Private by Default. Compliant by Choice.

A shielded stablecoin wallet on Stellar — private USDC payments powered by Zero-Knowledge Proofs, with selective disclosure for compliance.

Public blockchains expose every balance, payment, and financial relationship. Privacy networks hide everything — including from regulators. Neither works for real-world money.

DShield is the third model: prove what's true, reveal nothing else.

• 🛡️ Shielded pool — deposit USDC into a Merkle-tree commitment pool; withdraw to any address with a client-side ZK proof, breaking the on-chain link between depositor and recipient
• 🔁 Trustless relayer — the withdrawer's account never appears on-chain; recipient binding makes the relayer unable to steal, only refuse
• 🚫 Double-spend proof — nullifiers consumed on-chain; replayed proofs fail
• 📋 Selective disclosure — prove KYC status, jurisdiction, or balance thresholds to an auditor without exposing identity or unrelated transactions

All of this verifies on-chain using Stellar's native ZK primitives (Protocol 25/26: BN254 pairings, Poseidon hashing, MSM).

Live on Stellar testnet — a full deposit → ZK proof → relayed withdraw loop runs on-chain today, plus CLI-verified compliance and threshold-disclosure proofs. Currently fixed-denomination pools (10/100/1000 USDC tiers); arbitrary-amount private transfers are on the roadmap.

⚠️ Testnet demo — unaudited. Do not use on mainnet.

Contracts: Rust / Soroban · Circuits: Noir + Barretenberg (UltraHonk, keccak transform) · Hashing: Poseidon2 (BN254) · Frontend: Next.js + Stellar Wallets Kit · Tooling: just, stellar CLI, nargo, bb

git clone https://github.com/dshield-xyz/dshield && cd dshield
just setup          # check prerequisites
just test           # 85 contract + 50 frontend tests
just demo           # deposit → ZK proof → relayed withdraw, live on-chain
just demo-compliance # KYC registry → compliance proof → on-chain verification

Built for Stellar Hacks: Real-World ZK · License