A zero-knowledge privacy protocol for the NOCTIS token on Base. Deposit NOCTIS into a shielded pool and withdraw to any address - breaking the on-chain link between sender and receiver.
- Deposit: Deposit NOCTIS tokens → receive a private "note" containing your secret keys
- Withdraw: Generate a ZK proof proving you own a valid note → withdraw to any address
- Privacy: The ZK proof reveals nothing about which deposit you're spending. Deposits and withdrawals are completely unlinkable.
- Smart Contracts: Solidity + Foundry
- ZK Proofs: Groth16 via circom/snarkjs
- Hash Function: Poseidon on BN254 (alt_bn128)
- Merkle Tree: 20 levels
- Chain: Base
User deposits NOCTIS
↓
┌─────────────┐
│ BalanceVault │ ← Stores commitment in Merkle tree
└─────────────┘
↓
User receives Note (spendingKey, randomness)
↓
User generates ZK proof in browser
↓
┌─────────────┐ ┌──────────────┐
│ BalanceVault │ ──→ │ Verifier │ ← Validates proof
└─────────────┘ └──────────────┘
↓
NOCTIS sent to recipient (no link to deposit)
| Contract | Address |
|---|---|
| NOCTIS Token | 0xdb9446b980e6765B0f90f355eB761936BB466b07 |
| Privacy Vault (NOCTIS) | 0x4648A39170863c6E1E3892187f63B8889Fc30d61 |
| Privacy Vault (ETH) | 0x05D1cc939b2F8528eF5b7d9C09A653a9119d28f5 |
| Verifier | 0x48f8aBbf907A378d39ADc3B54773dB57abba9e17 |
| Treasury | 0x413e62A6FDFe4DaAf71b10d1B23D0a57BFb21330 |
All contracts deployed on Base
- Notes are bearer assets - anyone with the note can withdraw
- Back up your notes - lost notes = lost funds
- Secrets stay client-side - spending keys never touch the blockchain
NOCTIS is the only token on Base with native ZK privacy. To use the privacy vault, you must hold NOCTIS - creating natural demand from anyone seeking private transactions.
Future utility:
- Pay fees in NOCTIS for multi-token privacy (ETH, USDC)
- Staking rewards for liquidity providers
- Governance over protocol parameters
| Phase | Status | Description |
|---|---|---|
| 1 | Complete | ZK privacy vault with Groth16 proofs and Poseidon hashing, enabling fully private NOCTIS transfers on Base |
| 2 | Complete | Native ETH privacy vault with 0.5% deposit fee |
| 3 | Planned | Multi-token privacy pools supporting USDC, USDT, and more |
| 4 | Planned | Cross-chain privacy bridge enabling private transfers across multiple networks |
BUSL-1.1 - see LICENSE for details.