COSO [COSO Equity] Token

Reentrancy in COSOEquityToken.withdrawAction(uint256) (#829-843):
External calls:
- withdrawTokenList[_withdrawId].safeTransfer(msg.sender,withdrawNumList[_withdrawId]) (#839)
External calls sending eth:
- address(msg.sender).transfer(withdrawNumList[_withdrawId]) (#837)
State variables written after the call(s):
- withdrawStatus[_withdrawId] = true (#841)
Apply the check-effects-interactions pattern.

Additional information: link

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

Contract ownership is not renounced (belongs to a wallet)

Reentrancy in COSOEquityToken.buyback(uint256) (#786-795):
External calls:
- IERC20(buybackToken).safeTransfer(msg.sender,back) (#792)
- safeTransferFrom(msg.sender,devAddress,_tokenId) (#793)
- IERC721Receiver(to).onERC721Received(_msgSender(),from,tokenId,_data) (#541-551)
State variables written after the call(s):
- canBuyBackList[msg.sender][_tokenId] = false (#794)
Reentrancy in COSOEquityToken.massMintOne(address[]) (#752-765):
External calls:
- _safeMint(_toList[i_scope_0],tokenIdNow) (#760)
- IERC721Receiver(to).onERC721Received(_msgSender(),from,tokenId,_data) (#541-551)
State variables written after the call(s):
- hasMineOneList[_toList[i_scope_0]] = true (#761)
Apply the check-effects-interactions pattern.

Additional information: link

ERC721._checkOnERC721Received(address,address,uint256,bytes) (#534-555) ignores return value by IERC721Receiver(to).onERC721Received(_msgSender(),from,tokenId,_data) (#541-551)
Ensure that all the return values of the function calls are used.

Additional information: link

COSOEquityToken.setBaseURI(string)._baseURI (#718) shadows:
- ERC721._baseURI() (#389-391) (function)
Rename the local variables that shadow another component.

Additional information: link

COSOEquityToken.setSwapFee(uint256) (#714-716) should emit an event for:
- swapFee = _swapFee (#715)
COSOEquityToken.setBuyBackPrice(IERC20,uint256) (#734-737) should emit an event for:
- buybackPrice = _price.mul(10 ** IERC20(_token).decimals()) (#736)
COSOEquityToken.setCanBuyBlackBlockNumber(bool,uint256) (#739-742) should emit an event for:
- canBuyBlackBlockNumber = _canBuyBlackBlockNumber (#741)
Emit an event for critical parameter changes.

Additional information: link

COSOEquityToken.setDevAddress(address)._devAddress (#709) lacks a zero-check on :
- devAddress = _devAddress (#711)
Check that the address is not zero.

Additional information: link

ERC721._checkOnERC721Received(address,address,uint256,bytes) (#534-555) has external calls inside a loop: IERC721Receiver(to).onERC721Received(_msgSender(),from,tokenId,_data) (#541-551)
Favor pull over push strategy for external calls.

Additional information: link

Variable 'ERC721._checkOnERC721Received(address,address,uint256,bytes).retval (#541)' in ERC721._checkOnERC721Received(address,address,uint256,bytes) (#534-555) potentially used before declaration: retval == IERC721Receiver(to).onERC721Received.selector (#542)
Variable 'ERC721._checkOnERC721Received(address,address,uint256,bytes).reason (#543)' in ERC721._checkOnERC721Received(address,address,uint256,bytes) (#534-555) potentially used before declaration: reason.length == 0 (#544)
Variable 'ERC721._checkOnERC721Received(address,address,uint256,bytes).reason (#543)' in ERC721._checkOnERC721Received(address,address,uint256,bytes) (#534-555) potentially used before declaration: revert(uint256,uint256)(32 + reason,mload(uint256)(reason)) (#548)
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 COSOEquityToken.massMintOne(address[]) (#752-765):
External calls:
- _safeMint(_toList[i_scope_0],tokenIdNow) (#760)
- IERC721Receiver(to).onERC721Received(_msgSender(),from,tokenId,_data) (#541-551)
State variables written after the call(s):
- canBuyBackList[_toList[i_scope_0]][tokenIdNow] = true (#762)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in COSOEquityToken.buyback(uint256) (#786-795):
External calls:
- IERC20(buybackToken).safeTransfer(msg.sender,back) (#792)
- safeTransferFrom(msg.sender,devAddress,_tokenId) (#793)
- IERC721Receiver(to).onERC721Received(_msgSender(),from,tokenId,_data) (#541-551)
Event emitted after the call(s):
- Approval(ERC721.ownerOf(tokenId),to,tokenId) (#531)
- safeTransferFrom(msg.sender,devAddress,_tokenId) (#793)
- Transfer(from,to,tokenId) (#526)
- safeTransferFrom(msg.sender,devAddress,_tokenId) (#793)
Reentrancy in COSOEquityToken.withdrawAction(uint256) (#829-843):
External calls:
- withdrawTokenList[_withdrawId].safeTransfer(msg.sender,withdrawNumList[_withdrawId]) (#839)
External calls sending eth:
- address(msg.sender).transfer(withdrawNumList[_withdrawId]) (#837)
Event emitted after the call(s):
- withdrawEvent(_withdrawId,withdrawTokenList[_withdrawId],withdrawNumList[_withdrawId],msg.sender) (#842)
Apply the check-effects-interactions pattern.

Additional information: link

Address.isContract(address) (#234-240) uses assembly
- INLINE ASM (#236-238)
Address._verifyCallResult(bool,bytes,string) (#312-332) uses assembly
- INLINE ASM (#324-327)
ERC721._checkOnERC721Received(address,address,uint256,bytes) (#534-555) uses assembly
- INLINE ASM (#547-549)
Do not use evm assembly.

Additional information: link

COSOEquityToken.mintForMiner(address) (#744-750) compares to a boolean constant:
-require(bool,string)(MinerList[msg.sender] == true,e002) (#745)
COSOEquityToken.massMintOne(address[]) (#752-765) compares to a boolean constant:
-require(bool,string)(hasMineOneList[_toList[i]] == false,e005) (#755)
COSOEquityToken.massMintOne(address[]) (#752-765) compares to a boolean constant:
-require(bool,string)(hasMineOneList[_toList[i_scope_0]] == false,e006) (#758)
COSOEquityToken.getBuybackTokenId(address) (#767-784) compares to a boolean constant:
-canBuyBackList[_user][tokenOfOwnerByIndex(_user,i_scope_0)] == true (#779)
COSOEquityToken.getBuybackTokenId(address) (#767-784) compares to a boolean constant:
-canBuyBackList[_user][tokenOfOwnerByIndex(_user,i)] == true (#772)
COSOEquityToken.buyback(uint256) (#786-795) compares to a boolean constant:
-require(bool,string)(canBuyBackList[msg.sender][_tokenId] == true,e008) (#788)
COSOEquityToken.buyback(uint256) (#786-795) compares to a boolean constant:
-require(bool,string)(canBuyBlack == true && block.number > canBuyBlackBlockNumber && canBuyBlackBlockNumber > 0,e007) (#787)
COSOEquityToken.createWithdraw(IERC20,uint256) (#801-809) compares to a boolean constant:
-require(bool,string)(isDevAddressList[msg.sender] == true,e001) (#803)
COSOEquityToken.createEthWithdraw(uint256) (#811-819) compares to a boolean constant:
-require(bool,string)(isDevAddressList[msg.sender] == true,e002) (#813)
COSOEquityToken.approveWithdraw(uint256) (#821-827) compares to a boolean constant:
-require(bool,string)(isDevAddressList[msg.sender] == true,e004) (#823)
COSOEquityToken.approveWithdraw(uint256) (#821-827) compares to a boolean constant:
-require(bool,string)(withdrawRequestList[_withdrawId][msg.sender] == false,e005) (#824)
COSOEquityToken.withdrawAction(uint256) (#829-843) compares to a boolean constant:
-require(bool,string)(isDevAddressList[msg.sender] == true,e006) (#830)
COSOEquityToken.withdrawAction(uint256) (#829-843) compares to a boolean constant:
-require(bool,string)(withdrawRequestList[_withdrawId][devAddressList[i]] == true,e007) (#832)
COSOEquityToken.withdrawAction(uint256) (#829-843) compares to a boolean constant:
-require(bool,string)(withdrawStatus[_withdrawId] == false,e009) (#835)
Remove the equality to the boolean constant.

Additional information: link

COSOEquityToken.constructor(string,string,IERC20,address[]) (#693-702) has costly operations inside a loop:
- devAddressListNum = devAddressListNum.add(1) (#700)
COSOEquityToken.massMintOne(address[]) (#752-765) has costly operations inside a loop:
- tokenIdNow = tokenIdNow + 1 (#759)
ERC721Enumerable._removeTokenFromAllTokensEnumeration(uint256) (#638-646) has costly operations inside a loop:
- delete _allTokensIndex[tokenId] (#644)
ERC721Enumerable._removeTokenFromAllTokensEnumeration(uint256) (#638-646) has costly operations inside a loop:
- _allTokens.pop() (#645)
ERC721Enumerable._removeTokenFromOwnerEnumeration(address,uint256) (#626-636) has costly operations inside a loop:
- delete _ownedTokensIndex[tokenId] (#634)
Use a local variable to hold the loop computation result.

Additional information: link

Address.functionCall(address,bytes) (#249-251) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#261-267) is never used and should be removed
Address.functionDelegateCall(address,bytes) (#297-299) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (#301-310) is never used and should be removed
Address.functionStaticCall(address,bytes) (#282-284) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (#286-295) is never used and should be removed
Address.sendValue(address,uint256) (#242-247) is never used and should be removed
Context._msgData() (#162-164) is never used and should be removed
ERC721._baseURI() (#389-391) is never used and should be removed
ERC721._burn(uint256) (#497-509) is never used and should be removed
SafeERC20.safeTransferFrom(IERC20,address,address,uint256) (#56-58) is never used and should be removed
Strings.toHexString(uint256) (#131-142) is never used and should be removed
Strings.toHexString(uint256,uint256) (#144-154) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.8.0 (#2) allows old versions
solc-0.8.10 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) (#242-247):
- (success) = recipient.call{value: amount}() (#245)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (#269-280):
- (success,returndata) = target.call{value: value}(data) (#278)
Low level call in Address.functionStaticCall(address,bytes,string) (#286-295):
- (success,returndata) = target.staticcall(data) (#293)
Low level call in Address.functionDelegateCall(address,bytes,string) (#301-310):
- (success,returndata) = target.delegatecall(data) (#308)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Parameter ERC721.safeTransferFrom(address,address,uint256,bytes)._data (#443) is not in mixedCase
Struct COSOEquityToken.nftInfoItem (#675-680) is not in CapWords
Struct COSOEquityToken.otherInfoItem (#682-691) is not in CapWords
Event COSOEquityTokencreateEvent(uint256,IERC20,uint256,address) (#704) is not in CapWords
Event COSOEquityTokenapproveEvent(uint256,address) (#705) is not in CapWords
Event COSOEquityTokenwithdrawEvent(uint256,IERC20,uint256,address) (#706) is not in CapWords
Parameter COSOEquityToken.setDevAddress(address)._devAddress (#709) is not in mixedCase
Parameter COSOEquityToken.setSwapFee(uint256)._swapFee (#714) is not in mixedCase
Parameter COSOEquityToken.setBaseURI(string)._baseURI (#718) is not in mixedCase
Parameter COSOEquityToken.addMiner(address)._adddress (#722) is not in mixedCase
Parameter COSOEquityToken.removeMiner(address)._adddress (#726) is not in mixedCase
Parameter COSOEquityToken.transferMore(uint256)._tokenId (#730) is not in mixedCase
Parameter COSOEquityToken.setBuyBackPrice(IERC20,uint256)._token (#734) is not in mixedCase
Parameter COSOEquityToken.setBuyBackPrice(IERC20,uint256)._price (#734) is not in mixedCase
Parameter COSOEquityToken.setCanBuyBlackBlockNumber(bool,uint256)._canBuyBackOrNot (#739) is not in mixedCase
Parameter COSOEquityToken.setCanBuyBlackBlockNumber(bool,uint256)._canBuyBlackBlockNumber (#739) is not in mixedCase
Parameter COSOEquityToken.mintForMiner(address)._to (#744) is not in mixedCase
Parameter COSOEquityToken.massMintOne(address[])._toList (#752) is not in mixedCase
Parameter COSOEquityToken.getBuybackTokenId(address)._user (#767) is not in mixedCase
Parameter COSOEquityToken.buyback(uint256)._tokenId (#786) is not in mixedCase
Parameter COSOEquityToken.tokenURI(uint256)._tokenId (#797) is not in mixedCase
Parameter COSOEquityToken.createWithdraw(IERC20,uint256)._token (#801) is not in mixedCase
Parameter COSOEquityToken.createWithdraw(IERC20,uint256)._amount (#801) is not in mixedCase
Parameter COSOEquityToken.createEthWithdraw(uint256)._amount (#811) is not in mixedCase
Parameter COSOEquityToken.approveWithdraw(uint256)._withdrawId (#821) is not in mixedCase
Parameter COSOEquityToken.withdrawAction(uint256)._withdrawId (#829) is not in mixedCase
Variable COSOEquityToken.ETH (#662) is not in mixedCase
Variable COSOEquityToken.MinerList (#664) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Reentrancy in COSOEquityToken.withdrawAction(uint256) (#829-843):
External calls:
- address(msg.sender).transfer(withdrawNumList[_withdrawId]) (#837)
State variables written after the call(s):
- withdrawStatus[_withdrawId] = true (#841)
Event emitted after the call(s):
- withdrawEvent(_withdrawId,withdrawTokenList[_withdrawId],withdrawNumList[_withdrawId],msg.sender) (#842)
Apply the check-effects-interactions pattern.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#183-185)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#187-190)
approve(address,uint256) should be declared external:
- ERC721.approve(address,uint256) (#393-403)
setApprovalForAll(address,bool) should be declared external:
- ERC721.setApprovalForAll(address,bool) (#411-416)
transferFrom(address,address,uint256) should be declared external:
- ERC721.transferFrom(address,address,uint256) (#422-429)
tokenByIndex(uint256) should be declared external:
- ERC721Enumerable.tokenByIndex(uint256) (#592-595)
setSwapFee(uint256) should be declared external:
- COSOEquityToken.setSwapFee(uint256) (#714-716)
setBaseURI(string) should be declared external:
- COSOEquityToken.setBaseURI(string) (#718-720)
removeMiner(address) should be declared external:
- COSOEquityToken.removeMiner(address) (#726-728)
transferMore(uint256) should be declared external:
- COSOEquityToken.transferMore(uint256) (#730-732)
setBuyBackPrice(IERC20,uint256) should be declared external:
- COSOEquityToken.setBuyBackPrice(IERC20,uint256) (#734-737)
setCanBuyBlackBlockNumber(bool,uint256) should be declared external:
- COSOEquityToken.setCanBuyBlackBlockNumber(bool,uint256) (#739-742)
mintForMiner(address) should be declared external:
- COSOEquityToken.mintForMiner(address) (#744-750)
massMintOne(address[]) should be declared external:
- COSOEquityToken.massMintOne(address[]) (#752-765)
getBuybackTokenId(address) should be declared external:
- COSOEquityToken.getBuybackTokenId(address) (#767-784)
buyback(uint256) should be declared external:
- COSOEquityToken.buyback(uint256) (#786-795)
createWithdraw(IERC20,uint256) should be declared external:
- COSOEquityToken.createWithdraw(IERC20,uint256) (#801-809)
createEthWithdraw(uint256) should be declared external:
- COSOEquityToken.createEthWithdraw(uint256) (#811-819)
approveWithdraw(uint256) should be declared external:
- COSOEquityToken.approveWithdraw(uint256) (#821-827)
withdrawAction(uint256) should be declared external:
- COSOEquityToken.withdrawAction(uint256) (#829-843)
Use the external attribute for functions never called from the contract.

Additional information: link

Token seems to be untradeable: there is no PancakeSwap trading pair and no trading volumes. Ignore for presale.

Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death