No chargebacks
ETH payments are final on-chain. No card-style disputes clawing funds back weeks later.
Pay any U.CASH merchant with Optimism. Your ETH settles final and direct from your wallet, with low fees and no chargebacks.
Crypto payments are final, global, and cheap. Optimism is a strong way to pay merchants directly.
ETH payments are final on-chain. No card-style disputes clawing funds back weeks later.
Pay any U.CASH merchant worldwide. No blocked regions, no currency conversion holds.
Network fees instead of card processing percentages, especially on efficient chains.
No card number to hand over. You sign a transaction from your own wallet.
Send to a web3 name (ENS, Unstoppable Domains, FIO) instead of a long address.
Merchants see your payment confirm quickly, then release goods or services.
Open a Pay-Now link, an invoice, or any U.CASH merchant checkout that accepts Optimism.
Select ETH as your payment method from the supported coins.
Send ETH to the merchant address, or web3 name, shown on screen.
The merchant watches the chain and releases your goods or services once Optimism confirms.
Any merchant running U.CASH Pay can take your ETH at checkout.
Pay a Pay-Now invoice or billing request in Optimism, straight from your wallet.
Support creators and causes with ETH, no intermediary taking a cut.
Pay merchants and converters face to face; they watch the chain for your payment.
Recurring billing handled per-cycle, settled direct to the merchant.
Pay agents per request over the HTTP-402 protocol using ETH.
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.
Final, low-fee, borderless payments direct from your wallet to the merchant.