> For the complete documentation index, see [llms.txt](https://pox-chain.gitbook.io/doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pox-chain.gitbook.io/doc/http-api/api-signature-and-broadcast-flow.md).

# API Signature and Broadcast Flow

## Introduction

The Pollux network provides users with a comprehensive set of API calls for interacting with the blockchain. These calls are extensively documented in the API reference page, covering functionalities of Full Node, Solidity Node, and poxWeb. While some API calls operate autonomously to retrieve specific information, others entail adjustments to the user's POX wallet, requiring transaction signing and broadcasting. This guide takes users through an example of POX Balance staking, offering insights into the process flow of API signature and broadcast.

## Stake Balance Example

#### 1. **Create a Transaction**

`/wallet/freezebalancev2` is used to stake a certain amount of POX of the user's address to obtain bandwidth or energy, as well as voting rights. Calling this API will create a staking POX transaction. This API has 3 parameters, namely:

* `owner_address` is the account address.
* `frozen_balance` is the amount of POX staked in denominations of Sun, in integer format.
* `resource` is the type of resource staking for. This can be either `ENERGY` or `BANDWIDTH`, in string format.

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