Questions about BTC.b, minting, redeeming, and how it compares to other Bitcoin assets.
BTC.b is a permissionless, decentralized representation of Bitcoin on multiple blockchains. Each BTC.b is backed 1:1 by native Bitcoin held through Lombard's security infrastructure.
Available on Ethereum, Avalanche, Solana, and more
Where did BTC.b come from?
BTC.b was originally created by Ava Labs for the Avalanche ecosystem in 2022. In October 2025, Lombard acquired BTC.b's infrastructure and assets to expand it into a multi-chain Bitcoin standard. All existing integrations and user balances were maintained.
Why use BTC.b instead of LBTC?
BTC.b is simpler. It maintains a pure 1:1 peg with Bitcoin, making it easier to:
Choose BTC.b if you want straightforward Bitcoin representation without yield complexity. Choose LBTC if you want to earn while holding.
BTC.b vs Other Bitcoin Assets
How does BTC.b compare to WBTC?
Via approved merchants only
How does BTC.b compare to cbBTC?
Can I convert between LBTC and BTC.b?
Not directly. You need to:
Redeem LBTC → native BTC (9 days)
Some DEXs may offer direct swaps depending on liquidity.
Minting & Redeeming
How do I mint BTC.b?
Choose your destination chain
Send BTC to the generated deposit address
Wait for confirmations (3-6 Bitcoin blocks)
BTC.b mints to your wallet
What is the minimum mint amount?
0.0002 BTC (subject to change). There is no maximum.
How do I redeem BTC.b for native BTC?
Enter your Bitcoin destination address
Confirm the burn transaction
Wait 6 hours for BTC to arrive
Why does redemption take 6 hours?
Security delays protect against potential issues. The process includes verification steps and coordination with the Security Consortium.
Can I cancel a mint or redemption?
Minting — Cannot be cancelled once BTC is sent to the deposit address
Redemption — Cannot be cancelled once the burn transaction is confirmed
What fees apply to BTC.b?
Compare this to WBTC's 0.25% minting and redemption fees.
Why does BTC.b have lower fees than WBTC?
Lombard operates on a decentralized model without intermediary merchants. This eliminates middleman fees while maintaining security through the consortium.
BTC.b uses Lombard's full security stack:
15-member Security Consortium — Including OKX, Galaxy, Kraken, DCG, and more
Hardware Security Modules — Keys never leave secure hardware
Chainlink Proof of Reserve — Independent verification of BTC backing
Multiple audits — OpenZeppelin, Veridise, Halborn
How can I verify BTC.b is fully backed?
Chainlink Proof of Reserve provides real-time verification that BTC.b supply is fully backed by native Bitcoin. You can check the reserve status on-chain.
Chains & Wallets
Which chains support BTC.b?
BTC.b is available on:
My wallet doesn't show BTC.b. How do I add it?
Add BTC.b as a custom token using the contract address for your chain. Most wallets auto-detect tokens after receiving them, but manual addition ensures visibility.
Check Smart Contracts for contract addresses. Check Smart Contracts for contract addresses.
Troubleshooting
I sent BTC but didn't receive BTC.b
Minting requires 3-6 Bitcoin confirmations. Check:
Bitcoin network congestion
Confirmation count on a block explorer
The Activity page in the Lombard app
I sent to the wrong address
If you sent to an incorrect address, funds cannot be recovered. Always verify addresses before sending. The deterministic address system encodes your destination details to help prevent errors.
Where can I get support?
