Natmin Token (NAT) security audit, conducted by the Callisto Network Security Department in November 2018.
Natmin (NAT) Specificities
Audit Request
This is an ERC20/ERC223 token contract.
Source Code:
Disclosure policy:
Platform:
ETH.
Complexity:
Low.
Natmin (NAT) Smart Contract Security Audit Report
Are Your Funds Safe?
1. In scope
- NatminToken.sol github commit hash a912bd64f25fdbc6420e2627cb3c20373002b7e7.
2. Findings
In total, 2 issues were reported including:
-
2 low severity issues.
2.1. Transfer Event
Severity: low.
Description:
In the constructor a token transfer should be emitted when assigning the _totalSupply to the constractOwner to comply with ERC20 requirement.
Code snippet:
https://github.com/NatminPureEscrow/Token/blob/master/contracts/NatminToken.sol#L116
2.2. Known Issue of ERC20 Standard
Severity: low.
Description:
This is just a reminder for the contract developers (the described ERC20 issue is well-known and well documented).
It is possible to double withdrawal attack. More details here.
Code snippet:
https://github.com/NatminPureEscrow/Token/blob/master/contracts/NatminToken.sol#L231
https://github.com/NatminPureEscrow/Token/blob/master/contracts/NatminToken.sol#L231
3. Conclusion
The contract is safe to deploy.
4.Revealing audit reports
https://gist.github.com/yuriy77k/76c8ff297165a8fe20925fe22ff221cd
https://gist.github.com/yuriy77k/0a923e3b3dbe8a174087d876b74a968d
https://gist.github.com/yuriy77k/5b58e9b2560c96f625634cd8da780e5c
Appendix
Smart Contract Audits by Callisto Network.
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