ROZO Merchant POS is a proposed Zcash-powered point-of-sale flow for native ZEC payments for merchants in-real-life (IRL).
Problem
The project is motivated by the complaint directly from the merchant IRL we work with.
Customer paid ZEC for the coffee (bridge to USDC via NEAR intents) believe the payment succeeded. But the merchant cannot confirm the USDC payment because they haven’t receive the notification on our POS.
That delay breaks the restaurant workflow. In a busy cafe, the cashier are impatient to wait several minutes, and they do not understand the underlying route. The ZEC customer is often embarrassed for few minutes. The result is confusion: the customer thinks they paid, the merchant cannot confirm it over the counter.
Proposal
ROZO Merchant POS will is optimized for native ZEC checkout path for merchants IRL:
- Merchant POS App handles the native ZEC QR payment
- Fast transaction confirmation for micropayments through lightwalletd and mempool-level detection where appropriate.
- Payment confirm within 10 seconds (p98 17s) logic for eligible orders under $1,000.
Rozo already has a POS payment app. In comparable retail-payment flows, our optimized path has reached P98 completion within 17 seconds. We confirm the payment in mempool and ROZO absorbs the risk.
Grant Scope
Request: $48,000
Timeline: July 2026 - September 2026
Deliverables:
- A merchant-facing product (POS app) that separates detected, retail-confirmed, finalized, and manual-review states.
QR-based native ZEC payment requests for merchant orders. - Fast transaction confirmation for micropayments through lightwalletd and mempool-level detection where appropriate.
- Instant-offer (p98 seconds level) logic for eligible orders under $1,000.
- A live pilot with 1-2 showcase merchants.
We’d love your feedbacks
- Best practices for lightwalletd / mempool monitoring in a POS context
- Small-value retail risk before final confirmation
- Transparent-address pilot vs. shielded-first UX
- Metrics the Zcash community would consider useful