Infrastructure

Lombard’s infrastructure layer provides the security, bridging, oracle, and developer tools that power the protocol. At its core is the Security Consortium — a distributed trust network of leading digital asset institutions that governs all critical operations.

The Security Consortium is a network of 15 independent institutional members that collectively operate the Lombard Ledger, a transparent verifiable blockchain. Every critical protocol operation — deposits, mints, redemptions, and cross-chain transfers — requires cryptographic signatures from a supermajority of consortium members before execution.

LBTC and BTC.b are natively available across multiple blockchains. Lombard’s bridging infrastructure enables secure cross-chain transfers through a dual verification model requiring approval from both bridge validators and the Security Consortium.

Lombard uses oracle infrastructure to provide transparent, verifiable data about protocol reserves and asset pricing. Chainlink Proof of Reserve feeds update every 10 minutes, and price feeds are provided through partnerships with Chainlink and RedStone.

Bitcoin Connect is Lombard’s builder platform for integrating Bitcoin functionality into applications. Connect provides the infrastructure for staking flows, redemptions, cross-chain transfers, and portfolio tracking.

Bitcoin Smart Accounts (BSA) are the rail that connects institutional custody to onchain finance. A Smart Account designation is added to an existing custody account, and the held BTC is recognized onchain as a BTC.b receipt token. The underlying Bitcoin never leaves qualified custody.

Security Consortium

Governance Model

The Consortium operates under a two-thirds supermajority requirement. At least 10 of the 15 members must sign off on any critical operation. This means that even if five members were compromised simultaneously, no unauthorized action could be taken. The threshold ensures both security (high bar for approval) and liveness (the protocol continues operating if a minority of members are temporarily unavailable).

Consortium Members

The 15 members represent diverse segments of the digital asset industry, providing organizational, geographic, and operational diversity:

OKX

Global cryptocurrency exchange

Galaxy

Institutional digital asset firm

DCG

Digital asset investment conglomerate

Kraken

Regulated cryptocurrency exchange

Wintermute

Algorithmic market maker

Amber Group

Digital asset trading and technology

Antpool

Major Bitcoin mining pool

F2Pool

One of the oldest Bitcoin mining pools

Figment

Institutional staking provider

Kiln

Enterprise staking infrastructure

P2P.org

Non-custodial staking platform

Chorus One

Institutional staking and infrastructure

Cubist

Cryptographic security and HSM technology

Informal Systems

Protocol verification and formal methods

Nansen

Blockchain analytics and intelligence

Membership Requirements

Joining the Consortium requires infrastructure deployment, KYB (Know Your Business) review, a network-wide vote from existing members, and smart contract updates to add the new member’s signing keys. This process ensures every member meets the protocol’s security and operational standards.

Cross-Chain Bridging

Dual Verification

Every cross-chain transfer requires approval from two independent systems:

Bridge Validators — The bridge infrastructure (Chainlink CCIP, LayerZero, or IBC) validates the transfer on its own
Security Consortium — The Consortium independently verifies and co-signs the transfer

Both must agree before a transfer completes. This means an attacker would need to compromise both the bridge infrastructure and a supermajority of the Consortium simultaneously — a significantly higher bar than either system alone.

Bridge Partners

Lombard integrates with multiple bridging solutions to support its cross-chain footprint:

Chainlink CCIP — Primary bridge for EVM-compatible chains
LayerZero — Additional cross-chain messaging layer
IBC (Inter-Blockchain Communication) — Used for Cosmos-ecosystem chains
Native Consortium Bridge — Direct Consortium-verified transfers for select routes

Oracles

Proof of Reserve

Chainlink Proof of Reserve feeds update every 10 minutes to confirm that LBTC and BTC.b maintain full backing by native Bitcoin. These feeds are on-chain and independently verifiable by anyone.

Price Feeds

Oracle price feeds provide the LBTC/BTC exchange rate and BTC.b/BTC parity data to DeFi protocols. Accurate price data is essential for lending markets, DEX pricing, and liquidation mechanisms that integrate LBTC and BTC.b.

Feeds are updated every 10 minutes and are provided through partnerships with Chainlink and RedStone.

Bitcoin Connect

Lombard SDK

The Lombard SDK is a complete, deployment-ready toolkit within Bitcoin Connect for launching onchain Bitcoin products and strategies. It provides:

Staking integration — Embed LBTC minting and redemption flows
Cross-chain transfers — Bridge LBTC and BTC.b across supported networks
Portfolio tracking — Monitor positions, yield accrual, and transaction history
Strategy deployment — Build and launch Bitcoin DeFi strategies

Bitcoin Smart Accounts

Bitcoin Smart Accounts (BSA) extend Lombard’s infrastructure to institutional Bitcoin holders. A Smart Account designation is layered onto an existing custody account at a qualified custodian, and the held BTC is recognized onchain through a BTC.b receipt token. The underlying Bitcoin remains with the custodian at all times, and full legal title and beneficial ownership stay with the holder.

How It Differs from Direct Deposits

With BSA, institutions get DeFi access without transferring assets, surrendering control, or triggering tax events. Each Smart Account is fully isolated, and positions are managed onchain with full transparency.

The architecture uses partially signed Bitcoin transactions (PSBTs) and time locks to form emulated covenants, enabling programmable locking on Bitcoin without changing the custody arrangement.

Integrations

The first integration is with Morpho, where custodied BTC can be used as collateral to borrow stablecoins or earn yield on supplied BTC.b. A strategic partnership with Bitwise Asset Management extends BSA to additional institutional holders, with more custodians and protocols rolling out throughout 2026.

For a full overview of the product, see Bitcoin Smart Accounts.

Next Steps

Assets — Deep dive into LBTC and BTC.b
Yield — How yield works and where it comes from
Security Model — Full security architecture and audit history
Bridging Architecture — Detailed bridging mechanics and supported chains