Question 1

How to integrate ibc-rs into a Substrate-based blockchain?

Accepted Answer

Use the modular sub-crates like ibc-core and ibc-clients; refer to the 'ibc-rs in the wild' table which lists Substrate pallet integration by Octopus Network, though it's still in development. Start with the testing toolkit to simulate IBC interactions.

Question 2

ibc-rs vs ibc-go: which one should I use?

Accepted Answer

Choose ibc-rs for Rust-based blockchains needing performance and safety, as it's modular and used in projects like Picasso Network. Opt for ibc-go if you're in the Cosmos ecosystem with Go, as it's more established and widely adopted.

Question 3

What are the security risks with ibc-rs?

Accepted Answer

IBC protocol itself has security considerations like light client verification and relay security; ibc-rs implements these specs, but you must ensure proper integration and testing using ibc-testkit to avoid vulnerabilities in cross-chain transactions.

Question 4

Can ibc-rs work with non-Cosmos chains like Ethereum?

Accepted Answer

Yes, as shown in the 'ibc-rs in the wild' table, it's used for Ethereum IBC relayer by Composable, but this requires custom client implementations and may involve additional development effort for compatibility.

Question 5

How to test IBC modules using ibc-testkit?

Accepted Answer

Use ibc-testkit to simulate host chains and IBC events; the README mentions it aids in writing integration tests, so refer to the crate documentation for examples on setting up mock environments.

Question 6

Is ibc-rs production-ready for large-scale networks?

Accepted Answer

It's used in production by projects like Nomic and Composable, as per the table, but verify based on your use case since some integrations are still in development, indicating ongoing maturation.

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