Overview
• Bitcoin Layer-2 protocol built on BitVM, enabling smart contracts and scalability without modifying Bitcoin’s base layer.
• Supports EVM-compatible and alternative runtimes like CairoVM for a familiar developer experience.
• Designed as a high-security sandbox where Ethereum-style dApps can run using Bitcoin’s trust and finality.
• Imagine Bitcoin as a rock-solid vault—Bitlayer turns it into a programmable machine without touching the vault’s walls.
• Developers can use familiar Ethereum tools while inheriting Bitcoin’s security guarantees.
• Enables trustless DeFi, gaming, NFTs, and cross-chain functionality directly backed by BTC.
Execution Model
Hybrid Optimistic + ZKP system for off-chain computation with compact on-chain state proofs.
Bridging
Native BTC bridge via BitVM with trust-minimized two-way transfers, using OP-DLC and fraud proofs instead of custodians.
Security
Anchored directly to Bitcoin’s main chain, with over 30% of BTC hashrate (Antpool, F2Pool, SpiderPool) supporting BitVM execution.
Rollup Architecture
Modular rollup design batching transactions, running them through the Layered Virtual Machine, and submitting proofs to Bitcoin L1.
Core Technologies
• Layered Virtual Machine (LVM) for multi-runtime smart contract execution.
• Fraud-proof ZK mechanisms for verifying off-chain computations.
• Flexible data availability for cost and security optimization.
Cross-Chain Interoperability
Connects BTC assets to ecosystems like Base, Starknet, Arbitrum, Sonic, and Plume.
Real Adoption
Velar builds a Bitcoin-native perpetual DEX on Bitlayer, leveraging deep computation with Bitcoin resilience.
Core Offerings
• Smart Contract Layer on Bitcoin (EVM, CairoVM support)
• Hybrid Optimistic + ZK Rollups
• Native BTC trustless bridge
• Flexible DA options for scalability
Technical Edge
• Bitcoin-level security without forking the protocol.
• Modular rollup blueprint adapted to BTC.
• Cross-chain integration with leading L2 ecosystems.
Innovations & Ecosystem Momentum
• Transitioning from sidechain model to true Bitcoin-native rollup.
• Growing developer adoption for DeFi, NFT, and gaming projects.
• Active hashrate and miner participation for execution security.
Why It Matters
For Developers
Brings Ethereum’s programmability to Bitcoin’s trust layer.
For Users
Unlocks $1.9T of Bitcoin capital for Web3 without compromising decentralization.
For the Industry
Bridges the gap between Bitcoin security and modern smart contract capabilities.