Node: A Privacy Layer for Stablecoin Payments

Node is building a privacy layer for stablecoin payments and trading on public chains. In an onchain economy where transparency is the default, institutions and users demand selective privacy — one that is encrypted, auditable, and programmable.

The Problem

Current blockchains expose all transaction metadata, including balances and identities.
This is a major blocker for institutional adoption.
Even with ZK and token extensions (e.g., Solana confidential tokens), UX is broken and compliance is rigid.

The Solution: Node's Privacy Infrastructure

We propose a modular privacy stack — combining encrypted re-layers, cross-chain mint/burn logic, and audit-accessible view keys to enable programmable confidentiality.

Core Components

1. BlackBox Washer

Encrypted re-layer contract that accepts stablecoin deposits.
Processes through a dark pool and issues anonymized output.
Optional ZK or FHE proofs, fully self-custodial.

2. Cross-Chain Mixer Engine

Breaks token trail via burn/mint using Circle CCTP.
Fast, gas-efficient and regenerates token IDs.

3. Compliance Console

Audit dashboard for regulators with programmable view keys.
Filter metadata, monitor transactions, export reports.

4. SDK & API Gateway

REST & gRPC API options.
Wallet-side encryption and ZK integration.
Easy embedding via SDKs.

Key Advantages

No Viewing Keys Needed: Default shared network view key, optional programmable ones.
Wallet-Compatible: Works with MetaMask, WalletConnect, Ledger.
Composable: Private payments for DeFi, streaming, trading.
Audit-Ready: Delegate view access for compliance.
Modular: Use Washer, API, or Console independently.