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Blockchains (L1)

XDC Network

# XDC Network Block time Methodology

## 1. Overview

The XDC Network block time metric measures the average time interval between consecutive blocks on the XDC blockchain, aggregated daily. This metric provides insights into the blockchain's performance, network efficiency, and block production consistency. The calculation analyzes timestamp differences between sequential blocks to determine how frequently new blocks are produced, with results expressed as daily averages in milliseconds.

## 2. Data sources

- **XDC blockchain block data**: Raw XDC Network blockchain block headers containing timestamp and block number information
- **Block metadata**: Block numbers and timestamps extracted directly from the XDC Network blockchain nodes

## 3. Step-by-step calculation

### Component A: Block data extraction
- **Purpose**: Retrieve and prepare raw block information from the XDC blockchain
- **Logic**: Extract block timestamps and block numbers from XDC Network block headers. Filter out the genesis block (block number 0) which has an artificial timestamp at the start of Unix time that would skew calculations. Cast timestamp and block number fields to appropriate data types for processing.
- **Key fields**: `block_timestamp` (when the block was mined), `block_number` (sequential block identifier)

### Component B: Consecutive block pairing
- **Purpose**: Create pairs of consecutive blocks to enable time difference calculations
- **Logic**: Use a lag window function ordered by block number to retrieve the previous block's timestamp for each block. This creates a dataset where each row contains both the current block's timestamp and the immediately preceding block's timestamp, enabling interval calculations between consecutive blocks.
- **Key fields**: `block_timestamp` (current block time), `previous_timestamp` (preceding block time), `block_number` (for ordering)

### Component C: Block time interval calculation
- **Purpose**: Calculate the actual time intervals between consecutive blocks
- **Logic**: Compute the difference in milliseconds between each block's timestamp and its predecessor's timestamp. Filter out any rows where the previous timestamp is null (which occurs for the first block after genesis). Truncate block timestamps to daily boundaries to prepare for daily aggregation.
- **Key fields**: `block_time` (interval in milliseconds), `timestamp` (daily boundary)

### Final aggregation
- **Combining components**: Group all block time intervals by daily timestamp boundaries and calculate the average block time for each day
- **Currency conversion**: Not applicable for this time-based metric
- **Time aggregation**: Daily aggregation using timestamp truncation to day level, with all block intervals within each day averaged together
- **Final calculation**: The average of all individual block time intervals (in milliseconds) for each day, along with standard metadata fields including `chain_id` ('xdc'), `market_sector_id` ('blockchains_l1'), `business_segment_id` ('blockchain'), and `product_id` ('xdc'). Results are processed through the finalize metric macro with a fill_zeros strategy and chain availability filtering applied.

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

avg(block_timestamp - previous_block_timestamp)

XDC NetworkXDC

Block time

Block time

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