BTCFi explained: How Elastos uses Bitcoin’s security to power DeFi

The decentralized finance (DeFi) landscape continues to evolve, and Bitcoin-centric solutions are gaining momentum. BTCFi is an emerging sector that transforms Bitcoin (BTC) from a passive store of value into an actively utilized asset in DeFi. 

A new report by Cointelegraph Research and Elastos delves into how Bitcoin’s security helps to create trustless, scalable financial ecosystems.

DeFi has traditionally been dominated by Ethereum, which accounts for over 50% of the sector’s total $175 billion total value locked (TVL). However, Bitcoin’s strong security and liquidity make it an attractive foundation for DeFi innovation.

Despite its strengths, Bitcoin’s lack of native smart contract functionality has historically limited its role in decentralized finance. The emergence of Bitcoin-centric DeFi solutions aims to bridge this gap and enable Bitcoin holders to participate in lending, stablecoin issuance and crosschain interoperability without custodial risks.

Elastos stands out as one of the leading players in this evolution by incorporating merged mining, a method that allows secondary blockchains to inherit Bitcoin’s security. 

Because approximately 50% of Bitcoin’s total 800 EH/s hashrate secures Elastos, the platform is positioned as one of the most computationally robust Bitcoin-linked networks. This ensures that financial applications built on Elastos maintain a level of security akin to that of Bitcoin itself.

At the core of Elastos’ infrastructure is its Elastic Consensus model, a hybrid mechanism that integrates auxiliary proof-of-work, bonded proof-of-stake, and proof-of-integrity. 

This multi-layered approach enables Elastos to provide secure, scalable financial services and enhances its appeal for DeFi applications. The Elastos Smart Chain, an Ethereum Virtual Machine-compatible sidechain, facilitates the development of decentralized applications (DApps) to ensure seamless integration with the broader DeFi ecosystem.

A major highlight of the report is the BeL2 Arbiter Network, designed to bring trustless Bitcoin transactions into DeFi. BeL2 leverages zero-knowledge proofs (ZKPs) to verify Bitcoin transactions on the Elastos and Ethereum networks without relying on centralized custodians. 

This mechanism allows Bitcoin to be used in DeFi protocols without synthetic assets or intermediaries and addresses a long-standing challenge in BTCFi.

This model has already attracted institutional interest. An initiative led by students and alumni of Harvard University is developing a BTC-backed stablecoin using BeL2. The platform also supports decentralized lending that allows Bitcoin holders to collateralize loans in stablecoins while retaining exposure to BTC’s price appreciation.

Elastos’ BTCFi approach competes with established Bitcoin DeFi solutions such as Stacks and Rootstock. Stacks primarily benefits from Bitcoin finality, and Rootstock focuses on EVM compatibility, while Elastos distinguishes itself by combining high security (via merged mining) and crosschain interoperability. This positions Elastos as a formidable player in the BTCFi landscape.

However, the report also identifies some challenges, such as regulatory uncertainties, ecosystem awareness and some technical complexities. Despite these hurdles, Elastos’ combination of Bitcoin security, trustless smart contract execution and institutional backing positions it for potential growth in the evolving BTCFi sector.

As the blockchain industry shifts toward crosschain interoperability and decentralized governance, Bitcoin-secured assets are expected to play an important role in reshaping both traditional and decentralized finance.

Elastos’ innovations, particularly through BeL2 and its decentralized identity (DID) framework, aim to enhance the security, scalability and institutional adoption of Bitcoin in DeFi. 

With Bitcoin-secured finance projected to expand significantly, Elastos’ infrastructure provides a robust foundation for the next wave of decentralized financial applications.

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