracker.distributeDOGEDividends(dividends) (bitcoin.sol#423)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
External calls sending eth:
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
State variables written after the call(s):
- swapAndSendDividends(sellTokens) (bitcoin.sol#284)
- _allowances[owner][spender] = amount (ERC20.sol#287)
Reentrancy in bitcoin.constructor() (bitcoin.sol#86-128):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (bitcoin.sol#93-94)
State variables written after the call(s):
- uniswapV2Pair = _uniswapV2Pair (bitcoin.sol#97)
- uniswapV2Router = _uniswapV2Router (bitcoin.sol#96)
Reentrancy in bitcoin.constructor() (bitcoin.sol#86-128):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (bitcoin.sol#93-94)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (bitcoin.sol#99)
- dividendTracker.excludeFromDividends(pair) (bitcoin.sol#170)
- dividendTracker.excludeFromDividends(address(dividendTracker)) (bitcoin.sol#102)
- dividendTracker.excludeFromDividends(address(this)) (bitcoin.sol#103)
- dividendTracker.excludeFromDividends(owner()) (bitcoin.sol#104)
- dividendTracker.excludeFromDividends(deadWallet) (bitcoin.sol#105)
- dividendTracker.excludeFromDividends(address(_uniswapV2Router)) (bitcoin.sol#106)
State variables written after the call(s):
- _mint(owner(),1000000000000000 * (10 ** 18)) (bitcoin.sol#127)
- _balances[account] = _balances[account].add(amount) (ERC20.sol#241)
- excludeFromFees(owner(),true) (bitcoin.sol#109)
- _isExcludedFromFees[account] = excluded (bitcoin.sol#153)
- excludeFromFees(_marketingWalletAddress,true) (bitcoin.sol#110)
- _isExcludedFromFees[account] = excluded (bitcoin.sol#153)
- excludeFromFees(address(this),true) (bitcoin.sol#111)
- _isExcludedFromFees[account] = excluded (bitcoin.sol#153)
- excludeFromFees(_buyBackWalletAddress,true) (bitcoin.sol#112)
- _isExcludedFromFees[account] = excluded (bitcoin.sol#153)
- _isExcludedFromRestrict[owner()] = true (bitcoin.sol#114)
- _isExcludedFromRestrict[_marketingWalletAddress] = true (bitcoin.sol#115)
- _isExcludedFromRestrict[address(this)] = true (bitcoin.sol#116)
- _isExcludedFromRestrict[_buyBackWalletAddress] = true (bitcoin.sol#117)
- _isExcludedFromRestrict[deadWallet] = true (bitcoin.sol#118)
- _isExcludedFromRestrict[address(_uniswapV2Router)] = true (bitcoin.sol#119)
- _isExcludedFromRestrict[address(uniswapV2Pair)] = true (bitcoin.sol#120)
- _isExcludedFromRestrict[address(dividendTracker)] = true (bitcoin.sol#121)
- _mint(owner(),1000000000000000 * (10 ** 18)) (bitcoin.sol#127)
- _totalSupply = _totalSupply.add(amount) (ERC20.sol#240)
Reentrancy in bitcoinDividendTracker.processAccount(address,bool) (bitcoin.sol#616-626):
External calls:
- amount = _withdrawDividendOfUser(account) (bitcoin.sol#617)
- success = IERC20(DOGE).transfer(user,_withdrawableDividend) (DividendPayingToken.sol#81)
State variables written after the call(s):
- lastClaimTimes[account] = block.timestamp (bitcoin.sol#620)
Reentrancy in bitcoin.swapAndLiquify(uint256) (bitcoin.sol#336-357):
External calls:
- swapTokensForEth(half) (bitcoin.sol#348)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#371-377)
- addLiquidity(otherHalf,newBalance) (bitcoin.sol#354)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (bitcoin.sol#354)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (bitcoin.sol#354)
- _allowances[owner][spender] = amount (ERC20.sol#287)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in bitcoin._setAutomatedMarketMakerPair(address,bool) (bitcoin.sol#165-174):
External calls:
- dividendTracker.excludeFromDividends(pair) (bitcoin.sol#170)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (bitcoin.sol#173)
Reentrancy in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322):
External calls:
- swapAndSendToFee(marketingTokens) (bitcoin.sol#278)
- IERC20(DOGE).transfer(_marketingWalletAddress,marketBalance) (bitcoin.sol#332)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
- IERC20(DOGE).transfer(_buyBackWalletAddress,buyBackBalance) (bitcoin.sol#333)
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#371-377)
External calls sending eth:
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
Event emitted after the call(s):
- Approval(owner,spender,amount) (ERC20.sol#288)
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- SwapAndLiquify(half,newBalance,otherHalf) (bitcoin.sol#356)
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
Reentrancy in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322):
External calls:
- swapAndSendToFee(marketingTokens) (bitcoin.sol#278)
- IERC20(DOGE).transfer(_marketingWalletAddress,marketBalance) (bitcoin.sol#332)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
- IERC20(DOGE).transfer(_buyBackWalletAddress,buyBackBalance) (bitcoin.sol#333)
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#371-377)
- swapAndSendDividends(sellTokens) (bitcoin.sol#284)
- success = IERC20(DOGE).transfer(address(dividendTracker),dividends) (bitcoin.sol#420)
- dividendTracker.distributeDOGEDividends(dividends) (bitcoin.sol#423)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
External calls sending eth:
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
Event emitted after the call(s):
- Approval(owner,spender,amount) (ERC20.sol#288)
- swapAndSendDividends(sellTokens) (bitcoin.sol#284)
- SendDividends(tokens,dividends) (bitcoin.sol#424)
- swapAndSendDividends(sellTokens) (bitcoin.sol#284)
- Transfer(sender,recipient,amount) (ERC20.sol#223)
- super._transfer(from,address(this),fees) (bitcoin.sol#304)
- Transfer(sender,recipient,amount) (ERC20.sol#223)
- super._transfer(from,to,amount) (bitcoin.sol#307)
Reentrancy in bitcoin._transfer(address,address,uint256) (bitcoin.sol#245-322):
External calls:
- swapAndSendToFee(marketingTokens) (bitcoin.sol#278)
- IERC20(DOGE).transfer(_marketingWalletAddress,marketBalance) (bitcoin.sol#332)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
- IERC20(DOGE).transfer(_buyBackWalletAddress,buyBackBalance) (bitcoin.sol#333)
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#371-377)
- swapAndSendDividends(sellTokens) (bitcoin.sol#284)
- success = IERC20(DOGE).transfer(address(dividendTracker),dividends) (bitcoin.sol#420)
- dividendTracker.distributeDOGEDividends(dividends) (bitcoin.sol#423)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
- dividendTracker.setBalance(address(from),balanceOf(from)) (bitcoin.sol#309)
- dividendTracker.setBalance(address(to),balanceOf(to)) (bitcoin.sol#310)
- dividendTracker.process(gas) (bitcoin.sol#315-320)
External calls sending eth:
- swapAndLiquify(swapTokens) (bitcoin.sol#281)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
Event emitted after the call(s):
- ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (bitcoin.sol#316)
Reentrancy in bitcoin.constructor() (bitcoin.sol#86-128):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (bitcoin.sol#93-94)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (bitcoin.sol#99)
- dividendTracker.excludeFromDividends(pair) (bitcoin.sol#170)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (bitcoin.sol#173)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (bitcoin.sol#99)
Reentrancy in bitcoin.constructor() (bitcoin.sol#86-128):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (bitcoin.sol#93-94)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (bitcoin.sol#99)
- dividendTracker.excludeFromDividends(pair) (bitcoin.sol#170)
- dividendTracker.excludeFromDividends(address(dividendTracker)) (bitcoin.sol#102)
- dividendTracker.excludeFromDividends(address(this)) (bitcoin.sol#103)
- dividendTracker.excludeFromDividends(owner()) (bitcoin.sol#104)
- dividendTracker.excludeFromDividends(deadWallet) (bitcoin.sol#105)
- dividendTracker.excludeFromDividends(address(_uniswapV2Router)) (bitcoin.sol#106)
Event emitted after the call(s):
- ExcludeFromFees(account,excluded) (bitcoin.sol#155)
- excludeFromFees(_marketingWalletAddress,true) (bitcoin.sol#110)
- ExcludeFromFees(account,excluded) (bitcoin.sol#155)
- excludeFromFees(_buyBackWalletAddress,true) (bitcoin.sol#112)
- ExcludeFromFees(account,excluded) (bitcoin.sol#155)
- excludeFromFees(address(this),true) (bitcoin.sol#111)
- ExcludeFromFees(account,excluded) (bitcoin.sol#155)
- excludeFromFees(owner(),true) (bitcoin.sol#109)
- Transfer(address(0),account,amount) (ERC20.sol#242)
- _mint(owner(),1000000000000000 * (10 ** 18)) (bitcoin.sol#127)
Reentrancy in bitcoinDividendTracker.processAccount(address,bool) (bitcoin.sol#616-626):
External calls:
- amount = _withdrawDividendOfUser(account) (bitcoin.sol#617)
- success = IERC20(DOGE).transfer(user,_withdrawableDividend) (DividendPayingToken.sol#81)
Event emitted after the call(s):
- Claim(account,amount,automatic) (bitcoin.sol#621)
Reentrancy in bitcoin.processDividendTracker(uint256) (bitcoin.sol#227-230):
External calls:
- (iterations,claims,lastProcessedIndex) = dividendTracker.process(gas) (bitcoin.sol#228)
Event emitted after the call(s):
- ProcessedDividendTracker(iterations,claims,lastProcessedIndex,false,gas,tx.origin) (bitcoin.sol#229)
Reentrancy in bitcoin.swapAndLiquify(uint256) (bitcoin.sol#336-357):
External calls:
- swapTokensForEth(half) (bitcoin.sol#348)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#371-377)
- addLiquidity(otherHalf,newBalance) (bitcoin.sol#354)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (bitcoin.sol#354)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (bitcoin.sol#406-413)
Event emitted after the call(s):
- Approval(owner,spender,amount) (ERC20.sol#288)
- addLiquidity(otherHalf,newBalance) (bitcoin.sol#354)
- SwapAndLiquify(half,newBalance,otherHalf) (bitcoin.sol#356)
Reentrancy in bitcoin.swapAndSendDividends(uint256) (bitcoin.sol#417-426):
External calls:
- swapTokensForDOGE(tokens) (bitcoin.sol#418)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (bitcoin.sol#391-397)
- success = IERC20(DOGE).transfer(address(dividendTracker),dividends) (bitcoin.sol#420)
- dividendTracker.distributeDOGEDividends(dividends) (bitcoin.sol#423)
Event emitted after the call(s):
- SendDividends(tokens,dividends) (bitcoin.sol#424)
Reentrancy in bitcoin.updateDividendTracker(address) (bitcoin.sol#134-149):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (bitcoin.sol#141)
- newDividendTracker.excludeFromDividends(address(this)) (bitcoin.sol#142)
- newDividendTracker.excludeFromDividends(owner()) (bitcoin.sol#143)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (bitcoin.sol#144)
Event emitted after the call(s):
- UpdateDividendTracker(newAddress,address(dividendTracker)) (bitcoin.sol#146)
Apply the check-effects-interactions pattern.

Additional information: link

bitcoinDividendTracker.getAccount(address) (bitcoin.sol#480-523) uses timestamp for comparisons
Dangerous comparisons:
- nextClaimTime > block.timestamp (bitcoin.sol#520-522)
bitcoinDividendTracker.canAutoClaim(uint256) (bitcoin.sol#544-550) uses timestamp for comparisons
Dangerous comparisons:
- lastClaimTime > block.timestamp (bitcoin.sol#545)
- block.timestamp.sub(lastClaimTime) >= claimWait (bitcoin.sol#549)
Avoid relying on block.timestamp.

Additional information: link

Context._msgData() (Context.sol#20-23) is never used and should be removed
DividendPayingToken._transfer(address,address,uint256) (DividendPayingToken.sol#132-138) is never used and should be removed
SafeMath.mod(uint256,uint256) (SafeMath.sol#126-128) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (SafeMath.sol#142-145) is never used and should be removed
SafeMathInt.abs(int256) (SafeMathInt.sol#82-85) is never used and should be removed
SafeMathInt.div(int256,int256) (SafeMathInt.sol#53-59) is never used and should be removed
SafeMathInt.mul(int256,int256) (SafeMathInt.sol#41-48) is never used and should be removed
Remove unused functions.

Additional information: link

bitcoin.totalFees (bitcoin.sol#36) is set pre-construction with a non-constant function or state variable:
- DOGERewardsFee.add(liquidityFee).add(marketingFee).add(burnFee).add(buyBackFee)
Remove any initialization of state variables via non-constant state variables or function calls. If variables must be set upon contract deployment, locate initialization in the constructor instead.

Additional information: link

Pragma version^0.6.2 (Context.sol#3) allows old versions
Pragma version^0.6.2 (DividendPayingToken.sol#3) allows old versions
Pragma version^0.6.2 (DividendPayingTokenInterface.sol#3) allows old versions
Pragma version^0.6.2 (DividendPayingTokenOptionalInterface.sol#3) allows old versions
Pragma version^0.6.2 (ERC20.sol#3) allows old versions
Pragma version^0.6.2 (IERC20.sol#3) allows old versions
Pragma version^0.6.2 (IERC20Metadata.sol#3) allows old versions
Pragma version^0.6.2 (IUniswapV2Factory.sol#3) allows old versions
Pragma version^0.6.2 (IUniswapV2Pair.sol#3) allows old versions
Pragma version^0.6.2 (IUniswapV2Router.sol#3) allows old versions
Pragma version^0.6.2 (IterableMapping.sol#2) allows old versions
Pragma version^0.6.2 (Ownable.sol#1) allows old versions
Pragma version^0.6.2 (SafeMath.sol#3) allows old versions
Pragma version^0.6.2 (SafeMathInt.sol#28) allows old versions
Pragma version^0.6.2 (SafeMathUint.sol#3) allows old versions
Pragma version^0.6.2 (bitcoin.sol#4) 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

Parameter DividendPayingToken.dividendOf(address)._owner (DividendPayingToken.sol#98) is not in mixedCase
Parameter DividendPayingToken.withdrawableDividendOf(address)._owner (DividendPayingToken.sol#105) is not in mixedCase
Parameter DividendPayingToken.withdrawnDividendOf(address)._owner (DividendPayingToken.sol#112) is not in mixedCase
Parameter DividendPayingToken.accumulativeDividendOf(address)._owner (DividendPayingToken.sol#122) is not in mixedCase
Variable DividendPayingToken.DOGE (DividendPayingToken.sol#24) is not in mixedCase
Constant DividendPayingToken.magnitude (DividendPayingToken.sol#30) is not in UPPER_CASE_WITH_UNDERSCORES
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (IUniswapV2Pair.sol#20) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (IUniswapV2Pair.sol#21) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (IUniswapV2Pair.sol#38) is not in mixedCase
Function IUniswapV2Router01.WETH() (IUniswapV2Router.sol#7) is not in mixedCase
Contract bitcoin (bitcoin.sol#15-427) is not in CapWords
Variable bitcoin.DOGE (bitcoin.sol#27) is not in mixedCase
Variable bitcoin.DOGERewardsFee (bitcoin.sol#31) is not in mixedCase
Variable bitcoin._marketingWalletAddress (bitcoin.sol#38) is not in mixedCase
Variable bitcoin._buyBackWalletAddress (bitcoin.sol#39) is not in mixedCase
Variable bitcoin._isExcludedFromRestrict (bitcoin.sol#47) is not in mixedCase
Contract bitcoinDividendTracker (bitcoin.sol#429-627) is not in CapWords
Parameter bitcoinDividendTracker.getAccount(address)._account (bitcoin.sol#480) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (Context.sol#21)" inContext (Context.sol#15-24)
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 (IUniswapV2Router.sol#12) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (IUniswapV2Router.sol#13)
Variable DividendPayingToken._withdrawDividendOfUser(address)._withdrawableDividend (DividendPayingToken.sol#77) is too similar to bitcoinDividendTracker.getAccount(address).withdrawableDividends (bitcoin.sol#485)
Prevent variables from having similar names.

Additional information: link

bitcoin.constructor() (bitcoin.sol#86-128) uses literals with too many digits:
- _mint(owner(),1000000000000000 * (10 ** 18)) (bitcoin.sol#127)
bitcoin.slitherConstructorVariables() (bitcoin.sol#15-427) uses literals with too many digits:
- deadWallet = 0x000000000000000000000000000000000000dEaD (bitcoin.sol#25)
bitcoin.slitherConstructorVariables() (bitcoin.sol#15-427) uses literals with too many digits:
- swapTokensAtAmount = 100000000000 * (10 ** 18) (bitcoin.sol#29)
bitcoin.slitherConstructorVariables() (bitcoin.sol#15-427) uses literals with too many digits:
- gasForProcessing = 300000 (bitcoin.sol#42)
bitcoinDividendTracker.constructor() (bitcoin.sol#449-452) uses literals with too many digits:
- minimumTokenBalanceForDividends = 200000000 * (10 ** 18) (bitcoin.sol#451)
bitcoinDividendTracker.getAccountAtIndex(uint256) (bitcoin.sol#525-542) uses literals with too many digits:
- (0x0000000000000000000000000000000000000000,- 1,- 1,0,0,0,0,0) (bitcoin.sol#536)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

SafeMathInt.MAX_INT256 (SafeMathInt.sol#36) is never used in SafeMathInt (SafeMathInt.sol#34-92)
Remove unused state variables.

Additional information: link

distributeDOGEDividends(uint256) should be declared external:
- DividendPayingToken.distributeDOGEDividends(uint256) (DividendPayingToken.sol#55-66)
withdrawDividend() should be declared external:
- DividendPayingToken.withdrawDividend() (DividendPayingToken.sol#70-72)
- bitcoinDividendTracker.withdrawDividend() (bitcoin.sol#458-460)
dividendOf(address) should be declared external:
- DividendPayingToken.dividendOf(address) (DividendPayingToken.sol#98-100)
withdrawnDividendOf(address) should be declared external:
- DividendPayingToken.withdrawnDividendOf(address) (DividendPayingToken.sol#112-114)
name() should be declared external:
- ERC20.name() (ERC20.sol#63-65)
symbol() should be declared external:
- ERC20.symbol() (ERC20.sol#71-73)
decimals() should be declared external:
- ERC20.decimals() (ERC20.sol#88-90)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (ERC20.sol#114-117)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (ERC20.sol#122-124)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (ERC20.sol#133-136)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (ERC20.sol#151-159)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (ERC20.sol#173-176)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (ERC20.sol#192-195)
get(IterableMapping.Map,address) should be declared external:
- IterableMapping.get(IterableMapping.Map,address) (IterableMapping.sol#13-15)
getIndexOfKey(IterableMapping.Map,address) should be declared external:
- IterableMapping.getIndexOfKey(IterableMapping.Map,address) (IterableMapping.sol#17-22)
getKeyAtIndex(IterableMapping.Map,uint256) should be declared external:
- IterableMapping.getKeyAtIndex(IterableMapping.Map,uint256) (IterableMapping.sol#24-26)
size(IterableMapping.Map) should be declared external:
- IterableMapping.size(IterableMapping.Map) (IterableMapping.sol#30-32)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (Ownable.sol#43-46)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (Ownable.sol#52-56)
updateDividendTracker(address) should be declared external:
- bitcoin.updateDividendTracker(address) (bitcoin.sol#134-149)
excludeFromRestrict(address,bool) should be declared external:
- bitcoin.excludeFromRestrict(address,bool) (bitcoin.sol#158-163)
isExcludedFromFees(address) should be declared external:
- bitcoin.isExcludedFromFees(address) (bitcoin.sol#185-187)
withdrawableDividendOf(address) should be declared external:
- bitcoin.withdrawableDividendOf(address) (bitcoin.sol#189-191)
dividendTokenBalanceOf(address) should be declared external:
- bitcoin.dividendTokenBalanceOf(address) (bitcoin.sol#193-195)
getAccountAtIndex(uint256) should be declared external:
- bitcoinDividendTracker.getAccountAtIndex(uint256) (bitcoin.sol#525-542)
process(uint256) should be declared external:
- bitcoinDividendTracker.process(uint256) (bitcoin.sol#569-614)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


Attempt to swap token was unsuccessful. For some reason it is untradeable. If token is not in presale stage and is not traded outside PancakeSwap, then it's a scam

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.


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


Token is deployed only at one blockchain


Token has only one trading pair


Unable to find Telegram and Twitter accounts

Search:


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


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


Token has no active CoinGecko listing / rank


Token has no active CoinMarketCap listing / rank

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