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 Total value locked Methodology

## 1. Overview

Total value locked (TVL) measures the total value of assets deposited into Hydration. This includes liquidity provided to Hydration DEX across its various pool architectures—the Omnipool, isolated pools, and stablepools—as well as assets deposited as collateral or for lending in Hydration Lending. The metric serves as a leading indicator of the protocol's capacity for trading and borrowing activity.

## 2. Data sources

- **Blockchain events**: Pool reserve tracking for Omnipool, isolated, and stablepools, along with `atoken_supply` state data for lending markets, covering Hydration Substrate
- **External data**: End-of-day price feeds and asset metadata

## 3. Step-by-step calculation

### Component A: Hydration DEX reserve tracking

- **Purpose**: Calculate the total liquidity available within the different exchange pool types.
- **Logic**: Reserves are extracted for the Omnipool, isolated pools, and stablepools. For the Omnipool, asset ID '1' is specifically excluded from the calculations. Reserves for both tokens in each pair or pool are captured daily. A specific sub-calculation is performed for the aDOT stablepool by parsing balance state data for the relevant pool address and token identifier.
- **Key fields**: `pool_address`, `token_address`, `reserve_0`, `reserve_1`, and `net_deposits`.

### Component B: Hydration Lending balance tracking

- **Purpose**: Measure the total value of deposits in the lending protocol.
- **Logic**: Total supply values for aTokens are extracted from state data. These EVM-compatible asset addresses are mapped to their corresponding underlying substrate token identifiers and decimal precision using a dimension table. Daily balances are filled forward to account for days without state changes, ensuring a continuous time series of deposits.
- **Key fields**: `atoken_address`, `total_supply`, and `underlying_token_id`.

### Component C: USD conversion and final aggregation

- **Purpose**: Normalize all tracked deposits into a single USD-denominated metric.
- **Logic**: All asset quantities from Hydration DEX and Hydration Lending are normalized by their respective decimal precision. These normalized values are then multiplied by end-of-day price feeds. For specific assets like WETH, the conversion is performed using specialized price feed lookups. The resulting USD values are aggregated across all products and pool types to arrive at the final daily TVL.
- **Key fields**: `net_deposits`, `amount`, `price_usd`, and `timestamp`.

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

Total value locked (TVL)

Total value locked (TVL) — value deposited into the project's applications.

HydrationHDX

Total value locked

Total value locked

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