What is CKB?

Question

What is CKB?

Accepted Answer

## TLDR
Nervos Network (CKB) is a modular, Proof-of-Work blockchain designed as a secure base layer for scalable, interoperable applications, with a growing focus on expanding Bitcoin's capabilities.

1. **Layered Architecture** – It uses a dual-layer design: a secure PoW base layer for consensus and asset storage, and a computational layer for fast, scalable transactions.
2. **Bitcoin Layer 2 Vision** – The project has pivoted to become a foundational infrastructure for Bitcoin, enabling programmability and scalability through protocols like RGB++ and the Fiber Network.
3. **Storage-Backed Token Utility** – Its native token, the CKByte (CKB), represents one byte of storage space on the base layer, directly linking its utility and demand to network usage.

## Deep Dive
### 1. Purpose & Layered Architecture
Nervos Network aims to solve the blockchain trilemma—balancing security, decentralization, and scalability—through a novel dual-layer architecture. The base layer, called the **Common Knowledge Base (CKB)**, is a Proof-of-Work (PoW) blockchain that provides ultimate security and acts as a "common knowledge" repository for assets. A separate computation layer handles transaction processing, enabling high scalability without compromising the base layer's security ([CoinMarketCap]( https://coinmarketcap.com/currencies/nervos-network)). This design allows developers to build decentralized applications (dApps) that leverage robust security while achieving high throughput.

### 2. Technology & Bitcoin L2 Focus
Technologically, Nervos has evolved into a **Bitcoin-native Layer 2 solution**. Its core innovation is the **RGB++ protocol**, which uses a technique called homomorphic binding to securely attach Bitcoin UTXOs to states on CKB, enabling Turing-complete smart contracts for Bitcoin assets without relying on trusted bridges ([Binance News](https://www.binance.com/en/square/post/06-17-2025-interview-with-ckb-why-choose-to-build-a-slow-and-steady-bitcoin-world-25723617494241)). This is complemented by the **Fiber Network**, a Lightning Network-compatible payment layer for instant, low-cost transfers. Together, they form a stack to build a scalable Bitcoin DeFi (BTCFi) ecosystem.

### 3. Tokenomics & Unique Utility
CKB's tokenomics are intrinsically linked to the network's physical resources. Each **CKByte (CKB) token represents one byte of storage** on the CKB blockchain. To store data or deploy a smart contract, users must "lock" or occupy the corresponding amount of CKB tokens, creating a direct, utility-driven demand for the token tied to actual blockchain usage. The network also uses a dual-issuance model to ensure long-term miner incentives and security.

## Conclusion
Nervos Network is fundamentally a security-first, modular blockchain that has positioned itself as foundational infrastructure to bring programmability and scalability to Bitcoin. How will its vision for a user-sovereign "Web5" built on Bitcoin-native infrastructure evolve in the coming years?

What is Nervos Network (CKB)?

Deep Dive

1. Purpose & Layered Architecture

2. Technology & Bitcoin L2 Focus

3. Tokenomics & Unique Utility

Conclusion

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