Crypto.com Wrapped BTC wallet

What is Crypto.com Wrapped BTC (CDCBTC)?

CDCBTC is a receipt for bitcoin rather than bitcoin. Each token is issued against BTC held in Crypto.com's custody at one to one, and it lives on Cronos so that bitcoin exposure can be used inside smart contracts, which the bitcoin chain itself will not do. Tokens appear when a user withdraws native BTC from the platform onto a supported chain, and they are unwound by sending CDCBTC back the other way.

That shape has two consequences for whoever holds it. The redemption path runs through an account on the issuing platform, so possession of the token and the ability to convert it back into BTC are not automatically the same thing. And on chain, CDCBTC is an ordinary Cronos token: CRO covers the gas, the address is an EVM address, and a wallet needs the contract in its token list before the balance shows up at all. It also sits among several other wrapped bitcoins, each with its own issuer and its own backing arrangement, and none of them are interchangeable with this one even where the underlying asset is the same.

A wrapped-bitcoin position is usually held for long stretches and touched rarely, and that is the situation where a key created inside a card's secure element, never exported and never typed anywhere, is easier to live with than a phrase in a drawer. Tangem generates it on the card; a second identical card, set up alongside, restores the same wallet if the first is lost, and a seed phrase remains an option rather than a requirement. Supported networks in Tangem (1): Cronos. The custodian's cold storage protects the bitcoin; the card protects the claim on it.