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Polygon activated shielded stablecoin transfers in its native wallet on May 4, 2026, using zero-knowledge proofs to conceal the sender, receiver, and transaction amount for every USDC and USDT transfer.
Built with privacy protocol Hinkal, the system routes payments through a shielded liquidity pool while still allowing transactions to remain publicly verifiable, but without exposing sensitive counterparty or value data. Polygon Labs argues that the lack of transaction-level privacy has long been a key barrier preventing institutions from moving meaningful stablecoin volume onto public blockchains.
Private stablecoin payments are live in Wallets.
When a user chooses to privately send USDC or USDT on the Polygon Chain, the transfer routes through a shielded pool via @hinkal_protocol, instead of a standard onchain transfer.
Zero-knowledge proofs cryptographically confirm… pic.twitter.com/FJ4PYbLHFi
— Polygon | POL (@0xPolygon) May 4, 2026
Every shielded transfer undergoes Know Your Transaction (KYT) screening before execution, and Hinkal’s infrastructure lets users generate audit files for regulators or tax authorities. Polygon community lead Smokey framed the feature as “operational privacy,” designed to protect market-sensitive financial activity rather than bypass compliance.
For onchain payments to go mainstream, businesses need privacy.
Not “hide from regulators” privacy.
Operational privacy.
Payroll, vendor payments, treasury flows, supplier relationships, customer payments. None of that should be broadcast to the entire market by default.… https://t.co/BKFZW0cUk3
— smokey (@Smokey_) May 4, 2026
Polygon Labs CEO Marc Boiron noted that Hinkal gives businesses a compliance-embedded privacy path for payment flows, distinct from Railgun, which the network has supported since 2021.
Privacy can take multiple shapes onchain. Our job is to make the type of privacy you want available. We have had Railgun available since 2021.
Now you get another option that is easy for businesses to incorporate for their payments needs with compliance options built into it to… https://t.co/zV3ndCLx8B
— Marc | Polygon Labs (💜,⚔️, ※) (@0xMarcB) May 4, 2026
The system is non-custodial: funds never pass through Hinkal or any intermediary during transit. Developers can enable the feature via existing Polygon Wallet integrations without additional infrastructure.
The launch extends a concentrated institutional push that Polygon has been executing throughout 2026. In January, the company announced definitive agreements to acquire Coinme and Sequence for more than $250 million, targeting regulated fiat access and wallet infrastructure.
In April 2026, Polygon Labs entered talks to raise up to $100 million for its stablecoin payments business. The chain’s stablecoin market cap hit an all-time high of $3.66 billion on April 9, 2026, placing it eighth globally by that metric, according to on-chain data.
Meanwhile, competitors are accelerating similar privacy-focused initiatives. The XRP Ledger deployed a native ZK proof verifier via Boundless on April 14, 2026, currently live on testnet, aiming to bring compliant, shielded settlement to institutional payment flows. Aptos launched Confidential APT on April 24, 2026, applying ZK proofs to shield transfers of its native token.
While the launch marks a significant technical milestone, Hinkal’s shielded pool faces an acute liquidity constraint. Per Defillama, its total TVL sits at roughly $785,000 across all chains, with about $744,000 on Ethereum and only $1,356 on Polygon, at the time of writing. That’s a negligible share compared to Polygon’s $3.58 billion stablecoin market cap and multi-billion-dollar public transfer volumes.
Privacy protocols face a chicken-and-egg problem: institutions need deep shielded liquidity, but providers won’t supply it without demand. This has long constrained ZK systems.
Polygon and Hinkal have announced no incentives or liquidity seeding, framing the launch as a foundational step rather than an immediate institutional unlock.
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