# Breaking Change ⚠️ Deprecation of Selected Chains – September 2025

**URL:** <https://community.bitquery.io/t/breaking-change-deprecation-of-selected-chains-september-2025/2487>\
**Category:** News\
**Created:** [August 28, 2025, 10:31am UTC](https://community.bitquery.io/t/breaking-change-deprecation-of-selected-chains-september-2025/2487 "2025-08-28T10:31:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Divya](https://avatars.discourse-cdn.com/v4/letter/d/13edae/32.png) [@Divya](https://community.bitquery.io/u/Divya)\
**Post date:** [August 28, 2025, 10:31am UTC](https://community.bitquery.io/t/breaking-change-deprecation-of-selected-chains-september-2025/2487/1 "2025-08-28T10:31:13Z")

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As part of our ongoing efforts to keep Bitquery focused on the most relevant and widely used blockchains, we conduct a quarterly review of all the chains we support. During this review, we identify chains with very low adoption or community activity and decide to sunset them.

We will be **removing support** for the following chains on **15th September 2025** :

- Tezos

- All Testnets

- OpBNB

- Conflux (All datasets)

- Beacon Chain

- Ethereum Classic

- Medella

- EthereumPoW ( Ethereum proof-of-work Fork )

## **What does this mean?**

- These chains will **no longer be indexed or updated** going forward.

- Existing historical data will be safely archived, but will not be queryable in our APIs or Explorer.

## **Why are we doing this?**

The blockchain space evolves quickly, and some networks naturally see declining usage or community support. By removing these “Low adoption chains,” we can better focus our resources on maintaining high-quality data for actively used chains that bring value to developers, businesses, and the community.

## **What you need to do**

- If you are using these chains in your projects, please plan migrations accordingly.

- For any questions, reach out to us at [sales@bitquery.io](mailto:sales@bitquery.io) or join the discussion in our [Telegram group](https://t.me/bloxy_info).

We appreciate your understanding and continued support as we work to keep Bitquery fast, relevant, and developer-friendly.

— The Bitquery Team

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<div class="post-metadata">

**Author:** ![Divya](https://avatars.discourse-cdn.com/v4/letter/d/13edae/32.png) [@Divya](https://community.bitquery.io/u/Divya)\
**Post date:** [August 28, 2025, 10:31am UTC](https://community.bitquery.io/t/breaking-change-deprecation-of-selected-chains-september-2025/2487/2 "2025-08-28T10:31:44Z")

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