Use BTC.b
Bring your Bitcoin on-chain without KYC, custody risks, or yield complexity. BTC.b is a 1:1 Bitcoin representation that works across multiple blockchains, permissionless, decentralized, and always redeemable for native BTC.
What You Get
When you mint BTC.b, you receive a token backed 1:1 by native Bitcoin held through Lombard's security infrastructure:
No yield (simpler than LBTC)
No KYC required
0% minting fee
Available on Monad, Stable and Katana
Redeemable for native BTC at any time (6 hours withdrawal period)
BTC.b is ideal if you want straightforward Bitcoin representation without the complexity of yield-bearing tokens.
BTC.b vs LBTC
Yield
No
Yes (~0.81% APY)
Exchange rate
Always 1:1
Increases over time
Use case
Simple BTC representation
Earn while holding
Minting fee
0%
0% (Ethereum has gas fee)
Redemption fee
0.0001 BTC
0.0001 LBTC
Redemption time
6 hours
7-9 days
Choose BTC.b for maximum simplicity, lowest fees, and active DeFi participation where you control yield strategies.
Choose LBTC for passive yield generation and long-term holding.
Many users hold both.
Mint BTC.b
You can mint from any Bitcoin wallet, hardware wallets, DeFi wallets, or exchanges that allow BTC withdrawals.
Before You Start
You need native BTC in a wallet that can send to SegWit addresses
Choose which chain you want to receive BTC.b on
Have a wallet address ready on your destination chain
Steps
Go to the Lombard app
Select BTC.b minting
Connect your destination wallet
Connect with your destination chain
Lombard generates a unique deposit address tied to your destination
Send BTC to that address
Wait for 3-6 Bitcoin confirmations
BTC.b mints automatically to your destination address
Fees
Minting fee
0%
Bitcoin network fee
~$2-20 (varies)
Destination chain gas
Varies by chain
Typical gas fees:
Avalanche: <$1
Solana: <$0.01
Ethereum: $5-50
Minimum Deposit
0.0002 BTC (subject to change). There is no maximum.
Can I Cancel a Mint?
No. Once BTC is sent to the deposit address, the mint cannot be cancelled. Always verify addresses before sending.
Redeem BTC.b
You can withdraw your native BTC at any time. The process takes 6 hours due to security verification and coordination with the Security Consortium.
Before You Start
You need BTC.b on any supported chain
Have a Bitcoin address ready (Native SegWit or Taproot)
Supported Bitcoin Addresses
bc1q
Native SegWit (P2WPKH, P2WSH)
Yes
bc1p
Taproot (P2TR)
Yes
1...
Legacy (P2PKH)
No
3...
Nested SegWit (P2SH)
No
Steps
Go to the Lombard app
Select BTC.b redemption
Enter the amount of BTC.b to redeem
Enter your Bitcoin withdrawal address
Confirm the burn transaction
Wait 6 hours for BTC to arrive
Fees
Redemption fee
0.0001 BTC
Gas fee
Varies by chain
Can I Cancel a Redemption?
No. Once the burn transaction is confirmed, the redemption cannot be cancelled.
Bridge BTC.b Between Chains
BTC.b can be moved between supported chains using Chainlink CCIP through the Lombard app.
Steps
Go to the Lombard app
Select bridge
Choose source and destination chains
Enter the amount
Confirm the transaction
Wait 10-30 minutes depending on chains involved
Security
BTC.b uses Lombard's full security stack:
Security Consortium
15 independent institutions validate all operations
CubeSigner (HSM)
Keys stored in hardware, never exposed
Bascule Drawbridge
Secondary verification for all mints
Chainlink Proof of Reserve
Real-time verification of BTC backing
Chainlink CCIP
Secure cross-chain messaging
Members include OKX, Galaxy, DCG, Wintermute, Figment, Kiln, Antpool, F2Pool, and Kraken.
Every mint and redeem requires majority consensus among validators.
Verify Reserves
Check Chainlink's Proof of Reserve feeds, which update every 10 minutes, to verify BTC.b is fully backed: Proof of Reserve.
History
BTC.b was created by Ava Labs in 2022 for the Avalanche ecosystem. At acquisition (October 2025), it had approximately $550M in circulation and deep DeFi integrations.
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, token addresses remain unchanged.
Next Steps
BTC.b FAQ — Common questions
Access DeFi — Use BTC.b across protocols
Last updated