# Order of Txns The most important thing that consensus is trying to solve, whether it's blockchain or any kind of distributed system, is to get a sequence of transactions (or events) that all nodes agree on. There are many types of consensus used, such as PoW (Proof of Work) and PoS (Proof of Stake). All of them are slow and costly. In the TEA Project, we use the physical value of time from GPS satellites as the source of timestamps. All events attach a TPM protected timestamp when sending to different distributed replicas. All replicas can get the same order regardless of geolocation and network latency. --- # 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://dev.teaproject.org/z_glossary/order_of_txns.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.