FAQ

I have an existing subscription on Basescan/BscScan and was redirected to Etherscan

We strongly recommend migrating to V2 for better usage management, stability, not to mention a sweet upgrade to access all other chains we support 😗

If you have trouble managing your plan or encountered errors, we'll get you sorted.

TL;DR what are the breaking changes ?

There are no breaking changes. All updates are backward-compatible, but we recommend switching to V2 sooner rather than later for easier multichain app development.

Please note that we do plan to deprecate V1 over time.

How many chains can I batch together ?

Our endpoint accepts one `chainId` at a time, feel free to repeat the query for each chain you need to access.

Is there an end of support/deadline to make changes ?

We don't have any timeline to deprecate anything yet.

How do I reference the older V1 docs ?

Its still here.

How are rate limits calculated ?

Exactly as before—based on your plan, with a per-second request limit and an overall daily limit.

To manage this, you can set up programmatic alerts or enable overage charges if needed for peace of mind.

Does this cover contract verification ?

Soon! We're collaborating with the Hardhat and Foundry teams to streamline this process—goodbye to managing 20 different API keys.