Ultra wallet

What is Ultra (UOS)?

Behind UOS sits a PC game distribution platform: storefronts anyone can operate, games and in-game items issued as transferable assets, and developer tooling around them. UOS is the unit the platform runs on, used to pay for content and by developers for platform services, with fiat payments converted behind the scenes.

The detail that decides where you keep it is that UOS exists in two forms. Ultra runs its own network, derived from the EOSIO line, where accounts are human readable names rather than hex addresses and UOS is the native coin. Separately there is an ERC-20 UOS on Ethereum, and the two are connected by a bridge. They are the same asset in name and in value, but not interchangeable in practice: tokens sitting on Ethereum cannot be spent inside the Ultra client until they are moved across, and a native account cannot receive an Ethereum transfer. Sending ERC-20 UOS to something that looks like an Ultra account name, or the reverse, simply will not work.

A wallet therefore has to be explicit about which side of that divide a balance is on. Tangem lists holdings per network and names the network a transaction is going out on at the moment you present the card to sign, which is the check to make before a bridge transfer rather than after it. Fees on the Ethereum side are paid in ETH from the same wallet. For an asset that lives under one name in two different places, that separation is the useful thing.

Supported networks in Tangem (1): Ethereum.