Have Ordinals Fueled Bitcoin’s L2 Arms Race?

14 Jun 2024 11 menit baca
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Ordinals Have Opened the Pandora’s Box of Layer 2 Experimentation

The introduction of Ordinals within the Bitcoin ecosystem has indirectly sparked a wave of innovation, particularly regarding Layer 2 (L2) implementations. This includes a diverse array of solutions such as rollups, anchored-chains, sidechains, drivechain, ecash, state channels, liquidity pools, spiderchains, and even Proof of Stake and staking L2s. These advancements bring new features and capabilities, bridging the gap between Bitcoin’s conservative “sound money, store of value” philosophy and the more experimental and versatile world of Ethereum’s DeFi and Web3 ecosystems.

Drivechains, for example, are a notable Layer 2 solution proposed to enhance Bitcoin’s functionality without altering its core protocol. They allow for the creation of sidechains where altcoins can operate on Bitcoin, facilitating permissionless experimentation, new features, and improved scalability. For a long time, Bitcoiners disregarded drivechain for technically nuanced reasons, but the conversation surrounding drivechain has renewed with a newfound vigour, reopening the debate for discussion. This model eliminates inter-token competition and integrates successful altcoin innovations into Bitcoin, potentially making altcoins obsolete. Drivechains require a soft fork for implementation, which has been a point of contention in the past, reflecting the broader debate over maintaining Bitcoin’s simplicity versus enabling advanced functionalities.

Rollups represent another critical innovation within Bitcoin’s Layer 2 landscape. These off-chain scaling solutions process transactions outside the main blockchain and then post summarised data back to Bitcoin’s Layer 1. This method enhances transaction throughput and reduces fees, addressing scalability issues. There are several types of rollups being explored, including optimistic rollups, which assume transactions are valid by default but can be disputed, and Zero Knowledge (ZK) rollups, which use cryptographic proofs to ensure transaction validity without revealing underlying data. These rollups maintain Bitcoin’s security while significantly boosting its capacity to handle more complex applications.

The development of other Layer 2 solutions like state channels, anchored-chains, and liquidity pools introduces additional functionalities to Bitcoin like smart contract capabilities and full Ethereum Virtual Machine (EVM) compatibility. State channels enable instant and low-cost transactions by allowing multiple transactions off-chain before recording the final state on-chain. Anchored-chains provide a way to secure additional blockchains using Bitcoin’s Proof of Work (PoW) consensus, while liquidity pools facilitate Decentralised Finance (DeFi) applications on Bitcoin by enabling users to pool their assets for lending, borrowing, and trading. These innovations collectively enhance Bitcoin’s capability to support more diverse and sophisticated use cases, blending its robust security with the dynamic features of modern blockchain applications.

The advent of Ordinals has catalysed a significant expansion in Bitcoin’s Layer 2 ecosystem, bringing a variety of innovative solutions that enhance its functionality and scalability. L2.watch, a site which tracks Bitcoin L2 projects, currently tracks 85 different projects in the space, which are currently working on expanding Bitcoin’s L2 capabilities in one way or another. These advancements bridge the traditional gap between Bitcoin’s conservative monetary approach and the experimental DeFi and Web3 features prevalent in Ethereum. By incorporating solutions like sidechains, rollups, state channels, and liquidity pools, Bitcoin is poised to offer a more versatile and comprehensive platform while maintaining its core principles of security and decentralisation.

Love Them or Hate Them the Impact of Ordinals is Undeniable

Ordinals and the Ordinals protocol were released as a novel way to inscribe individual Satoshis, the smallest units of Bitcoin, with unique metadata, thereby creating Non-Fungible Tokens (NFTs) directly on the Bitcoin blockchain. This innovative approach leveraged Bitcoin’s Taproot and Segwit upgrades to store data within transaction scripts, marking a significant departure from Bitcoin’s traditional financial transaction focus. The Ordinals protocol enabled the creation of Bitcoin-native digital artefacts, known as Inscriptions, which sparked considerable interest and debate within the Bitcoin community about the potential for additional non-financial uses of the blockchain.

Following the release of Ordinals, community-led experimentation rapidly expanded the possibilities for Bitcoin-based tokenisation and digital assets. This experimentation led to the development of Stamps, which embed data into the Bitcoin blockchain in a more permanent manner than Ordinals, and BRC-20 tokens, which utilised JSON inscriptions to create basic token contracts. Further advancements brought ORC-20 tokens, offering more flexibility with a variable supply and efficient use of block space. These innovations highlighted the demand for a broader range of digital assets and functionalities within the Bitcoin ecosystem, laying the groundwork for even more sophisticated tokenisation protocols.

The culmination of these efforts came with the launch of Runes, a new fungible token protocol designed to coincide with Bitcoin’s recent halving on April 20th, 2024. Runes were introduced as a user-friendly, UTXO-based alternative to existing tokenisation schemes, addressing inefficiencies and reducing blockchain bloat. By integrating seamlessly with Bitcoin’s architecture, Runes minimised the creation of unnecessary outputs and enhanced the overall usability of Bitcoin for tokenisation. This launch marked a significant milestone in Bitcoin’s evolution, as it embraced a more diverse range of digital assets and functionalities.

The wave of innovation sparked by Ordinals and subsequent protocols has led to a surge of interest in bringing NFTs, DeFi, and Web3 applications to Bitcoin via an expanding Layer 2 ecosystem. This vibrant ecosystem now includes a variety of projects focused on Decentralised Exchanges (DEXs), Decentralised Autonomous Organizations (DAOs), and advanced programmability. The explosion of new projects and approaches is transforming Bitcoin from a conservative “store of value” into a versatile platform capable of supporting complex financial instruments and DApps. This shift is enhancing Bitcoin’s utility, making it a formidable competitor in the rapidly evolving world of DeFi and Web3 technologies.

Some of the Bitcoin L2s Driving Innovation in the Bitcoin Ecosystem

Alpen Layer

Alpen Layer, developed by Alpen Labs, is a scaling solution designed to enhance Bitcoin’s utility and accessibility by leveraging zero-knowledge proofs (ZKPs). Founded on the principles of permissionless, programmable, and composable networks akin to the internet, Alpen Layer seeks to overcome Bitcoin’s fundamental obstacles of privacy, programmability, and scalability while preserving its simplicity and security. By utilising ZKPs, Alpen Layer enables private, verifiable computations and transactions, facilitating the creation of advanced financial systems directly on the Bitcoin blockchain. This includes flexible wallets, BTC-collateralized stablecoins, and DeFI applications, all secured by Bitcoin’s crypto-economic trust. Alpen Layer’s vision aligns with expanding global financial access and individual agency, providing a powerful, scalable, and private infrastructure for the next generation of Bitcoin-based financial systems.


Bitlayer is a cutting-edge Layer 2 solution for Bitcoin that integrates 100% EVM compatibility, allowing applications and developers from the Ethereum ecosystem to migrate seamlessly to Bitcoin without significant changes. Utilising Bitcoin’s security through BitVM, it ensures a trustless two-way peg combining Discreet Log Contracts (DLC) and BitVM, surpassing traditional multisig models. Bitlayer’s roadmap outlines progressive enhancements, from a PoS sidechain with multisig in its first mainnet version, evolving to a rollup-equivalent model, and finally achieving full Layer 1 verification with BitVM by mid-2025. This compatibility extends to existing Bitcoin wallets, such as Metamask and Unisat, facilitating user interaction and enabling developers to deploy smart contracts and projects on the Bitlayer network effortlessly.

Build On Bitcoin (BOB)

Build On Bitcoin (BOB) is a hybrid Layer 2 solution that merges the security of Bitcoin with the versatility of Ethereum, enabling developers familiar with the EVM to build on Bitcoin seamlessly. By combining Bitcoin’s proof-of-work security with best-in-class EVM tooling, BOB offers an efficient and secure environment for DApps. It connects to both Bitcoin and Ethereum ecosystems, leveraging dual liquidity to support DeFi mass adoption. The platform provides extensive developer resources, including a developer suite, SDK, and infrastructure tools, facilitating rapid development and deployment. BOB’s roadmap includes phases for enhancing its rollup model, aiming to integrate advanced technologies like BitVM and potential future ZK-Rollups.

Botanix Labs

Botanix Labs aims to transform Bitcoin into a fully programmable layer for the future of finance by developing the first decentralised EVM-equivalent Layer 2 on Bitcoin. Leveraging Bitcoin’s PoW for base settlement and decentralisation, Botanix integrates a PoS consensus model using the Spiderchain, a network of decentralised multisigs secured by a randomised subset of participants. This approach enables Bitcoin to maintain its unparalleled security while introducing the versatility of Ethereum’s EVM. Botanix Labs addresses Bitcoin’s current limitations in decentralised application development by creating a platform where developers can build decentralised exchanges, lending platforms, and more using Bitcoin as the native currency. The Spiderchain securely holds staked bitcoin in multisig wallets, ensuring the safety of funds through a system of checks and balances. Ultimately, Botanix envisions a hybrid system that combines the strengths of Bitcoin and Ethereum, fostering a robust ecosystem for DeFi, NFTs, and other decentralised applications on Bitcoin.


Lightec is a group focused on advancing blockchain and web3 by incorporating zero-knowledge proof (ZKP) technology. Their goal is to develop a Layer 2 solution for Bitcoin, using ZKP to enhance privacy and data ownership for users, while promoting decentralised cooperation. They are currently working on two main projects: opZKP and zkBTC. The opZKP project seeks to add a new opcode (OP_CHECKZKP) to Bitcoin Script, allowing Bitcoin nodes to validate ZKP data as a condition for spending UTXO. This is akin to OP_CHECKSIG, but it verifies zero-knowledge proofs instead. This enhancement would enable the creation of smart contracts with off-chain computations that are verified on-chain. The zkBTC project aims to create a ZKP-based cross-chain bridge between Bitcoin and Ethereum, enabling users to utilise their Bitcoin in smart contracts on both networks without depending on centralised entities. This project will ensure secure and decentralised processes for minting and redeeming Bitcoin, thus broadening Bitcoin’s utility within the larger cryptocurrency ecosystem.

Mirror L2

Mirror L2 is a decentralised and secure Bitcoin staking protocol designed for Proof-of-Stake (POS) Layer 1 and Layer 2 projects. It employs an innovative Multi-Signature Group (MSG) mechanism that allows hundreds to thousands of nodes to collaboratively manage multi-signature wallets. Nodes are required to stake 1 mBTC and face penalties for any malicious behaviour, ensuring security and trustlessness. The protocol bridges staked BTC into mBTC at a 1:1 ratio, making it EVM-compatible and facilitating integration with EVM-based BTC L2s. This system allows mBTC to be used as native gas for POS L1/L2s, thus enhancing demand for BTC and promoting broader DApp development. Nodes are elected through a community voting process, which progressively increases node numbers to ensure robust decentralisation and security.


ZKBase is a project focused on enhancing both Bitcoin and Ethereum’s security and scalability through advanced Layer 2 solutions, utilising ZK protocols. Dedicated to improving the blockchain ecosystem, ZKBase offers a suite of products including ZKSwap, a decentralised Automated Market Maker (AMM) exchange, and ZKSpace, which encompasses ZKSwap, ZKSquare (a payment service), ZKSea (an NFT marketplace), and ZNS (a Layer 2 naming service). By employing ZK-Rollups technology, ZKBase aims to provide foundational support for various decentralised applications (dApps) and decentralised finance (DeFi) projects, facilitating cross-chain bridges and decentralised exchanges (DEXs) for enhanced connectivity between Bitcoin and Ethereum networks. The roadmap includes significant developments such as the introduction of a BTC ZKEVM solution, a decentralised BTC bridge, and extensive cross-chain functionality, positioning ZKBase as a pivotal player in the blockchain interoperability landscape.


SatoshiVM is a decentralised Bitcoin ZK Rollup Layer 2 solution that integrates the EVM ecosystem, allowing Bitcoin to issue assets and build applications using native BTC as gas. Designed with simplicity, SatoshiVM enables users and developers to interact and build on it just like Ethereum. Its architecture includes three layers: the Settlement Layer on Bitcoin for on-chain validation and verification, the Sequencing Layer for maintaining functionality and temporarily storing transactions and states, and the Proving Layer responsible for generating proofs and verifying transactions and states on Bitcoin. This setup leverages Bitcoin’s Taproot transactions to ensure the validity and security of SatoshiVM operations.


SatoshiSync is a chain-agnostic protocol designed to power Runes, Inscriptions, and Bitcoin Layer 2 solutions, facilitating seamless cross-chain interactions. It allows users to customise and deploy BRC20 tokens, bridge them to ERC20 or any EVM-compatible blockchain, and create markets with a single click through Uniswap. SatoshiSync offers a decentralised, no-code platform for creating open markets for Runes and Inscriptions, enabling users to track, discover, buy, and swap them easily. Its native token, SSNC, provides utilities like revenue capture from cross-chain fees, a deflationary supply mechanism, staking for rewards, and governance rights, empowering holders to participate in the platform’s development and earn rewards.

The post Have Ordinals Fueled Bitcoin’s L2 Arms Race? appeared first on Bitfinex blog.

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