# ReceiptTeller ReceiptTeller is a specialized contract that extends WormholeTeller to handle cross-chain message receipts and bridging operations. It acts as an intermediary that can operate in two modes: as a sender or receiver of cross-chain messages, primarily dealing with vault share transfers across different blockchain networks. ReceiptTeller are crypto-economically secured, have fees embedded into them and work in tandem with RouterTeller. --- # 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.moremarkets.xyz/protocol-concepts/tellers/receiptteller.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.