Born To Race - Smart Contract Audit Report
Born To Race ($BRT) is a new BEP20 token on the Binance Smart Chain that is an automatic liquidity providing protocol that pays out static rewards to holders.
Notes on the Contract:
Audit Findings Summary
- The total supply of the token is set to 1 million $BRT [1,000,000].
- No minting or burn functions are present; though the circulating supply can be reduced by sending tokens to the 0x..dead address, if desired.
- At the time of writing this report, 28.34% of the total supply belongs to a KIPS Locked Wallet.
- 11.6% of the total supply is in Pancakeswap liquidity.
- Of that liquidity, 100% of the LP tokens belong to an unverified contract.
- 7.08% of the total supply has been sent to the 0x..dead address.
- 1.5% of the total supply belongs to the CoinToken contract address.
- The next five holders own a cumulative 8.29% of the total supply.
- There is a tax fee, liquidity fee, and dev fee on all transfers where neither the sender nor the recipient are excluded from fees.
- The tokens collected from the tax fee are removed from the circulating supply; This serves as a frictionless fee redistribution which automatically benefits all token holders at the time of each transaction.
- The tokens collected from the liquidity fee during transfers are stored in the contract address balance. Once a threshold number of tokens (determined by the owner) is met, a swap will occur for the purpose of funding Pancakeswap liquidity.
- Liquidity-adds are funded by selling a portion of the tokens collected as fees (after the threshold number of tokens is met), then pairing the received BNB with the token, and adding it as liquidity to the BNB pair.
- The recipient of the newly created LP tokens is the owner. We recommend that the team locks these newly acquired LP tokens.
- The tokens collected from the dev fee are sent to the team's Dev wallet.
- Although the Safemath library is utilized, the contract is deployed with Solidity v0.8.4 which has built-in overflow checks. Safemath could be safely removed to reduce contract size and increase gas savings.
- Some gas optimizations can be achieved through declaring functions external instead of public. As this contract is already deployed, this is merely informational.
- Ownership has not been renounced.
- The owner can modify the tax fee, liquidity fee, and dev fee to any percentages at any time.
- The owner can exclude and include accounts from transfer fees and reward distribution.
- The owner can set and update a maximum transaction amount at any time, which will impose a limit to the number of tokens that can be transferred during any given transaction.
- The owner can enable/disable automatic liquidity adds and set the threshold number of tokens related to it at any time.
- The owner can update the team's Dev wallet and Pancakeswap Router to any addresses at any time.
- The owner can use the "lock" function in order to temporarily set ownership to address(0). Ownership is restored after the duration of time determined by the owner has passed and they use the 'unlock' function.
- The unlock function has the potential to be used after ownership is renounced, which will restore ownership to the original owner that initially created the ownership lock. This can be used in a nefarious way by the project team to restore ownership and change fee structures.
- We recommend that the unlock function is modified to set the "previous owner" = "address(0)" at the end of the unlock function to prevent it from being used more than once per lock.
- No external threats were identified.
- Please ensure trust in the team prior to investing as they have substantial control in the ecosystem.
- Please be aware of the amount of liquidity available in proportion to the largest wallets.
- Date: December 20th, 2021
|Arbitrary Storage Write||N/A||PASS|
|Centralization of Control||The owner can set each fee percentage up to 100%.||WARNING|
|Delegate Call to Untrusted Contract||N/A||PASS|
|Dependence on Predictable Variables||N/A||PASS|
|State Change External Calls||N/A||PASS|
|User Supplied Assertion||N/A||PASS|
|Critical Solidity Compiler||N/A||PASS|
|Overall Contract Safety||PASS|
($) = payable function # = non-constant function + [Int] IERC20 - [Ext] totalSupply - [Ext] balanceOf - [Ext] transfer # - [Ext] allowance - [Ext] approve # - [Ext] transferFrom # + [Lib] SafeMath - [Int] tryAdd - [Int] trySub - [Int] tryMul - [Int] tryDiv - [Int] tryMod - [Int] add - [Int] sub - [Int] mul - [Int] div - [Int] mod - [Int] sub - [Int] div - [Int] mod + Context - [Int] _msgSender - [Int] _msgData + [Lib] Address - [Int] isContract - [Int] sendValue # - [Int] functionCall # - [Int] functionCall # - [Int] functionCallWithValue # - [Int] functionCallWithValue # - [Int] functionStaticCall - [Int] functionStaticCall - [Int] functionDelegateCall # - [Int] functionDelegateCall # - [Prv] _verifyCallResult + Ownable (Context) - [Pub]
# - [Pub] owner - [Pub] renounceOwnership # - modifiers: onlyOwner - [Pub] transferOwnership # - modifiers: onlyOwner - [Pub] lock # - modifiers: onlyOwner - [Pub] unlock # + [Int] IUniswapV2Factory - [Ext] feeTo - [Ext] feeToSetter - [Ext] getPair - [Ext] allPairs - [Ext] allPairsLength - [Ext] createPair # - [Ext] setFeeTo # - [Ext] setFeeToSetter # + [Int] IUniswapV2Pair - [Ext] name - [Ext] symbol - [Ext] decimals - [Ext] totalSupply - [Ext] balanceOf - [Ext] allowance - [Ext] approve # - [Ext] transfer # - [Ext] transferFrom # - [Ext] DOMAIN_SEPARATOR - [Ext] PERMIT_TYPEHASH - [Ext] nonces - [Ext] permit # - [Ext] MINIMUM_LIQUIDITY - [Ext] factory - [Ext] token0 - [Ext] token1 - [Ext] getReserves - [Ext] price0CumulativeLast - [Ext] price1CumulativeLast - [Ext] kLast - [Ext] mint # - [Ext] burn # - [Ext] swap # - [Ext] skim # - [Ext] sync # - [Ext] initialize # + [Int] IUniswapV2Router01 - [Ext] factory - [Ext] WETH - [Ext] addLiquidity # - [Ext] addLiquidityETH ($) - [Ext] removeLiquidity # - [Ext] removeLiquidityETH # - [Ext] removeLiquidityWithPermit # - [Ext] removeLiquidityETHWithPermit # - [Ext] swapExactTokensForTokens # - [Ext] swapTokensForExactTokens # - [Ext] swapExactETHForTokens ($) - [Ext] swapTokensForExactETH # - [Ext] swapExactTokensForETH # - [Ext] swapETHForExactTokens ($) - [Ext] quote - [Ext] getAmountOut - [Ext] getAmountIn - [Ext] getAmountsOut - [Ext] getAmountsIn + [Int] IUniswapV2Router02 (IUniswapV2Router01) - [Ext] removeLiquidityETHSupportingFeeOnTransferTokens # - [Ext] removeLiquidityETHWithPermitSupportingFeeOnTransferTokens # - [Ext] swapExactTokensForTokensSupportingFeeOnTransferTokens # - [Ext] swapExactETHForTokensSupportingFeeOnTransferTokens ($) - [Ext] swapExactTokensForETHSupportingFeeOnTransferTokens # + CoinToken (Context, IERC20, Ownable) - [Pub] ($) - [Pub] name - [Pub] symbol - [Pub] decimals - [Pub] totalSupply - [Pub] balanceOf - [Pub] transfer # - [Pub] allowance - [Pub] approve # - [Pub] transferFrom # - [Pub] increaseAllowance # - [Pub] decreaseAllowance # - [Pub] isExcludedFromReward - [Pub] totalFees - [Pub] deliver # - [Pub] reflectionFromToken - [Pub] tokenFromReflection - [Pub] excludeFromReward # - modifiers: onlyOwner - [Ext] includeInReward # - modifiers: onlyOwner - [Prv] _transferBothExcluded # - [Pub] excludeFromFee # - modifiers: onlyOwner - [Pub] includeInFee # - modifiers: onlyOwner - [Ext] setTaxFeePercent # - modifiers: onlyOwner - [Ext] setDevFeePercent # - modifiers: onlyOwner - [Ext] setLiquidityFeePercent # - modifiers: onlyOwner - [Pub] setMaxTxPercent # - modifiers: onlyOwner - [Pub] setDevWalletAddress # - modifiers: onlyOwner - [Pub] setSwapAndLiquifyEnabled # - modifiers: onlyOwner - [Ext] ($) - [Prv] _reflectFee # - [Prv] _getValues - [Prv] _getTValues - [Prv] _getRValues - [Prv] _getRate - [Prv] _getCurrentSupply - [Prv] _takeLiquidity # - [Prv] _takeDev # - [Prv] calculateTaxFee - [Prv] calculateDevFee - [Prv] calculateLiquidityFee - [Prv] removeAllFee # - [Prv] restoreAllFee # - [Pub] isExcludedFromFee - [Prv] _approve # - [Prv] _transfer # - [Prv] swapAndLiquify # - modifiers: lockTheSwap - [Prv] swapTokensForEth # - [Prv] addLiquidity # - [Prv] _tokenTransfer # - [Prv] _transferStandard # - [Prv] _transferToExcluded # - [Prv] _transferFromExcluded # - [Ext] setRouterAddress # - modifiers: onlyOwner - [Ext] setNumTokensSellToAddToLiquidity # - modifiers: onlyOwner