The decentralized finance (DeFi) landscape is undergoing a significant transformation with the official launch of Fusion+, 1inch’s groundbreaking cross-chain swap solution. No longer in beta, Fusion+ is now fully live across both the 1inch Wallet and 1inch dApp, offering users seamless, secure, and efficient token swaps across multiple blockchain networks — all while maintaining full self-custody of their digital assets.
This milestone marks a pivotal shift in how users interact with multi-chain ecosystems, eliminating the friction, delays, and security risks traditionally associated with cross-chain transactions.
What Is Fusion+?
Fusion+ is an advanced cross-chain swap protocol developed by 1inch to simplify multi-network asset transfers. Unlike conventional bridge-based solutions that require users to lock, mint, and unlock tokens across chains — often exposing them to smart contract vulnerabilities and liquidity fragmentation — Fusion+ leverages intent-based architecture and atomic swap technology to execute trustless, end-to-end transactions.
By removing reliance on third-party bridges, Fusion+ ensures that users never relinquish control of their funds during the swap process. Instead, the system coordinates transaction logic across chains in a way that guarantees either full completion or safe rollback — no in-between states, no lost funds.
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Why Fusion+ Changes the Game for DeFi Users
Since its beta release on September 18, 2024, Fusion+ has processed millions of dollars in trading volume, demonstrating strong market adoption and reliability. The protocol supports swaps across major Layer 1 and Layer 2 blockchains, including Ethereum, Arbitrum, Optimism, Polygon, Base, and others — enabling users to move assets like USDT, ETH, DAI, and more with optimal pricing and minimal slippage.
Key advantages include:
- No bridges required: Avoid exposure to bridge-specific exploits and downtime.
- Self-custody preserved: Your private keys stay with you at all times.
- Optimal rates: Powered by 1inch’s aggregation engine, Fusion+ finds the best available prices across decentralized exchanges.
- Atomic execution: Transactions are all-or-nothing — reducing failed swaps and gas waste.
- User-friendly interface: Integrated directly into existing 1inch products with no extra setup.
How to Use Fusion+ in the 1inch Wallet
Using Fusion+ is as simple as performing a standard token swap — but with cross-chain capabilities built in. Here’s how it works:
Step 1: Select Your Source Token
Begin by choosing the token you’d like to swap. Whether it’s USDC on Ethereum or WETH on Arbitrum, the wallet displays your available balances across connected networks.
Step 2: Choose Source and Destination Networks
You can select a specific network or opt for “All networks” to view consolidated balances. This helps you decide where to initiate the swap from based on availability and gas costs.
Step 3: Pick Your Target Token and Chain
Now choose what you want to receive and on which chain. For example, you can swap USDT on Ethereum for DAI on Polygon directly within the app.
The interface will display key details such as:
- Estimated received amount
- Minimum receivable after slippage
- Transaction time estimate
- No additional network fees charged by 1inch
Important: Keep the 1inch Wallet app open until the transaction is fully confirmed. Since Fusion+ uses intent-based validation and atomic coordination, closing the app prematurely may result in order cancellation. Once verified, the process runs automatically to completion.
👉 Experience fast, secure cross-chain swaps without leaving your wallet.
Seamless Integration in the 1inch dApp
Fusion+ isn’t limited to mobile users — it's also fully functional within the 1inch dApp (decentralized application). Web users can now perform cross-chain swaps directly through their browser wallets (such as MetaMask or WalletConnect), following the same intuitive flow:
- Connect your wallet
- Select source and destination tokens and chains
- Review quote and initiate swap
- Keep the tab open until final confirmation
No new permissions, no complex approvals — just a smooth, automated experience powered by cutting-edge DeFi infrastructure.
Core Benefits for Everyday Traders and Institutions
Fusion+ addresses some of the most pressing pain points in multi-chain DeFi:
| Pain Point | How Fusion+ Solves It |
|---|---|
| Bridge security risks | Eliminates bridges entirely using atomic coordination |
| High slippage on small-cap tokens | Aggregates liquidity across chains and DEXs |
| Fragmented user experience | Unified interface for intra- and cross-chain swaps |
| Loss of custody | Full self-custody maintained throughout |
For retail traders, this means safer access to yield opportunities across chains. For institutional players and DeFi power users, it enables efficient capital allocation without compromising on security or control.
Frequently Asked Questions (FAQ)
Q: Is Fusion+ available on both mobile and desktop?
A: Yes. Fusion+ is fully integrated into the 1inch Wallet (iOS and Android) and the web-based 1inch dApp.
Q: Do I need to pay extra fees for cross-chain swaps?
A: 1inch does not charge additional fees for Fusion+ swaps beyond standard protocol costs. You only pay gas on the source chain.
Q: Can I swap any token between any two chains?
A: Support depends on token availability and liquidity on both ends. Popular assets like stablecoins and ETH are widely supported across major networks.
Q: What happens if the network becomes congested during a swap?
A: Thanks to atomic design, the transaction will either complete successfully or revert safely — your funds won’t get stuck mid-swap.
Q: How is self-custody ensured during cross-chain transfers?
A: Fusion+ uses cryptographic intent verification and decentralized relayers to coordinate swaps without ever requiring you to deposit funds into an intermediary contract.
Q: Are there any transaction size limits?
A: There are no hard caps, but large trades may experience higher slippage depending on cross-chain liquidity depth.
The Future of Cross-Chain DeFi
With Fusion+ now out of beta, 1inch solidifies its position as a leader in next-generation DeFi innovation. As blockchain ecosystems continue to proliferate, solutions like Fusion+ will become essential infrastructure for a truly interconnected digital economy.
By prioritizing security, usability, and decentralization, 1inch is helping users navigate the complexity of multi-chain environments with confidence — whether they're seasoned traders or newcomers exploring DeFi for the first time.
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Final Thoughts
The launch of full cross-chain swap functionality via Fusion+ represents more than just a feature update — it's a redefinition of what's possible in decentralized finance. By removing bridges, preserving custody, and delivering seamless user experiences, 1inch is setting a new standard for secure, scalable cross-chain interactions.
As adoption grows and more assets become accessible across networks, tools like Fusion+ will play a central role in shaping a unified, open financial future.
Core Keywords: cross-chain swap, DeFi, Fusion+, 1inch Wallet, atomic swap, self-custody, blockchain interoperability, intent-based architecture