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The following diagram outlines the GoQuorum high-level architecture.

GoQuorum Architecture diagram

Differences from geth

GoQuorum is a lightweight fork of geth. GoQuorum is updated as geth releases occur.

GoQuorum includes the following changes to geth:

  • Consensus is achieved with the Istanbul BFT, QBFT, or Raft consensus protocols instead of proof of work.
  • The P2P layer is changed to only allow connections between permissioned nodes.
  • The block generation logic is changed to replace the global state root check with a global public state root check.
  • The block validation logic is changed to replace the global state root in the block header with the global public state root.
  • The State Patricia trie is split into two: a public state trie and a private state trie.
  • Block validation logic is changed to handle private transactions.
  • Transaction creation is changed to allow for replacing transaction data with encrypted hashes to preserve private data where required.
  • The pricing of gas is removed unless explicitly enabled. Gas itself remains.

For more information about the GoQuorum architecture and its differences from geth, contact us on GoQuorum support.