The assets-mixer pallet is meant to expose a simple deposit/withdraw API and consume a merkle tree interface, implemented for example by the merkle pallet. The assets-mixer pallet uses pallet-assets assets to interface with the deposit and withdraw functionality.

The regular mixer follows similarly from the assets-mixer but uses ORML style tokens provided in the tokens to interface with the deposit and withdraw functionality.

The merkle pallet deals primarily with merkle tree storage and zero-knowledge proof verification of merkle membership proofs. This pallet exposes an API for mixers to consume and interact directly with the underlying merkle tree and zero-knowledge verifiers.

The tokens pallet provides a wrapper over ORML style tokens. It is taken and adapted directly from the ORML tokens repository. It is adapted to include functionality provided by the pallet-assets.

The traits library contains traits that are directly taken from ORML. This allowed us to extend our own token library and required a consistent underlying Substrate verision.

The utlities library contains helper functions, structs, and traits that are directly taken from ORML. This allowed us to extend our own token & trait library and required a consistent underlying Substrate verision.