# Address format ## Address Format ### Understanding UOMI Addresses UOMI, being built on Substrate and supporting dual Virtual Machine environments, utilizes a unique address system. The blockchain implements the SS58 address format, which is derived from Bitcoin's Base-58-check encoding with specific modifications to support network-specific addressing. A key feature of the SS58 format is its network identifier prefix, which ensures addresses are uniquely associated with the UOMI network. ### Two Address Types Due to UOMI's support for both EVM and Wasm smart contracts, the network operates with two distinct types of addresses: #### 1. Native Address (SS58) * Uses 256 bits * Based on Substrate's SS58 encoding * Used for native blockchain operations and Wasm contracts #### 2. EVM Address (H160) * Uses 160 bits * Begins with "0x" prefix * Compatible with Ethereum-style operations * Used for EVM contract interactions This dual-address system allows UOMI to maintain compatibility with both ecosystems while preserving each environment's unique features and capabilities. --- # 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.uomi.ai/build/address-format.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.