Optim OADA wallet

What is Optim OADA (OADA)?

OADA is Optim's ADA derivative on Cardano: ADA goes into the system, OADA comes out, and the token is designed to track ADA roughly one to one while the deposited ADA is put to work by the protocol's strategies. The design splits the roles deliberately. Plain OADA is the stable, transferable form and its balance does not drift; the accrual side of the system lives in a separate staked form, so a wallet holding OADA holds the same number of units it received, whatever the protocol is doing underneath.

On Cardano that token is a native asset, not a smart contract balance. It does not have a contract of its own that tracks who owns what; it rides inside UTxOs alongside ADA, carried by the ledger itself. This has a concrete consequence people meet the first time they move funds: every UTxO holding a native asset must also carry a minimum amount of ADA, so it is impossible to hold OADA in an address with zero ADA, and that locked minimum returns only when the tokens leave. Fees, of course, are in ADA too.

A Tangem wallet keeps ADA and the native assets riding with it in the same account, so the coin that covers both the fee and the minimum is always sitting where the transaction needs it, and signing is a tap of the card against the phone. When an asset structurally cannot exist without its base coin, keeping the two together in one wallet is less a preference than a requirement, and Tangem handles it in one place.

Supported networks in Tangem (1): Cardano.