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Shinobi Cash

Cross-chain privacy protocol powered by Privacy Pools and zero-knowledge proofs.

Who This Documentation Is For

What is Shinobi Cash?

Shinobi Cash is a cross-chain privacy protocol that enables private transactions across the Ethereum ecosystem. Deposit from any chain, withdraw to any chain — all while maintaining privacy through a unified pool.

Key Features:
  • Cross-Chain Privacy — Deposit on Base, withdraw on Arbitrum (or any supported chain)
  • Unified Anonymity Set — One pool across all chains means stronger privacy
  • Compliant by Design — Prove your funds came from a compliant source without revealing which deposit is yours
  • No Gas Required — Withdraw without ETH; gas is paid from your withdrawal via ERC-4337

How It Works

For Users

  1. Connect Wallet — Sign in with your wallet to derive your private keys
  2. Deposit — Send ETH to the privacy pool from any supported chain
  3. Wait for Activation — Your deposit enters the anonymity set
  4. Withdraw — Withdraw to any address on any supported chain using a zero-knowledge proof

The Technology

Shinobi Cash combines several cutting-edge technologies:

  • Privacy Pools — Merkle tree commitments and nullifiers for privacy
  • Zero-Knowledge Proofs — Groth16 SNARKs prove withdrawal validity without revealing the deposit
  • Open Intent Framework (OIF) — Cross-chain settlement via solvers and oracles
  • Association Set Providers (ASPs) — Enable compliance without surveillance

Why Shinobi Cash?

Unified Pool = Stronger Privacy

Traditional privacy solutions fragment users across chains. Each chain has its own small pool, weakening the anonymity set.

Shinobi Cash treats the Ethereum ecosystem as a single privacy domain. One pool. Every chain. Maximum anonymity.

Compliant, Not Shady

Privacy doesn't mean hiding from regulators. With ASPs, you can prove your funds came from a compliant source — without revealing which deposit is yours.

Simple User Experience

  • No complex bridging — deposit and withdraw seamlessly across chains
  • No wallet gas needed — relay fee deducted from withdrawal amount
  • One unified interface — manage all your privacy across chains

Get Started