Bitcoin holders seeking cash do not always need to sell their BTC. They can pledge it as collateral, borrow funds and remain exposed to Bitcoin’s price movements. The trade-off is that this financing structure introduces additional custodial, technical and market risks.
Many lending protocols operate on Ethereum, which maintains its own record of ownership. BTC held on the Bitcoin network cannot simply be transferred into an Ethereum-based smart contract as collateral. To access these markets, Bitcoin owners generally need a representation of their BTC on another blockchain.
One common solution is a custodial wrapper. A custodian safeguards the Bitcoin and issues a token on a separate network. The original BTC remains in custody, while the new token represents it within the destination blockchain’s ecosystem.
This arrangement can provide financing without a spot sale, but it expands the borrower’s dependencies. The holder must trust the custodian to protect and release the BTC, the wrapper to follow its redemption rules, the token to maintain its value and the lending protocol to operate as intended. A failure at any point could affect access to the underlying Bitcoin.
Coinbase’s cbBTC, Circle’s cirBTC and Wrapped Bitcoin (WBTC) are competing implementations of this model. Circle’s Sept. 4 explanation of cirBTC outlines its approach to a market already served by cbBTC and the established WBTC token. Each product follows the same basic proposition: BTC is held in custody and a transferable token is issued against it on another network.
The competition now centers on how useful each token is, how easily it can be redeemed and how dependable the overall arrangement proves to be.
A receipt that can move
Consider a warehouse receipt that can change hands while the stored goods remain in place. Custodial Bitcoin wrappers operate on a similar principle. The token can be transferred between users while the custodian retains the supporting BTC. The product’s terms determine who may convert the token into the underlying asset.
The process typically begins with a BTC deposit. After the transaction is confirmed, the provider mints a corresponding token on another network. Redemption reverses the process: the token is removed from circulation, or burned, and the Bitcoin is released according to the provider’s procedures. BitGo says approved merchants facilitate WBTC conversions with the custodian and charge a fee.
A retail buyer can also purchase an existing wrapped token from another user. That transaction transfers the token without requiring a new BTC deposit, and wrapping has not created a second Bitcoin on the Bitcoin network. It has merely created a representation of the asset on another chain.
Each wrapper is designed to track one BTC, so wrapping does not shield the holder from a decline in Bitcoin’s market price. The holder retains exposure to the same gains and losses, even though the transferable asset is now a token on a different network.
Redemption can help keep the token’s value close to the price of its backing. If a wrapped token trades below the value of the BTC it represents, an eligible trader can buy it and redeem it for Bitcoin, profiting after costs. That demand can narrow the discount, but eligibility limits or slow redemption procedures can weaken the mechanism. Knowing that Bitcoin exists in reserves is not the same as being able to obtain it promptly.
Once a lending protocol accepts the token, its smart contract can use wrapped Bitcoin as collateral and dispense dollar-linked stablecoins. A smart contract is a blockchain program that automatically executes predefined rules. The borrower gains access to financing while retaining exposure to Bitcoin’s price, but also assumes a debt that must be repaid.
Borrowers generally must pledge more value than they receive because Bitcoin can fall while the loan remains outstanding. If the collateral value drops below the protocol’s required threshold, the position may be liquidated to repay the debt.
That is the central catch. A structure created to preserve Bitcoin exposure can ultimately force the borrower to give up part of that exposure without intentionally selling.
During liquidation, another participant can repay some or all of the debt and receive collateral in return, with an incentive to perform the transaction.
Wrapping itself does not generate interest. A holder seeking income must take another step, such as supplying the token to a lending market. Any return then depends on that activity and introduces additional borrower, protocol and smart-contract risks.
One backing asset, different paths to redemption
A Bitcoin-backed token has limited value if a borrower’s chosen lending protocol will not accept it. Conversely, a widely accepted token may be difficult for a particular holder to exchange for BTC. Products with similar reserve claims can therefore differ substantially in network support, access, cost and redemption procedures.
WBTC’s merchant network connects exchanges and institutions with its minting and redemption process. Most individual users obtain the token through exchanges. Lending applications that already accept WBTC give those users a route to borrow against it, while merchants provide access to the Bitcoin held in custody. That established infrastructure can give WBTC an advantage over newer wrappers.
Coinbase incorporates conversion into its exchange account. Eligible customers can choose a supported network when withdrawing from a Bitcoin balance and receive cbBTC on that network. Sending cbBTC back through a supported Coinbase deposit credits the account with BTC. Coinbase’s instructions include geographic restrictions, but qualifying customers can complete much of the process through familiar transfer flows.
Circle’s cirBTC offering is designed primarily for institutions, including trading firms and lending protocols. It integrates with Circle’s existing services and USDC. Circle says the underlying Bitcoin is held separately from corporate assets, publishes reserve addresses and uses Chainlink to make backing information available to applications that use the token.
For a borrower, these differences determine where Bitcoin can actually be used as collateral and how readily the wrapped representation can be converted back into BTC.
The commercial strategy is straightforward: make the wrapper convenient for customers already using the provider’s services, then persuade external applications to accept it. A familiar brand and transparent reserves help, but adoption also depends on liquidity, operational reliability and effective risk management.
Lending protocols must decide how much credit to extend against each asset. They also need a market in which collateral can be sold if a borrower defaults. Liquidity measures how easily that sale can occur without causing a major price decline. A wrapper may be fully backed yet still be unattractive to lenders if too few buyers operate in the relevant market.
Actively traded wrappers therefore have an advantage when seeking acceptance as collateral. More lending markets can attract additional holders and traders, reinforcing the token’s usefulness. New entrants face a circular challenge: they must persuade lenders to accept a token before users adopt it, while also convincing customers to hold a token that fewer lenders accept.
WBTC explicitly allows merchants to earn conversion fees. For providers more broadly, a useful wrapper can increase activity across their services, although the financial return depends on the business model. Unlike some dollar stablecoins that hold interest-bearing Treasury securities, Bitcoin held in reserve does not automatically produce income. Any commercial opportunity must come from conversion, token-based activity or related services.
Controlling the token is not the same as controlling the Bitcoin
Reviewing disclosed reserves is a sensible starting point for users. Coinbase publishes a cbBTC reserve dashboard that allows holders to compare reported Bitcoin holdings with the number of tokens outstanding.
Visible reserves do not establish what happens if the provider fails or guarantee that every holder can redeem immediately. The product terms identify who has redemption rights, while the provider’s operations must support timely delivery. The existence of Bitcoin in custody is not proof that a token holder can obtain it.
The distinction can be easy to miss when the token sits in a personal wallet. Its owner controls the private keys needed to transfer the wrapper, but the custodian controls the keys to the underlying BTC. Keeping the token directly still leaves the backing dependent on another institution.
Using the token as loan collateral adds reliance on the software managing the position. The protocol must execute its rules correctly and obtain reliable price data to value the collateral. Users could suffer losses from a software defect, faulty oracle or governance failure even if every promised Bitcoin remains safely in custody.
For an owner who simply wanted cash without selling Bitcoin, wrapping creates a clear trade-off. The asset becomes usable in applications that could not otherwise accept it, in exchange for fees and dependence on additional institutions and pieces of software. Whether the arrangement is worthwhile depends on the lending terms, available markets and risks the owner is prepared to accept.
This explains why several businesses can compete to represent the same underlying asset. A wrapper earns adoption by opening access to a financial service the holder wants and by supporting dependable redemption.
The arrangement may begin with Bitcoin, but its ultimate value depends on whether the holder can recover that Bitcoin when it matters.
