The OpenServ token contract implements a standard ERC-20 interface with additional features for anti-whale/anti-bot measures, transaction fees, and an automated swap-and-liquify mechanism. The contract utilizes an Ownable pattern, granting the deployer significant control over token parameters, including the ability to blacklist addresses and adjust transaction fees and limits. A critical limitation of this audit is that the provided _transfer function was truncated, preventing a full assessment of the fee application and balance update logic. Despite this, the defined mechanisms and owner's control present notable risks.

On-chain security analysis — is it a scam or legit?
Is OpenServ Safe?
Not verified
This record has not gone through deep verification and is not being monitored. The score is a dated snapshot — the token’s risk can change at any time.Own this token? Put it under verification →The OpenServ token contract implements a standard ERC-20 interface with additional features for anti-whale/anti-bot measures, transaction fees, and an automated swap-and-liquify mechanism.
Read the full analysis- Ownership not renounced — Multisig
- Top-10 concentration > 20%
- Liquidity not locked
- LP top1 unlocked holder = 99.9%
- LP top3 unlocked holders = 100.0%
- 1 High finding(s) from audit
- 2 Medium finding(s) from audit
- 2 Low finding(s) from audit
Exact factors
- Ownership NOT renounced — Multisig (2-of-5)
- Top-10 concentration > 20% (41.8% total → 20.8% effective; 6.9% in EOAs, 34.9% in contracts — mild)
- Liquidity NOT locked (owner can withdraw — rug-pull risk)
- LP top1 unlocked holder = 99.9% (exit-liquidity risk, pool = 97% of DEX liquidity)
- LP top3 unlocked holders = 100.0% (exit-liquidity risk, pool = 97% of DEX liquidity)
- 1 High finding(s) from audit
- 2 Medium finding(s) from audit
- 2 Low finding(s) from audit
Each factor is an on-chain fact recorded at the time of this analysis. The score is computed from them by a deterministic function, so the same contract returns the same score for anyone who runs the audit. How scores are computed
Security Checklist
as of audit · Sep 4Holders
as of audit · Sep 4, 2026- Contractstreasury, vesting, bridge, staking34.9%
- Walletsanonymous holders, free to sell6.9%
- Everyone elsethe rest of the supply58.2%
How holder types affect the score
Share held by contracts — treasury, vesting, bridge or staking — is discounted against share held by wallets when the score is computed: a contract cannot decide to sell the way an anonymous holder can, though it can still be drained or voted to sell. Effective concentration is the figure the risk score is actually calculated from.
Holder balances as recorded by the audit of Sep 4, 2026
Liquidity
as of audit · Sep 4The risk score reads depth across every pair.
The LP tokens of the analysed pool are not locked or burned, so whoever holds them can withdraw that liquidity.
0x42ca…f1680x09b1…6c640x6c3e…ac1d0x51f1…21890x46a3…bc210x9135…a98bA privileged address — the deployer, the owner, or the token contract itself — is among these holders, so that party can withdraw liquidity.
Security Findings
HighCentralized Control and Blacklisting Capability
The Ownable contract grants the owner extensive control over critical parameters and the ability to blacklist addresses. This includes setting transaction limits (maxTransactionAmount, maxWallet), fees (buyTotalFees, sellTotalFees, treasuryFee), and preventing transfers for any address via addRemoveBlackList. This centralization poses a significant trust risk, as a malicious or compromised owner could manipulate the token's economy or censor users (7.3 Access Control, 7.4 Economic, 7.8 Operations).H-01
Issue
The Ownable contract grants the owner extensive control over critical parameters and the ability to blacklist addresses. This includes setting transaction limits (maxTransactionAmount, maxWallet), fees (buyTotalFees, sellTotalFees, treasuryFee), and preventing transfers for any address via addRemoveBlackList. This centralization poses a significant trust risk, as a malicious or compromised owner could manipulate the token's economy or censor users (7.3 Access Control, 7.4 Economic, 7.8 Operations).
Fix
Consider implementing a multi-signature wallet for ownership to distribute control and reduce the risk of a single point of failure. For blacklisting, evaluate if such a powerful censorship mechanism is truly necessary for the protocol's long-term vision, and if so, consider a decentralized governance mechanism for its activation.
Status
Unresolved
MediumHigh and Configurable Transaction Fees
The contract implements buyTotalFees (5%), sellTotalFees (5%), and treasuryFee (10%), which are high and can be updated by the owner. While common in certain token designs, such high and mutable fees can deter legitimate usage and introduce uncertainty for users. The owner's ability to change these at will creates a potential for abuse or unexpected changes in token economics. The exact application of these fees could not be fully verified due to the truncation of the _transfer function (7.4 Economic).M-01
Issue
The contract implements buyTotalFees (5%), sellTotalFees (5%), and treasuryFee (10%), which are high and can be updated by the owner. While common in certain token designs, such high and mutable fees can deter legitimate usage and introduce uncertainty for users. The owner's ability to change these at will creates a potential for abuse or unexpected changes in token economics. The exact application of these fees could not be fully verified due to the truncation of the _transfer function (7.4 Economic).
Fix
Clearly communicate the fee structure and the owner's ability to modify it to users. Consider implementing a time-lock or a governance vote for fee changes to provide transparency and reduce immediate manipulation risk. Ensure the complete _transfer function is available for audit to verify correct fee application.
Status
Unresolved
MediumPotential for Price Impact from swapBack Mechanism
The swapBack function is triggered when the contract's token balance reaches SwapTokensAtAmount. If SwapTokensAtAmount is set too low relative to the available liquidity on Uniswap, frequent swaps could occur. This can lead to increased transaction costs, higher slippage, and potential negative price impact, especially during periods of low liquidity or high trading volume. The implementation of swapBack was truncated, limiting full analysis (7.4 Economic).M-02
swapBack MechanismIssue
The swapBack function is triggered when the contract's token balance reaches SwapTokensAtAmount. If SwapTokensAtAmount is set too low relative to the available liquidity on Uniswap, frequent swaps could occur. This can lead to increased transaction costs, higher slippage, and potential negative price impact, especially during periods of low liquidity or high trading volume. The implementation of swapBack was truncated, limiting full analysis (7.4 Economic).
Fix
Carefully monitor and adjust SwapTokensAtAmount based on liquidity and trading volume to minimize negative price impact. Consider implementing a minimum time interval between swapBack calls or a maximum swap amount to prevent excessive market activity. Ensure the complete swapBack function is available for audit to verify its implementation details.
Status
Unresolved
LowLack of Emergency Pause Mechanism
The contract lacks a mechanism to globally pause transfers or critical functions in case of an emergency (e.g., a major exploit, critical bug discovery, or extreme market instability). While the owner can blacklist individual addresses, a global pause would offer a more robust and immediate response to widespread issues affecting the entire protocol (7.8 Operations).L-01
Issue
The contract lacks a mechanism to globally pause transfers or critical functions in case of an emergency (e.g., a major exploit, critical bug discovery, or extreme market instability). While the owner can blacklist individual addresses, a global pause would offer a more robust and immediate response to widespread issues affecting the entire protocol (7.8 Operations).
Fix
Consider implementing a pause functionality that can halt transfers or other critical operations in an emergency. This mechanism should ideally be controlled by a multi-signature wallet or a time-locked governance process to prevent arbitrary activation.
Status
Unresolved
LowReliance on pragma experimental ABIEncoderV2
The contract uses pragma experimental ABIEncoderV2;. While this pragma is widely used and generally stable in recent Solidity versions (0.8.x), it is still marked as experimental. In very rare cases, experimental features might have undiscovered edge cases or subtle bugs that could lead to unexpected behavior (7.2 Code Security).L-02
pragma experimental ABIEncoderV2Issue
The contract uses pragma experimental ABIEncoderV2;. While this pragma is widely used and generally stable in recent Solidity versions (0.8.x), it is still marked as experimental. In very rare cases, experimental features might have undiscovered edge cases or subtle bugs that could lead to unexpected behavior (7.2 Code Security).
Fix
While the risk is low in Solidity 0.8.x, it's generally good practice to avoid experimental pragmas if possible. If ABIEncoderV2 is not strictly necessary for specific data structures, consider removing it. Otherwise, ensure thorough testing of all functions that might implicitly or explicitly use this encoder.
Status
Unresolved
InfoImmutability of Contract Logic
The contract is not designed with an upgrade mechanism (e.g., proxy pattern). This means that any discovered bugs, vulnerabilities, or desired feature enhancements cannot be implemented without deploying an entirely new contract and migrating users. This is a complex and costly process that can fragment liquidity and user base (7.7 Upgrades).I-01
Issue
The contract is not designed with an upgrade mechanism (e.g., proxy pattern). This means that any discovered bugs, vulnerabilities, or desired feature enhancements cannot be implemented without deploying an entirely new contract and migrating users. This is a complex and costly process that can fragment liquidity and user base (7.7 Upgrades).
Fix
Acknowledge the immutability of the contract. For future projects, consider using an upgradeable proxy pattern (e.g., UUPS) if the ability to fix bugs or add features post-deployment is desired. For this contract, ensure all logic is thoroughly tested before deployment, as changes will not be possible.
Status
Unresolved
Analysis
AI Copilotas of audit · Sep 4The contract implements standard ERC-20 functionality with custom transfer logic, including anti-whale/bot limits and fee mechanisms. The use of SafeERC20 for external transfers is a good practice (7.2 Code Security). However, the provided _transfer function was truncated, preventing a complete analysis of its fee application and balance update logic. The contract also uses pragma experimental ABIEncoderV2, which, while common, is an experimental feature (7.2 Code Security).
The contract exhibits a high degree of centralization, with the owner possessing extensive control over critical economic parameters and user access (7.3 Access Control, 7.4 Economic). The owner can blacklist addresses, effectively censoring users, and can unilaterally adjust transaction fees and limits. The swapBack mechanism, while intended for liquidity management, could lead to price impact if not carefully managed (7.4 Economic).
The contract is not designed with an upgrade mechanism, meaning its logic is immutable once deployed (7.7 Upgrades). This eliminates upgrade-specific risks but also prevents any future bug fixes or feature enhancements without a full redeployment and migration process.
It is strongly recommended to decentralize control where possible, especially regarding blacklisting capabilities, or implement a multi-signature wallet for critical administrative functions to mitigate single points of failure.
Thoroughly review and complete the _transfer function to ensure correct fee application and balance updates, and consider the economic implications of high, mutable fees and the swapBack mechanism. Implement an emergency pause functionality to provide a safety net against unforeseen issues.
Contract & Record
Free for any token on the record. It links to this page and always shows the current score and the date it was checked.
- Aug 31, 202670High
Score changes are recorded as dated snapshots — history is append-only and cannot be edited.
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