APD Info
APChain is a next-generation Layer 1 public blockchain built around AI-native capabilities, offering full EVM compatibility. Through its PoS + physical computing power staking model, it integrates computing power, assets, and payments to create a secure and efficient global settlement layer.
TrustNet Score
The TrustNet Score evaluates crypto projects based on audit results, security, KYC verification, and social media presence. This score offers a quick, transparent view of a project's credibility, helping users make informed decisions in the Web3 space.
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Security Assessments
Summary and Final Words
No crucial issues found
The contract does not contain issues of high or medium criticality. This means that no known vulnerabilities were found in the source code.
Contract owner can mint
It is possible to mint new tokens.
Contract owner can blacklist addresses
It is possible to lock user funds by blacklisting addresses.
Contract owner cannot set high fees
The fees, if applicable, can be a maximum of 25% or lower. The contract can therefore not be locked. Please take a look in the comment section for more details.
Token transfer can be locked
Owner can lock user funds with owner functions.
Token cannot be burned
There is no burning within the contract without any allowances
Ownership is not renounced
The owner retains significant control, which could potentially be used to modify key contract parameters.
Contract is not upgradeable
The contract does not use proxy patterns or other mechanisms to allow future upgrades. Its behavior is locked in its current state.
Scope of Work
This audit encompasses the evaluation of the files listed below, each verified with a SHA-1 Hash. The team referenced above has provided the necessary files for assessment.
The auditing process consists of the following systematic steps:
- Specification Review: Analyze the provided specifications, source code, and instructions to fully understand the smart contract's size, scope, and functionality.
- Manual Code Examination: Conduct a thorough line-by-line review of the source code to identify potential vulnerabilities and areas for improvement.
- Specification Alignment: Ensure that the code accurately implements the provided specifications and intended functionalities.
- Test Coverage Assessment: Evaluate the extent and effectiveness of test cases in covering the codebase, identifying any gaps in testing.
- Symbolic Execution: Analyze the smart contract to determine how various inputs affect execution paths, identifying potential edge cases and vulnerabilities.
- Best Practices Evaluation: Assess the smart contracts against established industry and academic best practices to enhance efficiency, maintainability, and security.
- Actionable Recommendations: Provide detailed, specific, and actionable steps to secure and optimize the smart contracts.
A file with a different Hash has been intentionally or otherwise modified after the security review. A different Hash may indicate a changed condition or potential vulnerability that was not within the scope of this review.
Final Words
The following provides a concise summary of the audit report, accompanied by insightful comments from the auditor. This overview captures the key findings and observations, offering valuable context and clarity.
Ownership Privileges
- The MINTER_ROLE can mint an indefinite amount of tokens from the contract.
- The DEFAULT_ADMIN_ROLE can add or remove a pair from the contract.
- The DEFAULT_ADMIN_ROLE can set the swap tax ratio up to 100%.
- The DEFAULT_ADMIN_ROLE can blacklist any wallet from transferring tokens.
- The DEFAULT_ADMIN_ROLE can remove the wallets from the blacklisted mapping.
Note - This Audit report consists of a security analysis of the APD_ERC20 smart contract. This analysis did not include functional testing (or unit testing) of the contract’s logic. Moreover, we only audited the mentioned contract for the APD team. Other contracts associated with the project were not audited by our team. We recommend investors do their own research before investing.
Files and details
Functions
public
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State variables
public
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Total lines
of code
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Capabilities
Hover on items
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Findings and Audit result
medium Issues | 3 findings
Pending
#1 medium Issue
Fee Setting Capability and Centralization Risk
The APD_ERC20.sol contract contains a critical centralization risk within its setSwapTaxRatio function, which allows an administrator with the DEFAULT_ADMIN_ROLE to unilaterally set transaction taxes to punitive levels—up to 100% for buys and 99.99% for sells. This unchecked power creates a "soft rug-pull" vector, where a malicious or compromised admin could effectively trap user funds or drain liquidity by raising fees to their maximums without any prior notice. This capability undermines trust in the protocol, as token holders' assets are subject to the arbitrary control of a single entity, posing a direct threat to the financial security of investors.
Pending
#2 medium Issue
Centralized and Arbitrary Blacklisting Power
The smart contract grants an administrator holding the DEFAULT_ADMIN_ROLE the unilateral authority to blacklist any user address through the addToBlacklist function. This presents a severe centralization risk, as it allows a single entity to freeze a user's assets and prevent them from transferring, approving, or otherwise interacting with their tokens. Such power can be abused, is not subject to community oversight, and acts as a single point of failure. If the admin key is compromised, an attacker could indiscriminately freeze the funds of any token holder, undermining the core principle of user asset sovereignty on the blockchain.
Pending
#3 medium Issue
Unlimited Minting Capability and Centralization Risk
The smart contract design includes a mint function that allows addresses with the MINT role to create an arbitrary number of new tokens, as there is no programmed maximum supply cap. The authority to grant this powerful MINT role is held by the DEFAULT_ADMIN_ROLE, creating a significant centralization risk. A malicious or compromised administrator could grant themselves or another address the ability to mint, leading to hyperinflation that would dilute the value of existing tokens and effectively steal value from all other holders. This unchecked minting capability fundamentally undermines the token's economic stability and places user investments at the discretion of a single administrative entity.
low Issues | 1 findings
Pending
#1 low Issue
Missing zero or dead address check
It is recommended to check that the address cannot be set to zero or dead address.
informational Issues | 3 findings
Pending
#1 informational Issue
Floating pragma solidity version.
Adding the constant version of solidity is recommended, as this prevents the unintentional deployment of a contract with an outdated compiler that contains unresolved bugs.
Pending
#2 informational Issue
Function that are not used (Dead code).
It is recommended to remove the unused code from the contract.
Pending
#3 informational Issue
Remove safemath library
The compiler version above 0.8.0 has the ability to control arithmetic overflow/underflow. It is recommended to remove the unwanted code in order to avoid high gas fees.