sUSD yVault wallet

What is sUSD yVault (YVSUSD)?

yvSUSD is a Yearn vault share, and understanding it means splitting it in two. Underneath is sUSD, the dollar-denominated synthetic issued by the Synthetix protocol, which is a stablecoin only in the sense that the protocol backs it with collateral and its own mechanics rather than with a bank balance. Above that is the vault: sUSD deposited into it is put to work by a strategy, and the depositor holds yvSUSD as the claim on the vault's total holdings.

Vault shares behave in a way that catches newcomers. The share count in the wallet never changes on its own. What changes is price per share, the vault's internal ratio of sUSD to shares, so the same yvSUSD number redeems for progressively more sUSD. Any wallet that lists it as a flat token count is telling you only half the story.

Things worth knowing as a holder

• Exiting returns sUSD, not USDC or dollars, so a second step is needed to reach something ordinary.
• Yearn has run several generations of vaults, and an old share token can outlive the strategy it was written for. Check which vault contract your balance belongs to before assuming it is the live one.
• Supported networks in Tangem (1): Ethereum. Moving it costs ETH.

A vault share is the kind of thing you open once and touch years later. Tangem generates its private keys on the card and keeps them there, with a second identical card as the backup, and a seed phrase only if you decide you want one. For a claim that has to still be reachable long after you stopped thinking about it, that kind of key custody is the point.