tendermint-rpc vs ibc-proto vs tendermint

tendermint-rpc contains the core types returned by a Tendermint node's RPC endpoint. All networking related features are feature guarded to keep the dependencies small in cases where only the core types are needed.

ibc-proto provides Cosmos SDK & IBC Protocol Buffers definitions

Tendermint is a high-performance blockchain consensus engine that powers Byzantine fault tolerant applications written in any programming language. This crate provides core types for representing information about Tendermint blockchain networks, including chain information types, secret connections, and remote procedure calls (JSON-RPC).