Bitlayer Public RPC Service Maintenance Announcement

Dear Bitlayer Community,

Bitlayer will be conducting planned maintenance and infrastructure adjustments on both mainnet and testnet public RPC nodes in the near future.

Impact During Maintenance

During the maintenance window, the public RPC service may experience brief periods of instability or intermittent disruptions. Users with high-availability requirements are advised to:

• Configure backup RPC endpoints as fallback
• Implement request retry mechanisms at the application level
• Follow our official channels for the latest maintenance updates

Changes to Historical Balance Query Support

Following the maintenance, the public RPC service will no longer provide historical balance query capabilities by default. Specifically, RPC methods such as eth_getBalance and eth_call will only support querying the latest state (latest) and will no longer support queries at specific historical block heights.

If your application relies on historical state queries, we recommend:

• Deploying your own Archive Node for full historical data access
• Using third-party data service providers

Thank you for your understanding and continued support!

Bitlayer Team March 22, 2026