Nullifier.cash is a privacy-preserving transaction mixer on Solana that uses
zero-knowledge proofs (zkSNARKs) to break the link between deposit and
withdrawal addresses. Users can deposit SOL and withdraw to fresh addresses
after a time delay, providing transaction privacy while maintaining the
security and speed of the Solana blockchain. The protocol uses Groth16
zkSNARK verification, SHA256-based cryptographic commitments, and Poseidon
hash functions for Merkle tree proofs to ensure maximum privacy.
