Solstice USX

Solstice Finance is a Solana-native yield protocol built around USX, an overcollateralized settlement asset backed by audited cash, tokenized Treasuries and delta-neutral hedged positions. Users deposit USX into YieldVault products, and fintechs and wallets can integrate the same yield through its YaaS API.

USX can be minted 1:1 with USDC or USDT by individuals, while institutions with at least $500K can mint directly after KYC approval, with custom settlement windows and optional auto-conversion into eUSX. The protocol says it uses multi-oracle pricing, naming Chainlink for the USX program, and publishes reserve verification through Accountable's Proof of Solvency. The USX program is described as non-upgradeable with PDA-controlled minting, and YieldVault governance runs on a Squads 3/5 multisig.

• eUSX: delta-neutral vault that reports a 13.96% net IRR over three years, a 6.81 Sharpe ratio and no negative months (self-reported)
• strcUSX: structured-credit vault with isolated exposure to Strategy Inc. STRC preferred income; the senior tranche targets 7% and the junior tranche about 20% indicatively as first-loss
• aiUSX: AI lending vault financing GPUs and EU sovereign data centers through a facility of up to $1B capacity
• YaaS (Yield-as-a-Service): RESTful API and TypeScript SDK with sandbox, white-label React components, and OTC institutional minting
• SLX and stSLX: a token whose stakers gain direct minting and redemption access and priority integration onboarding

YaaS targets fintechs and neobanks, wallets and custodians, dApps and DAOs, AI agent wallets and exchanges. Onboarding is described as minutes for API keys, days for white-label and weeks for institutional OTC, and partners receive a revenue share from day one. The site lists partners such as Solana, Chainlink, Kamino, Raydium, Orca, Pyth, Copper.co, Marinade, Gauntlet, Paxos, Sanctum and Solflare.

According to its website, smart contracts have been audited by Halborn (three times) and Sep2, and financial statements were independently reviewed by Richie May. It reports $210M+ TVL, 30K+ holders and 50+ integrations (self-reported), and says it is backed by Deus X Capital. The site states the products are for professional and institutional users and restricts several jurisdictions, including the US, the UK, Singapore, Hong Kong and mainland China.