Гаманець для cWBTC

What is cWBTC (CWBTC)?

cWBTC represents WBTC deposited into a Compound v2 market, which makes it a receipt for a wrapper on top of a wrapper: bitcoin held by WBTC's custodians, tokenised as WBTC on Ethereum, then deposited into Compound and represented by cWBTC.

The detail that matters most here is that there are two of them. When the WBTC token contract was changed, Compound deployed a second market, commonly labelled cWBTC2, and the original cWBTC market was left behind. Both tokens exist on Ethereum, both are called cWBTC in many interfaces, and they are not interchangeable: a balance in the legacy market has to be redeemed through the legacy contract. If a wallet or an explorer shows you cWBTC with a price that looks wrong or with no price at all, the first thing to check is which of the two contracts your balance actually belongs to.

Like every cToken, it uses 8 decimals, which happens to match bitcoin, and the quantity in your wallet does not change over time. The claim on WBTC behind it grows through the market's exchange rate instead.

Holders who went through the cWBTC to cWBTC2 transition kept whichever address they started from, and that is the part Tangem makes durable: the key is generated on the card and cannot be extracted, so the address survives any future contract change on the token's side. Contracts get replaced; the address you hold them at does not have to be.

Supported networks in Tangem (1): Ethereum.