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Secret Pineapple

Secretly order pineapple pizza and share your receipt with trusted third parties

Secret Pineapple

Created At

ETHGlobal New York 2025

Winner of

The Graph

The Graph - Best Application Built on Hypergraph 2nd place

Privy

Privy - Best Financial App Built on Privy

Project Description

Uncensorable, privacy preserving, itemized receipts with access control. We've built a point of sale that issues customers encrypted receipts from which they can reveal select information.

The experience is seamless for both the customer and the merchant. The customer scans a QR code to pay for their items and the app issues an encrypted receipt on Hypergraph accessible by only the customer and the merchant. Then the customer can share their encrypted receipts with any trusted third parties they choose.

How it's Made

The Graph: we used private spaces on Hypergraph to encrypt the storage of our itemized receipt data so that users have a private record of their receipts.

Circle: we used Circle's payment gateway so that merchants can accept stablecoin payments on all the chains supported by Circle.

Privy: we used Privy for login and to create smart accounts for merchants and customers.

Nora: We used the AI dev environment to build our Circle Gateway integration.

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