Port3Badge [Port3 Badge NFT Core] Token

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

Contract ownership is not renounced (belongs to a wallet)

StarNFTV3.uint2str(uint256) (StarNFTV3.sol#253-273) performs a multiplication on the result of a division:
-temp = (48 + uint8(_i - (_i / 10) * 10)) (StarNFTV3.sol#267)
Consider ordering multiplication before division.

Additional information: link

ERC721._mint(address,uint256) (ERC721.sol#333-344) ignores return value by _holderTokens[to].add(tokenId) (ERC721.sol#339)
ERC721._mint(address,uint256) (ERC721.sol#333-344) ignores return value by _tokenOwners.set(tokenId,to) (ERC721.sol#341)
ERC721._burn(uint256) (ERC721.sol#356-374) ignores return value by _holderTokens[owner].remove(tokenId) (ERC721.sol#369)
ERC721._burn(uint256) (ERC721.sol#356-374) ignores return value by _tokenOwners.remove(tokenId) (ERC721.sol#371)
ERC721._transfer(address,address,uint256) (ERC721.sol#387-402) ignores return value by _holderTokens[from].remove(tokenId) (ERC721.sol#396)
ERC721._transfer(address,address,uint256) (ERC721.sol#387-402) ignores return value by _holderTokens[to].add(tokenId) (ERC721.sol#397)
ERC721._transfer(address,address,uint256) (ERC721.sol#387-402) ignores return value by _tokenOwners.set(tokenId,to) (ERC721.sol#399)
Ensure that all the return values of the function calls are used.

Additional information: link

StarNFTV3.mint(address,uint256).cid (StarNFTV3.sol#126) shadows:
- StarNFTV3.cid(uint256) (StarNFTV3.sol#121-123) (function)
StarNFTV3.isOwnerOf(address,uint256).owner (StarNFTV3.sol#186) shadows:
- Ownable.owner() (Ownable.sol#35-37) (function)
StarNFTV3.setName(string)._name (StarNFTV3.sol#223) shadows:
- ERC721._name (ERC721.sol#45) (state variable)
StarNFTV3.setSymbol(string)._symbol (StarNFTV3.sol#230) shadows:
- ERC721._symbol (ERC721.sol#48) (state variable)
Rename the local variables that shadow another component.

Additional information: link

Address.isContract(address) (Address.sol#26-35) uses assembly
- INLINE ASM (Address.sol#33)
Address._verifyCallResult(bool,bytes,string) (Address.sol#171-188) uses assembly
- INLINE ASM (Address.sol#180-183)
Do not use evm assembly.

Additional information: link

Different versions of Solidity is used:
- Version used: ['0.7.6', '>=0.6.0<0.8.0', '>=0.6.2<0.8.0']
- >=0.6.2<0.8.0 (Address.sol#3)
- >=0.6.0<0.8.0 (Context.sol#3)
- >=0.6.0<0.8.0 (ERC165.sol#3)
- >=0.6.0<0.8.0 (ERC721.sol#3)
- >=0.6.0<0.8.0 (EnumerableMap.sol#3)
- >=0.6.0<0.8.0 (EnumerableSet.sol#3)
- >=0.6.0<0.8.0 (IERC165.sol#3)
- >=0.6.2<0.8.0 (IERC721.sol#3)
- >=0.6.2<0.8.0 (IERC721Enumerable.sol#3)
- >=0.6.2<0.8.0 (IERC721Metadata.sol#3)
- >=0.6.0<0.8.0 (IERC721Receiver.sol#3)
- 0.7.6 (IStarNFT.sol#18)
- >=0.6.0<0.8.0 (Ownable.sol#3)
- >=0.6.0<0.8.0 (SafeMath.sol#3)
- 0.7.6 (StarNFTV3.sol#15)
- >=0.6.0<0.8.0 (Strings.sol#3)
Use one Solidity version.

Additional information: link

StarNFTV3.mintBatch(address,uint256,uint256[]) (StarNFTV3.sol#140-153) has costly operations inside a loop:
- _starCount ++ (StarNFTV3.sol#147)
ERC721._burn(uint256) (ERC721.sol#356-374) has costly operations inside a loop:
- delete _tokenURIs[tokenId] (ERC721.sol#366)
StarNFTV3.burnBatch(address,uint256[]) (StarNFTV3.sol#164-177) has costly operations inside a loop:
- delete _cids[ids[i]] (StarNFTV3.sol#175)
Use a local variable to hold the loop computation result.

Additional information: link

Address.functionCall(address,bytes) (Address.sol#79-81) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (Address.sol#104-106) is never used and should be removed
Address.functionDelegateCall(address,bytes) (Address.sol#153-155) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (Address.sol#163-169) is never used and should be removed
Address.functionStaticCall(address,bytes) (Address.sol#129-131) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (Address.sol#139-145) is never used and should be removed
Address.sendValue(address,uint256) (Address.sol#53-59) is never used and should be removed
Context._msgData() (Context.sol#20-23) is never used and should be removed
ERC721._safeMint(address,uint256) (ERC721.sol#308-310) is never used and should be removed
ERC721._safeMint(address,uint256,bytes) (ERC721.sol#316-319) is never used and should be removed
ERC721._setTokenURI(uint256,string) (ERC721.sol#411-414) is never used and should be removed
EnumerableMap._get(EnumerableMap.Map,bytes32) (EnumerableMap.sol#163-167) is never used and should be removed
EnumerableMap._tryGet(EnumerableMap.Map,bytes32) (EnumerableMap.sol#150-154) is never used and should be removed
EnumerableMap.get(EnumerableMap.UintToAddressMap,uint256) (EnumerableMap.sol#253-255) is never used and should be removed
EnumerableMap.tryGet(EnumerableMap.UintToAddressMap,uint256) (EnumerableMap.sol#241-244) is never used and should be removed
EnumerableSet.add(EnumerableSet.AddressSet,address) (EnumerableSet.sol#201-203) is never used and should be removed
EnumerableSet.add(EnumerableSet.Bytes32Set,bytes32) (EnumerableSet.sol#147-149) is never used and should be removed
EnumerableSet.at(EnumerableSet.AddressSet,uint256) (EnumerableSet.sol#239-241) is never used and should be removed
EnumerableSet.at(EnumerableSet.Bytes32Set,uint256) (EnumerableSet.sol#185-187) is never used and should be removed
EnumerableSet.contains(EnumerableSet.AddressSet,address) (EnumerableSet.sol#218-220) is never used and should be removed
EnumerableSet.contains(EnumerableSet.Bytes32Set,bytes32) (EnumerableSet.sol#164-166) is never used and should be removed
EnumerableSet.contains(EnumerableSet.UintSet,uint256) (EnumerableSet.sol#273-275) is never used and should be removed
EnumerableSet.length(EnumerableSet.AddressSet) (EnumerableSet.sol#225-227) is never used and should be removed
EnumerableSet.length(EnumerableSet.Bytes32Set) (EnumerableSet.sol#171-173) is never used and should be removed
EnumerableSet.remove(EnumerableSet.AddressSet,address) (EnumerableSet.sol#211-213) is never used and should be removed
EnumerableSet.remove(EnumerableSet.Bytes32Set,bytes32) (EnumerableSet.sol#157-159) is never used and should be removed
SafeMath.add(uint256,uint256) (SafeMath.sol#85-89) is never used and should be removed
SafeMath.div(uint256,uint256) (SafeMath.sol#135-138) is never used and should be removed
SafeMath.div(uint256,uint256,string) (SafeMath.sol#190-193) is never used and should be removed
SafeMath.mod(uint256,uint256) (SafeMath.sol#152-155) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (SafeMath.sol#210-213) is never used and should be removed
SafeMath.mul(uint256,uint256) (SafeMath.sol#116-121) is never used and should be removed
SafeMath.sub(uint256,uint256) (SafeMath.sol#101-104) is never used and should be removed
SafeMath.sub(uint256,uint256,string) (SafeMath.sol#170-173) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (SafeMath.sol#24-28) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (SafeMath.sol#60-63) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (SafeMath.sol#70-73) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (SafeMath.sol#45-53) is never used and should be removed
SafeMath.trySub(uint256,uint256) (SafeMath.sol#35-38) is never used and should be removed
Strings.toString(uint256) (Strings.sol#12-33) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version>=0.6.2<0.8.0 (Address.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (Context.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (ERC165.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (ERC721.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (EnumerableMap.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (EnumerableSet.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (IERC165.sol#3) is too complex
Pragma version>=0.6.2<0.8.0 (IERC721.sol#3) is too complex
Pragma version>=0.6.2<0.8.0 (IERC721Enumerable.sol#3) is too complex
Pragma version>=0.6.2<0.8.0 (IERC721Metadata.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (IERC721Receiver.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (Ownable.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (SafeMath.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (Strings.sol#3) is too complex
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) (Address.sol#53-59):
- (success) = recipient.call{value: amount}() (Address.sol#57)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (Address.sol#114-121):
- (success,returndata) = target.call{value: value}(data) (Address.sol#119)
Low level call in Address.functionStaticCall(address,bytes,string) (Address.sol#139-145):
- (success,returndata) = target.staticcall(data) (Address.sol#143)
Low level call in Address.functionDelegateCall(address,bytes,string) (Address.sol#163-169):
- (success,returndata) = target.delegatecall(data) (Address.sol#167)
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 (ERC721.sol#245) is not in mixedCase
Parameter StarNFTV3.safeTransferFrom(address,address,uint256,bytes)._data (StarNFTV3.sol#94) is not in mixedCase
Parameter StarNFTV3.setTransferable(bool)._transferable (StarNFTV3.sol#216) is not in mixedCase
Parameter StarNFTV3.setName(string)._name (StarNFTV3.sol#223) is not in mixedCase
Parameter StarNFTV3.setSymbol(string)._symbol (StarNFTV3.sol#230) is not in mixedCase
Parameter StarNFTV3.uint2str(uint256)._i (StarNFTV3.sol#253) 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

supportsInterface(bytes4) should be declared external:
- ERC165.supportsInterface(bytes4) (ERC165.sol#35-37)
balanceOf(address) should be declared external:
- ERC721.balanceOf(address) (ERC721.sol#106-109)
name() should be declared external:
- ERC721.name() (ERC721.sol#121-123)
- StarNFTV3.name() (StarNFTV3.sol#107-109)
symbol() should be declared external:
- ERC721.symbol() (ERC721.sol#128-130)
- StarNFTV3.symbol() (StarNFTV3.sol#114-116)
tokenURI(uint256) should be declared external:
- ERC721.tokenURI(uint256) (ERC721.sol#135-151)
- StarNFTV3.tokenURI(uint256) (StarNFTV3.sol#194-201)
tokenOfOwnerByIndex(address,uint256) should be declared external:
- ERC721.tokenOfOwnerByIndex(address,uint256) (ERC721.sol#165-167)
totalSupply() should be declared external:
- ERC721.totalSupply() (ERC721.sol#172-175)
tokenByIndex(uint256) should be declared external:
- ERC721.tokenByIndex(uint256) (ERC721.sol#180-183)
approve(address,uint256) should be declared external:
- ERC721.approve(address,uint256) (ERC721.sol#188-197)
setApprovalForAll(address,bool) should be declared external:
- ERC721.setApprovalForAll(address,bool) (ERC721.sol#211-216)
transferFrom(address,address,uint256) should be declared external:
- ERC721.transferFrom(address,address,uint256) (ERC721.sol#228-233)
- StarNFTV3.transferFrom(address,address,uint256) (StarNFTV3.sol#58-69)
safeTransferFrom(address,address,uint256) should be declared external:
- ERC721.safeTransferFrom(address,address,uint256) (ERC721.sol#238-240)
- StarNFTV3.safeTransferFrom(address,address,uint256) (StarNFTV3.sol#74-85)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (Ownable.sol#54-57)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (Ownable.sol#63-67)
cid(uint256) should be declared external:
- StarNFTV3.cid(uint256) (StarNFTV3.sol#121-123)
isOwnerOf(address,uint256) should be declared external:
- StarNFTV3.isOwnerOf(address,uint256) (StarNFTV3.sol#180-188)
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

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank