SIP Protocol

Privacy by Default. Freedom by Design.

Built at Zypherpunk

Created on 3rd December 2025

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SIP Protocol

Privacy by Default. Freedom by Design.

The problem SIP Protocol solves

Blockchain rn is basically a public ledger where everyone sees everything - your wallet, amounts, who you send to. bots front-run your swaps, MEV extracts value from you, and your entire financial history is public forever. not great.

SIP adds a privacy layer to cross-chain intents. one toggle to hide sender, amount, and recipient using stealth addresses + pedersen commitments + zk proofs. solvers can still fulfill your swap, they just cant see who you are. like HTTPS for blockchain - same UX, actual privacy. also has viewing keys so institutions can audit when needed.

Challenges I ran into

Stealth address math took forever - kept hashing hex strings instead of raw bytes, small bug but 2 days of debugging. also found out NEAR intents has no testnet so had to build mock solvers for testing and use real mainnet for integration tests with small amounts.

Getting noir circuits to compile for browser-based proofs was painful too. barretenberg dependency hell. but eventually got thousands tests passing so feeling pretty confident now.

Tracks Applied (12)

Cross-Chain Privacy Solutions

SIP is a privacy layer that could leverage mina's recursive proofs for ultra-efficient verification. current SIP archit...Read More

Mina Protocol

Cross-Chain Privacy Solutions

SIP is a privacy layer for cross-chain transactions. we sit between users and settlement layers (like axelar) to add pri...Read More

Axelar Network

Cross-Chain Privacy Solutions

SIP is privacy middleware for cross-chain swaps. we add stealth addresses, hidden amounts, and viewing keys to any cross...Read More

Osmosis

Cross-Chain Privacy Solutions

SIP enables private solana zcash swaps. why this matters for pump fun style apps: traders can buy without others front...Read More

Pump Fun

Cross-Chain Privacy Solutions

SIP adds privacy to solana zcash (and other chain) transactions. the problem: every solana tx is fully public - wallet...Read More

Helius

Private DeFi & Trading

SIP enables private DeFi trades across chains. the problem with current defi: everyone sees your swaps before they exec...Read More

Zcash Community Grants

Privacy Infrastructure & Developer Tools

SIP SDK is privacy infrastructure for developers. what we built: typescript SDK published on npm (@sip-protocol/sdk) st...Read More

Zcash Community Grants

Self-Custody & Wallet Innovation

SIP provides wallet adapters and privacy primitives for self-custody wallets. what we built: abstract wallet adapter in...Read More

Unstoppable Wallet

Private DeFi & Trading

SIP adds privacy to swaps and DeFi transactions. current state: every trade is public. your wallet, amounts, counterpar...Read More

Unstoppable Wallet

Cross-Chain Privacy Solutions

SIP uses NEAR Intents SDK to route cross-chain swaps through Zcash shielded pools. users can swap between solana, ethere...Read More

NEAR Protocol

Private Payments & Transactions

SIP enables private payments across chains using NEAR intents as the settlement layer. Right now if you pay someone on-...Read More

NEAR Protocol

General Bounty

SIP is a privacy layer for cross-chain intents. we add stealth addresses, pedersen commitments, and viewing keys to make...Read More

Project Tachyon

Technologies used

React

Node.js

JavaScript

Tailwind CSS

Discussion

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