Institutions Need Privacy and Compliance to Bring Flow On-Chain

**Hinkal is building privacy infrastructure for institutional blockchain adoption.** CEO Jason Li of MPCVault discusses how the protocol's embedded privacy features are transforming enterprise finance. **Key architectural principles:** - Separated protocol into distinct layers with isolated responsibilities - Each layer (verification, records, actions, rules) can be independently audited and upgraded - Externally verifiable and deployed across Ethereum, Solana, and TRON **Recent integrations demonstrate institutional demand:** - Polygon integrated Hinkal for private stablecoin payments in their wallet - TRON deployment enables confidential settlements without exposing balances or payment history - Adopted by enterprise solutions including MPCVault ($8B monthly volumes), Rubic, and Request Network **Compliance features:** - Chainalysis KYT screening prevents high-risk addresses - Selective disclosure via viewing keys maintains auditability The protocol aims to make privacy default across blockchain ecosystems, addressing the primary blocker for institutional clients moving treasury operations on-chain.

**Hinkal Pay** has launched, enabling businesses and consumers to settle transactions with full confidentiality. **Key Features:** - Sender, recipient, and amounts remain private on-chain - Works with existing wallets, chains, and stablecoins - Supports confidential sending, receiving, and payouts - Maintains compliance through Chainalysis screening **How It Works:** Funds move to a confidential balance within Hinkal's smart contract, controlled by the recipient's existing wallet. Recipients can execute private payouts to vendors, employees, or partners, or send to public wallets while keeping the sender private. **Availability:** - Live on Ethereum, Base, Arbitrum, Polygon, Arc, and Optimism - Supports USDT, USDC, DAI, and ETH - All transactions screened before execution; high-risk addresses blocked The service builds on Hinkal's earlier Private Send feature, which enabled private top-ups for non-custodial crypto cards through Ether.fi integration.

**Hinkal has developed a privacy solution that addresses institutional needs while maintaining regulatory compliance.** The platform distinguishes itself through built-in verification hooks that allow institutions to execute private transactions without sacrificing audit trails. This approach solves a critical problem: institutions require privacy to protect trade strategies and prevent front-running, but compliance teams have historically rejected privacy tools that appear designed for illicit activity. **Key features include:** - ZK proofs for transaction privacy - Stealth addresses for user anonymity - UTXO pools on EVM chains - Multiple users operating through single addresses with zero information leakage The architecture was presented at Devcon Argentina by Hinkal's CTO, demonstrating enterprise-grade privacy that integrates seamlessly with existing DeFi protocols. The solution represents a shift from earlier privacy tools by prioritizing compliance alongside anonymity. Research credit: [@KeyringResearch](

**DeFi cards are bridging crypto and real-world spending**, but they expose a privacy gap. [Ether.fi Cash](http://Ether.fi) lets users spend stablecoins while earning 5.6% APY or borrow against yield-bearing assets without selling crypto. **The privacy problem**: All blockchain transactions are public. When you fund a DeFi card from your main wallet, anyone can trace the connection between your spending and investment activities. **Hinkal Wallet offers a solution** - a self-custodial private smart contract wallet that breaks on-chain links: - Deposit funds into Hinkal's shielded pool - Unshield the amount needed for your Ether.fi Cash vault - Transfer completes with no traceable connection to your source wallet This **preserves financial privacy** while maintaining full DeFi functionality. Users can spend, borrow, and transact confidently without exposing their broader portfolio activity. As DeFi integrates deeper into everyday payments, privacy solutions like Hinkal become essential for users who value financial confidentiality in transparent blockchain systems.