Skip to content
Case study · Fintech and crypto

Stablecoin payments fintech: pay by scanning a QR code in Latin America, with route-governed pricing

For a fintech that pays out in local currency from stablecoins, KINTO built a scan-to-pay flow for Latin American instant-payment QR codes and per-route pricing governed from operations.

By KINTO · Published

Figures, each with its source

  • more than one, in Latin America

    instant-payment corridors integrated

    Measured

  • several

    payment interface languages

    Measured

Ranges or orders of magnitude where a figure could identify the client, each with its source.

How the transformation unfolded From the problem to what changed, in the five steps every KINTO case follows.

  1. Problem

    A payments infrastructure that converts stablecoins to local currency needed to reach more users and partners with a simple flow (scan a QR code to pay), run across several networks and wallets, meet identity verification for people and companies, and set prices per route from operations.

  2. Signals

    Four signals: market, business, user experience and support.

  3. How we understood it

    We read the quoting flow against the operations panel to trace how the price is calculated, audited pricing readiness per corridor, checked the QR codes against the current EMVCo standard, and wrote concurrency and liquidity-check specifications.

  4. What we built

    A new payment interface with a QR reader for the integrated instant rails, a withdrawal server for stablecoin wallets, a business onboarding portal, and per-route pricing as the single source of truth.

  5. Transformation

    Pricing became route-governed from operations, distribution expanded to more networks and wallets, and each payment now checks liquidity first and handles concurrency.

Before and after, by dimension Editorial levels from 0 to 4 read from the text of this case, never a figure drawn to scale.

  • Pricing control

    Before

    Control sought by operations (level 1 of 4)

    After

    Governed by route (level 4 of 4)

  • Payment flow

    Before

    No scan-to-pay (level 0 of 4)

    After

    Scan a QR to pay (level 4 of 4)

  • Distribution

    Before

    Fewer networks (level 2 of 4)

    After

    More networks and wallets (level 3 of 4)

  • Business onboarding

    Before

    Low cap, unverified (level 1 of 4)

    After

    Onboarding portal (level 3 of 4)

The four signals we read What the market, the business, the user experience and support were saying before KINTO built anything.

  • Market

    Latin American corridors with instant-payment rails and stablecoin wallets as a distribution channel, with a roadmap toward more countries.

  • Business

    Operations needed to control fees and limits per route from its panel; partners without business verification were held to a low cap.

  • User experience

    Interface fixes on small screens and QR amounts that had to be read unambiguously across different number formats.

  • Support

    The API needed explicit rejection messages (liquidity, unverifiable account, rail unavailable, limits).

How pricing and payments were checked
  1. Quoting vs. panel How the price is calculated
  2. Readiness per corridor Pricing audited route by route
  3. QR vs. the standard Checked against EMVCo
  4. Concurrency specs And liquidity checks

Connections

  • Quoting vs. panel → Readiness per corridor
  • Readiness per corridor → QR vs. the standard
  • QR vs. the standard → Concurrency specs

For a fintech that pays out in local currency from stablecoins, KINTO built a scan-to-pay flow for Latin American instant-payment QR codes and per-route pricing governed from operations.

Problem

A payments infrastructure that converts stablecoins to local currency needed to reach more users and partners with a simple flow (scan a QR code to pay), run across several networks and wallets, meet identity verification for people and companies, and set prices per route from operations.

Signals

  • Market: Latin American corridors with instant-payment rails and stablecoin wallets as a distribution channel, with a roadmap toward more countries.
  • Business: Operations needed to control fees and limits per route from its panel; partners without business verification were held to a low cap.
  • User experience: Interface fixes on small screens and QR amounts that had to be read unambiguously across different number formats.
  • Support: The API needed explicit rejection messages (liquidity, unverifiable account, rail unavailable, limits).

How we understood it

  • Reading the quoting flow against the operations panel, to trace how the price is calculated.
  • Pricing readiness audit per corridor.
  • Checking the QR codes against the current EMVCo standard.
  • Concurrency specifications and liquidity checks.

What we built and why

  • New payment interface: swap, scan to pay, dashboard, onboarding, light/dark mode and languages; a mode for mobile stablecoin wallets without their own contract.
  • QR reader for the integrated instant rails, validating the payment key before paying dynamic QR codes.
  • Interactive withdrawal server from wallets on a stablecoin network to local currency.
  • Business onboarding portal (company and owner verification).
  • Per-route pricing as the single source of truth (fee, fixed rate, minimums and maximums) with consistent reverse quoting.
  • Robustness: liquidity checks before payment and concurrency handling.

Why this way: Fees and limits live in one place that operations edits, so operations controls them without deploying code.

Transformation

  • Prices and limits governed per route from operations.

  • Distribution expanded to more networks and wallets.

  • Each payment now checks liquidity first and handles concurrency.

  • instant-payment corridors integrated: more than one, in Latin America (measured)

  • payment interface languages: several (measured)

What we don’t know yet

  • Volume, users or conversion: no evidence in what we can see.
Case studies

Related case studies

Fintech and crypto

Agentic websites

Fintech and crypto: websites where trust is built with clarity, not promises

Several fintech and crypto companies in Latin America and the US received bilingual sites from KINTO with segment landing pages, extensive FAQs and a layer that helps generative search engines cite them correctly.

Latin America, United States Read the case study

Have a problem like this?

Tell KINTO what is going on. The first conversation is to understand it, not to sell.

Book a call Contact