Non-custodial
ETH settles straight to your wallet. U.CASH routes and notifies, it never holds your funds.
Accept ETH and ERC-20 tokens on Optimism, fully non-custodial, with fast two-second L2 blocks.
Merchants choose U.CASH to take ETH without giving up custody or control.
ETH settles straight to your wallet. U.CASH routes and notifies, it never holds your funds.
Offer fiat cards through your own merchant account in the same checkout, side by side with ETH.
Your logo, colors, and domain. The payment surface is yours; U.CASH is just the rails.
A flat fee per transaction, no spreads, no hidden routing cuts. You see exactly what you pay.
Anyone with a Optimism wallet can pay. No chargebacks, no geography holds.
You set what counts as paid. Tune the confirmation policy for ETH per store.
Sign up at U.CASH Pay and create a checkout that accepts Optimism alongside cards on 35 networks.
Send a Pay-Now link, drop in the universal embed, or call the API server-side.
The payer chooses Optimism from any wallet. U.CASH watches the chain against your confirmation policy.
Once confirmed, ETH settles on-chain to the address you control, with a signed webhook.
Live in minutes. Drop a button on any site, or call the API server-side.
Create checkouts server-side with signed, replay-safe webhooks. Build any flow.
A universal embed script and Pay-Now buttons for any website, no backend needed.
WooCommerce, Shopify, Magento, and 125+ integrations across the stack.
Email a Pay-Now link or a full invoice and get paid without a storefront.
Mobile POS apps and donation overlays for in-person and creator use.
Pay and pay out to ENS, Unstoppable Domains, and FIO handles, not raw addresses.
On-chain, peer to peer, direct to the wallet address you configured. No pooled balance.
Optimism default policy: Credited after a few L2 confirmations, typically under a minute; settles to Ethereum L1.. Adjustable per store.
Auto-forward to an xpub or address, or hold in your own wallet and withdraw anytime.
The leading smart-contract blockchain and home of ERC-20.
Ethereum L2 built on the OP Stack.
Leading Ethereum L2 by activity.
EVM sidechain built for fast, cheap payments.
The original proof-of-work blockchain and largest cryptocurrency.
High-throughput EVM chain for consumer apps.
Getting started takes a wallet and an address. The wallet needs to hold Optimism and a little ETH for gas on its chain; the address is where the output lands, raw hex or a resolvable web3 name both work. From there the flow is preview-first: what leaves, what arrives, the fee, and the network cost all sit on one screen before a signature happens. Keys never leave your side at any point, and the only thing the wallet ever signs is the exact transaction you read.
The cost picture is two lines. The platform side is a flat 0.50% all-in on the swap, quoted before you sign, with no spread and no routing cut behind it. The network side is gas paid in ETH, settling with about 2 seconds blocks on Optimistic Rollup (OP Stack), which the preview itemizes per leg. Settlement is on-chain to the address you chose: Credited after a few L2 confirmations, typically under a minute; settles to Ethereum L1. on this asset, after which the balance is spendable and non-custodial in the fullest sense, yours to move with no platform in the path.
Underneath, the aggregated DEX route executes the trade with all-or-nothing semantics: partial fills do not exist here, and a route unable to meet the bounds you approved reverts the whole transaction rather than settling something worse. Your exposure window between legs is therefore zero, the only cost of a failed attempt is its gas, and re-quoting is a click.
Non-custodial checkout for ETH and 35 networks, live in minutes.