Harmony

Harmony is an open blockchain with data sharding and fast finality. It enables micro-payments for social games and community AI, supports smart contracts for market pricing, and ensures data privacy with zero-knowledge proofs.

Networks Mainnet
Released 2019
Consensus Practical Byzantine Fault Tolerance (PBFT)
Smart contracts Yes
Block time ~2 seconds
Smart contract language(s) supported Solidity
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What makes Harmony blockchain unique?

Utilizing onchain tokens, Harmony supports micro-payments for social games and community AI, along with smart contracts for market pricing and zero-knowledge proofs for data privacy. Harmony aims to scale trust and foster a fair economy through its decentralized, scalable, and secure platform, enabling transactions without reliance on trusted intermediaries.