WBTC Alternatives: A Comprehensive Guide to Wrapped Bitcoin Tokens

Most blockchains were designed to operate in isolation, which has hindered interoperability in the DeFi market. Wrapped tokens emerged as a solution

Most blockchains were designed to operate in isolation, which has hindered interoperability in the decentralized finance (DeFi) market. To address this issue, wrapped tokens emerged as a solution, allowing native assets from one chain to be used in the DeFi protocols on other chains.

Wrapped Bitcoin (WBTC) is the biggest wrapped token by market capitalization, allowing Bitcoin (BTC) holders to deploy the digital currency in Ethereum’s (ETH) thriving DeFi ecosystem. However, WBTC also has downsides, with centralization being a key concern. This has led to the launch of WBTC alternatives that address the wrapped token’s limitations.

Here’s a list of the leading WBTC alternatives and how they compare to WBTC.

What Is Wrapped Bitcoin (WBTC)?

Wrapped Bitcoin (WBTC) is an ERC-20 token backed 1:1 by Bitcoin. It was launched to allow decentralized apps (dApps) on Ethereum to access Bitcoin. Thanks to this integration, developers can easily write smart contracts incorporating Bitcoin transfers.

The token adds Bitcoin liquidity to the Ethereum ecosystem, allowing BTC holders to interact with the DeFi on Ethereum while benefiting from many of Bitcoin’s core features.

To convert your BTC to wBTC, you must first send it to a custodian or merchant who’ll oversee the minting and burning process. The custodian reserves the BTC and mints an equivalent amount of WBTC before sending the tokens to your wallet on the new chain.

WBTC started on Ethereum but now is an option on several other blockchains and Ethereum Layer 2s, bringing Bitcoin liquidity to DeFi ecosystems across the cryptoverse.

WBTC Alternatives You Should Know

WBTC helped bridge the world’s largest blockchains, Bitcoin and Ethereum, and turned Bitcoin into a popular asset in the DeFi market. The wrapped token also paved the way for other tokens backed 1:1 by BTC, all of which are bringing BTC into their ecosystem to expand the use cases for the digital currency.

Here’s a list of WBTC alternatives worth checking out.

tBTC

tBTC or Threshold Bitcoin is a permissionless BTC-pegged token launched by Threshold Network in 2020 as a wrapped form of BTC operating on Ethereum.

Unlike WBTC, which relies on custodians, tBTC uses a group of nodes called signers to manage BTC deposits. Signers are selected randomly from a pool of candidates and are rotated weekly. Each signing group contains three nodes, who must first overcollateralize the incoming BTC by 150% of the value in ETH.

Signers then generate a Bitcoin wallet to which users can send their BTC. Users receive proof of their deposit, which they can send to the Ethereum network to receive the tBTC deposit token (TDT) that allows them to mint tBTC. However, the minting party must deposit a small ETH bond to guarantee they won’t default on the transaction at any point. If found at fault, the protocol forfeits the bond.

To redeem tBTC back into BTC, users must undergo a multi-step verification where the Signers release the locked BTC from the smart contract into the user’s wallet, as the tBTC token is burned.

tBTC achieves decentralization through the signers groups and the Threshold Council. Anyone who stakes 40,000 or more T tokens is eligible to become a tBTC signer. At the same time, the Threshold Council may allow anyone with the ability to run a node to join in and boost system performance.

tBTC has maintained its peg to bitcoin since launching in 2020, thanks to its unique approach that utilizes the supply of BTC to consistently uphold stability. The token currently has a total value locked (TVL) of $193.51 million.

renBTC

renBTC, which stands for renewed Bitcoin, is another ERC-20 token pegged 1:1 to Bitcoin and built on Ren Virtual Machine (RenVM).

Also launched in 2020, RenBTC uses the lock and mint mechanism, which creates an HTLC transaction on the Bitcoin network and a smart contract on Ethereum. HTLC, a method for routing payments through multiple channels, helps execute a balance blocking operation on Bitcoin. On the other hand, the smart contract created facilitates minting of RenBTC on Ethereum.

All of this is possible in a decentralized environment, thanks to RenVM, which facilitates blockchain interoperability and allows for trustless cross-asset transfers. The protocol uses a decentralized network of validators, known as DarkNodes, to ensure security and achieve decentralization during the minting process.

By implementing the Proof of Stake (PoS) consensus model, anyone can become a network validator for RenBTC. To become eligible, you must first lock up 100,000 REN (the network’s native token) with the protocol. However, the 100K cap poses a centralization risk on the network, as there