# Mythos Substrate Block time Methodology

## 1. Overview

Block time measures the average duration required for a new block to be added to the Mythos Substrate blockchain. This metric serves as a key indicator of network performance, reflecting the speed at which the protocol processes transactions and updates its global state. Average block times are calculated at a daily granularity to provide insight into the consistency and efficiency of the network's consensus mechanism.

## 2. Data sources

- **Blockchain events**: Block metadata, including block numbers and timestamps, sourced from the Mythos Substrate blockchain
- **External data**: None; this metric is derived entirely from on-chain block propagation data

## 3. Step-by-step calculation

### Component A: Block metadata extraction

- **Purpose**: Retrieve the fundamental temporal data for the Mythos Substrate chain
- **Logic**: Block numbers and their associated timestamps are extracted from the underlying blockchain data. The genesis block (block 0) is explicitly excluded from the dataset to ensure that the network initialization phase does not skew the average duration. All timestamps are handled in UTC.
- **Key fields**: `block_timestamp`, `block_number`

### Component B: Block interval calculation

- **Purpose**: Compute the duration between consecutive blocks
- **Logic**: Blocks are sorted in ascending order by block number. A comparative analysis is performed where the timestamp of each block is compared against the timestamp of the preceding block. The difference between these two points is calculated in milliseconds to determine the individual interval for every block added to the ledger.
- **Key fields**: `block_timestamp`, `previous_timestamp`

### Component C: Daily averaging and finalization

- **Purpose**: Aggregate granular block intervals into a standardized daily metric
- **Logic**: Individual block intervals are grouped by day using UTC boundaries. The arithmetic mean of these intervals is calculated for each 24-hour period to produce the daily average block time. The resulting values are normalized by chain and product identifiers, and any potential gaps in the daily time series are addressed through a zero-filling strategy to ensure a continuous data record.
- **Key fields**: `block_time` (average), `timestamp` (daily grain)

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

avg(block_timestamp - previous_block_timestamp)

Block time

Blockchains (L1)

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

Mythos Substrate

Archived

Block time

Block time

Chain breakdown