Wrapped Avalanche (Universal) wallet

What is Wrapped Avalanche (Universal) (UAVAX)?

The awkward thing about a wrapped AVAX on another chain is that AVAX already looks like an EVM asset. On Avalanche it circulates on the C-Chain, with familiar looking addresses, and there is a wrapped ERC-20 form of it there too. uAVAX is none of those: it is a separate token on a different EVM network, issued against AVAX held in reserve, built so an AVAX position can be used in applications that do not run on Avalanche.

That overlap is the real hazard. Because EVM addresses share the same format everywhere, a uAVAX transfer aimed at an address that only exists on Avalanche will be accepted by the network you are sending on and simply land somewhere nobody is watching. Anyone quoting you a deposit address for AVAX almost certainly means the Avalanche network, and this token does not reach it. Going that way means redeeming for the underlying coin instead.

Tangem is reasonably direct about this part: each network has its own balance rather than a pooled one, and the send screen states which chain the transaction leaves on before the card signs. No wallet can know which chain a recipient had in mind, so that line on screen is there for you to check against what you were told, and checking it before signing is worth the two seconds.

Avalanche itself is a multi chain design, with separate chains handling assets, contracts and validation. Worth remembering that uAVAX touches none of that machinery; it tracks the coin's value and nothing else. Supported networks in Tangem (1): Base.