Collators aggregate parachain transactions block candidates and producing state transition proofs for validators based on those blocks.

Hydration is a Polkadot parachain specialized in trading, lending, and stablecoin issuance.

HDX holders own and govern the protocol. Hydration’s investors include KR1 plc, Hypersphere, etc.

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Hydration

# Hydration Outstanding supply Methodology

## 1. Overview

Outstanding supply is measured as the total circulating amount of HOLLAR, the stablecoin issued by Hydration. This metric is utilized as a proxy for the protocol's revenue-generation capacity, as the collateral backing the issued supply is typically invested in yield-bearing assets. Assets that are authorized but unissued, or those held within the issuer’s treasury, are excluded from this calculation.

## 2. Data sources

- **Blockchain events**: State snapshots from the `atoken` supply registry on Hydration Substrate
- **External data**: End-of-day price feeds for the HOLLAR asset

## 3. Step-by-step calculation

### Component A: HOLLAR supply extraction

- **Purpose**: The raw supply of the HOLLAR stablecoin is captured from the protocol's state.
- **Logic**: Supply values are extracted from the `atoken` supply state for the HOLLAR contract address. The `total_supply` value is parsed from the state records and normalized by the asset's decimal precision.
- **Key fields**: `atoken_address` (identification of the HOLLAR asset), `total_supply` (raw supply quantity)

### Component B: Temporal forward-filling

- **Purpose**: A continuous daily time series of the outstanding supply is ensured.
- **Logic**: For days where no specific state changes are recorded on-chain, the last known supply value is carried forward. This process ensures that the metric reflects the existing supply for every 24-hour period.

### Component C: USD conversion and finalization

- **Purpose**: Values are normalized to USD and validated for final reporting.
- **Logic**: The normalized outstanding supply is multiplied by end-of-day price feeds for the HOLLAR asset. Data is validated against canonical project and chain identifiers, with daily granularity established using UTC day boundaries. Any remaining gaps in the data series are populated with zero values to maintain consistency.

*This methodology was automatically generated by Token Terminal's methodology analyzer.*

Circulating supply of stablecoins issued by the project.

HydrationHDX

Outstanding supply

Outstanding supply

Competitive landscape

Chain breakdown