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Starknet Scaling Bitcoin — The What and Why

4 min readMar 13, 2025

Bitcoin’s security and decentralisation are unmatched, but scalability has always been a challenge. Now, Starknet has unveiled a bold plan to change that — bringing smart contracts, lower fees, and faster transactions to the network. Let’s take a closer look at what this means and why it matters.

Starknet, a prominent Layer-2 scaling solution initially built for Ethereum, has proposed an ambitious integration with Bitcoin. The core idea is for Starknet to become Bitcoin’s execution layer, effectively enhancing Bitcoin’s capabilities and addressing some of its current limitations. This move aims to bring a new dimension of functionality to the original cryptocurrency.

So, what exactly is proposed?

Enhanced Scalability: Starknet’s technology is designed to significantly increase Bitcoin’s transaction throughput, moving from its current rate of approximately 7 transactions per second to potentially thousands. This improvement aims to make Bitcoin more practical for everyday use and broader adoption.

Reduced Transaction Fees: By processing transactions off-chain on Starknet and then settling them on Bitcoin, the proposal anticipates a significant reduction in transaction fees. Lower fees would make Bitcoin more accessible for micropayments and general transactions.

Unlocking dApps on Bitcoin: The integration seeks to introduce smart contract functionality to Bitcoin. This would empower developers to build a wide range of decentralised applications, including DeFi services like staking, lending, and decentralised exchanges, directly on the Bitcoin network.

Improved User Experience: Faster transaction speeds and lower fees are expected to contribute to a more seamless and user-friendly experience for Bitcoin users.

Interoperability: Starknet aims to become the first Layer 2 to settle natively on both Bitcoin and Ethereum, potentially leading to a more unified blockchain ecosystem. This could foster greater interoperability and the seamless flow of assets and data between the two leading blockchains.

Strategic Bitcoin Reserve: StarkWare, the core technology provider for Starknet, has established a Strategic Bitcoin Reserve, committing to holding a portion of its treasury in Bitcoin. This reflects a long-term commitment to Bitcoin’s ecosystem and aligns with Starknet’s vision of deeper integration with the network.

Partnerships and Bitcoin Wallet Integration: Starknet is collaborating with Xverse, a Bitcoin wallet, to integrate Bitcoin assets into its network. This partnership enhances the accessibility and utility of Bitcoin within the Starknet ecosystem, potentially unlocking new functionalities for Bitcoin users.

What is the motivation behind this proposal?

The primary motivation behind Starknet’s proposal is to address Bitcoin’s inherent limitations in scalability and programmability. Despite its robust security and decentralisation, Bitcoin’s transaction capacity and scripting capabilities have historically restricted its use cases beyond simple buying, selling, and transferring.

Scaling Bitcoin for Mass Adoption: The current transaction throughput of Bitcoin is seen as a bottleneck preventing its widespread adoption as a peer-to-peer electronic cash system for everyday transactions. Starknet’s scaling solution aims to overcome this limitation and enable Bitcoin to serve a much larger number of users.

Expanding Bitcoin’s Utility: By introducing smart contract functionality, the proposal seeks to unlock new and more complex applications on Bitcoin, bringing it into the realm of DeFi and other decentralised services. This would allow Bitcoin holders to utilise their assets in more diverse and productive ways.

Lowering Transaction Costs: High transaction fees on the Bitcoin network can be a barrier to adoption, particularly for smaller transactions. Reducing these costs through off-chain processing on Starknet aims to make Bitcoin more economically viable for a wider range of use cases.

Preserving Bitcoin’s Core Principles: While aiming to enhance Bitcoin’s functionality, the proposal also emphasises the importance of preserving Bitcoin’s fundamental principles of security, trustlessness, and decentralisation. By leveraging Bitcoin as a settlement layer, Starknet intends to inherit its strong security guarantees.

In essence, Starknet’s vision is to unleash Bitcoin’s full potential by making it more scalable, efficient, and versatile, aligning with Satoshi Nakamoto’s original vision of a peer-to-peer electronic cash system and opening doors to new possibilities within the decentralised finance landscape.

Building the Future Alongside Starknet

We’re excited to see Starknet take this bold step toward Bitcoin — and we’re here to help make it happen. Expanding Bitcoin’s functionality while preserving its core principles is no small feat, but ensuring these innovations are secure and scalable is what we do best.

At Extropy, we specialise in blockchain security, zero-knowledge proofs, and decentralised technologies. If you’re building in this space and need expert insights or security reviews, let’s talk — we’re ready to push the future of blockchain forward together.

📍 Website: security.extropy.io
✉️ Email: info@extropy.io

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Extropy.IO
Extropy.IO

Written by Extropy.IO

Oxford-based blockchain and zero knowledge consultancy and auditing firm

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