Totem - Smart Contract Audit Report

Summary

Totem Finance is a new project which aims to distribute NFTs and reward NFT holders via a transaction tax on the project's ERC20 token.

We audited Totem's token contract at 10732fc143aa7fb9771a4b0730b6834b92523ff3 on GitHub. It is deployed at 0xae95dC56a480ba3B1830cB760B43633D3f87Aa17 on the Ethereum Mainnet.

The total supply of the token is 4,316,539, delivered to the team uponn deployment.
As of the update date of this report, 60.5% of the tokens have been put up for presale on Unicrypt. 35% of the tokens have been locked by the team for 30 and 90 days. The team currently has control over 4.7% of the token's total supply.
There is a 1% fee on all transfers of the token. This fee will be activated once there is at least one NFT holder.
The fees collected from this mechanism are automatically redistributed among all NFT holders via a loop.
This redistribution loop will increase in cost with each additional NFT holder. As only 100 NFTs can be minted, this may become expensive but will not exceed the block's gas limt.
Logic has been implemented to ensure addresses are properly removed from the _totemOwners array in the NFT contract when their balance is 0.
The project team is exempt from transfer fees.
No ownership-restricted functions are present.
Gas can be saved via marking some functions external instead of public; and by marking some variables constant.
The tokens are ERC20 compliant and the NFTs are ERC721 compliant.
Utilization of SafeMath across all contracts to prevent overflows.

Audit Findings Summary:
No security issues from outside attackers were identified.
As with any presale, ensure trust in the team prior to investing.
KYC: No
Date: March 29th, 2021
Update Date: March 31st, 2021

External Threat Results

Vulnerability Category	Notes	Result
Arbitrary Storage Write	N/A	PASS
Arbitrary Jump	N/A	PASS
Delegate Call to Untrusted Contract	N/A	PASS
Dependence on Predictable Variables	N/A	PASS
Deprecated Opcodes	N/A	PASS
Ether Thief	N/A	PASS
Exceptions	N/A	PASS
External Calls	N/A	PASS
Integer Over/Underflow	N/A	PASS
Multiple Sends	N/A	PASS
Suicide	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

Inheritence Chart

Smart Contract Inheritance

Functions Graph

Smart Contract Graph

Functions Overview



 ($) = payable function
 # = non-constant function
 
 Int = Internal
 Ext = External
 Pub = Public

 +  Context 
    - [Int] _msgSender
    - [Int] _msgData

 + [Int] IERC20 
    - [Ext] totalSupply
    - [Ext] balanceOf
    - [Ext] transfer #
    - [Ext] allowance
    - [Ext] approve #
    - [Ext] transferFrom #

 + [Lib] SafeMath 
    - [Int] add
    - [Int] sub
    - [Int] sub
    - [Int] mul
    - [Int] div
    - [Int] div
    - [Int] mod
    - [Int] mod

 + [Lib] Address 
    - [Int] isContract
    - [Int] sendValue #
    - [Int] functionCall #
    - [Int] functionCall #
    - [Int] functionCallWithValue #
    - [Int] functionCallWithValue #
    - [Int] functionStaticCall
    - [Int] functionStaticCall
    - [Prv] _verifyCallResult

 +  Ownable (Context)
    - [Int]  #
    - [Pub] owner
    - [Pub] renounceOwnership #
       - modifiers: onlyOwner
    - [Pub] transferOwnership #
       - modifiers: onlyOwner

 + [Int] IERC165 
    - [Ext] supportsInterface

 + [Int] IERC721 (IERC165)
    - [Ext] balanceOf
    - [Ext] ownerOf
    - [Ext] safeTransferFrom #
    - [Ext] transferFrom #
    - [Ext] approve #
    - [Ext] getApproved
    - [Ext] setApprovalForAll #
    - [Ext] isApprovedForAll
    - [Ext] safeTransferFrom #

 + [Int] IERC721Metadata (IERC721)
    - [Ext] name
    - [Ext] symbol
    - [Ext] tokenURI

 + [Int] IERC721Enumerable (IERC721)
    - [Ext] totalSupply
    - [Ext] tokenOfOwnerByIndex
    - [Ext] tokenByIndex

 + [Int] IERC721Receiver 
    - [Ext] onERC721Received #

 +  ERC165 (IERC165)
    - [Int]  #
    - [Pub] supportsInterface
    - [Int] _registerInterface #

 + [Lib] EnumerableSet 
    - [Prv] _add #
    - [Prv] _remove #
    - [Prv] _contains
    - [Prv] _length
    - [Prv] _at
    - [Int] add #
    - [Int] remove #
    - [Int] contains
    - [Int] length
    - [Int] at
    - [Int] add #
    - [Int] remove #
    - [Int] contains
    - [Int] length
    - [Int] at
    - [Int] add #
    - [Int] remove #
    - [Int] contains
    - [Int] length
    - [Int] at

 + [Lib] EnumerableMap 
    - [Prv] _set #
    - [Prv] _remove #
    - [Prv] _contains
    - [Prv] _length
    - [Prv] _at
    - [Prv] _get
    - [Prv] _get
    - [Int] set #
    - [Int] remove #
    - [Int] contains
    - [Int] length
    - [Int] at
    - [Int] get
    - [Int] get

 + [Lib] Strings 
    - [Int] toString

 +  TotemNFT (Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable, Ownable)
    - [Pub]  #
    - [Pub] mint #
    - [Int] _mintWithTokenURI #
    - [Pub] totemOwnersNow
    - [Pub] isTotemOwner
    - [Pub] gettotemOwners
    - [Pub] balanceOf
    - [Pub] ownerOf
    - [Pub] name
    - [Pub] symbol
    - [Pub] tokenURI
    - [Pub] baseURI
    - [Pub] tokenOfOwnerByIndex
    - [Pub] totalSupply
    - [Pub] tokenByIndex
    - [Pub] approve #
    - [Pub] getApproved
    - [Pub] setApprovalForAll #
    - [Pub] isApprovedForAll
    - [Pub] transferFrom #
    - [Pub] safeTransferFrom #
    - [Pub] safeTransferFrom #
    - [Int] _safeTransfer #
    - [Int] _exists
    - [Int] _isApprovedOrOwner
    - [Int] _safeMint #
    - [Int] _safeMint #
    - [Int] _mint #
    - [Int] _burn #
    - [Int] _transfer #
    - [Int] _setTokenURI #
    - [Int] _setBaseURI #
    - [Prv] _checkOnERC721Received #
    - [Prv] _approve #
    - [Int] _beforeTokenTransfer #

 +  TotemToken (Context, IERC20, Ownable)
    - [Pub]  #
    - [Pub] name
    - [Pub] symbol
    - [Pub] decimals
    - [Pub] balanceOf
    - [Pub] totalSupply
    - [Pub] transfer #
    - [Pub] allowance
    - [Pub] approve #
    - [Pub] transferFrom #
    - [Pub] increaseAllowance #
    - [Pub] decreaseAllowance #
    - [Pub] accountRewards
    - [Pub] totalFees
    - [Prv] _approve #
    - [Prv] _transfer #
    - [Prv] _developtransfer #
    - [Prv] _transferStandard #
    - [Prv] _distFeeinRef #
    - [Prv] _getValues

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