███████╗ ██╗ ██████╗
██╔════╝ ██║ ██╔══██╗
███████╗ ██║ ██████╔╝
╚════██║ ██║ ██╔═══╝
███████║ ██║ ██║
╚══════╝ ╚═╝ ╚═╝

SIP (Shielded Intents Protocol) is the privacy standard for Web3. One toggle to shield your sender, amount, and recipient—while maintaining compliance with viewing keys. Works for same-chain AND cross-chain transactions.

// Create a private cross-chain swap
const intent = await sip
  .intent()
  .input('solana', 'SOL', 1_000_000_000n)
  .output('zcash', 'ZEC', 50_000_000n)
  .privacy(PrivacyLevel.SHIELDED)  // ← One toggle
  .build()

Enables:

• ✅ Hidden sender identity (Pedersen commitments)
• ✅ Hidden transaction amounts
• ✅ Unlinkable recipients (stealth addresses)
• ✅ Selective disclosure for compliance (viewing keys)
• ✅ Multi-chain privacy via NEAR Intents

# npm
npm install @sip-protocol/sdk

# pnpm
pnpm add @sip-protocol/sdk

import { SIP, PrivacyLevel } from '@sip-protocol/sdk'

// Initialize
const sip = new SIP()

// Create private cross-chain swap
const intent = await sip
  .intent()
  .input('solana', 'SOL', 1_000_000_000n)
  .output('zcash', 'ZEC', 50_000_000n)
  .privacy(PrivacyLevel.SHIELDED)
  .build()

// Intent now has:
// - Hidden sender (Pedersen commitment)
// - Hidden amount (Pedersen commitment)
// - Stealth recipient address

// Generate viewing key for auditors
const viewingKey = sip.generateViewingKey('/m/44/501/0/audit')

// Create compliant private intent
const intent = await sip
  .intent()
  .input('ethereum', 'ETH', 1_000_000_000_000_000_000n)
  .output('near', 'NEAR', 100_000_000_000_000_000_000_000n)
  .privacy(PrivacyLevel.COMPLIANT)
  .build()

// Auditor can decrypt transaction details with viewingKey

┌─────────────────────────────────────────────────────────────┐
│                    SIP PROTOCOL STACK                       │
├─────────────────────────────────────────────────────────────┤
│  PRIVACY LAYER (SIP)          ← We build this               │
│  • Pedersen Commitments  • Stealth Addresses                │
│  • Viewing Keys          • Shielded Intents                 │
├─────────────────────────────────────────────────────────────┤
│  SETTLEMENT LAYER             ← We leverage this            │
│  • NEAR Intents         • Chain Signatures                  │
├─────────────────────────────────────────────────────────────┤
│  BLOCKCHAIN LAYER             ← We connect to this          │
│  • NEAR  • Ethereum  • Solana  • Bitcoin  • More...         │
└─────────────────────────────────────────────────────────────┘

SIP is an application layer that complements NEAR Intents and Zcash—not a competing infrastructure protocol.

"Bridging tokens is easy, bridging secrets is hard." — a16z Crypto, Big Ideas 2026

SIP is the privacy layer that makes bridging secrets possible.

Cross-chain transactions are public by default:

• ❌ Anyone can see your wallet address
• ❌ Anyone can see transaction amounts
• ❌ Anyone can link your transactions
• ❌ No privacy = security risk for high-value users

SIP adds privacy to NEAR Intents:

• ✅ Stealth addresses - One-time recipient addresses
• ✅ Pedersen commitments - Hide amounts cryptographically
• ✅ Viewing keys - Selective disclosure for compliance
• ✅ Multi-chain - Works across any NEAR-connected chain

• Phase 1: Foundation — Core crypto, NEAR Intents, Zcash
• Phase 2: Standard — Multi-backend, 15+ chains support
• Phase 3: Ecosystem — Compliance, React/CLI/API packages, hardware wallets
• M16: Narrative Capture — Content campaign, community, 25 blog posts

• M17: Solana Same-Chain Privacy — Native SDK + Jupiter DEX integration (Complete Jan 2026)

• M18: Ethereum Same-Chain Privacy — Base L2 + Solidity contracts

• M18: Ethereum Same-Chain — EVM privacy + L2 support
• M19-M21: Technical Moat — Proof composition, SIP-EIP standard

• ⭐ Star repositories you find useful
• 🐛 Report issues to help us improve
• 💡 Suggest features in GitHub Discussions
• 🔧 Submit PRs with improvements