# ZetaChain SRB

ZETASRB is a benchmark representing the mean, annualized staking rate across all active ZetaChain validators.

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

> **TL;DR:** ZetaChain staking rewards follow the Cosmos SDK formula (ATOMSRB): annual provisions plus annualized fees, minus community tax, divided by total staked ZETA tokens. Validator-level rates factor in performance and commission.

{% hint style="info" %}
The calculations are derived from the ATOMSRB documentation, serving as the foundational reference for validator-level and real reward rate metrics.

For more information visit the [ATOMSRB docs](https://docs.stakingrewards.com/staking-data/methodologies/cosmos-hub-srb).
{% endhint %}

{% hint style="warning" %}
ZetaChain does **not** use the standard Cosmos SDK mint module. Instead, it uses a custom **emissions module** that distributes rewards from a fixed emissions pool. Annual provisions are dynamically computed from the on-chain `block_reward_amount` parameter rather than from `mint/annual_provisions`. This is a key difference from ATOMSRB.
{% endhint %}

{% content-ref url="cosmos-hub-srb" %}
[cosmos-hub-srb](https://docs.stakingrewards.com/staking-data/methodologies/cosmos-ecosystem-srb/cosmos-hub-srb)
{% endcontent-ref %}

### ZETA Staking Rewards Rate: ZETASRB

$$
ZETASRB = (𝑑𝑝∗𝑎𝑝+𝑑𝑓∗𝑡\_𝑦)/𝑠𝑡
$$

<table><thead><tr><th width="145">Formula Key</th><th width="169">Metric Name</th><th>Description</th></tr></thead><tbody><tr><td>dp</td><td>Distribution Proportion</td><td>Distribution Proportion is the validator emissions percentage, currently set to 75%. Read from the on-chain <code>validator_emission_percentage</code> parameter in the emissions module.</td></tr><tr><td>ap</td><td>Annual Provisions</td><td>Dynamically computed as <code>block_reward_amount * blocks_per_year</code>, where <code>block_reward_amount</code> is read from the on-chain emissions module params and <code>blocks_per_year</code> is derived from the actual observed block time.</td></tr><tr><td>df</td><td>Daily Fees</td><td>The total number of tokens paid as transaction fees.</td></tr><tr><td>st</td><td>Staked Tokens</td><td>The total number of tokens bonded with active, non-jailed validators.</td></tr><tr><td><span class="math">t_y</span></td><td>Year Constant</td><td>365d</td></tr></tbody></table>

***

### ZETA Validator Staking Rewards Rate: ZETASRB(v)

Staking Rewards calculates the ZETASRB for each validator based on their individual performance and commission rate.

$$
ZETASRB(v) = ATOMSRB(v)
$$

{% embed url="<https://docs.stakingrewards.com/staking-data/methodologies/cosmos-ecosystem-srb/cosmos-hub-srb#atom-validator-staking-rewards-rate-atomsrb-v>" %}
ATOM Validator Staking Rewards Rate
{% endembed %}

***

### ZETA Real Reward Rate: ZETASRB^R

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

$$
ZETASRB^R = ATOMSRB^R
$$

{% embed url="<https://docs.stakingrewards.com/staking-data/methodologies/cosmos-ecosystem-srb/cosmos-hub-srb#atom-real-reward-rate-atomsrb-r>" %}
ATOM Real Reward Rate
{% endembed %}

**Inflation Rate Behavior**

* ZetaChain rewards are currently funded from a fixed emissions pool established at genesis. The `block_reward_amount` parameter determines the per-block emission rate, which is set via governance.
* The emissions pool is projected to deplete around September 2026, at which point the protocol plans to transition to a target of \~2.5% yearly inflation based on the current circulating supply.
* Because annual provisions are dynamically computed from the on-chain `block_reward_amount`, any governance changes to the emission rate are automatically reflected in ZETASRB.

***

### Other ZetaChain metrics calculated by Staking Rewards

<table><thead><tr><th width="188">Metric</th><th>Description</th></tr></thead><tbody><tr><td>Delegated Tokens</td><td>The number of tokens delegated to validators.</td></tr><tr><td>Self Staked Tokens</td><td>The number of tokens staked by validators directly.</td></tr><tr><td>Staking Wallets</td><td>This metric refers to the total quantity of distinct delegations made. It doesn't distinguish based on unique delegator addresses and excludes considerations of any minimum delegation thresholds.</td></tr></tbody></table>

***

#### Data Sources:

* [Staking Rewards](https://www.stakingrewards.com/) from indexed ZetaChain Cosmos SDK REST endpoints and Cosmos Directory chain metadata

***

#### References:

* <https://www.zetachain.com/docs/>

***

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

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

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

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Last updated on 03/20/2026
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