Hinkal SDK
Embed confidential payments and settlement into existing systems — without changing wallets, contracts, or chains.
The Hinkal SDK lets platforms add privacy to on-chain transfers and settlement flows on Ethereum, Solana, and major EVM chains, while keeping custody, compliance, and routing unchanged.
It is designed for PSPs, wallets, payment stacks, and financial applications that need to operate on public blockchains without exposing sensitive transaction history.
Hinkal SDK - Complete toolkit for most integration use cases.
Hinkal Demo app - An example web application utilizing the Hinkal SDK.
The SDK abstracts all privacy mechanics. Developers call simple functions — Hinkal handles the rest.
What the SDK Enables
With a single integration, teams can support:
Confidential settlement and payouts
Execute on-chain transfers without publicly revealing sender, recipient, balances, or amounts.
Private treasury operations
Move funds internally or between counterparties without broadcasting inventory or strategy on-chain.
Public-to-public private transfers
Enable “send privately” from standard public wallets — no shielding UX, no new wallet model.
Selective disclosure for compliance
Viewing keys allow authorized parties to audit or monitor activity without making it public.
Integration Model
No smart contract changes required
No chain or liquidity migration
Non-custodial by design
Compatible with existing dashboards and workflows
Privacy is handled at the infrastructure layer, not the interface — so users and operators keep the same UX, while on-chain visibility is removed.
Supported Flow Types
Public → Public (Private Routing)
Sender is not publicly attributable.
Public → Private
Assets enter a confidential state.
Private → Private
Fully confidential transfers, the value of transfer is hidden.
Private → Public
Recipient is public, sender and history remain private.
Who Uses the SDK
Payment Service Providers (PSPs)
Wallets & embedded finance platforms
OTC desks & treasury systems
Payroll, payout, and settlement tools
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