Lombard is the onchain bitcoin company. We make bitcoin productive, through LBTC, BTC.b, Bitcoin Smart Accounts, Bitcoin Earn, and the Lombard SDK. $5B onboarded. 70% market share in yield-bearing BTC. 10+ chains. These docs cover everything you need to use, build on, or integrate with Lombard.
Get Familiar with Lombard
Core concepts, architecture, and how Lombard works.
Products Overview
LBTC, BTC.b, vaults, and the Lombard SDK.
Protocol Architecture
Lombard Ledger, CubeSigner, and cross-chain infra.
Security Model
Institutional consortium members and hardware-backed keys.
Use LBTC
Stake BTC, earn yield, and deploy across DeFi.
Token Economics
BARD governance, staking, and Lux rewards.
Transparency
Proof of Reserve, smart contracts, and risk docs.
Build & Integrate
Developer tools and SDKs to build on Lombard.
Bitcoin Connect
Developer platform for integrating Bitcoin into any app.
The Lombard SDK
Deployment-ready toolkit for onchain Bitcoin products.
Support
Get help and troubleshoot common issues.