### What is Stafi?

StaFi is a decentralised protocol designed to enhance liquidity within the blockchain ecosystem. It serves as a cross-chain, liquid staking derivatives platform for all Proof-of-Stake (PoS) chains. This enables users to stake PoS tokens and obtain liquid rTokens in return, which can still be traded while earning staking rewards. The native cryptocurrency of the StaFi blockchain is FIS, which is used for transaction costs, minting and redeeming rTokens, governance, and securing the network through staking.

### How does Stafi work?

StaFi operates over three key layers: the bottom layer based on Substrate blockchain, the contract layer supporting the creation of various staking contracts, and the application layer that facilitates third-party APIs or customised APIs to foster a decentralised bonded asset trading market for rTokens. Built on Substrate, it leverages the Nominated Proof-of-Stake (NPoS) consensus mechanism, allowing token holders to nominate validators. The protocol also incorporates secure multi-party computing, threshold multi-signing technologies, and smart contracts to manage staking processes and ensure the network's security.

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

StaFi's use cases are diverse:

1. **DeFi and Liquid Staking**: Enables liquid staking derivatives such as rTokens, allowing users to partake in financial activities like lending or borrowing while their assets continue to earn rewards.
   
2. **Cross-Chain Compatibility**: Supports multiple PoS blockchains like Ethereum, Polkadot, and Solana, facilitating its use across various ecosystems.
   
3. **Financial Services**: rTokens can be used as collateral for loans or to mint stablecoins, enhancing their utility in various financial applications.

StaFi’s integrations and collaborations, such as with the Polkadot ecosystem, further extend its applications within the blockchain and DeFi spaces.

### What is the history of Stafi?

StaFi was founded in 2018 by Young Liam, Tore Zhang, and DaJun. It emerged from Polkadot grants and was built using Substrate. Key milestones include the deployment of its Liquid Staking as a Service (LSAAS) testnet and a scheduled mainnet launch for StaFi 2.0. Originally focused on the Polkadot ecosystem, it is rebranding to offer liquid staking derivatives infrastructure across multiple blockchain networks. StaFi's market presence is growing, with significant adoption and active development enhancing its technological and commercial reach.

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