### What is Elastos?

Elastos (ELA) is the native coin of the Elastos ecosystem — a decentralised, Bitcoin-secured Web3 infrastructure designed to power the “SmartWeb,” where users retain full control over their digital identities, data, and assets. ELA is used for paying transaction fees (gas), staking in validator selection, and participating in governance via the Cyber Republic DAO. Elastos aims to address issues of centralisation, digital rights, and privacy through a multi-chain architecture, decentralised identity (DID) tools, and a secure runtime environment that isolates apps from the public internet.

### How does Elastos work?

Elastos operates as a multi-chain Web3 platform featuring a mainchain and specialised sidechains:

- **Mainchain**: Secured via **Auxiliary Proof of Work (AuxPoW)**, leveraging Bitcoin’s hashpower for enhanced security.
- **Sidechains**: Include the Ethereum-compatible **Elastos Smart Chain (ESC)** for smart contracts, and the **Elastos Identity Chain (EID)** for decentralised identifiers and verifiable credentials.

Elastos uses a unique **Elastic Consensus** mechanism combining:
- **AuxPoW**: Inherits security from Bitcoin miners.
- **Bonded Proof of Stake (BPoS)**: Users bond ELA tokens for up to ~1,000 days to gain voting rights for validator selection.
- **Proof of Integrity (PoI)**: Validator nodes are elected annually via the Cyber Republic DAO and participate randomly in block production.

Smart contracts run on ESC using Solidity, while identity and credential functionality is provided through EID. The platform also supports EVM compatibility and Bitcoin–Elastos Layer 2 (BeL2) integration for cross-chain applications.

### What are the potential use cases for Elastos?

Elastos supports a wide range of applications across multiple industries:

- **DeFi and Bitcoin-backed stablecoins**: The **BeL2 protocol** enables Bitcoin to serve as collateral for programmable stablecoins and DeFi products.
- **Decentralised Identity (DID)**: Self-sovereign IDs and verifiable credentials for individuals and organisations are managed through the EID chain.
- **Media, Gaming, and NFTs**: Enables digital rights management (DRM), in-game asset ownership, and NFT interoperability.
- **Web3 cloud services**: Elastos’ architecture integrates with traditional cloud services to support enterprise-grade decentralised apps.

Notable collaborations include:
- **Alibaba Cloud**: Supporting scalable infrastructure and validator deployment.
- **New Bretton Woods Labs**: Co-developing Bitcoin-backed stablecoin systems using BeL2.
- **Cyber Republic DAO**: Funding GameFi, NFT, and identity projects.

### What is the history of Elastos?

Elastos was founded by Rong Chen, a veteran software engineer focused on building a decentralised internet by combining blockchain with operating system principles. The project launched in 2018 with a successful token sale, and has since evolved into a comprehensive Web3 ecosystem.

Key milestones include:
- Development of a **multi-chain architecture** (Mainchain, ESC, and EID).
- Introduction of the **Elastic Consensus** mechanism.
- Strategic partnership with **Alibaba Cloud** for infrastructure and validator services.
- Launch of the **Bitcoin–Elastos Layer 2 (BeL2)** concept for programmable Bitcoin-backed assets.

Elastos has matured from an OS-inspired blockchain platform to a full SmartWeb stack, supporting identity, DeFi, GameFi, and enterprise Web3 use cases — with ELA at the core of staking, governance, and utility across its ecosystem.

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