Best-price routing
Every connected DEX, bridge, and exchange is scanned for the best output, then executed in one flow.
Buy ETH and tokens on Optimism non-custodial, delivered straight to your wallet.
Every connected DEX, bridge, and exchange is scanned for the best output, then executed in one flow.
Approve once and swap. ERC-20 trades can be a single signed transaction, no repeated approvals.
Move ETH between networks via cross-chain bridges, routed alongside the swap.
A flat fee on the output. No spreads, no hidden routing cuts.
Swaps settle on-chain to addresses you control. Your keys, your ETH.
ETH against thousands of assets, from majors to long-tail tokens.
Go to the Optimism buy page on U.CASH.
Choose any coin or token you hold to pay with.
Provide the wallet address, or web3 name, to receive ETH.
Confirm the route and price; ETH settles straight to your wallet, final and non-custodial from the first confirmation.
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.
Routed for the best net number and settled where you say, non-custodial.