USDtb

Ethena launched USDtb in December 2024 beside, rather than inside, USDe. USDe sought dollar stability through crypto backing and delta-neutral derivatives hedges. USDtb used a more familiar liability-and-reserve form: one transferable token supported mainly by BUIDL, with stablecoin or cash liquidity for redemptions.

The initial design made BlackRock's name visible but did not make BlackRock the stablecoin issuer. BUIDL is a separate BVI private fund managed by BlackRock; its tokens represent fund shares and Securitize administers tokenization. Ethena assembled the USDtb product and distribution. These were three different objects before a bank entered the center.

On October 13, 2025 issuance, redemption and reserve management transferred to Anchorage Digital Bank. The bank's current terms call it the sole issuer and sole obligor, while a brand partner cannot bind it or inherit its liabilities. Ethena remained important to the name, technology and distribution, but no longer was the party that legally issued each dollar token.

The reserve now sits in a South Dakota express trust with Anchorage as trustee. Its aggregate market value must equal or exceed outstanding covered stablecoins at the end of each business day. BUIDL supplies most of the exposure and cash supplies a liquidity sleeve. Earnings above the amount needed for one-to-one backing are trustee compensation to Anchorage, so a wallet balance does not accrue the fund's dividend.

The first post-transfer examination captured reserves measured as of October 31, 2025. The independent accountant reported 1,832,012,463 redeemable tokens and $1,835,531,488 in assets: $1,825,531,453 BUIDL plus $10,000,035 cash. It also noted that cash exceeded the $250,000 FDIC limit. This was a dated attestation of management's reserve report, not an audit of every control or a guarantee against later loss.

The attestations classify outstanding USDtb as redeemable rather than permanently restricted supply. The legal terms add the decisive qualifier: Anchorage redeems exclusively for Clients with an account agreement. A holder who has not become an Anchorage Client has no contractual relationship with the bank or enforceable right under these terms, except as applicable law may provide. Client status depends on the account relationship, not the purchase venue; an existing Client can also buy on the secondary market.

A Client may request issuance or redemption at the $1 par value, net of applicable fees. Anchorage retains discretion to refuse, suspend or limit requests for verification, compliance, fraud, risk, liquidity or operational reasons. Its August 25, 2026 fee schedule lists no covered-stablecoin service fee for USDtb, but that does not promise instant processing or remove network, platform and bank-account costs.

Transfers pass the token's associated rights, yet the right to redeem remains conditional until the recipient becomes a Client. The bank may block or seize tokens when law or official process requires and may suspend or discontinue a supported chain. An unauthorized wrapper is not a redeemable USDtb merely because its ticker matches.

USDtb kept Ethereum address 0xC139190F447e929f090Edeb554D95AbB8b18aC1C. Explorer history shows an initial implementation in November 2024 and an upgrade to AnchorageTokenUSDtb on October 13, 2025—the legal transition date. Continuity of address therefore does not mean continuity of code or administrator.

The active implementation assigns a MINTER_BURNER role that can mint to or burn from an address, a BLOCKLISTER that can block accounts, a PAUSER that can halt transfers and an administrator that can grant roles. The transparent proxy adds a separate implementation-upgrade surface. Those are compliance and recovery tools as well as concentration points.

Ethena's audit page publishes three October 2024 assessments of the earlier token and minting contracts and says none found a critical or high issue. They are useful history, but they predate the Anchorage implementation. The explorer currently identifies the replacement code and its roles; the reviewed official material does not supply a single audit report covering that entire post-transfer system or identify every present human signer.

Ethena can use USDtb as infrastructure or liquidity alongside its other products, and third-party stablecoins such as JupUSD may hold it in their own reserves. None of those layers merges the claims. A JupUSD holder depends first on JupUSD's issuer and program; a USDtb holder depends on Anchorage's terms; Anchorage in turn manages BUIDL and cash inside the reserve trust.

USDe remains the synthetic-dollar product whose backing and derivatives hedges create a different risk set. ENA remains a governance token whose holders influence Ethena committees and proposals. USDtb is designed for payment and settlement without appreciation or native yield. Understanding it requires following the issuer and reserve, not borrowing the rewards or governance story of adjacent tickers.