---
title: State Channel
url: "https://www.unknowngravity.com/en/glosario/state-channel"
site: Unknown Gravity
published: "2025-06-07T15:36:56+00:00"
modified: "2026-07-30T15:43:02+00:00"
language: en-US
description: "A State Channel is a Layer 2 scalability solution that allows two or more participants to perform multiple interactions or transactions Off-chain (outside the main chain), recording on the blockchain…"
section: "Home > State Channel"
---

# State Channel

GLOSSARY · BLOCKCHAIN & WEB3

Off-chain private channel that allows multiple quick and cheap transactions before recording the result on the blockchain.

WHAT IS IT? · FOR DUMMIES

A **state channel** is like a private channel between two people who want to do a lot of operations without disturbing the blockchain all the time. Imagine playing cards with someone: instead of telling the blockchain every move, you do it in private and only tell them who won in the end. This way you save time and money.

WHAT IS IT? · PRO

A **State Channel** is a **Layer 2 scalability** solution that allows two or more participants to perform multiple interactions or transactions **Off-chain** (outside the main chain), recording on the blockchain only the **final state of the channel** when it closes. This approach dramatically reduces gas usage and improves processing speed by preventing each action from being executed directly on the main network.

The process begins with the opening of the channel, in which participants lock an amount of funds in an on-chain smart contract (for example, in Ethereum). From that moment on, they can exchange **cryptographically signed messages** which represent status updates, such as balance transfers, without the need to mine new blocks. Once their operations end, either party can close the channel, presenting the most recent and valid version of the state to the smart contract, which settles the final balances on the blockchain.

**State channels** can be unidirectional or bidirectional, and are applied in cases such as micropayments, games, betting, streaming payments, IoT, and other situations that require **high frequency and low cost transactions**. Although they share a common objective with other scalability solutions such as rollups or side chains, state channels differ in that they require **direct interaction between participants** and because they are more suitable for **finite sessions of interaction between a fixed set of users**.

Notable examples of implementation include the **Lightning Network** of Bitcoin and the **Raiden Channels** on Ethereum. Despite their performance advantages, state channels present challenges such as **the constant availability of participants**, **the need for vigilance against malicious closures** and **greater technical complexity** in its implementation and operation.

## 01 / Key points

- It's a Layer 2 solution for making a lot of transactions outside the blockchain
- Only the final state is recorded, not each individual operation
- Reduces gas costs and improves performance
- Requires participants to block funds at the start of the channel
- Ideal for micropayments, games, fast or repetitive interactions

## 02 / Advantages

- **Almost zero costs per transaction**, since most of it is done off-chain
- **Instantaneous speed** in interactions between participants
- **Improved privacy**, by not publishing every operation on the public broadcaster
- **Core network decongestion**, by avoiding unnecessary operations
- **High efficiency** for closed use cases between known users

## 03 / Disadvantages

- **Limited to specific participants**: not suitable for open interactions
- **Requires active availability**: Nodes must be online to prevent abuse
- **Operational complexity**: opening and closing the channel requires on-chain logic
- **Doesn't work for all use cases**: ideal for interactive sessions, not for open dApps
- **Risk of disputes** if participants try to close with a previous status

RELATED CONCEPTS

[Layer 2](/en/glosario/layer-2-capa-2) [Blockchain](/en/glosario/blockchain) [Smart contract](/en/glosario/smart-contract) [Proof of Stake (PoS)](/en/glosario/proof-of-stake-pos)

KEEP LEARNING

[Interoperability between blockchains: Why is it important?](/en/articulos/la-interoperabilidad-en-la-blockchain) [Comparison of smart contracts programming languages](/en/articulos/lenguajes-programacion-smart-contracts) [DeFi: What decentralized finance is and how does it work](/en/articulos/defi-que-son-como-funcionan-finanzas-descentralizadas) [How blockchain is revolutionizing electronic voting.](/en/articulos/como-blockchain-esta-revolucionando-la-votacion-electronica) [Which blockchain suits me? A clear comparison of Ethereum, Arbitrum and Base](/en/articulos/que-blockchain-me-conviene-comparativa-clara-entre-ethereum-arbitrum-y-base)

RELATED SERVICES

[Blockchain protocol development](/en/servicios/desarrollo-de-protocolos-blockchain) [DeFi protocols](/en/servicios/protocolos-defi) [Web3 Development](/en/servicios/desarrollo-web3) [Development of smart contracts](/en/servicios/company-development-smart-contracts) [Blockchain consulting for companies](/en/servicios/consultoria-blockchain)

[Full glossary](/en/glosario)

This entry is informative. It is not legal, tax or investment advice. The rules cited change: check the current version on [BOE](https://www.boe.es) and [EUR-Lex](https://eur-lex.europa.eu).