# Architecture ![](https://web.archive.org/web/20211022185005im_/https://bitcoinsv.io/wp-content/uploads/2020/09/architecture2-1024x514.png) External (p2p network): * discovers and connects to other nodes * send and receive messages to and from other nodes Internal: * exposes RPC to pool software and other tools * optional REST Interface can be enabled External (stratum protocol): * exposed API for ASIC Miners to connect and start mining block headers * send jobs to ASIC Miners * receive valid shares or valid block headers Internal (Bitcoind RPC): * connect to Bitcoind RPC to submit transactions * receive transaction response (eg. txid) * provide event notifications for double spends and Merkle Proofs. --- # 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.bsvblockchain.org/network-topology/nodes/sv-node/system-architecture.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.