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Etherex

# Etherex rex33/REX rate Methodology

## 1. Overview

The REX33/REX rate measures the relative exchange rate between two tokens in the Etherex protocol ecosystem: REX33 and REX. This metric calculates how the value of REX33 compares to REX by dividing their respective USD prices, providing insight into the relative performance and value relationship between these two related tokens. The rate shows how many REX tokens would equal one REX33 token based on their current market valuations.

## 2. Data sources

- **End-of-day price feeds**: USD price data for both REX and REX33 tokens, updated daily
- **REX token data**: Price information for REX token at contract address `0xefd81eec32b9a8222d1842ec3d99c7532c31e348`
- **REX33 token data**: Price information for REX33 token at contract address `0xe4eeb461ad1e4ef8b8ef71a33694ccd84af051c4`
- **Chain availability metadata**: Information about Linea chain operational status to ensure data quality

## 3. Step-by-step calculation

### Component A: REX price extraction
- **Purpose**: Extracts daily USD price data for the REX token
- **Logic**: Filters the price feeds to retrieve only records for the REX token using its contract address. Each record contains a timestamp and the corresponding USD price for that day.
- **Key fields**: `timestamp` (daily), `price_usd` (renamed to `rex_price_usd`)

### Component B: REX33 price extraction  
- **Purpose**: Extracts daily USD price data for the REX33 token
- **Logic**: Filters the price feeds to retrieve only records for the REX33 token using its contract address. Each record contains a timestamp and the corresponding USD price for that day.
- **Key fields**: `timestamp` (daily), `price_usd` (renamed to `rex33_price_usd`)

### Component C: Price data alignment
- **Purpose**: Aligns REX and REX33 price data for the same time periods
- **Logic**: Performs an inner join between REX and REX33 price data based on matching timestamps. This ensures that the rate calculation only includes days where both tokens have available price data, preventing incomplete calculations.
- **Key fields**: `timestamp`, `rex_price_usd`, `rex33_price_usd`

### Final aggregation
- **Combining components**: The aligned price data is used to calculate the exchange rate through division
- **Currency conversion**: Both token prices are already in USD from the source price feeds, so no additional conversion is needed
- **Time aggregation**: Data is aggregated at daily boundaries based on the timestamp field
- **Final calculation**: The REX33/REX rate is calculated by dividing the REX33 USD price by the REX USD price, with zero-division protection to handle cases where REX price might be zero. The formula is: `rex33_price_usd / rex_price_usd`
- **Data quality measures**: A fill-forward strategy is applied to handle missing data points, and chain availability filtering excludes periods when the Linea chain was not operational, ensuring only reliable data is included in the final metric

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

Relative price of REX compared with rex33.

EtherexREX

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rex33/REX rate

rex33/REX rate

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