XLink Bridged BTC wallet

What is XLink Bridged BTC (ABTC)?

aBTC is a bridged representation of bitcoin issued by the XLink bridge, part of the Brotocol stack built around moving BTC into the chains that surround it. Bitcoin itself has no way to run this kind of contract logic, so the pattern is the usual one: BTC is locked on the bridge's side and a matching token is minted on the destination chain, where DeFi applications can use it as an ordinary balance.

The consequence is worth stating plainly. aBTC is a claim, and its value rests on the bridge honouring redemptions - it is not bitcoin held in your own custody. Getting BTC back means going through the bridge in the other direction.

The same ticker also appears on several of the Bitcoin-adjacent chains this bridge serves, and other projects issue their own BTC representations with names that look nearly identical. Two tokens both called wrapped or bridged BTC on two different chains are not interchangeable, and neither is aBTC on one chain with aBTC on another.

That is where per-network bookkeeping earns its keep. Tangem keeps a separate balance for each chain and names the network on the transfer screen before the card signs, so you can confirm you are spending the balance you meant to - checking the destination against what the recipient expects is still your job, not the wallet's. Supported networks in Tangem (1): Core. Fees are paid in the host chain's own gas coin, so keep some of it alongside.