Short answer: Wrapped Bitcoin (wBTC) is an Ethereum-based token that's backed one-to-one by Bitcoin. One wBTC equals one BTC, always. It exists because Bitcoin doesn't natively run on Ethereum, and almost all of crypto's lending, trading, and yield infrastructure lives on Ethereum and its L2s. wBTC is how Bitcoin gets to use that infrastructure earn yield, post as collateral, swap, and participate in DeFi without leaving the Bitcoin you already own.
If you've ever wondered why the BTC sitting in your wallet can't be deposited into Aave, lent on Compound, or used as margin on a DEX, the answer is wBTC. This post explains what it actually is, how the wrapping process works, what you can do with it, and the honest trust trade-offs most explainers gloss over.
The problem wBTC solves
Bitcoin was designed to do one thing extremely well: be censorship-resistant digital money on its own chain. It does that better than anything else. It's also why Bitcoin is uniquely bad at participating in the rest of the crypto economy.
Most of the lending markets, decentralized exchanges, yield strategies, and stablecoin systems built since 2018 live on Ethereum or an Ethereum-compatible L2 (Arbitrum, Base, Optimism, Polygon). Bitcoin can't talk to those systems natively. The two chains use different virtual machines, different transaction models, and different scripting languages. There is no native way for a Bitcoin holder to deposit BTC into an Ethereum smart contract.
This left BTC holders with a real problem. They held the largest, most liquid asset in crypto and it couldn't earn yield, couldn't collateralize a loan, couldn't be used as perps margin, couldn't be paired in a liquidity pool. The choices were either to sell the BTC for ETH (and lose Bitcoin exposure), or hold it idle.
wBTC was the answer.
What wBTC is, precisely
wBTC is an ERC-20 token on Ethereum. It was launched in January 2019, and the design is straightforward: for every wBTC token in circulation, exactly one BTC is held in reserve by a custodian. The peg is enforced by the reserves themselves not by an algorithm, not by a market-making mechanism, but by the fact that you can always (in principle) redeem one wBTC for one BTC.
That ERC-20 status is what makes the whole system useful. Because wBTC is just an Ethereum token, every piece of Ethereum infrastructure that supports ERC-20 tokens supports wBTC. Aave, Compound, Uniswap, Curve, Maker, Lido, and every yield aggregator built on top of them treats wBTC like any other deposit asset. The Bitcoin under the hood is invisible to the contracts.
In 2026, wBTC remains the largest "Bitcoin on Ethereum" token by a substantial margin, though it has competition from newer alternatives covered below.
How wBTC actually works
The wrapping process involves three roles. Understanding them is the difference between treating wBTC as a black box and understanding what you're actually trusting.
The three roles: custodians, merchants, and the DAO
Custodians hold the actual Bitcoin in reserve. When wBTC is minted, the equivalent BTC is sent to and held by a custodian. When wBTC is burned (redeemed), the custodian releases the BTC. Historically the primary custodian was BitGo; the custody arrangement has evolved since launch and is now administered through a network model.
Merchants are the user-facing intermediaries. If you want to mint wBTC, you don't interact directly with the custodian you go through a merchant (an authorized institution or service). The merchant takes your BTC, instructs the custodian to mint the corresponding wBTC, and delivers the wBTC to you.
The DAO governs the system. It holds multi-signature keys to the smart contracts and votes on changes adding or removing merchants, modifying contract parameters, and so on.
The mint and burn flow
Minting wBTC, end-to-end:
- A user sends BTC to a merchant.
- The merchant sends the BTC to a custodian, who holds it in reserve.
- The custodian (via the smart contract) mints the equivalent wBTC.
- The wBTC is sent to the user's Ethereum wallet.
The user can now use that wBTC anywhere on Ethereum that accepts ERC-20 tokens.
Burning (redemption) reverses the flow:
- The user sends wBTC to the merchant.
- The merchant submits a burn instruction, which destroys the wBTC.
- The custodian releases the equivalent BTC back to the user.
In practice, most retail users never mint or burn wBTC themselves. They buy or sell it on an exchange or DEX where someone else has already done the wrapping.
What you can actually do with wBTC
The whole point of wBTC is the things it unlocks. Five categories are worth knowing.
Lending. Deposit wBTC into Aave or Compound and earn interest from borrowers who want BTC exposure or short positions. Rates are typically modest (1-4% on the base layer) because BTC borrow demand is generally lower than stablecoin borrow demand.
Borrowing against your Bitcoin. Deposit wBTC as collateral on a lending protocol and borrow stablecoins against it. This is one of the most common reasons to wrap BTC you get liquidity from your Bitcoin position without selling and triggering a taxable event.
Liquidity provision. Pair wBTC with other tokens (most commonly ETH or stablecoins) in a liquidity pool on Uniswap or Curve, and earn a share of swap fees. Carries impermanent loss risk on volatile pairs.
Perps and futures collateral. Use wBTC as margin on a derivatives venue. This lets you express leveraged crypto views without converting your BTC to stablecoins first.
Managed yield strategies. Self-custodial neofinance apps and yield aggregators route wBTC into combinations of the above and pay you a single blended rate. Tria's Earn product, for example, runs wBTC on Ethereum at a base APY with tier-based boosts on top (up to 7% APY at the time of writing).
The common thread: every one of these is something native Bitcoin couldn't do without wrapping.
The trust trade-off most people miss
This is the section most "what is wBTC" articles either skip or hand-wave.
wBTC is not a fully trustless asset. The peg between wBTC and BTC is held in place by real Bitcoin sitting in a custodian's wallet. If that custody breaks through hack, mismanagement, regulatory action, or any other failure wBTC could trade below BTC, or in a worst case, become unredeemable.
This isn't theoretical. In late 2024 and through 2025, the wBTC ecosystem went through a meaningful custody transition that generated public concern about the operating structure. Holders had time to reassess; the market continued to support wBTC at the peg; new alternatives gained share. But the episode was a useful reminder: when you hold wBTC, you are trusting the custody arrangement in addition to trusting Bitcoin and Ethereum.
The honest framing: wBTC's use on Ethereum is non-custodial (you hold the ERC-20 in your own wallet, sign your own transactions, interact with smart contracts you can verify). But the backing depends on a third-party custody system. Those are two different layers of trust, and serious wBTC users think about both.
wBTC vs alternatives in 2026
wBTC's dominance in "Bitcoin on Ethereum" is no longer total. By 2026, several alternatives have meaningful adoption:
- cbBTC (Coinbase) Coinbase-custodied, fast-growing, used heavily in Coinbase-adjacent DeFi.
- tBTC (Threshold Network) designed to be more decentralized, using a threshold cryptography multi-party signing model instead of a single custodian.
- LBTC (Lombard) staked Bitcoin product with its own restaking story.
- iBTC, M-BTC, and others smaller players addressing specific ecosystems.
The choice between them is a choice about which trust assumptions you're comfortable with custodian-based (wBTC, cbBTC), decentralized signing (tBTC), or yield-augmented (LBTC). There is no objectively best wrapped-BTC token; the right answer depends on what you're optimizing for and where you intend to use it.
If you're using a yield product or DeFi protocol, the practical answer is often: use whichever version your platform supports. Tria Earn's wBTC strategy uses standard wBTC on Ethereum because that's where the deepest lending and routing liquidity sits.
Where Tria fits
Tria is a self-custodial neofinance app. Inside Tria, you can hold wBTC in a wallet you control and the same balance can flow into Tria's Earn product, which runs an on-chain strategy on wBTC and pays a base APY plus a tier-based boost (up to 7% as of writing). Your keys stay yours throughout; the wBTC never leaves your custody until you choose to commit it to a strategy.
Download Tria to hold wBTC self-custodially and put it to work.
Frequently asked questions
Is wBTC the same as Bitcoin?
No. wBTC is an Ethereum ERC-20 token backed one-to-one by Bitcoin held in reserve by a custodian. It tracks Bitcoin's price almost exactly because the peg is enforced by the underlying reserves, but it is not Bitcoin itself it's a token representing a claim on Bitcoin, usable on Ethereum.
Can I convert wBTC back to Bitcoin?
Yes. The process is called burning or redemption. You send wBTC to an authorized merchant, who instructs the custodian to release the corresponding BTC to your Bitcoin address and burn the wBTC. Most retail users instead simply sell wBTC for native BTC on an exchange, which is faster and cheaper for typical amounts.
Is wBTC safe to use?
It's as safe as the custody arrangement that backs it. The on-chain side your wBTC sitting in your Ethereum wallet, your interactions with smart contracts is non-custodial. The backing side depends on the custodian holding the underlying Bitcoin honestly and securely. If the custody arrangement fails, wBTC could lose its peg or become unredeemable. This is the central trust trade-off and the main reason alternatives like tBTC, cbBTC, and LBTC exist.
Why not just use Bitcoin directly?
Because Bitcoin can't run smart contracts the way Ethereum can. Lending markets, DEXs, perps venues, liquidity pools, and yield aggregators are built as Ethereum smart contracts that work with ERC-20 tokens. Native Bitcoin can't interact with any of them. wBTC is the bridge that lets Bitcoin holders use that infrastructure without selling their BTC.
What's the difference between wBTC and cbBTC?
Both are Ethereum tokens backed one-to-one by Bitcoin held in reserve. The difference is the custodian wBTC's custody arrangement is administered through a network of partners; cbBTC is custodied by Coinbase. Each carries the trust profile of its custodian. For users who already trust Coinbase, cbBTC may feel more familiar; for users who prefer the older, more deeply integrated option across the broadest range of DeFi protocols, wBTC remains the default.
