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Crypto Glossary/Tendermint


Tendermint is a BFT consensus algorithm and blockchain platform that provides secure and efficient consensus in distributed systems. It is modular, scalable, and allows for fast finality,

TLDR - Tendermint

Tendermint is a Byzantine fault-tolerant (BFT) consensus algorithm and blockchain platform that provides a secure and efficient way to reach consensus in distributed systems. It combines the advantages of both Proof of Stake (PoS) and Practical Byzantine Fault Tolerance (PBFT) algorithms to achieve consensus among a set of validators. Tendermint is designed to be modular, allowing developers to build various applications on top of it.


Tendermint was developed by Jae Kwon and his team at Tendermint Inc. It was first introduced in 2014 and has since gained popularity due to its robustness and scalability. Tendermint is often used as the underlying consensus engine for blockchain platforms like Cosmos and Binance Chain.

Consensus Algorithm

Tendermint uses a BFT consensus algorithm to achieve agreement among a set of validators. Unlike Proof of Work (PoW) algorithms, which require miners to solve complex mathematical puzzles, Tendermint relies on a voting-based consensus mechanism. Validators take turns proposing blocks and voting on their validity. Once two-thirds of the validators agree on a block, it is considered finalized.

Validator Set

In Tendermint, a fixed set of validators is responsible for proposing and validating blocks. Validators are selected based on their stake in the network, which is determined by the amount of cryptocurrency they hold or have bonded. The validator set can be dynamic, allowing new validators to join and existing validators to leave.

Speed and Scalability

Tendermint is designed to be highly efficient and scalable. It can process thousands of transactions per second, making it suitable for applications that require fast transaction confirmation times. Additionally, Tendermint's consensus algorithm allows for parallel processing of transactions, further improving its scalability.


One of the key features of Tendermint is its ability to provide fast finality. Once a block is finalized, it cannot be reversed or modified. This ensures the immutability and security of the blockchain. Finality is achieved through the voting-based consensus mechanism, where a block is considered finalized once two-thirds of the validators agree on it.

Application Development

Tendermint provides a modular framework for building decentralized applications (dApps). Developers can write smart contracts using programming languages like Solidity or Go and deploy them on the Tendermint blockchain. The modular nature of Tendermint allows for easy integration with other blockchain platforms and protocols.


Tendermint is designed to be interoperable with other blockchain networks. It allows for the creation of inter-blockchain communication (IBC) protocols, enabling the transfer of assets and data between different blockchains. This interoperability feature makes Tendermint suitable for building cross-chain applications and facilitating seamless integration between various blockchain ecosystems.


Tendermint is a powerful consensus algorithm and blockchain platform that provides a secure and efficient way to achieve consensus in distributed systems. Its BFT consensus algorithm, speed, scalability, finality, and interoperability features make it a popular choice for building decentralized applications and connecting different blockchain networks.

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