🎮Aptos SRB

APT Staking Rewards Benchmark (APTSRB™) Methodology

APTSRB is a benchmark representing the mean, annualized staking rate across all active Aptos validators.

APTSRB is calculated and published by Staking Rewards via the Aptos Profile and Staking Data API.

$$APTSRB = rrpe * epy$$

Formula key	Metric name	Description
rrpe	Reward rate per Epoch	This is a value determined by the protocol, and it represents how many tokens a validator gets per staked APT, per epoch (assuming 100% performance)
epy	Epochs per Year	How many epochs there are in a year. Currently, epchs last approximately 7200s (2 hours)

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Slashing

1. Currently, slashing is not implemented in the Aptos Network

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APT Validator Staking Reward Rate: APTSRB(v)

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

$$APTSRB(v) = APTSRB * (1 - c) * p$$

Formula key	Metric name	Description
c	Commission	The fee imposed by a specific validator to its delegators.
p	Performance	This metric is determined by the ratio between number of successful proposals by the validator and the total number of proposals made by the validator

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Observation Period:

1. The APTSRB is determined based on the latest generated block at the evaluation point.

2. This data is then annualized for a comprehensive year-long projection.

Calculation

The calculation happens every 2 hours and is immediately published via Staking Data API.

Limitations

1. APTSRB employs a 365-day convention for annualizing current slot times. This convention remains consistent and does not accommodate adjustments for leap years.

APT Real Reward Rate: APTSRB^R

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

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

Formula key	Metric name	Description
ir	Inflation Rate	The annual rate at which supply increases. This value is equal to the annual emissions.

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Other Aptos metrics calculated by Staking Rewards:

Metric	Description
Delegated Tokens	The number of APT tokens delegated to validators.
Self Staked Tokens	The number of APT tokens staked by validators directly.
Staking Wallets	Total number of unique delegations onchain. It doesn't distinguish based on unique delegator addresses.

References:

• Aptos Documentation

• Staking Rewards APT profile

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Last updated on 08/10/2024