> For the complete documentation index, see [llms.txt](https://docs.ethernity.cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ethernity.cloud/ethernity-node-quickstart/blockchain.md).

# Blockchain Settings

#### Bloxberg

Ethernity Cloud runs on the bloxberg blockchain, an Ethereum-compatible PoA chain (chain ID 8995). The smart contract source can be reviewed here:\
<https://github.com/ethernity-cloud/pox-smart-contract>

Proof of eXecution (PoX) contract addresses on bloxberg:

* **Mainnet:** [0x549A6E06BB2084100148D50F51CF77a3436C3Ae7](https://blockexplorer.bloxberg.org/address/0x549A6E06BB2084100148D50F51CF77a3436C3Ae7)
* **Testnet:** [0x02882F03097fE8cD31afbdFbB5D72a498B41112c](https://blockexplorer.bloxberg.org/address/0x02882F03097fE8cD31afbdFbB5D72a498B41112c)

Ethernity Cloud also supports Polygon (mainnet and Amoy testnet), IoTeX Testnet, Ethereum Sepolia, and LitVM LiteForge. See **Configure the Node -> Select the network** for the full list and how to choose one.

Running a node requires two blockchain wallets (keypairs). One is used to submit transactions by the Data Processor and is used outside the TEE enclave. The other is used by the Results Processor to submit transactions containing results of the processing and is used inside the TEE enclave.

To generate and fund a blockchain wallet please check our section on the topic: