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Wrapped Bitcoin 市場情緒 — 看漲還是看跌?
什麼是 Wrapped Bitcoin?
Wrapped Bitcoin (WBTC) is an ERC-20 token that represents Bitcoin (BTC) on Ethereum and other smart contract networks at a 1:1 ratio. Each WBTC is backed by one BTC held in custody, with a network of merchants minting and burning WBTC against deposits and redemptions of underlying Bitcoin. WBTC was launched in January 2019 by a consortium led by BitGo, Kyber Network, and Ren, with the goal of bringing Bitcoin's liquidity into the rapidly growing Ethereum DeFi ecosystem. As of 2025, WBTC remains the largest tokenised Bitcoin product on Ethereum by market cap, with several billion dollars of BTC locked across custodians.
The wrapping process is operated by approved 'merchants' such as institutional desks and DeFi-native firms. To mint WBTC, a merchant sends BTC to the WBTC custodian (originally BitGo, with custody arrangements expanded in 2024 to include BiT Global, a joint venture involving BitGo, BiT Mining, and Justin Sun-affiliated entities). On confirmation of the BTC deposit, the WBTC DAO releases an equivalent amount of WBTC to the merchant, who then distributes it to end users via exchanges and DEXes. Redemption works in reverse: WBTC is burned and the underlying BTC is released. All mints and burns are visible on-chain, and the WBTC consortium publishes a real-time proof of reserve via the WBTC dashboard.
WBTC integrates with effectively the entire Ethereum DeFi stack. It is accepted as collateral on Aave, Maker (Sky), Morpho, Spark, and Compound; serves as a base trading pair on Uniswap, Curve, and Balancer; and underpins yield-bearing strategies on protocols such as Pendle, Yearn, and Convex. Holding WBTC instead of native BTC trades custodial trust (you trust the WBTC custodian to honour redemptions) for DeFi composability (you can lend, borrow, swap, and tokenise the position 24/7 on-chain).
The 2024 transition of WBTC custody arrangements to include BiT Global generated significant community debate, with some observers raising concerns about the involvement of Justin Sun-affiliated entities and prompting protocols including Sky and Coinbase to evaluate alternative wrapped Bitcoin products such as cbBTC (Coinbase Wrapped BTC, launched September 2024) and tBTC (Threshold's decentralised wrap). WBTC retains the largest market share by some distance, but the competitive landscape for tokenised Bitcoin on Ethereum is now meaningfully more diversified than it was before 2024.
主要功能: Wrapped Bitcoin
- 1:1 Bitcoin Backing: Every WBTC is backed by one BTC held by the WBTC consortium's custodian. The reserve is verifiable on-chain via Bitcoin block explorers and through the WBTC consortium's real-time proof-of-reserve dashboard.
- Deepest DeFi Integration on Ethereum: WBTC is the most widely accepted tokenised Bitcoin across Aave, Sky, Morpho, Spark, Compound, Uniswap, Curve, Balancer, and Pendle. No alternative wrapped Bitcoin matches its DeFi liquidity profile.
- Multi-Network Availability: WBTC is canonically issued on Ethereum and bridged to Polygon, Arbitrum, Optimism, Base, and other networks via canonical bridges, allowing users to deploy Bitcoin liquidity on Layer-2 networks with lower fees.
- Transparent Mint and Burn Flow: All WBTC mints and burns are visible on-chain. Approved merchants must publicly demonstrate BTC deposits to mint, and any holder can redeem WBTC for BTC at par through a merchant on demand.
- Battle-Tested Since 2019: WBTC has operated continuously since January 2019, processing billions of dollars of BTC through wrap and unwrap cycles without a custody loss or peg break larger than a fraction of a percent.
Wrapped Bitcoin 應用場景
- Bitcoin Collateral in DeFi: Deposit WBTC on Aave, Sky, Morpho, or Spark to borrow stablecoins or other crypto without selling your Bitcoin position. Liquidation thresholds are relatively conservative because WBTC is high-value collateral with deep liquidity.
- Yield on Bitcoin: Supply WBTC to Curve, Uniswap, or Balancer pools to earn trading fees, or use looping strategies on Pendle and Yearn to compound BTC-denominated yield without selling exposure.
- On-Chain Bitcoin Trading: DEX users trade WBTC against ETH, stablecoins, and other ERC-20 assets at any hour without needing a centralised exchange account. Aggregators such as 1inch, Matcha, and CoW Swap route WBTC orders across pools for best execution.
- Cross-Chain Bitcoin Liquidity: WBTC is bridged to Layer-2 networks like Arbitrum, Optimism, and Base, where DeFi fees are dramatically lower. Bitcoin-denominated yield strategies that would be uneconomic on Ethereum mainnet become viable on these networks.
- Treasury Management: DAOs and crypto treasuries hold WBTC instead of native BTC when they want their Bitcoin exposure to remain composable with the rest of their on-chain portfolio. Voting tools, multisigs, and accounting integrations are simpler when all assets live on Ethereum.
Wrapped Bitcoin 代幣經濟學
Peg
1 BTC per WBTC
Custodian
BitGo / BiT Global
Network
Ethereum + L2s
Standard
ERC-20
- 總供應量
- WBTC has no protocol-level cap independent of Bitcoin's. The total supply mirrors the BTC held by the WBTC custodian — currently several hundred thousand BTC, equivalent to billions of dollars at current prices.
- 流通量
- Every WBTC in circulation is backed by one BTC held by the WBTC consortium's custodian and visible via the WBTC proof-of-reserve dashboard. There is no pre-mine, founder allocation, or vesting.
- 用途
- WBTC functions as a payment, trading, and collateral asset on Ethereum. Holding WBTC does not confer governance rights — those flow through the separate WBTC DAO. The token is purely a Bitcoin-tracking instrument.
- 發行速率
- WBTC supply expands when merchants mint against BTC deposits and contracts when they burn against BTC redemptions. There is no inflationary emission curve.
如何購買 Wrapped Bitcoin
- 1
1. Create a Binance account
Sign up at binance.com or via the app and complete identity verification at the Intermediate level.
- 2
2. Fund your account
Deposit fiat via bank transfer or card, or transfer in USDT, USDC, or BTC.
- 3
3. Open a WBTC pair
Click 'Trade' → 'Spot' and search for WBTC. The most liquid pair is WBTC/BTC, which lets you swap native BTC for WBTC at near-1:1; WBTC/USDT and WBTC/USDC are also available.
- 4
4. Place your order
Use a market order for instant fill or a limit order at WBTC/BTC ≈ 1.0 to capture cheap liquidity. Confirm and execute.
- 5
5. Withdraw to an Ethereum wallet
Withdraw WBTC over Ethereum (ERC-20) or a supported Layer-2 such as Arbitrum or Base. Confirm the destination address is on the chosen network. WBTC sent to a BTC-only wallet will be lost — these are different chains.
Wrapped Bitcoin 歷史表現
Launch
Jan 2019
All-Time High
Tracks BTC ATH
Typical Peg
Within 0.2% of BTC
Custody Update
Aug 2024
BiT Global addition
WBTC has tracked Bitcoin's price closely since launch in January 2019, with deviations rarely exceeding 0.5% even during stressed market periods. Total WBTC supply has scaled with broader DeFi adoption to several hundred thousand BTC. The August 2024 custody update to include BiT Global was the most material governance event in WBTC's history and prompted the rise of competing wrapped Bitcoin products (cbBTC, tBTC) without dislodging WBTC's dominance.
常見問題
What is Wrapped Bitcoin and why does it exist?
Wrapped Bitcoin (WBTC) is an ERC-20 token on Ethereum that represents Bitcoin at a 1:1 ratio, backed by BTC held by a custodian. It exists because Bitcoin's native chain does not support smart contracts. Wrapping BTC into WBTC lets holders use their Bitcoin position as collateral on Aave, swap on Uniswap, supply to Curve pools, and otherwise participate in Ethereum DeFi without selling their BTC exposure.
Who custodies the underlying Bitcoin?
WBTC's underlying BTC is held by BitGo and, since 2024, by BiT Global — a joint venture involving BitGo, BiT Mining, and entities associated with Justin Sun. The custody arrangement and on-chain proof of reserve are published live on the WBTC consortium's dashboard. The consortium that mints and burns WBTC includes BitGo, Kyber Network, Ren, and approved merchants.
How does WBTC differ from cbBTC and tBTC?
All three are ERC-20 tokens representing Bitcoin at 1:1. WBTC is custodied by BitGo / BiT Global and is the largest by market cap. cbBTC (launched September 2024) is custodied by Coinbase and uses Coinbase's institutional infrastructure. tBTC is issued by the Threshold Network and uses a decentralised threshold signature scheme rather than a single custodian, with the trade-off of smaller liquidity and slightly higher trust assumptions on the threshold network operators.
Does WBTC track Bitcoin's price exactly?
WBTC trades within fractions of a percent of BTC's spot price, with the peg enforced by arbitrageurs who can mint WBTC from BTC at par or redeem WBTC for BTC at par. Brief deviations occur during periods of stressed redemption demand or high Ethereum gas fees but historically close within hours.
Why did the WBTC custody change in 2024 cause controversy?
In August 2024 the WBTC consortium announced a shift in custody arrangements to include BiT Global, a joint venture involving BitGo, BiT Mining, and entities associated with Justin Sun. Some observers raised concerns about the involvement of Sun-related entities and the implications for the trust assumptions underlying WBTC. Several DeFi protocols including Sky paused WBTC integrations or evaluated alternatives such as cbBTC and tBTC. WBTC redemptions remained operational throughout.
Can I use WBTC as collateral on Aave or Maker?
Yes — WBTC has been one of the largest collateral assets on Aave, Sky (formerly Maker), Morpho, Spark, and Compound for years. After the 2024 custody changes, some protocols revised their WBTC risk parameters or reduced reliance on WBTC, but it remains broadly accepted with conservative loan-to-value ratios.
Is there a network fee to wrap and unwrap?
Minting and burning WBTC requires Bitcoin and Ethereum network fees plus any service fee charged by the merchant. Most retail users do not wrap BTC themselves; they buy WBTC directly on a centralised exchange or a DEX, which is dramatically cheaper for amounts under several hundred thousand dollars.
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