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Overview

SQD Network is a distributed query engine and data lake that the SQD ecosystem is built around.

Currently it serves historical blockchain data for 190+ networks. Compared to data access using a conventional chain node RPC, SQD Network allows one to access data at near zero cost, in a more granular fashion and from multiple blocks at once, thanks to its rich streaming and filtering capabilities.

There are currently two independent instances of SQD Network:

  1. A decentralized permissionless network.

  2. A permissioned network ran by Subsquid Labs GmbH. It's been used by 400+ indexers in production. List of supported networks.

Both variants are freely accessible to public using the same API.

If you are a network developer and would like to see your chain supported by SQD, please fill a form or contact us in SquidDevs Telegram chat.

Permissionless public network​

The decentralized version of SQD Network is now in the mainnet phase. It serves data for almost all networks supported by the private cluster, with the (temporary) exception of Solana.

The most recent version of the data access node, SQD portal, fetches data chunks from multiple worker nodes in parallel and exposes a streaming API. It is now in a closed beta.

You can participate in the public network by running a worker or reward good workers by delegating SQD tokens and sharing in profits.

Open private network​

SQD's private data lake (formerly known as Archives) is a production-ready fork of early SQD Network that runs on SQD infrastructure. It provides a stand-in for the permissionless SQD Network until it matures; its API shares many similarities with the SQD portal API.

The gateway of this private network is public and free to query. URLs of gateways of supported networks are available via sqd gateways list and from the exhaustive public gateways list.

List all supported networks:

sqd gateways list -t evm

Usage in squids' EvmBatchProcessor configuration:

const processor = new EvmBatchProcessor()
  .setGateway('https://v2.archive.subsquid.io/network/ethereum-mainnet')

See EVM gateways.