# Chromia SRB

CHRSRB is a benchmark that represents the annualized staking rate for the CHR token.

CHRSRB is calculated and published by Staking Rewards via the [Chromia Profile](https://www.stakingrewards.com/asset/chromia) and [Data API](https://www.stakingrewards.com/data-api).

> **TL;DR:** Chromia staking rewards are determined by a protocol-set annual percentage rate from the staking smart contracts on Ethereum and BNB Chain. The rate is obtained from the contract's getActiveYieldRate method for the current epoch.

$$
CHRSRB = apr
$$

{% hint style="info" %}
Chromia is offering a smart contract staking solution while the mainnet is not live\
The mainnet is scheduled to go live in Q2 2024. The reward rate formula will be updated when that happens.
{% endhint %}

<table data-full-width="false"><thead><tr><th width="141">Formula key</th><th width="158">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>apr</td><td>Annual Percentage Rate</td><td>The reward rate is set manually by the protocol in both smart contracts (ETH and BNB).<br><br>This is obtained by calling the method <em>getActiveYieldRate</em> from the contract <a href="https://etherscan.io/address/0xc7b0f970c1efbb181194fc15ccd5c4a2c2ab863b"><em>0xdD8bd1a9927aB550Cf2fC0a9da14702F9c09ac88</em> </a>with the current epoch as a parameter. The current epoch is obtained by calling the method <em>getCurrentEpoch</em> from the same contract.<br><br>This is a temporary reward distribution to early supporters of the protocol. The reward rate will be.</td></tr></tbody></table>

***

### CHR Real Reward Rate (CHRSRB^R)

The real reward rate calculates the CHRSRB adjusted for inflation in the network.

$$
CHRSRB^R = 1+CHRSRB /(1+i)-1
$$

<table data-full-width="false"><thead><tr><th width="141">Formula Key</th><th width="158">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>i</td><td>Inflation Rate</td><td>Total emission of new tokens, with vested contracts plus staking rewards</td></tr></tbody></table>

***

Data Sources:

* Chromia Staking Smart Contracts:
  * [Ethereum](https://etherscan.io/address/0xC7b0F970c1EFBB181194Fc15ccD5C4a2c2Ab863B)
  * [Binance-Smart-Chain](https://bscscan.com/address/0x6414FbBf1CC9d9253125e106435619577bAAc2aC)

***

#### References:

* [What is Chromia?](https://chromia.com/)

***

:books: [Learn more about CHR Staking](https://www.stakingrewards.com/asset/chromia)

:bar\_chart: [Calculate your CHR Staking Rewards](https://www.stakingrewards.com/calculator?asset=chromia)

:gear: [Access historic Chromia Staking Data via API](https://www.stakingrewards.com/data-api)

```
Last updated on 05/23/2024
```


---

# 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.stakingrewards.com/staking-data/methodologies/chromia-srb.md?ask=<question>
```

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.