How It Works
Cosmos uses Tendermint BFT consensus, providing instant finality (no probabilistic finality like PoW) within each zone. The Cosmos SDK — a modular blockchain development framework — allows developers to build sovereign blockchains with custom consensus parameters, governance, and tokenomics, while automatically inheriting IBC compatibility. IBC (Inter-Blockchain Communication) is a TCP/IP-like protocol for blockchain messaging, allowing tokens and data to move between zones trustlessly using light client proofs. Interchain Security (ICS) allows smaller chains to lease security from the Cosmos Hub validators rather than bootstrapping their own.
Consensus Mechanism: Proof of Stake (Tendermint)
Proof of Stake consensus selects block proposers based on the amount of cryptocurrency staked as collateral. Validators risk losing their stake (slashing) if they act dishonestly, creating economic security without energy expenditure. Stake-weighted selection means larger stakers have proportionally greater influence on block production.
Key Architecture Facts
| Category | Interoperability |
| Consensus | Proof of Stake (Tendermint) |
| Launched | 2019 |
| Founder | Jae Kwon |