Security Audit Report for Mantle's Fiat24 Contracts

The target of this audit is the private code repository of Fiat24 Contracts of Mantle. Fiat24 is a digital banking platform built on blockchain technology that bridges banking services with the crypto ecosystem. The platform provides NFT-based digital accounts as unique identifiers for users, with each account represented as an ERC-721 token featuring customizable features and status management. Fiat24 supports multiple fiat currencies through tokenized representations, including USD24, EUR24, CHF24, GBP24, and CNH24, with real-time exchange rates and seamless cross-currency transactions. The platform features crypto deposit functionality that enables users to deposit USDC and other cryptocurrencies, automatically converting them to fiat tokens at current market rates.

Please refer to the report for the detailed audit scope.

Our audit methodology employs automated vulnerability scans, manual verification, and business logic analysis to uncover potential security issues coupled with gas and code quality optimization recommendations.

In summary, we have found that the codebase contains 1 high-risk issues that require prompt attention. In addition, we have identified other non-critical issues as well as security suggestions that should be considered. The Fiat24 Contracts team has addressed these issues promptly. It is important to note that our audit covers only the final reported versions of the codebase. Any subsequent updates would require a re-evaluation.