# Unlock Time #### The Basics A special transaction where the recipient can only spend the funds after a future date, as set by the sender. Unlock time allows you to send a transaction to someone, such that they can not spend it until after a certain number of blocks, or until a certain time. Note that this works differently than Bitcoin's [nLockTime](https://en.bitcoin.it/wiki/NLockTime), in which the transaction is not valid until the given time. --- # 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://wiki.havenprotocol.org/overview/unlock-time.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.