BAC-L3-COSMOS-120Cosmos SDK
IBC I — clients, connections, channels
The most widely deployed interoperability protocol, broken into its three layers. Each answers a distinct trust question.
- Level
- L3 — Infrastructure engineer
- Duration
- 4 h
- Track
- Cosmos SDK
- Maintainer
- Cosmos Lead Architect
Learning objectives
- 01Describe exactly what an IBC light client verifies
- 02Establish a connection and then a channel between two chains
- 03Explain the role of the proof carried by each packet
Guided lab
Establish a full IBC connection between two local chains and inspect every protocol step.
Independent lab
Document the state of each layer after a deliberately failed handshake.
Security angle
An expired client: why an idle chain breaks the link, and how to restore it.
Assessment
Established channel plus an annotated protocol diagram checked against the specification.