## Ongoing costs for the running of high performance, scalable, and reliable data indexing infrastructure for most of the DotSama ecosystem (and growing).

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:

- Served a total of 1,213,705,478 (1.2 billion) queries
- The highest daily total was 394,214,930 responses in a single 24 hour period
- Our 7 day average at the end of this period is over 25 million responses each day.
- Kusama and Polkadot chains represent a very important share of the demanded data, with 10 and 2.8 million queries per week, respectively

![](https://docs.google.com/spreadsheets/d/e/2PACX-1vTM5hIviY0x_1YVeOD0QEw8uPvPHmFKNcAQrEwCQGSF7JuYAZuUCYo9dXrIfRnCQqVVH5tIMzCb1jjC/pubchart?oid=1449674255&format=image)

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](https://docs.google.com/spreadsheets/d/1RkNQ6-10u_nmmNy2Nkwi-i9EDXv6VwwLJw4DdJVx1pQ/).

[Full text of the proposal can be found here](https://docs.google.com/document/d/e/2PACX-1vTmxUAJivNHO4oMMdJY42c5UonPz_gIAN9PCqZpzGBdgu11ZzU_y0KCByzLkJZegG2gO_nJgw0Btc-K/pub)

Thank you for your consideration, Subsquid.io

[Website](https://subsquid.io/) [Twitter](https://twitter.com/subsquid) [Email](mailto:social@subsquid.io) [Github](https://github.com/subsquid/)

Approve a proposal. At a later time, the proposal will be allocated to the beneficiary
and the original deposit will be returned.

May only be called from `T::ApproveOrigin`.

# <weight>
- Complexity: O(1).
- DbReads: `Proposals`, `Approvals`
- DbWrite: `Approvals`
# </weight>

- Subsquid provides a data indexing service for Substrate blockchains.
- They have served over 1.2 billion queries in the last 3 months.
- The cost for running the service for Polkadot and its Parachains is $16,044.40.
- The proposal includes the ongoing costs for the infrastructure.
- Subsquid's website, Twitter, email, and Github information is provided.

#223 Subsquid - Public data indexing Infrastructure for Polkadot (Q2 2022)