The blockchain ecosystem is rapidly evolving into a complex multichain landscape, where seamless interoperability is no longer optional—it's essential. With the launch of Across V3, developers now have access to the industry’s first intents-based interoperability protocol, engineered to deliver Web2-grade user experiences without compromising on security or decentralization.
Across V3 redefines cross-chain interaction by transforming the bridge from a simple asset transfer tool into a modular, composable engine for intent fulfillment. Built on years of real-world performance and battle-tested infrastructure, V3 empowers dApps to offer native cross-chain functionality with minimal friction.
The Evolution of Across: From Bridge to Interoperability Platform
Since its initial launch in October 2021, Across has consistently delivered fast, secure, and low-cost cross-chain transfers. With V2 in 2022, the protocol solidified its position as a top-tier bridging solution—trusted by users and aggregators alike for its reliability and efficiency.
Now, Across V3 takes this foundation and expands it into a full-stack interoperability platform. Instead of treating bridging as a standalone service, V3 deconstructs the process into modular components:
- A request-for-quote (RFQ) system for intent-based orders
- A decentralized network of third-party relayers with off-chain liquidity
- An optimistic settlement layer for secure, cost-efficient finality
This modular architecture allows developers to integrate only the components they need, enabling flexible, scalable, and secure cross-chain experiences.
👉 Discover how to build seamless cross-chain experiences with cutting-edge intent architecture.
Across+: Enable True Chain Abstraction for Your DApp
One of the biggest UX hurdles in Web3 is the need for users to manually bridge assets before interacting with a dApp on another chain. This friction often leads to lost users and abandoned transactions.
Across+ solves this by introducing cross-chain bridge hooks—a chain abstraction layer that allows your dApp to interact with user funds across chains as if they were already on your home chain. Users can perform actions like staking, swapping, NFT purchases, or lending—all triggered by a single wallet signature.
No more:
- Multi-step bridging
- Chain-switching
- Waiting for confirmations
With Across+, your dApp can:
- Accept deposits from any chain instantly
- Execute complex cross-chain actions atomically
- Maintain a clean, Web2-like interface
This means developers no longer have to choose between deploying across multiple chains (costly and fragmented), locking into proprietary standards (limiting flexibility), or restricting access to a single chain (limiting reach).
Instead, they can build single-chain dApps that serve a multichain user base—without tradeoffs.
How It Works
- A user initiates an action (e.g., "Stake ETH on Optimism") from your dApp’s interface.
- Your dApp submits an intent order via Across+.
- A relayer fulfills the intent instantly—bridging ETH from Ethereum to Optimism and staking it.
- Final settlement occurs optimistically on mainnet.
All of this happens behind the scenes, delivering a seamless experience that keeps users engaged.
👉 Unlock multichain user growth with frictionless cross-chain execution.
Across Settlement: The First Modular Intents Settlement Layer
While Across+ focuses on enhancing dApp UX, Across Settlement opens up the protocol’s powerful backend to other applications.
Across Settlement is the first modular settlement layer designed specifically for intents-based order flow. It allows any DEX or DeFi application with RFQ-style order systems to leverage Across’s global network of professional market makers for optimal cross-chain execution.
Key benefits:
- Best-price execution: Tap into deep liquidity from a competitive relayer network
- Cost-efficient batching: Multiple settlements consolidated into one low-cost message
- Optimistic verification: Secure and scalable finality model requiring only one honest validator
This means even non-Across-native apps can offer fast, low-cost cross-chain swaps without building their own relayer infrastructure.
Use Cases
- DEXs offering cross-chain swaps without native bridges
- Lending protocols enabling deposits from any chain
- Yield aggregators automating cross-chain strategies
By decoupling settlement from execution, Across enables a new level of composability in the multichain era.
Optimistic Verification: Balancing Speed, Cost, and Security
At the heart of Across V3’s efficiency is optimistic verification—a trust-minimized mechanism that ensures security without sacrificing speed or cost.
Here’s how it works:
- User intents are fulfilled immediately by relayers off-chain.
- Settlement occurs later, batched with other transactions.
- Anyone can challenge an invalid settlement within a dispute window.
- Only one honest actor is needed to maintain system integrity (per Vitalik Buterin’s “one honest actor” model).
This design relaxes the traditional blockchain trilemma:
- Speed: Users get instant execution
- Cost: Batched messages reduce on-chain fees
- Security: Dispute mechanisms protect against fraud
As a result, Across delivers high throughput and low latency while maintaining Ethereum-level security guarantees.
Across Bridge: Faster, Cheaper, Smarter
The core Across Bridge also receives major upgrades in V3:
- Lower fees: Improved liquidity incentives reduce costs on hard-to-service chains
- RFQ-powered swaps: Coming soon—cross-chain swaps with best-price routing
- Gasless swaps: Future support for user-paid gas in destination tokens
These enhancements build on Across’s proven track record as one of the most recommended bridges by leading aggregators—now with even greater efficiency.
No More UX Compromises: The Future Is Intent-Based
The multichain future is here. But fragmentation threatens adoption unless we solve for usability.
Across V3 answers this challenge by shifting from transaction-centric models to intent-driven interoperability. Instead of forcing users to understand chains, bridges, and gas fees, the system works on their behalf to fulfill their goals—quickly, securely, and invisibly.
With Across+, developers gain tools to abstract away complexity. With Across Settlement, protocols gain access to efficient, trust-minimized settlement. And with the upgraded bridge, end users enjoy faster, cheaper transfers than ever before.
Together, these components form a unified platform where:
- Developers ship better products faster
- Users enjoy seamless experiences
- The ecosystem becomes more composable and resilient
Frequently Asked Questions (FAQ)
Q: What does "intents-based" mean in practice?
A: Instead of specifying exact transactions (e.g., “Bridge 1 ETH from Ethereum to Arbitrum”), users declare their intent (e.g., “I want 1 ETH on Arbitrum”). The system figures out the optimal way to fulfill it.
Q: Is Across V3 secure?
A: Yes. It uses optimistic verification secured by economic incentives and public dispute mechanisms. Its two-year production history demonstrates strong security under real-world conditions.
Q: Can any dApp integrate Across+?
A: Absolutely. Any dApp can integrate Across+ via SDKs and APIs to enable cross-chain functionality with minimal code changes.
Q: How does Across differ from other bridges?
A: Most bridges are transaction-based and require manual user steps. Across is intent-first, modular, and designed for developer integration—making it a full interoperability platform, not just a bridge.
Q: Do users need to trust relayers?
A: No. Relayers front liquidity but cannot steal funds. Settlement is verified on-chain, and fraudulent behavior can be challenged.
Q: What chains does Across support?
A: Across supports major EVM chains including Ethereum, Arbitrum, Optimism, Polygon, Base, and more—with ongoing expansion.
Across V3 marks a turning point in blockchain interoperability. By embracing intents as the foundational primitive, it enables a future where dApps are truly chain-agnostic and users never need to think about infrastructure.
Whether you're building the next-gen DeFi protocol or launching an NFT marketplace, Across gives you the tools to go multichain—without compromise.
👉 Start building with the most advanced intents-based interoperability platform today.