Ethena USDtb Review 2026: Treasury-Backed Stablecoin

USDtb is a USD stablecoin created and managed by Ethena Labs. The homepage describes it as a digital dollar for payments, trading and holding, backed by high-quality short-duration treasury assets including BlackRock's BUIDL fund.

DefiLlama lists it under RWA on Ethereum, with about $417 million in TVL, a 12.1% drop over seven days, and a listing date of 16 December 2024. It lists the token as ENA and shows no audits, though the homepage says contracts have been audited and that monthly attestations and live reserve dashboards are provided.

The project also lists partners across exchanges, custodians, money markets and liquidity providers. News items mention Bybit listing, Zodia Custody and Copper rewards programmes, promotional Merkl rewards on Aave, Morpho, Euler and Fluid, and a plan with Anchorage Digital to move onshore as a federally regulated payment stablecoin under the GENIUS Act.

USDtb is a USD-pegged token. Public sources say its reserves are invested in short-duration treasury assets, including BlackRock's BUIDL, a tokenized fund holding cash, U.S. Treasury bills and notes. The idea is that each token is supported by dollar-denominated assets that earn treasury yield.

BUIDL has a defined set of service providers: BlackRock is Fund Manager and Sponsor, Securitize is the Fund Transfer Agent, and BNY Mellon is Fund Admin and Custodian. BUIDL only permits transfers to whitelisted investors, so its holders pass KYC and AML checks.

The homepage describes a direct onchain mint and redeem mechanism that works 24/7. Beyond that, USDtb is meant to be used like other dollar stablecoins: sending payments, trading, holding, or supplying to DeFi markets. The project does not detail who can use direct mint and redeem or how redemption works in practice.

Fees are not published. The homepage does not state mint, redeem or transaction fees for USDtb.

Users should check the official documentation and the mint and redeem interface for current costs, plus normal Ethereum network gas fees. Yield or rewards offered through Bybit, money markets or custodians are set by those platforms and may change.

USDtb's safety rests on its reserves, the custodians and its smart contracts. The homepage says reserves are invested in BUIDL, which uses BNY Mellon as custodian and restricts transfers to whitelisted investors. It also claims numerous audits and monthly attestations, but DefiLlama lists zero audits, so readers should check the documentation for actual reports.

Key risks include concentration in one reserve fund, reliance on third-party providers, smart-contract bugs, and redemption or liquidity stress. The planned federal regulatory path is described as intent. It is not the same as confirmed regulated status today, so verify the current position in official sources. This is research-based, not financial advice.

USDtb is for DeFi users and institutions that want a USD stablecoin backed by tokenized treasuries, and who are comfortable with the reserve concentration, KYC-gated underlying fund and third-party dependencies.