TapMePet Tap Token - Smart Contract Audit Report
TapMePet Token is building an animal NFT game. TapMePet token is launching an ERC-20 governance token in support of their game.
For this audit we reviewed the project's token contract on GitHub at commit 81ef8720203ee01c11d7ebadb54ccbb8f09e9d0c. Further features are still in development.
Notes of the contract:
Audit Findings Summary
- The total supply of the token at the time of deployment is zero.
- The team has the ability to mint tokens up to the max supply cap of 90 million.
- No other Ownership-protected functions are present.
- The token is designed to be a governance token where 1 token = 1 vote.
- Another contract will be needed to collect votes and execute transactions on behalf of the governance token holders.
- Token holders can delegate their voting rights to any address. To save gas, users can also do so using an EIP-712 signature.
- There are no fees for transferring the tokens.
- The contract includes _burn and _burnFrom functions that are unused. These can be safely removed.
- Utilization of SafeMath to prevent overflows.
- No issues from external attackers were identified.
- As with any presale, ensure trust in the team prior to investing.
- Date: September 28th, 2021.
External Threat Results
|Arbitrary Storage Write||N/A||PASS|
|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 = Internal Ext = External Pub = Public + Context - [Int]
# - [Int] _msgSender - [Int] _msgData + Ownable (Context) - [Int] # - [Pub] owner - [Pub] renounceOwnership # - modifiers: onlyOwner - [Pub] transferOwnership # - modifiers: onlyOwner - [Int] _transferOwnership # + [Int] IBEP20 - [Ext] totalSupply - [Ext] decimals - [Ext] symbol - [Ext] name - [Ext] getOwner - [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 - [Int] min - [Int] sqrt + [Lib] Address - [Int] isContract - [Int] sendValue # - [Int] functionCall # - [Int] functionCall # - [Int] functionCallWithValue # - [Int] functionCallWithValue # - [Prv] _functionCallWithValue # + BEP20 (Context, IBEP20, Ownable) - [Pub] # - [Ext] getOwner - [Pub] name - [Pub] decimals - [Pub] symbol - [Pub] totalSupply - [Pub] balanceOf - [Pub] transfer # - [Pub] allowance - [Pub] approve # - [Pub] transferFrom # - [Pub] increaseAllowance # - [Pub] decreaseAllowance # - [Int] _transfer # - [Int] _mint # - [Int] _burn # - [Int] _approve # - [Int] _burnFrom # + TapToken (BEP20) - [Pub] mint # - modifiers: onlyOwner - [Ext] delegates - [Ext] delegate # - [Ext] delegateBySig # - [Ext] getCurrentVotes - [Ext] getPriorVotes - [Int] _delegate # - [Int] _moveDelegates # - [Int] _writeCheckpoint # - [Int] safe32 - [Int] getChainId