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Supply & Reward Distribution

Introduction​

The HELIOS blockchain implements a structured staking reward system to fairly distribute incentives while maintaining network security and decentralization. This section covers how supply adjustments, reward mechanisms, and APY scaling work.

Epoch-Based Reward System​

Staking rewards are distributed based on epochs, ensuring a predictable yet adaptable supply model:

  • Epoch Duration: Fixed at one block interval (~5 seconds per block).
  • Dynamic Reward Pool: Rewards are minted per block and distributed to validators and delegators.
  • Governance-Adjustable Parameters: Inflation, APY, and staking mechanics can be modified via governance.

Staking Rewards Calculation​

Each validator and delegator earns staking rewards based on their stake proportion and effective power:

Validator Reward=Validator Effective Stake×Epoch RewardTotal Network Stake\text{Validator Reward} = \frac{\text{Validator Effective Stake} \times \text{Epoch Reward}}{\text{Total Network Stake}}
  • Validator Effective Stake: Adjusted based on whale limits and APY scaling.
  • Epoch Reward: New HELIOS minted per epoch (governance-controlled).
  • Total Network Stake: Sum of all active staking balances.

Delegator Rewards​

Delegators earn rewards based on their stake in a validator:

Delegator Reward=Delegator StakeValidator Total Stake×Validator Reward\text{Delegator Reward} = \frac{\text{Delegator Stake}}{\text{Validator Total Stake}} \times \text{Validator Reward}

Validators may take a commission fee, reducing delegator rewards accordingly.

Whale Limit & APY Adjustment​

To prevent large entities from dominating the network, HELIOS employs a whale limit mechanism, reducing APY for excessively large delegations.

  • Threshold: If a single entity controls more than 5% of the total stake, excess stake receives progressively lower APY.
  • APY Reduction Curve: Follows an exponential decay beyond the threshold:
Effective APY=Base APY×e−k(x−xthreshold)\text{Effective APY} = \text{Base APY} \times e^{-k (x - x_{\text{threshold}})}
  • Base APY: Standard network reward rate.
  • x: Stake percentage of a single entity. threshold: 5% dominance cap.
  • k: Governance-controlled reduction factor.

Supply & Inflation Adjustments​

HELIOS maintains a governance-controlled inflation model to regulate supply expansion.

  • Epoch-Based Inflation: New supply is minted at each block, following:
Minted Per Block=Annual Inflation Rate×Total SupplyBlocks Per Year\text{Minted Per Block} = \frac{\text{Annual Inflation Rate} \times \text{Total Supply}}{\text{Blocks Per Year}}
  • Governance Flexibility: Inflation rates can be adjusted dynamically based on network needs.
  • Reward Sustainability: Ensures staking rewards remain competitive without excessive supply inflation.

Treasury & Reserve Allocation​

A portion of minted tokens is allocated to the Helios Treasury to fund:

  • Ecosystem development (grants, protocol improvements).
  • Security incentives (bug bounties, validator rewards).
  • Buyback programs to counteract inflation.

Conclusion​

The HELIOS staking reward system is designed to ensure fair rewards, decentralization, and economic sustainability. By dynamically adjusting APY, enforcing whale limits, and maintaining treasury reserves, the network fosters long-term stability.