How do you know if a safe is really fireproof?

As a financial professional dealing with cryptocurrencies, I often find myself in situations where security and safety are paramount. But, let's pivot for a moment and consider a more tangible form of security - the fireproof safe. How does one truly verify if a safe is fireproof? It's not as simple as glancing at a label or reading a manufacturer's claims. One must delve deeper, looking for independent testing certifications such as Underwriters Laboratories (UL) ratings. These ratings provide objective measures of a safe's ability to withstand extreme temperatures and resist damage. Additionally, the materials used in the construction of the safe, such as steel gauge and fireboard thickness, can indicate its overall durability. Furthermore, considering the warranty and return policies of the seller adds another layer of assurance. In essence, knowing if a safe is truly fireproof requires a comprehensive approach that considers not just claims but also verifiable evidence and the trustworthiness of the supplier.