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Orion Private Transaction Manager

What is Orion?

Orion is an open-source private transaction manager developed under the Apache 2.0 license and written in Java. The primary application of Orion is as the private transaction manager for Hyperledger Besu.

Is Orion part of ConsenSys Quorum?

Yes. ConsenSys Quorum is the complete open source blockchain layer with enterprise support available from ConsenSys.

What can you do with Orion?


  • Generates and maintains private/public keypairs.
  • Stores privacy group details.
  • Self manages and discovers all nodes in the Orion network.
  • Provides an API for communicating between Orion nodes and an API for communicating with Ethereum clients (for example, Hyperledger Besu).
ConsenSys has acquired Quorum from J.P. Morgan. Please read the FAQ.
Questions or feedback? You can discuss issues and obtain free support on Orion Discord channel.
For paid professional support by Consensys, contact us at