# Advanced If you are familiar with CCMP protocol you can dive deeper to better understand how the Signer Service works under the hood. Consider the [Threshold Signature](/for-developers/cross-chain-messaging-protocol/advanced/threshold-signature.md) section to become familiar with the TSS protocol, which is used by our [Signer Service](/for-developers/cross-chain-messaging-protocol/how-it-works/signer-service.md). Also, take a look at the [Hosted TSS Signer](/for-developers/cross-chain-messaging-protocol/advanced/hosted-tss-signer.md) section to know how and why Hosted TSS Signer can be used for your dApp to make it even more secure. --- # 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://docs.bitoftrade.com/for-developers/cross-chain-messaging-protocol/advanced.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.