
Bitcoin DeFi encompasses decentralized financial services built on the Bitcoin network. Historically, decentralized finance developed on blockchains with smart contract capabilities, such as Ethereum. These platforms offer automated protocols for lending, decentralized exchanges (DEXs), and asset management.
Bitcoin was designed primarily as a "store of value (digital gold)" and a payment method, with limited smart contract functionality. Recent technological advancements, however, have enabled the emergence of decentralized financial services leveraging Bitcoin.
Examples of Bitcoin DeFi services include:
At one point, the total value locked (TVL) in Bitcoin DeFi protocols surged 22-fold year-over-year, yet still accounted for only about 0.8% of the total Bitcoin supply—leaving most Bitcoin untouched. Experts expect the market to potentially grow to hundreds of billions of dollars.
Bitcoin DeFi represents a new effort to unlock the latent value of the world's largest cryptocurrency, attracting significant interest from both investors and developers.
Growing interest in Bitcoin DeFi is propelled by several important factors. The following four reasons are explained in detail.
Although Bitcoin's market size is in the tens of trillions of yen, most assets are held long-term (HODL). Only about 0.8% of Bitcoin’s supply is utilized in DeFi, according to certain surveys. If this idle capital were mobilized, analysts estimate a new market opportunity worth approximately ¥140 trillion ($1 trillion).
Toby Lewis, co-founder of the Ordinals project (OrdinalsBot), stated the following about the Bitcoin DeFi ecosystem:
The Bitcoin DeFi ecosystem could reach a multi-trillion dollar market capitalization in the coming years and become a major driver of growth in this crypto market cycle.
Bitcoin DeFi is seen as an innovative approach to unlocking this massive capital efficiency. By providing liquidity to otherwise dormant Bitcoin and using it as collateral or managed assets, new forms of value creation are anticipated.
Recent years have seen a wave of technical innovations aimed at enabling DeFi on Bitcoin.
Key advancements include:
The Ordinals protocol marked a significant turning point. Existing Layer 2 platforms such as Stacks and Rootstock gained renewed attention, and new projects proliferated. These innovations prove that Bitcoin, despite its technical limitations, can support a wide range of financial services through creative approaches.
As a result, Bitcoin is evolving from a simple store of value into a platform capable of complex financial transactions.
Macroeconomic trends have also fueled Bitcoin DeFi’s growth.
Past Bitcoin halving events have driven price surges and new all-time highs. The approval of spot Bitcoin ETFs in the US accelerated institutional involvement, invigorating the market.
Institutions increasingly seek not only to hold Bitcoin, but to generate yield from it. At one point, the Bitcoin staking market reached $5.5 billion, with strong demand even for annual yields of 3–5%.
Rising demand for yield on managed Bitcoin is a powerful force behind Bitcoin DeFi’s expansion. The addition of new options beyond traditional "buy and hold" investments has deepened and diversified the market.
Institutional participation also drives market maturity and the development of more sophisticated financial products and services.
Historically, the Bitcoin community was shaped by a conservative philosophy (Bitcoin Maximalism), emphasizing simplicity and a focus on payments and value storage.
Since the launch of the Ordinals protocol, sentiment has shifted:
These changes have fueled interest in new use cases and deepened understanding of DeFi among developers and users. What was once criticized as "compromising Bitcoin’s purity" is now welcomed as innovation that enhances its value.
This shift is crucial for Bitcoin DeFi’s growth. With both technical possibilities and cultural acceptance, Bitcoin DeFi has entered a robust growth phase.
While both Bitcoin DeFi and Ethereum DeFi are built on decentralized finance, they fundamentally differ in technical infrastructure and service scope. Here are the main distinctions explained.
Ethereum was designed from the outset to implement smart contracts directly at Layer 1 (L1), allowing complex financial protocols to be built natively on-chain. Developers use programming languages like Solidity to freely design and deploy services such as lending, trading, and derivatives.
Bitcoin L1, by contrast, prioritizes security and decentralization, and its programming functionality is limited to basic scripting. As a result, Bitcoin DeFi is primarily built on Layer 2 (L2) or sidechains.
Technical approaches:
This foundational difference drives divergent development paths for both ecosystems.
Ethereum remains the leader in the DeFi market. At one point, there was a large gap in TVL (total value locked) between the two:
| Item | Bitcoin DeFi | Ethereum DeFi |
|---|---|---|
| TVL Scale | Approx. $1.5 billion | Approx. $81 billion |
| Market Cap Ratio | 0.13% | 27% |
Bitcoin DeFi is still small and developing, but this means there is considerable room for growth. Even a modest inflow from Bitcoin’s large market cap could dramatically expand the DeFi market.
Ethereum DeFi has developed a diverse, highly interoperable ecosystem over several years. While Bitcoin DeFi is growing quickly, its ecosystem is not yet as mature.
Ethereum DeFi offers highly varied financial services, including:
Bitcoin DeFi is currently focused on:
Advanced products such as derivatives and insurance protocols are still emerging in Bitcoin DeFi. Leading projects include Stacks and RSK (Sovryn), but the diversity seen in Ethereum is unmatched.
Recently, new use cases—such as oracle services and bond issuance protocols—have also appeared, signaling increasing diversification.
Bitcoin itself boasts the longest operational history and greatest hash rate, resulting in exceptional security and decentralization. However, since most Bitcoin DeFi relies on L2 or sidechains, there are specific risks:
Ethereum’s L1 supports mature smart contract functionality, allowing direct use of L1 security at the protocol level—though risks vary by project.
Ethereum DeFi has also experienced losses due to smart contract bugs and vulnerabilities, so neither ecosystem is completely risk-free. Each has unique risk profiles that must be understood.
The Ethereum community has always encouraged bold, innovative financial experimentation:
The Bitcoin community was traditionally more conservative (Bitcoin Maximalism):
Recently, however, attitudes in the Bitcoin community have shifted:
These cultural differences strongly influence each ecosystem’s development speed and direction.
| Item | Bitcoin DeFi (BTCFi) | Ethereum DeFi (Eth DeFi) |
|---|---|---|
| Technical Foundation | Implemented via Layer 2/sidechains | Direct L1 implementation (Solidity, etc.) |
| Ecosystem Scale | TVL approx. $1.5 billion (rapid growth) | TVL approx. $81 billion (mature) |
| Main Projects | Stacks, RSK, Lightning (few) | Uniswap, Aave, Curve (many) |
| Service Scope | Focus on lending, DEX, stablecoins | Wide scope including derivatives, insurance |
| Security & Decentralization | L2 dependence, centralization risks | High L1 security, varies by project |
| User Culture | Conservative → Shifting (Active BTC Use) | Innovative, experimental (user-driven) |
Bitcoin DeFi, while less mature than Ethereum DeFi, is growing rapidly. The recent surge suggests it may become the stage for the next major DeFi boom.
Each ecosystem has distinctive strengths and challenges, and they are complementary. Investors and users should understand these traits and choose according to their own goals and risk tolerance.
Statistics show that Bitcoin DeFi’s TVL expanded from hundreds of millions to about $7 billion over a certain period, supported by rising Bitcoin prices and the launch of new projects. Ongoing technical innovation and growing community maturity are expected to drive further growth.
Continued improvements in Layer 2 technology, increased institutional participation, and regulatory clarity could make Bitcoin DeFi a major force in the decentralized finance market.
Bitcoin DeFi is primarily built using Layer 2 (L2) technologies and sidechains. Since Bitcoin’s Layer 1 (L1) cannot efficiently execute complex smart contracts, these extensions are essential. The following is a detailed overview of the main technical foundations and their features.
The Lightning Network (LN) is a Layer 2 solution for fast, low-cost Bitcoin microtransactions. Since its launch, it has steadily gained traction as a payment infrastructure.
Lightning Network opens "payment channels" using multisignature addresses independent of the main Bitcoin blockchain. Transactions within the channel execute instantly, with only the channel closure recorded on-chain.
Key advantages include:
Lightning Network adoption includes:
DeFi applications are emerging on Lightning Network:
Lightning Network is a key payments backbone for Bitcoin DeFi and is expected to keep evolving.
Stacks adds smart contract functionality to Bitcoin as a Layer 2 blockchain. Its unique PoX (Proof of Transfer) consensus mechanism links directly to Bitcoin, leveraging its security for advanced financial applications.
Key DeFi projects on Stacks include:
These projects enable Bitcoin holders to engage in lending, trading, and yield-generating activities.
Stacks’ ecosystem grew rapidly, with TVL jumping from $13.2 million to $226 million—a 1,611% increase. STX market cap topped $3.9 billion, up more than 250% year-over-year.
This growth is driven by rising interest in Bitcoin DeFi and Stacks’ unique technical advantages.
Stacks is continuously improving:
These upgrades will enhance Stacks as a faster, safer, and more user-friendly Bitcoin DeFi platform.
Stacks is a leading platform for "Bitcoin-based decentralized finance," playing a central role in the ecosystem’s growth.
Rootstock is a Bitcoin sidechain with Ethereum Virtual Machine (EVM) compatibility, featuring "merged mining" that allows Bitcoin miners to secure both networks. It enables smart contracts with Bitcoin-grade security.
Rootstock supports comprehensive DeFi services:
These projects offer Bitcoin users a range of financial services comparable to Ethereum.
Rootstock’s TVL reached about $170 million, and the ecosystem is expanding quickly, led by Sovryn. Rootstock is recognized as a major Bitcoin DeFi platform.
Its compatibility with Ethereum development tools lowers entry barriers for developers and speeds ecosystem growth.
Rootstock combines the convenience of Ethereum with Bitcoin’s security. Building on Bitcoin’s large market cap and reliability, and leveraging Ethereum’s toolset and expertise, Rootstock is expected to offer the strengths of both.
It plays a crucial bridging role in Bitcoin DeFi development.
Liquid Network is a federated sidechain designed for fast, private institutional transfers and tokenized asset issuance, run by a consortium of trusted participants.
Liquid Network specializes in institutional and professional applications:
Liquid is primarily a B2B platform, sacrificing full decentralization for speed and privacy to meet institutional needs.
Within the Bitcoin DeFi ecosystem, Liquid serves as key infrastructure for institutions, especially those needing regulatory compliance.
| Item | Lightning | Stacks | Rootstock | Liquid |
|---|---|---|---|---|
| Type | Layer 2 (Payments) | Layer 2 (Smart Contracts) | Sidechain (EVM-Compatible) | Federated Sidechain |
| Main Function | Fast transfers and payments | DEX, stablecoins | Comprehensive DeFi platform | Fast, private institutional transfers |
| Asset TVL | Approx. $270 million | Approx. $226 million | Approx. $170 million | Tens to hundreds of millions |
| Strengths | Instant, low-cost BTC payments | BTC-linked economic zone | High portability via Ethereum compatibility | Fast, private transactions for institutions |
| Challenges | Limited DeFi functionality | Proprietary language (non-EVM) | Centralization risk in BTC bridging | Lack of full decentralization |
Each Layer 2 and sidechain solution offers different strengths and use cases, dividing roles within Bitcoin DeFi. Ongoing technical improvements and greater interoperability are expected to accelerate ecosystem growth.
Investors and users should understand each platform’s features and select those best suited to their goals—whether payments, trading, or asset management.
Innovative projects are continually emerging to improve Bitcoin’s DeFi functionality and scalability. Here’s a detailed look at key initiatives.
Ordinals is a protocol for inscribing data, such as images and text, onto Bitcoin’s smallest unit, the satoshi. This enables NFTs and BRC-20 tokens to be issued directly on the Bitcoin blockchain.
Ordinals assign a unique number to each satoshi, allowing data to be "inscribed." This enables:
BRC-20 tokens, such as ORDI and PEPE, gained significant attention, creating a market worth hundreds of millions of dollars. However, challenges emerged:
To address these challenges, the "Runes" standard was proposed. Runes efficiently utilize Bitcoin’s UTXO model for lower-fee token issuance and transfers.
Ordinals and BRC-20 have had a major impact on the Bitcoin community, proving the viability of NFTs and tokens on Bitcoin and accelerating DeFi development.
Statechains enable direct, off-chain transfers of Bitcoin UTXO ownership. Unlike Lightning Network’s channel model, Statechains transfer the UTXO itself.
Statechains allow off-chain transfers with the following benefits:
Mercury advances Statechain technology by "blinding" transaction details, so even the coordinator cannot see them.
Main features:
Mercury may be used for:
Statechain and Mercury significantly enhance Bitcoin’s privacy and efficiency.
Merlin Chain is an emerging Layer 2 project combining ZK rollups, oracles, and fraud detection for a comprehensive DeFi platform.
Merlin Chain integrates:
Merlin Chain’s "Merlin's Seal" campaign achieved:
This success made Merlin Chain a major Bitcoin DeFi platform.
Merlin Chain offers:
Merlin Chain’s risks include:
Careful risk management is essential for investors.
DeFiChain is an independent blockchain based on Bitcoin, offering DEX, lending, and staking services.
DeFiChain initially ranked high in TVL, but lost momentum due to:
DeFiChain faces criticism for:
DeFiChain was an early experiment but is not considered mainstream today. It still maintains a dedicated community and certain use cases.
Its experience demonstrates that technical innovation, community support, and close integration with Bitcoin are key for success.
Bitcoin DeFi offers services analogous to traditional centralized finance. Here are the main use cases and mechanisms.
Lending is a core Bitcoin DeFi service. Users can deposit Bitcoin to earn interest, or provide collateral to borrow other assets.
Sovryn Lending
Sovryn allows Bitcoin and USDT lending with annual interest rates, typically:
Lenders deposit into liquidity pools; borrowers use these funds and must provide collateral, subject to automatic liquidation if value drops below thresholds.
Stacks (Arkadiko) Lending
Stacks enables borrowing xUSD stablecoins using STX as collateral, with plans for direct Bitcoin-backed loans.
Failures of centralized lenders like Celsius and BlockFi have increased demand for transparent, non-custodial DeFi lending.
Typical yields are 1–5% annually; users should fully understand the risks.
Bitcoin DeFi features DEXs for crypto swaps without intermediaries.
Sovryn DEX
Stacks (ALEX)
Lightning Network P2P Trading
Mercury Wallet enables OTC trades via Lightning Network.
DEXs offer privacy and self-custody but need improvements in liquidity and ease of use.
Bitcoin-backed stablecoins are vital for users seeking price stability.
Dollar on Chain (DOC)
Bridged USDT and USDC
Stablecoins from other chains are being introduced via bridges.
Bitcoin-backed stablecoins are expected to become mainstream exchange media in the ecosystem.
Bitcoin does not natively support staking, but several mechanisms now enable yield generation.
Stacks Stacking
Direct Bitcoin Staking on Layer 2
Platforms like Stacks, RSK, and Merlin offer direct staking; Babylon and EigenLayer use Bitcoin as security for other networks.
Staking offers additional yield, but risk management is key.
Bitcoin DeFi covers a broad range—from lending and trading to derivatives, NFTs, and asset tokenization. Innovation will keep generating new use cases.
Participating in Bitcoin DeFi requires specific preparations and steps. The following guide is especially relevant for residents of Japan.
Recommended wallets include:
Lightning Network
Stacks
Rootstock (RSK)
Liquid
Download wallets from official sites and safeguard your seed phrase.
Use bridge operations to move Bitcoin to Layer 2 or sidechains.
Lightning Network
Stacks
Rootstock
Liquid
Bridging may take minutes to hours; Rootstock peg-out may require up to 16 hours.
Most DApps use English interfaces; start small until you’re familiar.
Returning Bitcoin to Layer 1 incurs standard Bitcoin fees, which may spike during congestion.
Withdrawals may take minutes to hours; security-focused protocols may require up to a day.
Consult a crypto-savvy tax accountant if needed.
Start small, learn thoroughly, and build experience gradually.











