Payy Card enables self-custodied stablecoin transactions with privacy protections using zero-knowledge proofs.
Payy by Polybase Labs has introduced the Payy Card, the first self-custodial Visa card that allows users to spend stablecoins in the real world while preserving privacy. The launch follows the passage of the GENIUS Act in the United States, which supports stablecoin adoption at both retail and institutional levels.
Unlike traditional crypto cards that expose transaction details on public blockchains, Payy Card uses zero-knowledge cryptography to conceal payment amounts. This ensures that balances and spending data remain private while maintaining regulatory compliance.
“Stablecoins will fail without privacy. Consumers and businesses will not accept their transactions being analysed and exploited,” said Sid Gandhi, CEO of Polybase Labs, the team behind the card. “Payy Card is the first time on-chain crypto can be spent privately in the real world.”
The card functions on Payy’s custom-built blockchain, Payy Network, which supports confidential stablecoin payments. It allows users to manage funds through the Payy Wallet app and deposit from multiple blockchains or linked bank accounts in supported regions. All funds remain under user control and cannot be frozen.
“Payy finally built a real alternative to consumer banking. You can now save and spend self-custodied stablecoins privately without ever knowing they’re on a blockchain. And it just works,” said Robert Leshner, Partner at Robot Ventures.
The tap-to-pay function features a visual indicator where the Payy logo lights up during transactions, marking the first use of this design in a blockchain-based card.
“Payy Network enables confidential and compliant stablecoin payments and access to integrated global fiat ramps. It will be available to developers later this year.”” said Calum Moore, CTO of Polybase Labs.
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