Storage

Midnight is built on the Polkadot SDK (Substrate) and uses ParityDB as its default database backend.

Storage stack

flowchart TB
  subgraph Runtime["Runtime execution"]
    STF["State transition function (WASM)"]
    PM["pallet-midnight + other pallets"]
  end

  subgraph Trie["State layer"]
    MPT["Patricia-Merkle trie"]
    T2H["twoxhash — storage key generation"]
    MPT --- T2H
  end