Worldchain is an Ethereum Layer 2 built on the OP Stack and part of the Optimism Superchain. It is designed to scale blockspace for large human networks while keeping EVM compatibility and Ethereum settlement.
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 Worldchain: 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.
DeFi-focused OP Stack Ethereum L2.
Ethereum L2 and home of the OP Stack.
Two things and you are ready. A wallet that can hold Worldchain and a little ETH for gas on its chain, and the receiving address you want the output delivered to, which can be a raw address or a web3 name where the wallet resolves one. The preview shows the full picture before anything is signed: what leaves, what arrives, the fee, and the network cost. Nothing in the flow asks you to hand over keys; the wallet stays yours and signs only what you approved on screen.
Count the costs on one hand. On the platform side a flat 0.50% covers the swap, all-in, stated in the quote with no spread or routing cut behind the number. On the network side, gas in ETH, settling with about 2 sec blocks on Optimistic Rollup (OP Stack, Superchain), shown per leg before signature. Settlement runs on-chain to your chosen address at this asset's policy, Credited after L2 confirmation; deeper finality once the optimistic batch settles on Ethereum., and from confirmation onward the balance answers to your keys alone, spendable, sendable, and settled with no platform anywhere in the path.
The route runs on the aggregated DEX route, and atomicity is the property that matters: the approved number either happens in full or the transaction reverts with nothing moved but the attempt's gas. There is no resting state between legs where value sits in someone else's hands, and a route that misses your bounds simply fails clean, ready for a fresh quote. Cheap and loud beats silent and expensive as failure modes go.
One account unlocks accept, swap, buy, and the rest of the U.CASH network across 35 networks.