• Index
  • Resources
  • NewNewest
  • +Submit
    • Submit New...
    • Index
    • Resource
    +
  • Interchain info © 2025

  • All
  • Index
  • Resources
Across Protocol
Across Protocol

Across Protocol

BridgesTrustless

Across is a cross-chain bridge protocol leveraging an intents-based architecture to provide fast, cost-effective, and secure interoperability between various blockchain networks. It optimizes gas costs, minimizes user risk by transferring it to relayers, and supports a wide range of chains including Ethereum, Polygon, and Arbitrum.

Overview

Across is an innovative cross-chain bridge protocol designed to facilitate rapid, low-cost transfers of value between different blockchain networks. Utilizing an intents-based architecture, Across stands out for its ability to offer the fastest and most economical cross-chain transactions without compromising security. This approach shifts execution risk from users to relayers, ensuring a more secure and efficient bridging process.

Architecture and Functionality

Intents-Based Design

At the core of Across’s functionality is the concept of cross-chain intents. These intents act as limit orders combined with specific actions to be executed upon fulfillment. The system comprises three key components:

  1. Request for Quote (RFQ) Mechanism: Users submit their cross-chain intents through this mechanism, specifying the desired transfer and associated actions.
  2. Relayer Network: Competitive relayers fulfill these intents using their own capital, ensuring the best possible execution for users.
  3. Settlement Layer: This layer verifies the fulfillment of intents and manages repayments to relayers. Utilizing UMA’s Optimistic Oracle, the system ensures accuracy and security in the verification process.

Gas Optimization

One of the standout features of Across is its focus on gas optimization. By aggregating and verifying intents off-chain, Across significantly reduces gas costs, making it a highly economical choice for cross-chain transfers. This aggregated verification process occurs over a 1-2 hour period, spreading the cost over thousands of transactions and ensuring minimal gas fees per transaction.

Products and Integrations

Across Bridge

The Across Bridge is the protocol’s flagship product, providing end-users with the fastest and lowest-cost method to move value across chains. This product is integrated into various applications through a simple REST API, allowing developers to embed cross-chain transfers seamlessly within their dApps.

Across+

Across+ enhances the protocol by bundling bridge actions with other protocol operations, promoting seamless user onboarding and interaction. This tool abstracts the bridging process, enabling users to engage with dApps without needing to understand the underlying cross-chain mechanics.

Across Settlement

The Across Settlement layer is a modular settlement solution that supports cross-chain intents. Its design allows for the flexible and efficient settlement of intents across various chains, reducing overhead for relayers and ultimately lowering costs for end-users.

Security and Performance

Security Measures

Across’s architecture is built with a strong focus on security. By transferring execution risk to relayers and employing UMA’s Optimistic Oracle for verification, the protocol ensures that users are protected from common risks associated with cross-chain transfers. Relayers are compensated only after successful and verified fulfillment of intents, further bolstering security.

Performance Metrics

Across is empirically proven to be the fastest and most cost-effective cross-chain bridge. With an average fill time of under one minute and costs as low as one dollar per ETH bridged, Across sets a high standard for performance in the interoperability space.

Supported Chains

Across supports a wide range of blockchain networks, including but not limited to:

  • Ethereum Mainnet
  • Polygon
  • Arbitrum
  • Optimism
  • zkSync Era
  • Base
  • Linea
  • Mode
  • Blast
  • Scroll
  • Lisk

This extensive support ensures that users can transfer value across most major chains with ease and efficiency.

Community and Ecosystem

Across is backed by a vibrant community and trusted by top-tier applications. The protocol’s integration into various DeFi platforms and dApps highlights its versatility and reliability. Community members are encouraged to participate in governance and provide liquidity, further strengthening the protocol’s ecosystem.

CONTENTS

  • Overview
  • Architecture and Functionality
  • Products and Integrations
  • Security and Performance
  • Supported Chains
  • Community and Ecosystem

Interchain Info

Support ICI

Premium Services
Send feedback
Stake with our Partner

Social

Twitter
Discord
Telegram

Links

Terms of Service
Privacy Policy
Documentation

Spark Family

Spark IBC
Airdrops

Interchain info © 2025

Resources

  • Introducing Agoric Orchestration

    Introducing Agoric Orchestration

    Orchestration is the key to Agoric providing an frictionless multi-chain building experience.

    Feb 13 · 6 min read
  • Cosmos’ Continued Dive Into LSD-fi With pStake Finance | Prop #853 Overview

    Cosmos’ Continued Dive Into LSD-fi With pStake Finance | Prop #853 Overview

    Proposal 853 marks a key step in Cosmos’ DeFi expansion and AEZ growth, focusing on ATOM liquid staking.

    Dec 21 · 3 min read
  • dYdX Chain’s Transition to Cosmos SDK & Integration with CCTP

    dYdX Chain’s Transition to Cosmos SDK & Integration with CCTP

    dYdX migrates from Ethereum to Cosmos SDK, integrating CCTP on Noble for seamless USDC transfers, potentially reshaping DeFi’s future.

    Nov 16 · 3 min read

Related Bridges Indexes

  • Transporter (CCIP)

    Transporter (CCIP)
    Featured
    Verified

    Bridging tokens across blockchains with unmatched security and ease. Powered by CCIP.

    Trustless
  • IBC.fun

    IBC.fun
    Featured
    Verified

    The easiest way to get from token A on chain X, to token B on chain Y.

    Bridges
  • zk.Link

    zk.Link
    Featured
    Verified

    zkLink: Pioneering multi-ZK-Rollup Layer 3 network for seamless, efficient trading and DeFi innovation on Ethereum.

    Bridges
  • AllBridge | Core & Classic

    AllBridge | Core & Classic
    Featured
    Verified

    Bridging Blockchains with Seamless Stablecoin Swaps

    Trustless
  • Shogun Finance (Gundotfun)

    Shogun Finance (Gundotfun)
    Featured
    Verified

    Integration layer unifying multiple blockchains into a single application layer.

    Trustless
  • Ark Protocol

    Ark Protocol
    Featured
    Verified

    Pioneering InterChain NFTs across Cosmos and beyond, Ark Protocol facilitates seamless NFT interactions, expanding to Ethereum and other networks.

    Collections