# Transaction Details Aptos is a per-transaction versioned database. When transactions are executed, the resulting state of each transaction is stored separately and thus allows for more granular data access. This is why on Aptscan, you will see "version" instead of transaction labeling. There are 3 types of transactions on Aptos, that are profiled on Aptscan.ai * User Transaction * State Checkpoint Transaction * Block Metadata Transaction In this doc, we will mainly focus on User Transaction, since its the page with the most information, and you will also se repetition with State Checkpoint and Block Metadata as well. --- # 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.aptscan.ai/browsing-the-site/transaction-details.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.