The QR rail, on-chain. Shoppers pay in any token they hold. Merchants receive stable. Singapore's SGQR rail is live today — every other QR rail is next.
Point at any SGQR sticker
Paid · S$14.20
Read any SGQR. Resolve the merchant on-chain. Quote it with Pyth.
Quay parses EMVCo-MPM QR data — SGQR today, with DuitNow, QRIS, UPI and PIX coming next. The merchant UEN resolves to an on-chain record. Pyth streams SUI/SGD in under 400ms.
qr = SGQR (EMVCo-MPM) uen = 5012345678X merchant = Koufu Ang Mo Kio amount = S$14.20 price = 1 SUI = 4.812 SGD (Pyth)
Pick any token. Cetus finds the best path across Sui liquidity.
Every swap routes through Cetus, which aggregates across Sui DEXs. Slippage is capped at your ceiling and the Pyth confidence interval guards the quote against stale or wide pricing.
pay with = 2.951 SUI via = SUI → USDsui routed by = Cetus max slip = 0.30% guard = Pyth conf < 0.30%
One PTB. Atomic swap and transfer. On-chain receipt.
Both legs happen in a single Programmable Transaction Block — either the merchant gets paid in full or the whole transaction reverts. zkLogin sponsors gas; the receipt lives on Walrus, GST-ready for tax.
tx = PTB · 0x9c2a…f01ad sent = 14.20 USDsui recipient = Koufu Ang Mo Kio gas = sponsored (zkLogin) finality = 1.42s