> For the complete documentation index, see [llms.txt](https://docs.vialabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vialabs.io/security/network-validator-intro.md).

# Network Validator Intro

VIA Labs' network validators are off-chain components that ensure secure and efficient cross-chain communication. They play a key role in verifying and relaying transactions between different blockchains.

### **What do they do?** 

* **Relay Transactions**: VIA Labs validators verify transactions on one blockchain and relay them to another, acting as intermediaries.
* **Security**: They ensure the accuracy and authenticity of transactions, maintaining the integrity of cross-chain operations.
* **Consensus Mechanism**: Validators follow specific rules to agree on transactions and resolve disputes, typically using Proof of Liquidity (PoL) or Proof of Authority (PoA). In this case, both instances are used. 
* **Decentralization**: Multiple validators enhance network resilience by preventing any single party from controlling the system.