Sui (SUI) is a layer-1 blockchain with an object-centric data model and Mysticeti consensus, settling transactions with sub-second finality. On U.CASH, SUI runs on the partner rails: buy it with card or bank and sell it back to fiat through the on-ramp network, and swap it against BTC, ETH, USDT and 1,500+ assets through the instant-exchange network, always delivered to your own wallet. SUI is not a U.CASH wallet or checkout network.
Straight into the app: Swap SUI · Buy SUI · Sell SUI · Get UCASH with SUI
Mysticeti delegated proof-of-stake. Settlement on U.CASH is non-custodial: every payment moves on-chain, direct to a wallet you control. Confirmation policy for Sui: Near-instant single-slot finality.
A single U Account works across accept, swap, and buy. Pick where to start.
Receive, hold, and settle SUI your way.
Proof-of-stake layer 1; served via partner rails.
The largest US-dollar stablecoin, live on Ethereum, Tron, and BNB Chain.
The original proof-of-work blockchain and largest cryptocurrency.
The leading smart-contract blockchain and home of ERC-20.
Getting started takes a wallet and an address. The wallet needs to hold Sui and a little SUI 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.
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 SUI, settling with about 1 s finality blocks on Mysticeti delegated proof-of-stake, shown per leg before signature. Settlement runs on-chain to your chosen address at this asset's policy, Near-instant single-slot finality, 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 an instant integration, 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.