USDtb keeps the T-bill yield for the issuer, not the holder

USDtb is a USD stablecoin whose core “tokenomics” is simple and brutally traditional: elastic supply minted against reserves, with reserve yield retained by the issuing stack, not streamed to token holders. That single choice shapes everything: adoption incentives, peg dynamics, and the long-run sustainability of growth without subsidized emissions. For a contrast with other yield-linked stablecoins, it’s useful to compare how value capture is routed.

Mechanically, USDtb is positioned as a fully backed stablecoin whose reserves are primarily tokenized U.S. Treasury money market exposure via BlackRock’s BUIDL token, plus a cash buffer intended to support redemptions, as described in the project documentation.

A key structural milestone is that issuance, redemption, and reserve management were transitioned to Anchorage Digital Bank on October 13, 2025 under its covered stablecoin terms.

Supply and “emissions”: USDtb has no inflation schedule

USDtb does not run a token emission program in the way DeFi governance tokens do. There is no pre-committed inflation curve to “sustain.” Supply expands and contracts with minting and redemption activity, at par, subject to issuer controls.

Anchorage’s covered stablecoin framework describes the model in institutional terms: reserve assets are managed so that aggregate reserve market value is at least equal to outstanding stablecoins as of the end of each business day.

The most concrete way to think about “emissions over time” for USDtb is net issuance. The Anchorage reserve attestations make that visible as outstanding supply on reporting dates.

On October 31, 2025, the attestation report shows 1,832,012,463 USDtb redeemable tokens outstanding in the October 2025 attestation.

On January 31, 2026, the attestation report shows 875,092,512 USDtb redeemable tokens outstanding, split across Ethereum and Solana in that report’s Schedule I, per the January 2026 attestation.

That contraction matters. It implies USDtb should be analyzed less like a growth-at-all-costs balance sheet and more like a liquidity instrument whose scale is a function of integrations, collateral acceptability, and institutional mint/redeem access.

Reserves: BUIDL-heavy backing, plus a cash buffer

The reserve attestations are the cleanest primary source on backing composition because they enumerate reserves and outstanding tokens under stablecoin-specific reporting criteria. Anchorage states reserve holdings are disclosed monthly and the reports follow AICPA stablecoin reporting attestation standards.

As of January 31, 2026, the reserve report shows total reserve assets of $876,730,789, composed of $11,257,354 cash and $865,473,435 in BUIDL (fair value).

As of October 31, 2025, the reserve report shows total reserve assets of $1,835,531,488, composed of $10,000,035 cash and $1,825,531,453 in BUIDL (fair value).

The same reports describe BUIDL as a tokenized money market fund permitted to hold U.S. Treasury obligations and related instruments, with a daily dividend distribution, and redeemable at NAV through Securitize on a daily basis as described there.

Two implications follow for long-horizon sustainability.

First, USDtb’s backing is structurally “productive” at the reserve layer because it holds yield-bearing short-duration government exposure. For a comparable onchain Treasury exposure pattern, it’s helpful to contrast how the product layer, access model, and value capture differ. That can finance operations and buffers without printing more USDtb. The protocol does not need inflation to pay for its own existence.

Second, the reserve asset is not a perfectly free-floating onchain commodity. The attestation describes BUIDL as a private and unregistered money market fund with no secondary market for shares, and redemption routed through the fund’s rails.

Utility and fiscal flows: mint/redeem access, fees, and who captures carry

USDtb’s user-facing utility is familiar. It is a dollar unit that can move onchain. What’s distinct is how tightly mint and redeem is gated.

Only customers of Anchorage Digital Bank are able to mint and redeem USDtb per the project documentation.

Anchorage’s Covered Stablecoin Terms reinforce that only Anchorage clients can issue or redeem directly with the bank, while non-clients have no contractual relationship with Anchorage under those terms.

That gating pushes USDtb’s peg mechanism toward a “dealer model.” The token can circulate freely, but the price anchor is strongest for entities that can become clients and run primary redemptions. Everyone else is structurally downstream of market makers and liquidity venues.

Fees are a surprisingly important part of sustainable token economy design for stablecoins because recurring fees can act like an invisible inflation tax on velocity. Here, Anchorage’s public fee schedule says no covered stablecoin service fees are charged in connection with USDtb.

The dominant economic flow is reserve income. Anchorage’s terms state that reserve assets are held in a South Dakota express trust, with Anchorage as trustee, and that income or gains beyond what is necessary to maintain one-to-one backing constitute fiduciary compensation to Anchorage for administering the reserve trust.

That is the cleanest possible expression of “inflation must be justified by productivity.” USDtb does not pay holders. It pays the issuer stack. Productivity sits offchain in the reserve portfolio, and the value capture sits with the administrator.

This design can be stable over long horizons because it does not require continuous token printing to fund incentives. The trade-off is that growth is less reflexive. You cannot farm your way into sticky demand with native yield. Demand has to come from collateral acceptance, settlement utility, and integration depth.

Governance and control surface: admin keys beat “governance tokens” here

USDtb is not meaningfully governed by a tokenholder DAO in the way many DeFi assets are. Control sits with the issuer stack and with smart contract roles.

At the policy layer, Anchorage can amend covered stablecoin terms by posting updated terms, and the amendments become effective upon posting per those terms.

At the enforcement layer, Anchorage’s terms also contemplate intervention powers. They state Anchorage may freeze, block, seize, or restrict stablecoins under legal process or where it determines transfers likely violate applicable law or regulation.

At the smart contract layer, the project publishes key contract addresses, including the Ethereum L1 token contract address and a Solana token contract identifier, plus an L2 contract address used on Base and Arbitrum in the docs.

Those contracts have explicit control logic. The published audit material for the UStb contracts describes role-based access controls and transfer restrictions, including a transfer state that can be fully disabled, whitelist-only, or more permissive with blacklist enforcement.

The audit set also describes the mint/redeem plumbing as a controlled flow with limits. Quantstamp’s report notes that when a new collateral asset is added to the minting contract, the max mint and max redeem limits per block per asset are part of the configuration, and it comments on observability of those limits via events.

Finally, the project’s documentation states the smart contracts underwent three private audits and a public contest cycle in late 2024, which matters because USDtb’s control plane is largely contract and issuer driven.

Risk analysis: sustainability comes from reserves, fragility comes from access

USDtb’s design is fundamentally sustainable on paper because it avoids the classic DeFi failure mode of paying users with inflationary emissions untethered to output. The reserves generate yield. Operating costs can be paid from yield. In equilibrium, that can run indefinitely without debasing the unit. If you’re tracking how these design trade-offs show up across real-world deployments, our stablecoin research is where we collect related analysis.

The fragility is not “will the emissions run out.” It is whether the peg, liquidity, and redemption pathway remain credible under stress when access is permissioned and interventions are possible.

Top 3 risks

  1. Redemption access segmentation. Trigger: market stress, venue-specific liquidity shock, or a compliance-driven reduction in the set of entities able to redeem. Mechanism: par value is explicitly tied to redemption by eligible clients, while market price on third-party platforms can float; if fewer actors can arb, spreads widen. Who bears it: non-client holders, DeFi users treating USDtb as cash, and protocols taking USDtb collateral without haircut logic. Measurable indicators: widening USDtb secondary market deviations versus $1, shrinking onchain liquidity depth on major venues, and drops in outstanding supply coincident with stress.

  2. Reserve liquidity and settlement cadence. Trigger: rapid redemption wave that exhausts the stablecoin cash buffer, especially around non-business days. Mechanism: BUIDL is a fund token with its own redemption rails and constraints described in attestation language; if conversion from BUIDL to cash is not instantaneous at the margin, redemption throughput becomes a function of operational processes, not just blockchain finality. Who bears it: primary redeemers first (through delays), then secondary market holders (through peg drift), then protocols relying on immediate liquidity. Measurable indicators: cash as a percentage of reserves falling, increased “surplus” compression in attestations, and visible increases in redemption queues or delayed settlements if disclosed by issuers.

  3. Control-plane risk: freezes, transfer restrictions, and admin-controlled parameters. Trigger: regulatory action, sanctions screening events, key compromise response, or conservative risk management choices. Mechanism: the issuer framework explicitly allows restrictions, and audited contracts include blacklist and transfer-state logic; this can strand liquidity in certain contexts even if reserves remain solvent. Who bears it: addresses subject to restrictions, protocols with automated liquidation paths, and liquidity providers exposed to “sudden non-transferability.” Measurable indicators: onchain role/permission changes if observable, contract-level pause events where present, and documented policy updates to terms that expand restriction scope.

Dominant risk: redemption access segmentation

This is the risk that matters because it is the one that turns a “fully backed” stablecoin into a potentially volatile trading instrument without any change in reserves.

The terms are explicit that non-clients have no contractual relationship with the issuer under those terms, while clients are the ones who can directly issue and redeem. That is a rational compliance posture. It also means USDtb’s peg is only as strong as the competitive set of redeem-capable arbitrageurs willing and able to intermediate between onchain USDtb and offchain settlement.

In calm markets, this looks like a feature. Permissioned primary dealers can quote tight markets, and the system avoids the chaos of anonymous redemptions. With no mint/redeem fees, a well-capitalized dealer set can keep spreads tight because the marginal arb is not being taxed by the issuer.

In stressed markets, the same design becomes a convexity problem. If risk rises, the dealer set tends to shrink exactly when you want it to expand. Compliance checks get tighter. Balance sheets get rationed. Trading venues impose their own controls. The peg then becomes a function of dealer balance sheet capacity, not reserve solvency.

That dynamic is visible in the type of supply swings you can see in attestations. Outstanding USDtb fell from 1,832,012,463 on October 31, 2025 to 875,092,512 on January 31, 2026. A contraction like that can be benign. It can reflect portfolio rebalancing or venue flows. But it also highlights that USDtb’s “emissions path” is not guaranteed to be monotonic. In a risk-off regime, USDtb can de-lever quickly if a small set of large holders redeem.

For DeFi integrations, this translates into a clear operational requirement. If a protocol treats USDtb like USDC in liquidation logic, it is implicitly assuming continuous near-par liquidity under stress. That assumption must be tested. For a non-stablecoin baseline on tokenized government exposure, compare to the USTB fund structure and how it differs on redemption mechanics and transfer constraints. The safer stance is to model USDtb like a high-quality, short-duration RWA-backed unit with permissioned redemption and design risk parameters around potential spread widening and transfer restriction scenarios.

None of this is an argument that USDtb is poorly designed. It is an argument that the design is closer to a bank-issued payment instrument than a crypto-native bearer asset. That can be sustainable for decades. It just needs to be priced and risk-managed as such.

If you’re doing due diligence or building around USDtb and want a second set of eyes on the parameterization, this is the kind of work that benefits from a narrow token economy review rather than generic tokenomics consulting. The edge is in mapping redemption access, control surfaces, and observable reserve reporting into concrete onchain risk limits.

If you want to understand how we translate those observations into actionable parameters, our tokenomics methodology lays out the evaluation framework we use.



This article is part of our Tokenomics Deep Dive series.