This resource addresses common questions about the Crosschain Broadcaster standard proposed by Offchain Labs.

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• What’s the goal of the Crosschain Broadcaster standard?

• Why is a standard like this relevant for L2s or L3s?

• Which kinds of applications could benefit from the Crosschain Broadcaster?

• Is there a cost concern for using onchain storage proofs for verification?

• How do finality differences affect message verification?

• How does the Crosschain Broadcaster compare to “fast bridges”?

• What is the typical time delay for a message to be verified?

• Are there ways to speed things up?