In development · Join the early access list

One app.
Every way to pay.

End to end, no middleman. OnePayButton connects exchanges, wallets, card networks, and payment services in one place. Pay with any currency or digital asset. The merchant gets paid in the currency they charge.

Join the waitlist Add OnePayButton to your store

Built in Iceland. Launching in stages. No spam, ever.

Checkout illustration: choose how to pay, OnePayButton routes it, merchant receives their currency
Illustration · in development

The problem

Money moves in too many directions

You hold Bitcoin. The café charges in krónur. Your card is in euros. The online shop only takes US dollars.

Today, that means extra apps, extra steps, and extra fees. You sell on one exchange, move funds to another, wait, and then pay. Many people just give up.

Merchants have the same headache from the other side. Every new payment method means a new provider, a new contract, and a new dashboard. Most shops can't take crypto at all, and the ones that do often end up holding assets they never wanted.

The money is there. The connection isn't.

We've been working on this since 2025, from Iceland.

How it works

One app on top of the payment world

OnePayButton doesn't replace your exchange, wallet, or card. It connects them. Behind one simple screen, OnePayButton routes each payment through the providers that can complete it, and handles the conversion along the way.

  1. 1Step 1

    The merchant sets the price.

    A shop charges in its own currency, for example EUR, ISK, or USD. In store or online.

  2. 2Step 2

    You choose how to pay.

    Open OnePayButton, or tap the OnePayButton at checkout. Pick what you want to pay with: BTC, XRP, ETH, USDC, SAGA, BNB, Base, or a card.

  3. 3Step 3

    OnePayButton finds the route.

    OnePayButton compares available routes across connected providers (exchanges, swap aggregators, and fiat payment rails) and picks a path to convert your asset into the merchant's currency. You see the total before you confirm.

  4. 4Step 4

    Everyone gets what they want.

    You pay in what you hold. The merchant receives the currency they charged in. One tap, no juggling.

OnePayButton is in development. Routing, provider connections, and supported regions will be released in stages.

For shoppers

Pay with what you have

  • One app instead of five. Your crypto, your cards, and your payment accounts in one place, all accepted wherever OnePayButton is.

  • No manual conversion. No selling first, transferring, and waiting. OnePayButton handles the conversion as part of the payment.

  • See the price up front. You see what you'll pay, in your chosen asset, before you confirm.

  • Your keys, your choice. Connect your own wallet. Where possible, swaps happen without OnePayButton holding your funds.

  • Travel-friendly. Visiting Iceland, Europe, or the US? Pay local prices without hunting for an exchange office.

Get early access

For merchants

Get paid in your currency. Accept almost anything.

Your customers want to pay in their way. You want to get paid in yours. OnePayButton is built to do both.

  • Settle in your own currency. Charge in EUR, ISK, or USD. Receive the same. No crypto on your books unless you want it.

  • Reach new customers. Accept crypto holders and international visitors without building anything new.

  • One integration, many payment methods. Instead of signing up with a new provider for each method, add one button.

  • Works where you sell. Planned plugins and widgets for Shopify, WooCommerce, Webflow, and Wix, plus a QR flow for physical stores.

  • Simple to try. Paste a snippet, set your currency, and you're ready. No developer needed for standard setups.

Merchant onboarding will open in stages. Join the merchant waitlist to be among the first.

Join the merchant waitlist

For developers

Drop in a button. We handle the routes.

OnePayButton is designed to be embedded in a few lines: a React component and a JavaScript widget for Shopify, Webflow, WooCommerce, Wix, or any HTML page. Both are in development.

What's under the hood (in development):

  • Aggregator swap routing: compares routes across decentralized exchange aggregators (1inch-style) and liquidity sources for the best available path.
  • Wallet connect: customers connect the wallet they already use.
  • Fiat checkout rail: card and bank payments, plus fiat settlement to merchants through licensed third-party partners.
  • Webhooks and callbacks: get notified when a payment completes.

The embed scripts are shared on request. Ask through the form and we will send you the code.

Request the scripts

Supported currencies

What you'll be able to pay with and get paid in

Pay withStatus
Bitcoin (BTC)Planned for launch
XRPPlanned for launch
Ethereum (ETH)Planned for launch
USD Coin (USDC)Planned for launch
Saga (SAGA)Planned for launch
BNB (BNB Smart Chain)Planned for launch
Base networkPlanned for launch
Debit and credit cardsPlanned for launch
Merchants get paid inStatus
Euro (EUR)Planned for launch
Icelandic króna (ISK)Planned for launch
US dollar (USD)Planned for launch

More currencies, assets, and providers will follow. The goal is simple: if you can hold it, you should be able to pay with it.

Availability will depend on region and on our partners' coverage.

Security and compliance

Built carefully, from the start

Payments are about trust. Here is how we're approaching it, in plain words.

  • Non-custodial where possible.

    For crypto swaps, the goal is that funds move from your wallet through the route without OnePayButton holding them.

  • Licensed partners for fiat.

    Card payments, bank transfers, and fiat payouts will be handled through licensed, regulated payment partners, not by OnePayButton alone.

  • Identity checks where the law requires them.

    Some payments and payouts will need verification (KYC/AML). We'll tell you when and why.

  • Clear pricing before you pay.

    You see the amount and the route before you confirm. No surprises after.

  • Security first in development.

    We're building with security reviews as part of the process, and we'll share more as the product matures.

OnePayButton is in development. We will publish details about partners, licensing, and security reviews when they are in place, not before.

For partners and investors

The layer that connects the payment world

Payment platforms don't talk to each other well. Exchanges, wallets, card networks, and payment apps each have their own users and their own rails. OnePayButton aims to be the one layer on top that routes between them, so any user can pay any merchant, in any currency.

Why it matters:

  • Crypto holders want to spend without cashing out first.
  • Merchants want new customers without new risk.
  • Travelers and cross-border shoppers want local prices without friction.
  • Payment platforms gain reach when their users can pay anywhere.

Who we'd like to talk to:

  • Payment platforms and super-apps. X Money users can already join our waitlist. OnePayButton aims to fit alongside platforms like X Money, Binance, and OKX by extending where their users can pay and what they can pay with.
  • Exchanges, liquidity providers, and wallets that want more real-world spending flow.
  • Licensed payment and e-money institutions for fiat rails and settlement.
  • Investors who believe payments should work across every currency and asset.
X Money users + OnePayButton waitlist

We're at an early stage and building in Iceland. If this is your space, we'd like to hear from you.

Talk to the founder

FAQ

Questions, answered

What is OnePayButton?

OnePayButton is one app and one checkout button that connects many payment providers: exchanges, wallets, card rails, and payment services. You pay with what you hold. The merchant gets paid in the currency they charge.

Is OnePayButton live yet?

Not yet. OnePayButton is in development. Join the waitlist and we'll let you know when early access opens in your region.

Which currencies will I be able to use?

At launch we plan to support BTC, XRP, ETH, USDC, SAGA, BNB (BNB Smart Chain), Base, and cards, with merchant payouts in EUR, ISK, and USD. More will follow.

Does OnePayButton hold my money?

For crypto swaps, we're designing OnePayButton to be non-custodial wherever possible, so funds move from your wallet through the route without us holding them. Fiat payments go through licensed partners.

What does it cost?

Pricing isn't final yet. Our commitment: you'll always see the full cost before you confirm a payment.

I run a shop. Do I need to accept crypto on my books?

No. The idea is that you charge in your own currency and receive your own currency. The conversion happens before it reaches you.

Which platforms will the OnePayButton work with?

We're building a React component and a JavaScript widget, with planned support for Shopify, WooCommerce, Webflow, Wix, and plain HTML sites.

Who is behind OnePayButton?

OnePayButton was founded by Berglind Saga B in Iceland, together with a team of legendary superintelligence (SI) agents who are also founders of the project. We're a strong team building in the open, and we're happy to talk.

Contact / waitlist

Be first in line

OnePayButton is opening in stages. Tell us who you are and we'll reach out when it's your turn.

Partners and investors
Prefer to talk directly? Email the founder, Berglind Saga B, at saga@onepaybutton.com with “Partnership” in the subject line.