Smart Contract Audit Report
Yuna Token is a new ERC-20 token on Ethereum.
For this audit, we reviewed the project team's YunaToken contract at 0x1C261D5B5566BBB489d93622D68a7D7964C72b0A on the Ethereum Mainnet.
No findings were identified, though some centralized aspects are present.
Date: June 1st, 2023.
- The total supply of the token is currently 10 billion [10,000,000,000] $YUNA.
- No mint functions are accessible beyond deployment.
- Any user can burn their own tokens to reduce the total supply at any time.
- At the time of writing this report, 100% of the total supply belongs to the owner.
- Trading must be enabled by the team in order for all transfers to take place on the platform. Only whitelisted addresses can participate in transfers when trading is disabled.
- The contract enforces a minimum holding amount which prevents a transfer from occurring if the sender's balance will be less than the minimum amount set by the team after the transfer occurs.
- The contract features an anti-dump mechanism that ensures the total number of tokens sold or transferred by a user within the specified anti-dump time interval does not exceed the contract's current "anti-bear" limit. This limit is a percentage (determined by the owner) of the total number of tokens in the liquidity pool address.
- If the anti-dump time interval has passed since the user's last sell or transfer, the number of tokens sold or transferred in a single transaction must not exceed the contract's current anti-bear limit.
- As the contract is implemented with Solidity v0.8.x, it is protected from overflows/underflows.
- The contract complies with the ERC-20 token standard.
- The owner can set the minimum holding amount to any value at any time.
- The owner can pause/unpause all transfers at any time.
- The owner can enable/disable the anti-dump mechanism at any time.
- The owner can set the anti-dump threshold percentage and anti-dump time interval to any values at any time.
- The owner can add/remove accounts from the contract's whitelist at any time.
- The owner can update the Liquidity pool address used in the contract at any time.
|Arbitrary Jump/Storage Write||N/A||PASS|
|Centralization of Control||
|Delegate Call to Untrusted Contract||N/A||PASS|
|Dependence on Predictable Variables||N/A||PASS|
|Improper Authorization Scheme||N/A||PASS|
|Outdated Compiler Version||N/A||PASS|
|Overall Contract Safety||WARNING|
($) = payable function # = non-constant function Int = Internal Ext = External Pub = Public + Context - [Int] _msgSender - [Int] _msgData + Ownable (Context) - [Pub]
# - [Pub] owner - [Pub] renounceOwnership # - modifiers: onlyOwner - [Pub] transferOwnership # - modifiers: onlyOwner - [Int] _transferOwnership # + [Int] IERC20 - [Ext] totalSupply - [Ext] balanceOf - [Ext] transfer # - [Ext] allowance - [Ext] approve # - [Ext] transferFrom # + [Int] IERC20Metadata (IERC20) - [Ext] name - [Ext] symbol - [Ext] decimals + ERC20 (Context, IERC20, IERC20Metadata) - [Pub] # - [Pub] name - [Pub] symbol - [Pub] decimals - [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] _beforeTokenTransfer # - [Int] _afterTokenTransfer # + YunaToken (Ownable, ERC20) - [Pub] # - modifiers: ERC20 - [Pub] whitelistAddr # - modifiers: onlyOwner - [Pub] setUniswap # - modifiers: onlyOwner - [Ext] setBearRules # - modifiers: onlyOwner - [Pub] setMevRules # - modifiers: onlyOwner - [Int] _beforeTokenTransfer # - [Ext] burn # - [Int] _antiBearLimit
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What is a SourceHat Audit?
Typically, a smart contract audit is a comprehensive review process designed to discover logical errors, security vulnerabilities, and optimization opportunities within code. A SourceHat Audit takes this a step further by verifying economic logic to ensure the stability of smart contracts and highlighting privileged functionality to create a report that is easy to understand for developers and community members alike.
How Do I Interpret the Findings?
Each of our Findings will be labeled with a Severity level. We always recommend the team resolve High, Medium, and Low severity findings prior to deploying the code to the mainnet. Here is a breakdown on what each Severity level means for the project:
- High severity indicates that the issue puts a large number of users' funds at risk and has a high probability of exploitation, or the smart contract contains serious logical issues which can prevent the code from operating as intended.
- Medium severity issues are those which place at least some users' funds at risk and has a medium to high probability of exploitation.
- Low severity issues have a relatively minor risk association; these issues have a low probability of occurring or may have a minimal impact.
- Informational issues pose no immediate risk, but inform the project team of opportunities for gas optimizations and following smart contract security best practices.