> ## Documentation Index
> Fetch the complete documentation index at: https://docs.allium.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

<Info>
  **Spark is currently in Beta mode.**

  Backfills and verifications are ongoing.
</Info>

Spark is a Bitcoin L2 statechain (FROST-signed off-chain tree). Raw data — blocks, transactions, and token transfers (native BTC + tokens) — is ingested via the Sparkscan indexer API and mapped onto synthetic 1-second blocks.

<Card href="https://docs.spark.money">
  More about Spark
</Card>

### Spark Tables

Our Spark data includes the following schemas and tables:

| Schema | Description          | Tables                                                                                                                                                                                                                                                                                    |
| ------ | -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Raw    | Raw blockchain data. | [blocks](/historical-data/supported-blockchains/other-ecosystems/spark/raw/blocks), [token\_transfers](/historical-data/supported-blockchains/other-ecosystems/spark/raw/token-transfers), [transactions](/historical-data/supported-blockchains/other-ecosystems/spark/raw/transactions) |