COIN22 Info

coin22.org

COIN22 will allow projects to Submit Token and update the project's information for free.

Overall Score
80.74
Poor Excellent
COIN22 Logo

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TrustNet DataPulse

Smart Contract Audit

Static Analysis Dynamic Analysis Symbolic Execution SWC Check Manual Review
Contract address
0x400B...Ac26
Network
BNB Smart Chain - Mainnet
License N/A
Compiler N/A
Type N/A
Language Solidity
Onboard date 2022/12/07
Revision date In progress

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 cannot mint

It is not possible to mint new tokens.

Contract owner cannot blacklist addresses.

It is not 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.

Contract cannot be locked

Owner cannot lock any user funds.

Token cannot be burned

There is no burn function within the contract.

Ownership is not renounced

Contract can be manipulated by owner functions.

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:

  1. Specification Review: Analyze the provided specifications, source code, and instructions to fully understand the smart contract's size, scope, and functionality.
  2. Manual Code Examination: Conduct a thorough line-by-line review of the source code to identify potential vulnerabilities and areas for improvement.
  3. Specification Alignment: Ensure that the code accurately implements the provided specifications and intended functionalities.
  4. Test Coverage Assessment: Evaluate the extent and effectiveness of test cases in covering the codebase, identifying any gaps in testing.
  5. Symbolic Execution: Analyze the smart contract to determine how various inputs affect execution paths, identifying potential edge cases and vulnerabilities.
  6. Best Practices Evaluation: Assess the smart contracts against established industry and academic best practices to enhance efficiency, maintainability, and security.
  7. 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:

  • Update liquidity providing state and liquidity threshold within the limitation
  • Set taxes and enable trading but cannot disable it
  • Update deadline, treasury wallet, and cool down period
  • Include/Exclude wallets from fees
  • Update max transaction limit

Files and details

Functions
public

/

State variables
public

/

Total lines
of code

/

Capabilities
Hover on items

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Findings and Audit result

low Issues | 3 findings

Pending

#1 low Issue
Missing Events Arithmetic (events-maths)
COIN22.sol
L658-662
L692-696
L703-707
L719-722
Description

Emit an event for critical parameter changes.

Pending

#2 low Issue
Missing Zero Address Validation (missing-zero-check)
COIN22.sol
L680
Description

Check that the address is not zero.

Pending

#3 low Issue
Modifiers that can return the default value (incorrect-modifier)
COIN22.sol
L427-433
Description

All the paths in a modifier must execute `_` or revert.

optimization Issues | 2 findings

Pending

#1 optimization Issue
State variables that could be declared constant (constable-states)
COIN22.sol
L407
Description

Add the `constant` attributes to state variables that never change.

Pending

#2 optimization Issue
Public function that could be declared external (external-function)
COIN22.sol
L88-90
L96-98
L120-122
L139-147
L152-160
L169-172
L187-199
L213-220
L236-246
L342-344
L346-349
Description

Use the `external` attribute for functions never called from the contract.

informational Issues | 2 findings

Pending

#1 informational Issue
Functions that are not used (dead-code)
COIN22.sol
L16-19
Description

Remove unused functions.

Pending

#2 informational Issue
Uninitialized local variables (uninitialized-local)
COIN22.sol
L533
L535
L532
Description

Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.