Ankr operates a global network of both full and validator nodes on an array of blockchains. These nodes provide the basis for services like Ankr Staking which delegates users’ tokens to blockchain validators and delivers liquid staking rewards (supply-side fees) to users for their contributions to validation efforts.

Ankr is a web3 infrastructure provider of blockchain API/RPC connections, developer tools, and liquid staking products. Ankr was founded and launched in 2017 by Chandler Song, Ryan Fang, and Stanley Wu.

ANKR tokenholders own and govern the protocol. They currently take a cut of the total staking rewards earned by the protocol (revenue). Ankr’s investors include Binance Labs, Block VC, MapleBlock Capital, Bixin Ventures etc.

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# Ankr Total value locked Methodology

## 1. Overview

Ankr's Total Value Locked (TVL) represents the USD value of all assets currently staked through Ankr's liquid staking protocol. This metric tracks the cumulative value of ETH deposited by users into Ankr's staking contracts, accounting for both new stakes and withdrawals over time. The TVL is calculated by monitoring blockchain events that record staking and unstaking activities, then converting the net staked amounts to USD values.

## 2. Data sources

The calculation relies on the following raw data sources:

- **Blockchain events**: Parsed Ethereum event logs from Ankr's liquid staking contracts, specifically `StakeConfirmed` and `PendingUnstake` events
- **Transaction data**: Ethereum transaction metadata including timestamps, transaction hashes, and log indices for event deduplication
- **External data**: End-of-day token price feeds for ETH to USD conversion
- **Token metadata**: Token decimal place information for proper amount normalization

## 3. Step-by-step calculation

### Component A: Staking event extraction
- **Purpose**: Captures all ETH staking activities through Ankr's protocol
- **Logic**: Extracts `StakeConfirmed` events from Ankr's Ethereum staking contract. Each event represents a user depositing ETH into the staking protocol. Events are filtered to exclude removed transactions and include transaction timestamp, user address, and staked amount. The token address is standardized to WETH (0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2) for consistent tracking.
- **Key fields**: `block_timestamp`, `transaction_hash`, `log_index`, `account_address`, `amount`

### Component B: Unstaking event extraction  
- **Purpose**: Captures all ETH unstaking activities to calculate net positions
- **Logic**: Extracts `PendingUnstake` events from Ankr's ETH staking contract, specifically filtering for aETH unstaking where `isAETH` is true. These events represent users initiating withdrawals from the staking protocol. The amounts are negated to represent reductions in staked value. Events are filtered to exclude removed transactions.
- **Key fields**: `block_timestamp`, `transaction_hash`, `log_index`, `account_address`, `amount` (negated)

### Component C: Balance calculation and aggregation
- **Purpose**: Combines staking and unstaking events to calculate net user balances over time
- **Logic**: Unions the staking (positive) and unstaking (negative) events into a single dataset. Token amounts are corrected for decimal places using token metadata. Events are aggregated by day and user address to calculate daily net staking activity. Missing days are zero-filled to ensure complete time series data. Running balances are calculated using window functions, computing the cumulative sum of net staking amounts per user over time, partitioned by user address, chain, and token address.
- **Key fields**: `timestamp`, `account_address`, `chain`, `token_address`, `balance`

### Component D: Protocol-level aggregation and USD conversion
- **Purpose**: Calculates total protocol TVL by summing all user balances and converting to USD
- **Logic**: Sums individual user balances by day to get total assets staked across the entire protocol. The aggregated ETH amounts are converted to USD using end-of-day price feeds applied at the daily timestamp. Chain availability filters are applied to ensure data quality and consistency across supported networks.
- **Key fields**: `timestamp`, `timestamp_grain`, `chain_id`, `product_id`, `assets_staked`

### Final aggregation
- **Combining components**: User-level staked balances are summed daily to calculate protocol-wide total staked assets
- **Currency conversion**: ETH amounts are converted to USD using end-of-day price feeds matched to the calculation timestamp
- **Time aggregation**: Data is aggregated to daily granularity with forward-filling applied for missing days using a zero-fill strategy
- **Final calculation**: The assets staked value is used directly as the TVL metric, representing the total USD value of assets locked in Ankr's staking protocol

*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.

AnkrANKR

Total value locked

Total value locked

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