# Secure Custody Our custody system is designed with a strong focus on security, isolation, and zero key persistence. At its core lies a master secret phrase, securely stored within an internal vault. This phrase is never used directly to derive private keys. Instead, it is combined with hardware-backed cryptographic signatures provided by independent cloud-based Key Management Services (KMS) such as Google Cloud KMS and Amazon KMS. Each signing operation involves a multi-layer signing sequence. This private key exists only ephemerally. It is generated on demand when a transaction needs to be signed and is never stored in any database or persistent memory. Once the transaction is broadcast to the blockchain, the key is immediately discarded. Through this combination of deterministic, multi-signed, and ephemeral key generation, our custody architecture achieves a high level of cryptographic security, redundancy, and resilience while maintaining operational efficiency. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://theonetradeai.gitbook.io/docs/introduction/theone-protocol/secure-custody.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.