Fusion Protocol enables zero-trust cross-chain atomic swaps between blockchain networks. Powered by ZK proofs and HTLCs.
SUPPORTED NETWORKS
THE PROTOCOL
Four steps. Two chains. Zero trust required.
Step 01
Declare your desired swap parameters: source chain, destination chain, token amounts. Your intent is cryptographically signed and submitted for on-chain validation.
Step 02
A ZK proof is generated using Circom circuits to verify your swap parameters without revealing sensitive data. The proof is verified on-chain before execution proceeds.
Step 03
HTLC contracts deploy on both chains simultaneously. Tokens are hash-locked and time-bounded, guaranteeing atomic execution. Either both sides complete or neither does.
Step 04
Both sides of the swap settle atomically. Tokens arrive in your wallet on the destination chain. The entire process completes in under a minute with full on-chain verification.
CAPABILITIES
Transfers complete on both ends at the same time, or automatically reverse.
Transaction details are protected until execution.
Transactions complete in seconds, not days.
Assets remain under user control throughout the transfer.
TRUST MODEL
Every component of Fusion Protocol is designed to eliminate trust assumptions. Cryptographic proofs and atomic contracts replace centralized intermediaries.
QUESTIONS
Fusion Protocol is a cross-chain atomic swap infrastructure that enables trustless token transfers between blockchain networks using zero-knowledge proofs and hash time-locked contracts (HTLCs). No bridges, no custodians -- just cryptographic guarantees.
Most swaps complete in under a minute. This is possible because Fusion leverages the fast block times of networks like Arbitrum and Base, combined with an efficient solver matching system.
Fusion uses Hash Time-Locked Contracts (HTLCs) which provide atomic guarantees -- either both sides of the swap complete, or both revert. If anything goes wrong, your funds are automatically returned after the timelock expires. Additionally, every swap is verified by zero-knowledge proofs before execution.
Currently, Fusion supports Arbitrum Sepolia and Base Sepolia testnets. We are actively building support for Midnight Network, Zircuit, Celo, and Optimism with architecture designed for any EVM-compatible chain.
No. Fusion is non-custodial and trustless by design. Your tokens never leave your control until the atomic settlement executes. All verification is done on-chain through smart contracts and ZK proofs -- no off-chain intermediaries.
Fusion Protocol enables a range of cross-chain applications: RWA settlement -- move tokenized real-world assets across chains without bridge risk. Cross-chain DeFi -- compose yield strategies and liquidity positions across multiple networks atomically. Multi-chain treasury management -- institutions can rebalance assets across networks in a single trustless flow. Chain-agnostic applications -- build products that operate seamlessly across any supported chain.
Fusion Protocol is live on testnet. Try a cross-chain swap in under a minute.