Fiamma turns Bitcoin’s strength into DeFi power. The Bitcoin bridge powered by BitVM2 connects diverse ecosystems to Bitcoin in a trust-minimized and efficient manner. This enables securely minted, tokenized BTC backed directly by Bitcoin across multiple chains, including EVM, Aptos, and more.
11 chains supported on Day1
User Friendly Interface
The most trust-minimized bridging experience, Â with zero sacrifice in user experience.
How Fiamma Bridge Ensures Security
Non-custodial Bridging with BitVM2
Unlike other Bitcoin bridges that rely on centralized custodians or guardian networks, we enable Bitcoin itself to verify zero-knowledge proofs optimistically, making it the ultimate authority for bridging. This breakthrough unlocks Bitcoin programmability.
FiaBTC is 1:1 pegged to native BTC, secured by Bitcoin through zero-knowledge challenges, Taproot logic, and onchain fraud-proof resolution — allowing permissionless minting and redemption.
Isolated Safe Architecture™
Under Isolated Safe Architecture™, each user’s funds are secured in their own personal vault, jointly controlled by the user and the bridge committee—so even if the entire committee is compromised, your BTC remains safe, and stealing all assets would require breaching every user and every committee key, which is practically impossible.
Maximium Trust-minimization
We develop the smallest ZK verifiers in Bitcoin Script. With challenge transactions under 400KB, we eliminate reliance on specific mining pools for execution. We also enable permissionless challenge design to effectively reduce the 1-of-n trust assumption to near zero.
Battle-tested
Over 300,000 users have tested the Fiamma Bridge, powering over 6 million transactions across Ethereum, Solana, Monad, Bob, Plume, BNB chain and more. With growing volume flowing in, we're continuously optimizing for a smoother user experience.
