USDsui

The asset is 0x44f838219cf67b058f3b37907b655f226153c18e33dfcd0da559a844fea9b1c1::usdsui::USDSUI. Sui metadata calls it Sui Dollar and records six decimals. That exact identifier excludes Sky’s USDS, Ethena-linked suiUSDe, Circle USDC and lookalike tickers.

Sui Foundation announced the concept in November 2025 and declared it live on 4 March 2026. Its launch article names Bridge, a Stripe company, as issuer through Open Issuance, but does not name the Bridge legal affiliate that owes token-specific obligations.

Bridge describes custom stablecoins as 1:1 backed by cash and U.S. Treasury value. Its general materials list short Treasury bills, overnight Treasury repos, government money-market funds and cash, with reserve and custody partners including BlackRock and Fidelity.

Those are platform-level disclosures. The reviewed official set does not publish USDsui’s selected allocation, bank and custody account schedule, or an asset-level reserve balance. Bridge’s FAQ says quarterly audits and transparency reports will be issued, but no USDsui-specific report was located.

The distinction matters because a portfolio description cannot prove that assets equaled USDsui liabilities on 5 September 2026. A dated accountant report or live issuer ledger would answer that narrower question; marketing about being fully backed does not.

Bridge’s flow begins when an approved customer or partner sends fiat or supported crypto. Bridge allocates reserves and mints the custom coin; redemption burns units before paying fiat or another supported stablecoin. The USDsui module itself exposes no public mint or redeem function.

Bridge Building Inc’s stablecoin terms describe one-dollar redemption and processing within two business days after compliance approval. They also permit rejection or suspension for legal, security, wallet and risk reasons. Because USDsui-specific pages do not map the coin to a precise Bridge affiliate and jurisdiction, those terms are a relevant model rather than proof that any anonymous wallet has an unconditional BBI claim.

USDsui’s Move module only creates a regulated currency and its capability objects. It contains no collateral vault, price feed, liquidation, automated market operation, rebase or interest index.

The peg therefore depends on Bridge honoring 1:1 issuance and eligible redemptions, plus market makers closing price gaps on Sui. When compliance access, banking hours, API service or liquidity narrows, the contract cannot force a market price back to one dollar.

TreasuryCap is the supply key. It can mint and burn without a programmed maximum, so supply follows accepted deposits and redemptions rather than emissions. DenyCapV2 is the compliance key: the package set allow_global_pause to true, enabling address denial and a currency-wide pause under Sui framework rules.

UpgradeCap is the code key. The package was published on 15 January 2026 and the review-date object remained under 0xd76f7d309d52d1020e50588997bb5b82d25e870542316fa082a6c6cdf93e3290 with unrestricted policy 0. An upgrade does not require a vote from USDsui holders.

Genesis records show TreasuryCap and DenyCapV2 first went to the package publisher, then ceased to appear as freely held standalone objects. The reviewed public product materials do not map their current wrapper, signer quorum, recovery policy or operational controller. That absence prevents a precise key-risk judgment.

Sui says USDsui interoperates with other Bridge-powered stablecoins. Bridge documentation explains API conversion among fiat and supported stablecoins, which can produce cross-chain outcomes through its orchestration service.

No reviewed USDsui page identifies a canonical bridge contract, validator set or native burn-and-mint route. A token bearing the same name elsewhere should therefore be verified by destination type and Bridge redemption support, not treated as identical because a front end says “USDsui.”

Bridge’s issuance materials say reserve earnings are shared with the developer and may be paid as a monthly distribution or marketing fee. Bridge Building Inc terms retain applicable net reserve returns and do not give holders property rights in the reserves. The product arrangement determines how these terms apply; neither creates automatic interest in the base token.

A Sui article dated 2 September 2026 says USDsui returns reserve interest to protocols and holders and drives SUI purchases and burns. The same published article contains a reviewer note asking for the distribution mechanism to be confirmed. Developer revenue could be redistributed, so Bridge’s model does not by itself contradict Sui’s claim. The reviewed material does not establish the USDsui-specific arrangement connecting them.

The coin module has no rebase, reward index or buy-and-burn function. That limits what the base token itself does; it does not rule out a separate distribution service. Lending or liquidity yield in Sui applications comes with those applications’ contracts, borrowers and incentives. The advertised reserve-income route and SUI purchases and burns remain unconfirmed product claims rather than an established automatic right of ordinary USDsui balances.