# Testnet on Bloxberg **TestNet:** As the name suggests, the Testnet is a network intended strictly for testing and development. Developers use it to try out new features, run tests, and fix bugs without the fear of causing disruption, as it is entirely separate from the Mainnet. This environment typically uses tokens with no real value, allowing developers to simulate transactions and interactions with the system freely. Testnets are crucial for preventing untested or unstable updates from reaching the Mainnet, thereby maintaining system stability and user trust. **TESTNET\_CONTRACT\_ADDRESS:** 0x02882F03097fE8cD31afbdFbB5D72a498B41112c **TESTNET\_HEARTBEAT\_CONTRACT\_ADDRESS:** 0x9B105aefF69Cd26050798d575db17ffc2eAC4E4d **TESTNET\_IMAGE\_REGISTRY:** 0x15D73a742529C3fb11f3FA32EF7f0CC3870ACA31 **TESTNET\_RPC\_URL:** --- # 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.ethernity.cloud/ethernity-node/configuring-the-node/select-the-network/testnet-on-bloxberg.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.