PRIVATE SOL
TRANSFERS
Zero-knowledge privacy on Solana.
No pools. No relayers. No trust.
Privacy is a state transition, not a place.
WHY MILK?
NO POOLS
Your tokens stay in your control. No shared liquidity pool, no locked funds, no pool risk.
CLIENT-SIDE ZK
Groth16 proofs generated entirely in your browser. No middlemen, no trust assumptions.
ANY AMOUNT
Send any amount of SOL privately. No fixed denominations — UTXO model with change.
GROWING PRIVACY
Anonymity set = entire commitment tree. Every user makes everyone more private.
SOLANA-NATIVE
Built on SPL Account Compression and altbn254 syscalls. $0.01 per transaction.
OPEN SOURCE
Fully auditable Circom circuits, Anchor program, and Next.js frontend. Trust the code.
HOW IT WORKS
SHIELD
Connect your wallet and deposit any amount of SOL. A private commitment is created and stored in the Merkle tree. You receive a secret note — save it!
TRANSFER
Paste your secret note and enter the amount to send. A ZK proof verifies balance conservation in your browser. Two new notes are created — one for the recipient, one for your change. No SOL moves on-chain.
UNSHIELD
The recipient pastes their secret note and withdraws SOL to any wallet. A ZK proof verifies ownership without revealing the original sender. The link is broken.
ARCHITECTURE
Commitment = Poseidon(amount, nullifier, secret)
┌──────────────┐ ┌─────────────────┐
│ Browser │────▶│ Solana Program │
│ │ │ │
│ • Poseidon │ │ • Poseidon Tree │
│ • snarkjs │ │ • Root History │
│ • Groth16 │ │ • Nullifier PDAs │
│ proof gen │ │ • SOL Vault │
└──────────────┘ └─────────────────┘
│ │
▼ ▼
┌──────────────┐ ┌─────────────────┐
│ ZK Circuit │ │ Groth16 Verify │
│ (Circom) │ │ (alt_bn128) │
└──────────────┘ └─────────────────┘READY?
Start making private transfers on Solana. Your browser generates the proofs. Nobody sees who sent what to whom.
LAUNCH APP