eUSD wallet

What is eUSD (EUSD)?

The first thing to sort out with eUSD is which eUSD you have. The name and the ticker have been used by more than one unrelated project, each with its own contract on Ethereum and its own collateral design, and they are not interchangeable in any way: a wallet, an explorer or a price page can show the label eUSD while pointing at a completely different token. Identify yours by the contract your tokens actually arrived on, not by the three letters.

What holds across these designs is the shape of the thing. eUSD is an ERC-20 referenced to the US dollar and issued against collateral locked in a protocol rather than against euros or dollars in a bank, so its stability depends on that protocol's collateral and redemption rules staying intact. Transfers are ordinary Ethereum transactions and are paid for in ETH, which has to be sitting in the same wallet. Some tokens of this family also adjust holder balances through the contract rather than through transfers you make, so a number that changes while the wallet is closed is not necessarily an error.

Supported networks in Tangem (1): Ethereum.

A dollar-referenced token is usually something you set aside and leave alone, which makes the key, not the interface, the part that has to survive. Tangem's key is generated inside the card and stays there, a duplicate card put somewhere separate is the whole backup procedure, and there is no phrase on paper to lose unless you decide you want one. Storage that can sit untouched for years without maintenance suits a balance meant to do nothing in particular.