Accept payments

Accept Unichain (ETH) payments

Accept ETH and ERC-20 payments on Unichain with non-custodial checkout and low-MEV block production.

Why accept Unichain

Merchants choose U.CASH to take ETH without giving up custody or control.

Non-custodial

ETH settles straight to your wallet. U.CASH routes and notifies, it never holds your funds.

Cards too

Offer fiat cards through your own merchant account in the same checkout, side by side with ETH.

White-label

Your logo, colors, and domain. The payment surface is yours; U.CASH is just the rails.

Low, transparent fees

A flat fee per transaction, no spreads, no hidden routing cuts. You see exactly what you pay.

Global by default

Anyone with a Unichain wallet can pay. No chargebacks, no geography holds.

Per-coin finality

You set what counts as paid. Tune the confirmation policy for ETH per store.

How Unichain payments work

Step 01

Create your checkout

Sign up at U.CASH Pay and create a checkout that accepts Unichain alongside cards and 30+ other chains.

Step 02

Share the link or embed

Send a Pay-Now link, drop in the universal embed, or call the API server-side.

Step 03

Customer pays in ETH

The payer chooses Unichain from any wallet. U.CASH watches the chain against your confirmation policy.

Step 04

Settle to your wallet

Once confirmed, ETH settles on-chain to the address you control, with a signed webhook.

How to start accepting Unichain

Live in minutes. Drop a button on any site, or call the API server-side.

<!-- Universal embed: accepts ETH and 30+ chains -->
<script src="https://pay.u.cash/js/client.js" async></script>
<div data-uxc="checkout" data-title="Unichain payment"></div>

Ways to accept Unichain

API

Create checkouts server-side with signed, replay-safe webhooks. Build any flow.

Embed and buttons

A universal embed script and Pay-Now buttons for any website, no backend needed.

E-commerce plugins

WooCommerce, Shopify, Magento, and 120+ integrations across the stack.

Invoices and requests

Email a Pay-Now link or a full invoice and get paid without a storefront.

POS and donations

Mobile POS apps and donation overlays for in-person and creator use.

Web3 names

Pay and pay out to ENS, Unstoppable Domains, and FIO handles, not raw addresses.

Fees and settlement

Settlement

On-chain, peer to peer, direct to the wallet address you configured. No pooled balance.

Confirmations

Unichain default policy: Credited after L2 confirmation; deeper finality once the optimistic batch settles on Ethereum.. Adjustable per store.

Payouts

Auto-forward to an xpub or address, or hold in your own wallet and withdraw anytime.

Accept more than Unichain

Ethereum (ETH)

The leading smart-contract blockchain and home of ERC-20.

Base (ETH)

Ethereum L2 built on the OP Stack.

Arbitrum (ETH)

Leading Ethereum L2 by activity.

Polygon (POL)

EVM sidechain built for fast, cheap payments.

Worldchain (ETH)

OP Stack Ethereum L2 for scaled human networks.

Optimism (ETH)

Ethereum L2 and home of the OP Stack.

Accepting Unichain: FAQ

How do I accept ETH payments on Unichain?
Generate a Unichain checkout from your U.CASH merchant account. Customers pay ETH or supported tokens, funds land in your non-custodial wallet, and the transaction confirms in about a second.
Are Unichain payments non-custodial?
Yes. Funds go directly to a wallet you control. U.CASH never holds or custodies the assets.

Start accepting Unichain today

Non-custodial checkout for ETH and 30+ chains, live in minutes.