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This article explains how to augment Hyperledger Fabric's orderer service by integrating Tendermint's ABCI to implement a PBFT consensus mechanism, detailing the limitations of solo and Kafka ordering, the motivation for decentralized ordering, and the step‑by‑step implementation approach.
This article provides a comprehensive overview of the Cosmos blockchain ecosystem, explaining its hub‑and‑zone architecture, Tendermint consensus, IBC cross‑chain communication, and the Cosmos‑SDK framework for building custom blockchains, while comparing it to other modular platforms like Polkadot.
Tendermint is a modular blockchain framework that separates consensus (a Byzantine‑fault‑tolerant Proof‑of‑Stake engine) from application logic via the ABCI, offering a three‑layer architecture—networking, consensus, and application—so developers can build custom chains in any language while leveraging Cosmos interoperability.
This article introduces Tendermint’s modular blockchain framework, explains its Core and ABCI components, provides step‑by‑step installation and execution of the built‑in key‑value store example, demonstrates transaction creation and querying, and walks through the Go source code for CheckTx, DeliverTx, and Commit functions.