02 · Green Checkout Case Study
The HiddenReceipt
Every payment leaves a financial receipt — and an environmental one.
We only see the first. The second is spread across plastic, paper, terminals, data centers and settlement layers.
SlicePay turns QR, POS and web checkout into stablecoin settlement, loyalty and staff rewards — while making the environmental footprint of commerce visible, measurable and improvable.
Inside the case study
- End-to-end design target vs. Visa operational energy allocation per transaction
- TradFi lifecycle carbon vs. optimized digital payment architecture
- Why programmable rails create the raw material for per-payment accountability
- SlicePay's 1.9% unified fee with stablecoin settlement and merchant outcomes
- Directional evidence on Solana network energy and SlicePay design budget
- Roadmap from telemetry today to verified CO₂e receipts tomorrow
Directional research brief. Product-level lifecycle assessment proposed.
Solana rail0.00412 Wh / tx
vs Visa ops~241× lower allocation
SlicePay fee1.9% total
Digital vs card0.74 g vs 2.45 g lifecycle