IBC channels are a key component of the Inter-blockchain Communication (IBC) protocol used in the Cosmos ecosystem. IBC channels enable communication between different Cosmos chains, allowing the transfer of tokens and data between them. Each IBC channel has a unique identifier known as the channel ID, which is used to specify the source and destination of a transfer. The channel ID can change depending on which relayers are active, so it's important to double-check the channel IDs before making a transfer.
You can also view a full list of IBC Relayers and Channels on Mintscan