Hemi
Hemi is a breakthrough modular Layer-2 blockchain protocol that seamlessly merges Bitcoin’s rock-solid security with Ethereum’s versatile programmability by embedding a full Bitcoin node into an Ethereum-compatible EVM, known as the Hemi Virtual Machine (hVM). This architecture allows developers to write Solidity smart contracts that natively access Bitcoin data without relying on bridges or synthetic assets. Using its proprietary Proof-of-Proof (PoP) consensus, Hemi achieves “superfinality,” anchoring transactions in Bitcoin blocks for high integrity and resistance to reorgs, all while maintaining fast finality. Its Hemi Bitcoin Kit (hBK) gives developers the tools to build truly Bitcoin-powered DeFi applications, such as lending, staking, automated market makers, MEV systems, and multi-chain DAOs, using real BTC as collateral or yield sources.
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Merlin Chain
Merlin Chain will bring innovation and utilities on Layer2 with those native Layer1 assets. Merlin Chain offers low fees and high scalability as an EVM-compatible chain, ensuring swift transaction processing and enhancing transaction liquidity. Merlin Chain supports popular Bitcoin protocols such as BRC20, BRC420, Bitmap, Atomicals, Pipe, Stamp, and more, enabling a more extensive user base to interact on Bitcoin Layer2. Merlin Chain has implemented ZK-Rollup to enhance efficiency and scalability, with sequencer nodes responsibly managing data transmission via decentralized Oracles, ensuring transparency and security. Merlin Chain continues its commitment to fair launches and community-driven native innovations on Layer2, dedicated to delivering unique solutions designed for the Bitcoin network and its users.
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Rootstock
Rootstock is a pioneering Bitcoin sidechain that integrates Ethereum-compatible smart contract capabilities with Bitcoin's robust security. As an open source platform, it leverages Bitcoin's proof-of-work consensus mechanism, achieving over 60% of Bitcoin's hashing power through merged mining. This integration allows developers to deploy EVM-compatible smart contracts, enabling the creation of decentralized applications secured by Bitcoin's network. Rootstock's native currency, RBTC, is pegged 1:1 to Bitcoin, facilitating seamless interaction with DeFi protocols and dApps on the Rootstock network for activities such as minting, swaps, and gas fees. The PowPeg protocol ensures secure and efficient two-way transfers between Bitcoin and Rootstock, enhancing interoperability. Rootstock's ecosystem encompasses a diverse range of applications, from swapping and staking with platforms like Sushi to yield optimization with Beefy and trading on Oku.
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BitcoinOS
BitcoinOS (BOS) is a modular, open source smart contract platform designed to bring scalable, interoperable, and programmable functionality to Bitcoin without altering its base layer. Utilizing zero-knowledge (ZK) proofs through its BitSNARK protocol, BOS enables the execution of smart contracts directly on Bitcoin's mainnet, facilitating decentralized applications (dApps), decentralized finance (DeFi), and trustless cross-chain interactions. BitcoinOS' architecture comprises three layers: the Bitcoin Core base layer, an execution layer that aggregates and compresses transactions, and a compute layer consisting of interoperable rollups called Execution Environment Modules (EEMs). These EEMs support various virtual machines, including Ethereum Virtual Machine (EVM) and Rust-based environments, allowing developers to build applications in multiple programming languages.
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