Bitlayer
AuditedVerifiedBitlayer is a BitVM-based Bitcoin Layer 2 and trust-minimized cross-chain bridge whose YBTC family of assets (YBTC, YBTC.B) wraps native BTC for use across EVM and non-EVM DeFi.
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The Problem
Native Bitcoin earns no yield and cannot natively participate in smart-contract DeFi. Existing wrapped-BTC solutions rely on centralized custodians (wBTC) or complex federations with weaker security assumptions.
The Solution
Bitlayer's BitVM Bridge locks native BTC under a pre-signed transaction graph enforced on Bitcoin L1 and mints 1:1 YBTC on Bitlayer, Ethereum, and other chains. Security holds as long as one attesting-committee signer remains honest.
Why it Matters
First production BitVM-style trust-minimized BTC bridge. Locked BTC is verifiable on Bitcoin L1; redemption is enforceable via fraud proofs rather than trusting a custodian's solvency.
Protocol Metrics
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View allFrequently asked questions about Bitlayer
What is Bitlayer?+
Bitlayer is a Bridge protocol operating on Bitcoin, Bitlayer, Ethereum, Arbitrum, Base, Solana, Sui. Bitlayer is a BitVM-based Bitcoin Layer 2 and trust-minimized cross-chain bridge whose YBTC family of assets (YBTC, YBTC.B) wraps native BTC for use across EVM and non-EVM DeFi.
How does Bitlayer work?+
Bitlayer's BitVM Bridge locks native BTC under a pre-signed transaction graph enforced on Bitcoin L1 and mints 1:1 YBTC on Bitlayer, Ethereum, and other chains. Security holds as long as one attesting-committee signer remains honest.
Is Bitlayer safe?+
DeFi Sentinel rates Bitlayer A with a safety score of 72/100, indicating low-to-moderate risk. The score reflects five risk dimensions: smart contract & technical risk, economic design & market risk, governance & centralization, sustainability & competitive position, and reputation & social trust. Bitlayer has 3 audits on record. DeFi Sentinel's analysis flagged 1 high, 8 medium, 1 low risk alerts across Sustainability & Competitive Position, Smart Contract & Technical Risk, Economic Design & Market Risk, Governance & Centralization and Reputation & Social Trust. As with all DeFi protocols, residual risk remains and users should review the full risk breakdown before depositing.
What is the safety score of Bitlayer?+
Bitlayer has a DeFi Sentinel safety score of 72/100 (rating A), last updated May 21, 2026. The score is computed across smart contract & technical risk (30%), economic design & market risk (25%), governance & centralization (20%), sustainability & competitive position (15%), and reputation & social trust (10%).
Which chains does Bitlayer support?+
Bitlayer is deployed on Bitcoin, Bitlayer, Ethereum, Arbitrum, Base, Solana, Sui.
Has Bitlayer been audited?+
Yes. Bitlayer has 3 audit reports on record from firms including SlowMist, Hacken, DogScan (BTR Token). Audit reports and dates are linked under the Resources tab on this page.