crvUSD wallet

What is crvUSD (CRVUSD)?

crvUSD is the dollar stablecoin of the Curve protocol. It is not backed by bank deposits: every unit is minted when someone locks crypto collateral such as ETH, staked ETH derivatives or wrapped bitcoin in a Curve mint market and borrows crvUSD against it. When the borrower repays, the tokens are burned. What makes it different from other collateral-backed stablecoins is the way liquidations work: instead of selling a borrower's collateral in one shot when the price drops, the protocol's LLAMMA mechanism gradually converts collateral into crvUSD as the price falls and back into collateral as it recovers. The peg is kept by PegKeeper contracts that mint or absorb crvUSD in its pools with other dollar stablecoins depending on which side of one dollar it trades.

For a holder, none of that machinery needs attention. crvUSD is a plain ERC-20 with 18 decimals. It does not rebase and does not grow in your wallet; interest is charged to borrowers as debt, not paid to holders. If you see a token called scrvUSD (Savings crvUSD), that is a separate vault token from the Curve savings contract and a different asset with a different balance; do not confuse the two when adding tokens or checking a transfer.

The home of crvUSD is Ethereum, where transfers are paid in ETH. On the other chains it is a bridged version, and each one pays fees in that chain's own gas coin, so you need a little ETH, BNB, POL, xDAI or similar next to the stablecoin to move it. The same wallet address exists on all of these EVM chains, which is the usual place people trip: a transfer sent on the wrong chain lands at the right address but in the wrong place.

Supported networks in Tangem (7): Ethereum, Base, Arbitrum One, Optimism, BNB Smart Chain, Polygon POS, Gnosis Chain.

The Tangem app treats each of these as a separate crvUSD balance and names the network a transfer will leave on before you tap the card to sign, which gives you a moment to compare it with what the recipient asked for. For a stablecoin that moves across several chains, that per-network view is the main thing you want from a wallet, and it is why crvUSD sits comfortably on a Tangem card.