StaFi Protocol

StaFi Protocol is a multi-chain liquid staking platform that solves one of the core tensions in proof-of-stake networks: staked assets are locked and illiquid, forcing users to choose between earning staking rewards and participating in DeFi. StaFi's solution issues users a tradeable derivative token—called an rToken—for every asset they stake through the protocol, so they can hold, trade, or deploy their staking position while still accumulating rewards on the underlying asset.

Background

StaFi was founded in 2019 by Tore Zhang and Liam Young and is incorporated in the British Virgin Islands. The project launched with early backing from Woodstock and TGR Capital, and was originally built on Substrate—the same framework underlying Polkadot. StaFi's FIS governance token was first generated on September 7, 2020. The protocol initially focused on Polkadot-native assets before expanding to become a multi-chain liquid staking provider across Ethereum, BNB Chain, Cosmos, Solana, and other PoS networks.

The rToken System

The core mechanism is the rToken: a synthetic staking derivative minted in exchange for staked assets. When a user deposits, for example, SOL into StaFi's staking contract, they receive rSOL tokens. The rToken's exchange rate against the underlying asset increases over time as staking rewards accumulate, meaning rSOL is always redeemable for more SOL than was originally deposited. Because rTokens are standard transferable tokens, users can sell, trade, or use them as collateral in other protocols without waiting for an unbonding period.

Supported rTokens include rETH, rBNB, rSOL, rATOM, rDOT, and rMATIC, covering major PoS chains. All staking operations pass through audited contracts; the underlying assets are delegated to validators selected and monitored by the protocol.

Solana Integration: rSOL

StaFi's Solana product, rSOL, addresses a specific problem on Solana: staked SOL normally carries a roughly three-day cooldown before it can be unstaked. rSOL gives users immediate liquidity on their staked position by issuing a derivative token that can be traded at any time.

When a user deposits SOL through the rSOL application, StaFi's contracts delegate that SOL across multiple validators using an automated selection strategy. Validators are evaluated on uptime, commission rates, slashing history, and self-bond ratios. The protocol rebalances delegations each epoch, shifting stake away from low-performing validators and auto-redelegating from any validator that incurs a slashing event, though Solana's partial slashing mechanism was not fully deployed on mainnet at the time of rSOL's launch.

The staking commission on rSOL is a maximum of 20% of rewards, distributed between validators and StaFi's protocol treasury. Redemptions carry a 0.2% fee and take approximately five days to process. rSOL was updated to run natively on Solana mainnet in early 2024, removing the previous requirement to bridge through StaFiChain.

StaFi has also integrated with Solayer to enable SOL restaking through the rSOL product, allowing users to layer restaking rewards on top of base staking yield.

Liquid Staking as a Service (LSaaS)

StaFi 2.0 introduced Liquid Staking as a Service (LSaaS), a platform that enables other projects and developers to deploy their own liquid staking tokens or liquid re-staking tokens without building the staking infrastructure from scratch. LSaaS supports deployment across Ethereum, EVM-compatible networks, Bitcoin, Cosmos, and Solana. The platform provides the validator management, reward distribution, and smart contract scaffolding, while the deploying project controls branding and parameters.

AI Integration

In April 2025, StaFi announced Revamp Wave 2, rebranding its development direction from "Staking Finance" to "Staking AI Finance." The update introduced two AI-powered tools built on top of the existing LSaaS infrastructure:

• Staking Code Agent: Uses large language models to generate staking-related smart contract code from natural language inputs, lowering the technical barrier for developers building on LSaaS.
• Staking Assistant Agent: A conversational interface that lets users optimize staking yields, execute staking operations, and get personalized recommendations through dialogue rather than manual configuration.

The protocol also extended AI capabilities to validator selection, using real-time performance data to inform delegation decisions.

StaFiChain and the FIS Token

StaFiChain is a Substrate-based proof-of-stake blockchain that originally served as the settlement and relay layer for cross-chain rToken operations. It operates a Nominated Proof-of-Stake (NPoS) consensus model with approximately 160 active validators. StaFi Validators (SV) and StaFi Special Validators (SSV) participate in block production and signature verification for cross-chain relay functions.

The FIS token is StaFi's native utility and governance token. Its initial supply was 100 million, with annual inflation ranging from 2.5% to 10% depending on the network's staking participation rate, targeting a 50% staking ratio as the ideal. FIS is used to pay transaction fees on StaFiChain, to stake and participate in validator selection, and to vote in protocol governance.

In March 2025, StaFi proposed a phased inflation reduction: from 10% annually in early 2025, down to 6% in 2025, 2% in 2026, and reaching 0% by 2027. The proposal is part of a broader plan to eventually migrate StaFiChain to foundation or infrastructure management and convert the FIS token to ERC-20 or a comparable standard. FIS is listed on Coinbase, Kraken, and Uphold, and trades on Ethereum-based DEXs as an ERC-20 token.

Security and Audits

StaFi contracts have been audited by CertiK and PeckShield. The protocol maintains a long-term relationship with CertiK, which has reviewed the rBridge contract, the rBridge StaFiChain code, and the rToken relay code. StaFi also runs a bug bounty program through Immunefi, offering rewards to researchers who identify vulnerabilities in its smart contracts or infrastructure.

Ecosystem Traction and Partnerships

Reported peak metrics include approximately $34 million in staked ETH via rETH, 554 active validators across supported networks, and $100 million in total ecosystem TVL. StaFi has established technology partnerships with Chainlink for oracle data, Everclear for cross-chain interoperability, zkMe for privacy-preserving verification, and Vouch for staking infrastructure. The Solayer integration extends StaFi's Solana footprint into restaking.

As Solana's liquid staking market has grown competitive, StaFi's rSOL positions the protocol as one of the earlier multi-chain providers to support native Solana liquid staking, with a focus on automated validator management and cross-chain composability through its rToken framework.