VIA Labs

VIA Labs is a cross-chain communication infrastructure layer that enables smart contracts on any supported blockchain to exchange messages and transfer assets directly — without the token wrapping, liquidity pools, or bridge intermediaries that characterize most cross-chain solutions.

The Problem VIA Labs Solves

Blockchain ecosystems have historically been siloed. Moving assets between chains has meant relying on bridges that lock tokens on the source chain and mint synthetic representations on the destination, creating systemic risk from bridge hacks and fragmented liquidity. Smart contracts, meanwhile, have had no native way to communicate with contracts on other networks. VIA Labs addresses both problems with a single infrastructure layer: a network of validator nodes that relay authenticated messages between chains, letting contracts initiate actions and transfer value across network boundaries as though they were on the same chain.

How It Works

The core abstraction is the MessageClient — a Solidity package developers import into their smart contracts. By extending MessageClient and implementing standard message-handling functions, any EVM contract becomes cross-chain capable without a fundamental redesign of its architecture.

When a contract sends a cross-chain message, it is picked up by the VIA Network, a decentralized peer-to-peer node network that validates and relays the payload to the destination chain. The system uses a four-layer security model:

• VIA Layer — the infrastructure-level validators operated by the VIA Network itself
• Chain Layer — on-chain verification native to each supported network
• Project Layer — project-specific signing keys that let each integrating protocol enforce its own trust policies on top of the shared infrastructure
• PoL Layer — a Proof-of-Legitimacy validation step noted as an upcoming addition

Messages cannot be tampered with in transit. The protocol also includes automatic retry mechanisms for deliveries that fail due to transient network congestion. Under normal conditions, cross-chain delivery completes in a few seconds, bounded by the block times of the source and destination chains.

In addition to smart contract messaging, VIA Labs offers a Private Oracle capability that routes external data — from private APIs or off-chain databases — into on-chain contracts via the same P2P node layer. This makes VIA Labs useful not just for chain-to-chain interoperability but for connecting blockchains to real-world information sources without depending on public oracle networks.

Key Products and Features

Cross-Chain ERC20 Tokens: Developers can deploy native tokens that move between chains while preserving their original properties. Unlike bridged tokens that exist as IOUs on the destination chain, VIA's model keeps the token semantically consistent across networks.

Cross-Chain NFTs: The platform provides tooling to deploy NFT collections that transfer with full metadata preservation, making it practical to build marketplaces and gaming assets that span multiple chains.

Proto-USD: VIA Labs has developed Proto-USD as a cross-chain USDC integration for Avalanche L1s. It combines Avalanche's native Interchain Messaging (ICM) with Circle's Cross-Chain Transfer Protocol (CCTP), allowing any Avalanche L1 to receive USDC from Ethereum, Base, and other CCTP-enabled networks. Solana compatibility for Proto-USD is listed as forthcoming.

Quickstart Templates: The GitHub organization (github.com/VIALabs-io) publishes ready-to-use templates for cross-chain tokens, NFT collections, and private oracle integrations, targeting developers who want to add cross-chain functionality incrementally rather than rebuilding from scratch.

Developer Integration

Integration follows a package-based model. Developers install the VIA Solidity package, import MessageClient into their contract, implement the required send and receive functions, and register their contract on the networks they want to support. Gas fees on mainnet cover validation and relay execution; testnet deployments require only native tokens for gas and incur no protocol fees. The current supported network set encompasses 130+ public and private blockchains, with a primary focus on EVM-compatible chains.

Security and Audit Status

In February and March 2026, independent security firm Firepan conducted a review of VIA Labs' EVM v1 messaging stack. Of seventeen items surfaced, two were confirmed findings, both located in the _validateMessage function of ViaGatewayV1.sol:

• F-10 (Project-Layer Signer Scope Bypass): The validation logic failed to enforce project-specific scoping, meaning a signer registered for one project could satisfy the signature requirement for messages routed to an unrelated project — eroding the trust boundary between different protocol integrators on the network.
• F-11 (Disabled Signers Retain Authority): Signers that had been administratively disabled could continue authorizing cross-chain messages because the revocation mechanism did not structurally remove them from the active signer set.

Both findings were confirmed and patched within the same review cycle, with VIA Labs implementing inline fixes that Firepan subsequently reviewed and accepted. The full audit report is available at firepan.com/reports/vialabs-evm-v1.

Background

VIA Labs was founded in 2022. The team operates as a developer-focused infrastructure company, reachable at [email protected] and [email protected]. The project maintains an active open-source presence under the VIALabs-io GitHub organization with repositories covering the core contracts package, node infrastructure, and quickstart templates. Community support runs through a Discord server at discord.gg/vialabs.

Fit in the Solana Ecosystem

VIA Labs' current EVM-centric architecture means that Solana integration is on the roadmap rather than fully live. Solana is listed as a "coming soon" destination in the Proto-USD CCTP integration, which would allow Avalanche L1s and other CCTP-enabled chains to exchange USDC with the Solana network through the VIA relay layer. For Solana-native developers, VIA Labs represents cross-chain messaging infrastructure to watch as it extends beyond EVM, particularly for teams building applications that need to span Solana and the broader EVM ecosystem without taking on the complexity of bespoke bridge integrations.