Hubra

Hubra is a Solana staking and DeFi yield platform backed by a validator that has operated continuously since 2020. Its core proposition is bringing the convenience and coherence of a centralized exchange interface to fully self-custodial, on-chain activity — expressed in its tagline: "The power of CEX, the freedom of DeFi."

Background

The project launched under the name SolanaHub, with its original liquid staking token trading as HUBSOL. It subsequently rebranded to Hubra, renaming the token raSOL. The Hubra validator (vote account 7K8DVxtNJGnMtUY1CQJT5jcs8sFGSZTDiG7kowvFpECh) has not missed an epoch since 2020, giving it one of the longest continuous uptime records among independent Solana validators. The codebase is fully open-source on GitHub, and the team actively participates in Solana governance — voting YES on both SGP-0002 and SGP-0003, the proposals to reduce staking issuance and introduce fee burns tied to network usage. Stakers retain the ability to override Hubra's governance vote at any time through the Solana governance portal.

Problem

DeFi on Solana has historically fragmented the user experience: managing native stakes, liquid staking tokens, stablecoin yield, and protocol governance across a half-dozen apps creates friction for newcomers and overhead for experienced users. Hubra centralises these actions in one interface without surrendering self-custody, while also making the same capabilities accessible to autonomous AI agents and software bots through a plain HTTP API.

Products

Native Staking

Users can delegate SOL directly to the Hubra validator while retaining full custody in their own wallet. Yield accrues per epoch — roughly every 2.5 days — based on network issuance distributed pro-rata to active stake after validator commission. There is no protocol wrapper, no lockup beyond the standard Solana deactivation cooldown, and no third-party smart-contract exposure.

Liquid Staking (raSOL)

Depositing SOL into the liquid staking path mints raSOL — a value-accruing receipt token built on Sanctum infrastructure. The raSOL balance stays fixed; appreciation happens through an increasing exchange rate as validator rewards accumulate each epoch. No manual compounding is required. Hubra charges no protocol fees on exits: the slow-unstake path (approximately two to three days) is entirely free, while the instant-unstake path carries only the market price impact from Sanctum's pooled liquidity.

raSOL integrates broadly across the Solana DeFi stack. It is swappable on Jupiter, Orca, Meteora, Raydium, and Titan, and accepted as collateral on Kamino, Save, and Loopscale. This composability lets holders earn staking yield while simultaneously deploying their position as productive collateral or trading inventory.

Leveraged Staking (raSOL Max)

raSOL Max is Hubra's amplified staking product, described by the team as experimental. Users deposit raSOL, which the strategy uses as collateral on Save Finance. It then flash-borrows SOL from MarginFi (zero protocol fee since May 2026), swaps the borrowed SOL back to raSOL via Sanctum at native stake-pool rates, and re-deposits the resulting raSOL — repeating the cycle until reaching a configured target leverage of up to 2.75x. The entire loop executes in a single transaction.

Net yield follows the formula: net APY equals raSOL staking APY multiplied by live leverage, minus SOL borrow APY multiplied by live leverage minus one. The adapter rebalances autonomously: it increases leverage when borrow rates sit comfortably below staking yield and reduces it when rates spike. Users hold raSOL Max tokens, whose exchange rate climbs over time. There is no cooldown or queue on withdrawals; the position can be exited in a single transaction, using a flash-loan bracket when vault idle liquidity is insufficient.

Hubra explicitly labels raSOL Max as carrying smart-contract and market risk. The Voltr vault program that holds funds has been audited by FYEO and reviewed by Sec3 X-RAY static analysis. The rasol-max adapter code driving the leverage logic is not yet independently audited. The vault enforces a whitelist that restricts the adapter to routable lending markets only — it cannot send assets to arbitrary addresses.

USDC Earn

USDC Earn offers stablecoin yield through the same Voltr vault infrastructure. Deposited USDC is routed across whitelisted lending venues — currently Kamino and Jupiter lending — by an autonomous rebalancer that shifts allocations toward the higher-yielding market each cycle. Users receive raUSDC, a receipt token whose share price appreciates over time. Withdrawals are instant with no queue or cooldown. All four fee slots (performance, management, issuance, redemption) are set to zero; Hubra earns nothing from the products directly.

The Voltr vault program and its adapter programs have passed FYEO audit and Sec3 X-RAY static-analysis review. Hubra never holds user USDC: deposits and withdrawals are direct on-chain calls to the vault program.

Gasless Transactions and Social Login

Hubra sponsors gas fees across all its operations, removing the barrier of needing SOL in a wallet before interacting with the platform. This is paired with social login wallet support, enabling users to start staking with a web2-style sign-in flow.

Developer and Agent API

Hubra exposes a plain HTTPS API — no local signing keys required — that allows autonomous AI agents and software bots to perform the full staking surface: query strategies, request stake and unstake quotes, construct and broadcast unsigned transactions. Authentication for protected endpoints uses HMAC tokens. Endpoints cover health, strategies, quote, stake, unstake, withdraw, and broadcast, following RFC 9457 error semantics.

Ecosystem Fit

Hubra occupies the validator-operator-as-product niche: a team with multi-year operational experience packaging that continuity into differentiated retail and developer-facing products. Its raSOL sits within the Sanctum preferred-partner framework, giving it deep DEX liquidity and broad collateral acceptance across Solana lending markets. The leveraged staking product integrates MarginFi, Save, and Sanctum in a single strategy, while USDC Earn routes through Kamino and Jupiter — making Hubra a connector layer across several of Solana's largest DeFi protocols rather than a standalone island.

The team's active governance participation — and their deliberate policy of giving stakers veto power over Hubra's vote — positions the project as aligned with the longer-horizon, decentralisation-minded segment of the SOL holder base, the audience their tagline is aimed at.