Arbitrum is an Ethereum Layer 2 optimistic rollup that batches transactions off-chain and posts them to Ethereum. It combines sub-second blocks with deep liquidity, making it a hub for DeFi and payments.
Optimistic Rollup. Settlement on U.CASH is non-custodial: every payment moves on-chain, direct to a wallet you control. Confirmation policy for Arbitrum: Credited after a few L2 confirmations, usually within seconds; settles to Ethereum L1 for finality..
A single U.CASH account works across accept, swap, and buy. Pick where to start.
Take ETH in checkout alongside cards and 30+ chains. 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.
The leading smart-contract blockchain and home of ERC-20.
Ethereum L2 built on the OP Stack.
Ethereum L2 and home of the OP Stack.
EVM sidechain built for fast, cheap payments.
The original proof-of-work blockchain and largest cryptocurrency.
High-throughput EVM chain for consumer apps.
One account unlocks accept, swap, buy, and the rest of the U.CASH network across 30+ chains.