Unichain is a DeFi-focused Ethereum Layer 2 built on the OP Stack, part of the Optimism Superchain. It targets fast block times, low-MEV ordering, and roughly 95% lower gas than Ethereum mainnet.
Straight into the app: Swap ETH · Buy ETH · Get UCASH with ETH
Optimistic Rollup (OP Stack, Superchain). Settlement on U.CASH is non-custodial: every payment moves on-chain, direct to a wallet you control. Confirmation policy for Unichain: Credited after L2 confirmation; deeper finality once the optimistic batch settles on Ethereum..
A single U Account works across accept, swap, and buy. Pick where to start.
Take ETH in checkout alongside cards on 35 networks. White-label, non-custodial, live in minutes.
Trade ETH for any asset across the network, routed for the best price.
Get ETH with any asset you hold, one step, settled to your wallet.
Receive, hold, and settle ETH your way.
Tokens you can swap, accept, and settle on this network.
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.
OP Stack Ethereum L2 for scaled human networks.
Ethereum L2 and home of the OP Stack.
Getting started takes a wallet and an address. The wallet needs to hold Unichain 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.
Two costs, both visible up front. The platform charges a flat 0.50% all-in on the swap and nothing hidden behind it, no spread and no routing cut. The network charges its gas in ETH, settling with about 1 sec blocks on Optimistic Rollup (OP Stack, Superchain), itemized per leg in the preview. What settles is on-chain to the address you chose, under this asset's policy of Credited after L2 confirmation; deeper finality once the optimistic batch settles on Ethereum., and once confirmed the balance is entirely yours to move with no platform anywhere in the path.
Execution runs through the aggregated DEX route, which means the number you approved is the number that happens or the transaction reverts: swaps are atomic, with no half-settled state to unwind and no exposure window between legs. If a route cannot fill at your approved bounds it fails cleanly and you re-quote, which is the failure mode you want, cheap and loud rather than silent and expensive.
One account unlocks accept, swap, buy, and the rest of the U.CASH network across 35 networks.