# Partisia Blockchain SRB

MPCSRB is a benchmark representing the mean, annualized staking rate across all active Partisia Blockchain validators.

MPCSRB is calculated and published by Staking Rewards via the [Partisia Blockchain Profile](https://www.stakingrewards.com/asset/partisia-blockchain) and [Data API](https://www.stakingrewards.com/data-api).

> **TL;DR:** Partisia Blockchain staking rewards follow a deterministic 10-year schedule (522 weeks) of weekly MPC reward pools. The reward rate equals the current weekly reward pool times 52 weeks divided by total staked MPC tokens.

$$
MPCSRB = wrp \* t\_w / st
$$

<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>wrp</td><td>Weekly Reward Pool</td><td>The deterministic weekly reward amount in MPC, defined by Partisia's published reward schedule for all 522 weeks (10 years).</td></tr><tr><td>st</td><td>Staked Tokens</td><td>The total number of MPC tokens staked across all active validators (sum of stakeForJobs).</td></tr><tr><td><span class="math">t_w</span></td><td>Weeks per Year</td><td>52 weeks</td></tr></tbody></table>

* MPCSRB takes into account all accumulated rewards, whether they have been claimed or remain unclaimed.
* MPCSRB operates on a non-compounded basis, meaning it excludes returns generated from the reinvestment of rewards.
* The weekly reward pool follows a deterministic 10-year schedule (522 weeks) published in Partisia's `rewards-periods.weekly.csv`. Week 1 started on May 30, 2022 (ISO week 22 of 2022).
* MPCSRB is based on an assumption of 100% validator performance. For an SRB reward rate adjusted according to individual validator performance, please refer to MPCSRB(v).

***

#### Slashing

1. Partisia Blockchain does not implement traditional slashing. Validators with poor performance (low block production) receive proportionally lower rewards rather than losing staked tokens.

***

### MPC Validator Staking Reward Rate: MPCSRB(v)

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

$$
MPCSRB(v) = MPCSRB \* p \* (1 - c)
$$

<table data-full-width="false"><thead><tr><th width="150.33333333333331">Formula key</th><th width="187">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>p</td><td>Performance</td><td>A relative block production score measuring blocks produced compared to the best-performing node, observed over a 4-week period. Published in Partisia's BpScores CSV.</td></tr><tr><td>c</td><td>Commission</td><td>The fee imposed by validators on delegators. Currently fixed at 2% for all validators on the Partisia network.</td></tr></tbody></table>

***

#### Observation Period:

1. The MPCSRB is determined based on the current week's deterministic reward schedule and on-chain staked tokens at the point of evaluation.
2. This data is then annualized for a comprehensive year-long projection.

#### Calculation

The calculation happens every 2 hours and is immediately published via [Data API](https://www.stakingrewards.com/data-api).

#### Limitations

1. MPCSRB employs a 365-day convention for annualizing rewards. This convention remains consistent and does not accommodate adjustments for leap years.
2. The reward rate is based on the deterministic weekly schedule. Actual individual returns depend on the rewardable token calculation, which considers unlock ratio, stake ratio, delegation ratio, and stake cap ratio.
3. MPCSRB does not factor in the 5,000,000 MPC stake cap per node. Validators exceeding this cap have their excess stake excluded from reward eligibility, resulting in diluted returns.

***

### MPC Real Reward Rate: MPCSRB^R

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

$$
MPCSRB^R = 1 + MPCSRB / (1 + ir) - 1
$$

<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>ir</td><td>Inflation Rate</td><td>The annual rate at which circulating MPC supply grows due to reward pool distributions.</td></tr></tbody></table>

{% hint style="info" %}
**Inflation Rate Behaviour**

Partisia Blockchain has a fixed total supply of approximately 1 billion MPC tokens. No new tokens are minted. However, staking rewards are distributed from a pre-allocated reward pool, which increases the circulating supply over time. This circulating supply growth represents effective inflation for token holders.

The inflation rate is calculated as:

$$
ir = (wrp \times t\_w) / cs
$$

Where `wrp` is the weekly reward pool from the deterministic schedule, `t_w` is 52 weeks, and `cs` is the current circulating supply. As of March 2026, this yields an inflation rate of approximately 3.4%.
{% endhint %}

***

### Other Partisia Blockchain metrics calculated by Staking Rewards:

<table data-full-width="false"><thead><tr><th width="212.99999999999994">Metric</th><th>Description</th></tr></thead><tbody><tr><td>Staked Tokens</td><td>Total MPC tokens staked across all active validators (stakeForJobs).</td></tr><tr><td>Delegated Tokens</td><td>MPC tokens delegated to validators by external delegators (acceptedFromOthers).</td></tr><tr><td>Self Staked Tokens</td><td>MPC tokens staked by validators from their own funds (stakedToSelf).</td></tr><tr><td>Staking Wallets</td><td>Total number of unique delegations on-chain (delegatedStakesFromOthers count per validator).</td></tr><tr><td>Active Validators</td><td>Number of validators in the active committee with CONFIRMED status.</td></tr><tr><td>Block Time</td><td>Average time between blocks on Shard0, measured by comparing timestamps of blocks 100 apart.</td></tr><tr><td>Circulating Supply</td><td>Unlocked MPC tokens available for transactions.</td></tr><tr><td>Total Supply</td><td>Total MPC tokens in existence (fixed at approximately 1 billion).</td></tr></tbody></table>

***

#### Data Sources:

* Partisia Blockchain REST API for on-chain validator and staking data
* Partisia Browser Backend GraphQL API for block metrics and account calculations
* Partisia GitLab reward schedule repository for deterministic weekly reward amounts
* CoinGecko for price data

#### References:

* [Partisia Blockchain Documentation](https://partisiablockchain.com/)
* [Partisia Node Operators Rewards Repository](https://gitlab.com/partisiablockchain/node-operators-rewards)
* [Staking Rewards Partisia Blockchain Profile](https://www.stakingrewards.com/asset/partisia-blockchain)

***

:books: [Learn more about MPC Staking](https://www.stakingrewards.com/asset/partisia-blockchain)

:bar\_chart: [Calculate your MPC Staking Rewards](https://www.stakingrewards.com/calculator?asset=partisia-blockchain)

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

```
Last updated on 03/20/2026
```


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