Hinkal, a blockchain privacy infrastructure provider, has joined Mastercard's Crypto Partner Program, embedding confidential transaction technology into a global payments initiative at a time when stablecoins are expanding into payments, settlements and commercial transactions. The membership was announced on October 9.

The partnership connects Hinkal with Mastercard's digital asset ecosystem and opens a path for the company to bring privacy-preserving infrastructure into mainstream payment products. Hinkal's technology allows platforms to process private stablecoin transfers without publicly exposing transaction amounts or counterparty relationships. It relies on zero-knowledge proofs to verify that transfers are valid while keeping sensitive transaction details confidential. For businesses, the arrangement could make it easier to explore onchain payments without making their financial activity visible to everyone on public block.

Hinkal Brings Privacy Infrastructure to Mastercard's Program

Mastercard's Crypto Partner Program connects blockchain companies with the payments company's internal teams and a broader network of industry participants. Its members include stablecoin issuers, blockchain infrastructure providers, crypto card enablers and firms that support digital asset transactions.

According to an announcement from Hinkal, the initiative supports practical digital asset applications through partner collaboration, industry connections and go-to-market opportunities. Selected members can also access financial institutions across Mastercard's issuing and acquiring network, alongside regulatory and compliance support.

For Hinkal, joining the program creates an opportunity to bring confidential transaction infrastructure into payment products. Rather than requiring companies to build privacy systems independently, Hinkal lets wallets and platforms integrate its technology through software development kits (SDKs) and APIs. The infrastructure supports private settlements and payouts across fintech platforms, payment providers and wallets, and it operates on Ethereum, Polygon, Solana, TRON and other major EVM-compatible networks. Support for multiple networks means a single integration can reach products across several major chains.

Existing integrations show how the technology fits into products already serving users. Polygon Wallet offers a Private Send feature powered by Hinkal, and Tether's Wallet Development Kit includes the same private-send functionality. Turnkey wallets can add transaction privacy through Hinkal's SDK, while Avvio operates private payments through its interface. In each case, partner platforms can maintain their existing products while adding transaction confidentiality as an optional feature.

Hinkal has joined the @Mastercard Crypto Partner Program, bringing privacy infrastructure to its global payments ecosystem. The program connects blockchain innovators with the broader payments industry to advance practical applications of digital assets. As stablecoins expand…

— hinkal (@hinkal_protocol) October 9, 2026

Why Stablecoin Payment Privacy Matters

Stablecoins can transfer value around the clock, but public blockchains record every transfer permanently, so financial relationships and payment amounts can be observed by anyone. That transparency can create challenges for businesses handling payroll, supplier payments, treasury movements and other commercially sensitive transactions.

Hinkal addresses the problem with zero-knowledge proofs, a cryptographic technique that lets a network verify transfers without publicly revealing their underlying details. The system keeps transaction amounts, senders and recipients confidential from public observers, allowing businesses to keep payment flows private while still settling onchain.

Privacy does not mean eliminating compliance oversight, however. Privacy tools that conceal onchain activity have drawn regulatory attention in the past over money-laundering concerns, which makes built-in controls a central question for any mainstream payment deployment. According to Hinkal, funds undergo screening before entering its system, while viewing keys allow users and businesses to share transaction histories with authorized auditors or regulators. The approach aims to balance confidentiality with the scrutiny required for regulated financial activity, and it could prove useful as payment providers explore stablecoins for cross-border transfers, business transactions and settlement flows.

Mastercard's program provides a framework for connecting these technical capabilities with established payment infrastructure. Still, Hinkal's membership does not by itself confirm a direct product integration with Mastercard or an imminent commercial launch. Concrete follow-through, such as joint product work or pilot deployments, would signal a next phase, and none has been announced so far.

Source: Blockonomi