Bitfinity’s Bitcoin Sidechain on ICP Secures £7 Million Investment

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The web3 landscape is witnessing a pivotal shift as Bitfinity Network announces a £7 million funding round led by heavyweight investors Polychain Capital and ParaFi Capital. This strategic capital infusion marks a major milestone in the evolution of blockchain infrastructure, particularly in expanding Bitcoin’s utility beyond simple value transfer. By building a high-performance sidechain for Bitcoin on the Internet Computer Protocol (ICP), Bitfinity is redefining how decentralized applications interact with the world’s most secure and widely adopted cryptocurrency.

This breakthrough positions Bitfinity at the forefront of next-generation Bitcoin innovation—bridging the gap between Bitcoin’s unmatched decentralization and the dynamic capabilities of modern smart contract platforms.

👉 Discover how developers are unlocking Bitcoin’s full potential with cutting-edge sidechain technology.

Unveiling the Bitfinity Ethereum Virtual Machine (EVM)

Revolutionizing Bitcoin Efficiency

At the heart of Bitfinity’s innovation lies its custom-built Ethereum Virtual Machine (EVM), seamlessly integrated into the Internet Computer blockchain. Unlike traditional EVM-compatible chains that suffer from congestion and high fees, Bitfinity leverages ICP’s unique architecture to deliver transaction speeds up to 100 times faster than Ethereum, all while drastically reducing operational costs.

This performance leap enables developers to build scalable, responsive dApps that interact directly with Bitcoin—without relying on slow, trust-heavy bridge mechanisms. The result? A leaner, more efficient ecosystem where Bitcoin can actively participate in decentralized finance, NFTs, and programmable transactions.

By combining Ethereum’s developer-friendly environment with Bitcoin’s security backbone, Bitfinity creates a hybrid model that unlocks new possibilities for both ecosystems.

The Core of Bitfinity: Chain-Key Technology

A New Paradigm for Cross-Chain Asset Management

Traditional cross-chain bridges have long been plagued by security vulnerabilities, custodial risks, and complexity. Bitfinity addresses these challenges head-on through its integration of Chain-Key technology from the Internet Computer.

This groundbreaking cryptographic framework allows smart contracts on ICP to directly verify and manage Bitcoin transactions—enabling native control over Bitcoin and Ordinal assets without intermediaries. In practice, this means that ckBTC, a trustless representation of Bitcoin on ICP, can be securely minted, transferred, and used within dApps—all governed by decentralized consensus rather than centralized gatekeepers.

Compared to conventional wrapped asset models, Bitfinity’s approach offers superior transparency, reduced attack surface, and true decentralization—making it one of the most secure pathways for bringing Bitcoin into DeFi.

👉 Explore how trustless asset bridging is transforming the future of cross-chain interoperability.

Expanding the Horizons of Decentralized Finance

Solving Congestion with Seamless Integration

Earlier this year, the integration of Bitcoin with the Internet Computer blockchain marked a turning point for decentralized finance. As the popularity of the Ordinals protocol surged, so did network congestion on Bitcoin—highlighting the urgent need for scalable off-chain solutions.

Bitfinity’s architecture eliminates reliance on hardware-based signing setups or third-party custodians. Instead, it uses decentralized threshold signing protocols powered by Chain-Key cryptography to enable seamless, trustless interactions between Bitcoin and smart contracts.

This integration not only alleviates pressure on the base layer but also opens the door for innovative financial instruments such as Bitcoin-backed lending markets, yield-generating vaults, and programmable payments—all built on a foundation of full decentralization.

With its EVM mainnet launch on the horizon, Bitfinity is poised to attract Ethereum developers eager to tap into Bitcoin’s vast liquidity while enjoying ICP’s near-instant finality and low-cost execution.

Key Features of the Bitfinity EVM

Solidity Smart Contracts Meet Bitcoin

One of Bitfinity EVM’s most compelling features is its native support for Solidity-based smart contracts that can directly access ckBTC and other Bitcoin-pegged assets via the Chain-Key protocol. This means developers can write familiar Ethereum-style code while building applications that leverage real Bitcoin value—without sacrificing security or decentralization.

Additional advantages include:

These capabilities make Bitfinity an attractive destination for teams looking to build the next generation of DeFi protocols, gaming economies, and social dApps powered by Bitcoin.

The Road Ahead: Bitfinity’s Strategic Roadmap

Building a Comprehensive On-Chain Indexer

Looking forward, Bitfinity plans to deepen its integration with emerging Bitcoin innovations by incorporating Taproot assets such as Ordinals and BRC-20 tokens into its ecosystem. These digital artifacts—representing everything from collectibles to meme coins—are reshaping how users perceive Bitcoin’s utility beyond mere currency.

To support this growth, Bitfinity aims to develop a comprehensive on-chain indexer capable of tracking and querying transactions involving these assets in real time. Such a tool will empower developers to build powerful analytics dashboards, NFT marketplaces, and wallet services tailored specifically for the evolving Bitcoin ecosystem.

This strategic move underscores Bitfinity’s long-term vision: not just to connect Bitcoin to DeFi, but to make it a first-class citizen in the broader web3 universe.

👉 See how developers are building the future of Bitcoin-powered dApps today.

Shifting the Digital Perception of Bitcoin

For decades, Bitcoin has been viewed primarily as “digital gold”—a store of value resistant to inflation and censorship. But with innovations like Bitfinity, we’re entering a new era where Bitcoin becomes programmable money.

By enabling secure, scalable, and decentralized interactions between Bitcoin and smart contracts, Bitfinity is helping shift the narrative—from passive holding to active participation. Users can now earn yield on their BTC holdings, engage in peer-to-peer derivatives trading, or even use Bitcoin as collateral in gaming environments—all without ever leaving a trustless environment.

As adoption grows and developer activity accelerates, Bitfinity is positioned to become a cornerstone of Bitcoin’s expansion into decentralized applications.


Frequently Asked Questions (FAQ)

Q: What is Bitfinity Network?
A: Bitfinity Network is a Bitcoin sidechain built on the Internet Computer Protocol (ICP) that enables high-speed, low-cost transactions and supports EVM-compatible smart contracts. It allows developers to build decentralized applications that interact natively with Bitcoin through trustless mechanisms like ckBTC.

Q: How does Bitfinity improve upon traditional blockchain bridges?
A: Unlike conventional bridges that rely on centralized custodians or vulnerable multi-signature schemes, Bitfinity uses Chain-Key technology to enable decentralized, cryptographic verification of Bitcoin transactions. This eliminates single points of failure and significantly enhances security.

Q: What is ckBTC and how does it work?
A: ckBTC is a trustless representation of Bitcoin on the Internet Computer blockchain. It is backed 1:1 by actual BTC and secured through decentralized threshold cryptography. Users can mint ckBTC by locking their Bitcoin in a smart contract verified by ICP’s network of nodes.

Q: Can Ethereum developers easily migrate to Bitfinity?
A: Yes. Because Bitfinity supports the Ethereum Virtual Machine (EVM), developers can deploy existing Solidity smart contracts with minimal changes. Combined with low fees and fast finality, this makes Bitfinity an appealing platform for Ethereum-native teams exploring Bitcoin integration.

Q: What are the main use cases for Bitfinity?
A: Key applications include DeFi protocols (lending, swaps, yield farming), NFT marketplaces for Ordinals and BRC-20 tokens, blockchain gaming economies using Bitcoin as in-game currency, and programmable payment systems leveraging Bitcoin’s security with smart contract logic.

Q: Is Bitfinity focused only on financial applications?
A: While DeFi is a major focus, Bitfinity’s infrastructure supports a wide range of use cases including decentralized identity, social media platforms, DAO tooling, and data storage solutions—all enhanced by direct access to Bitcoin’s value layer.


By merging the strengths of Bitcoin, Ethereum development tools, and Internet Computer scalability, Bitfinity is charting a bold course for the future of decentralized systems. As investment flows in and mainnet deployment nears, it stands as one of 2025’s most promising advancements in blockchain interoperability.