• Pricing
  • Enterprise
  • Customers
  • Blog

A public permissionless blockchain platform with smart contract capabilities and shard chains.

Explore the features

ConsensusFast Byzantine Fault Tolerance (FBFT) with staking
Public / Private / PermissionedPublic
Smart contractsYes
Smart contract language(s) supportedSolidity, Vyper, Yul, Huff
Transaction privacyNo
Transaction visibilityAll participants have access to all entries ever recorded.
Transaction orderingAll validating participants must reach consensus over the order of all transactions that have taken place, irrespective of whether a participant has taken part in a particular transaction or not.

Fault tolerance

Harmony is a Fast Byzantine Fault Tolerance (FBFT) consensus model secured by validators who stake ONE to validate blocks.


Harmony produces blocks at 2 second intervals.

Industry use case

Smart contracts for digital assets.

What’s next?

Start today with an elastic or dedicated Harmony node.

Keen to learn more about deploying, managing, and scaling your blockchain project?

Complete the form below, and our experts will get in touch with you.