USDS wallet

What is USDS (USDS)?

USDS is the dollar stablecoin of Sky, the protocol that grew out of MakerDAO. It is the successor to DAI rather than a replacement for it: the two coexist, and either can be swapped for the other one-to-one through the protocol's own converter, so a holder is never stuck on the older token. Its backing is not a bank account but the collateral locked in Sky's vaults, and the peg to the dollar is kept by the protocol's mechanisms, which is why it is usually described as decentralized rather than fiat-backed.

What matters for holding it: USDS itself does not change balance on its own. The interest-bearing version is a separate token, sUSDS, a vault share whose exchange rate against USDS moves rather than the number in your wallet, so converting between the two is a deliberate transaction, not something that happens in the background. Likewise, supplying USDS to the protocol for SKY governance tokens is a separate protocol position, not a property of the coin sitting at your address.

One ticker, several chains

The home of USDS is Ethereum, where it is a standard ERC-20 paid for in ETH gas. Copies on Base and Arbitrum are bridged through Sky's own bridging layer, and the Solana version is an SPL token that needs a SOL balance for fees and a token account. All of them carry the same USDS ticker, so the thing to check before sending is which chain the recipient actually expects.

Supported networks in Tangem (4): Arbitrum One, Base, Ethereum, Solana. The app keeps each chain's USDS as its own balance and names the network on which a transfer will go out, so the check happens on your screen before the card signs. For a stablecoin that lives in several places under one name, that per-network clarity is the main reason to keep it here.