What is Wrapped Bitcoin?

Wrapped Bitcoin (WBTC) is a tokenized version of Bitcoin (BTC) that runs on the Ethereum blockchain. It adheres to the ERC-20 standard, the most widely used protocol for issuing tokens on Ethereum. The primary purpose of WBTC is to bring Bitcoin's liquidity to the Ethereum ecosystem, allowing BTC holders to participate in decentralized finance (DeFi) applications without needing to sell their Bitcoin.

Understanding WBTC's Value

Wrapped Bitcoin (WBTC) is designed to directly correspond with Bitcoin, maintaining a 1:1 relationship. This means that for every WBTC in circulation, there is one Bitcoin backing it. While this concept mirrors the principle behind stablecoins, which are typically pegged to stable fiat currencies, Bitcoin itself isn't always stable. The key takeaway, however, is clear and straightforward: 1 WBTC always equals 1 BTC, ensuring a consistent and direct link between the two.

Why Wrap a Bitcoin Anyway?

Bitcoin has a vast amount of liquidity. However, being on its own blockchain, it cannot directly interact with the burgeoning DeFi sector on Ethereum. WBTC was created to solve this issue by wrapping Bitcoin into an ERC-20 token, thus unlocking new opportunities for BTC holders to lend, borrow, or trade their assets in Ethereum's DeFi applications. The benefits extend beyond Bitcoin holders, WBTC contributes significant liquidity to Ethereum's DeFi platforms, making them more efficient and reducing slippage in trading. Wrapped Bitcoin has led to token wrapping across chains, and now many different types of tokens are wrapped.

How Do You Wrap a Token?

The process of wrapping Bitcoin into WBTC is facilitated by a consortium of organizations, including custodians, merchants, and users. Here's a simplified overview:

  1. Initiation: A user requests to convert their BTC to WBTC through a merchant.
  2. Verification: The merchant verifies the user's request and initiates the wrapping process with a custodian.
  3. Locking BTC: The custodian receives BTC and locks it in reserve.
  4. Minting WBTC: An equivalent amount of WBTC is minted on the Ethereum blockchain and sent to the user's Ethereum wallet.
  5. Using WBTC: Users can now utilize their WBTC on Ethereum for various DeFi applications.
  6. Unwrapping: At any point, WBTC can be converted back to BTC by burning the WBTC tokens, and the equivalent BTC is released from reserve to the user.

A landmark in the crypto world

Wrapped Bitcoin is one of the most successful examples of interoperability between blockchains. By allowing Bitcoin to be used within Ethereum's DeFi ecosystem, WBTC not only extends the utility of BTC but also enriches the entire blockchain space, making it an essential development for anyone involved in cryptocurrency.


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