Qubit wallet

What is Qubit (QBT)?

Qubit was a lending market on BNB Smart Chain, built by Mound, the team also known for PancakeBunny. Users supplied assets to pools and borrowed against them, and QBT was the protocol token attached to that market: it carried governance weight in the protocol.

The part of its history that matters to anyone holding QBT is the bridge. Qubit ran qBridge to move assets in from other chains, and a flaw in it let an attacker register collateral that had never actually been deposited, then borrow against it until the lending pools were emptied. The protocol did not come back from that at any meaningful scale, and the token has to be read in that light. Nothing about holding it is technically broken, but the market it was minted for is not the market it was designed around.

Mechanically QBT is unremarkable and that is a virtue: an ordinary BEP-20 balance sitting at your address, transferable like any other, with BNB covering gas. No rebase, no wrapper, no token account, nothing to maintain. The catch is the opposite of complexity: a token like this can sit untouched for years, so the question stops being how to transact and becomes how to still have access later.

Supported networks in Tangem (1): BNB Smart Chain. Tangem generates the private key inside the card's secure element, where it stays; a second identical card, kept somewhere else, restores the same address if the first is lost, and a seed phrase is yours to add only if you want one. Dormant holdings are exactly what that arrangement is built to survive.