Archives are an important piece of DotSama data infrastructure provided by Subsquid. They provide access to on-chain data in GraphQL format for all major parachains on Kusama and Polkadot, with more chains added as the ecosystem grows. They are being used as a data source for Squids and for efficient data exploration and ad-hoc queries. An up-to-date list of Archives is kept in a public Archive Registry
All archives can be accessed and queried via an web intuitive GraphiQL interface and are often used as developer friendly replacement of a block explorer.
Over the last 3 months (March, April, May 2022) we've provided a free public data indexing service for ~35 Substrate blockchains (some archives have been dismissed, new ones have been added), so that everyone interested in the projects can publicly access indexed data on Substrate Events, Extrinsics, Storage Items and EVM logs.
Between 2022-03-20 (when tracking has started) and 2022-05-06 Subsquid’s Archive infrastructure has collectively:
This proposal includes the combined costs for running Archives for Polkadot and its Parachains, which amounts to a total of USD $16,044.40 - raw data is here.
Full text of the proposal can be found here
Thank you for your consideration, Subsquid.io
Subsquid provides a data indexing service for many blockchain projects, allowing people to access indexed data on Substrate Events, Extrinsics, Storage Items, and EVM logs.
They have served over 1.2 billion queries in the last three months, with Kusama and Polkadot chains representing a significant portion of the data requested.
The ongoing cost for running this service for Polkadot and its Parachains is USD $16,044.40.
Archives can be accessed and queried via an intuitive GraphiQL interface, making it a developer-friendly replacement for a block explorer.
Subsquid's Archive Registry keeps an up-to-date list of archives available for public use.