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Wrapped Bitcoin: How BTC Gains Access to Ethereum DeFi

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Summary

Wrapped Bitcoin (WBTC) is an Ethereum ERC-20 token intended to represent Bitcoin at a one-to-one ratio. The document explains that this representation lets BTC holders use Ethereum smart contracts, wallets, and decentralized finance services, including lending, borrowing, trading, staking, and liquidity provision. It describes the project’s merchant and custodian model: a merchant requests WBTC from a custodian, which mints tokens against BTC reserves; redemption burns WBTC and returns BTC. The article also outlines centralized, trustless, and synthetic approaches to wrapping Bitcoin.

The main trade-off is broader blockchain utility in exchange for reliance on intermediaries and Ethereum’s security. The document notes that only merchants can redeem WBTC for BTC and that the token is more centralized than native Bitcoin. It offers a general description rather than an evaluation of reserve verification, operational risks, fees, or performance, so it does not establish that WBTC is always faster or safer in practice.

Key ideas

  • WBTC represents Bitcoin as an ERC-20 token so it can interact with Ethereum applications.
  • The described custodial model mints WBTC against BTC and burns WBTC when BTC is redeemed.
  • Users can gain access to Ethereum DeFi functions such as lending, borrowing, trading, and liquidity provision.
  • WBTC introduces custodian and network risks that do not apply in the same way to native BTC.
  • The article outlines centralized, trustless, and synthetic approaches to representing Bitcoin on other networks.

Tags

CryptoDeFiSpot marketsRisk management

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.