USOf

ETFsLive

Tokenized United States Oil Fund

Tokenized United States Oil Fund, fund-style exposure delivered as a single wrapped token.

See USO on /markets →Underlying ticker: USO

Key facts

Wrapped symbol
USOf
Underlying
USO
Asset class
ETFs
Custodian
Interactive Brokers
Chains
Base, Arbitrum, Ethereum
Distribution treatment
Total return, accrued to NAV
Attestation cadence
Daily
Issuer
Flo Global Markets Ltd. (BVI)
Asset SPC
Flo Capital SPC (Cayman)
Prospectus
FMA-approved Liechtenstein base prospectus

How USOf resolves to USO

Each USOf on-chain represents a unit claim on the underlying United States Oil Fund held in a segregated brokerage account. The issuer, custodian, and prospectus are the same for every Flo token; only the underlying differs.

  1. 01

    Issuance

    Flo Global Markets Ltd. (BVI) issues USOf under the FMA-approved Liechtenstein base prospectus, EEA-passported across 30 states.

  2. 02

    Custody

    The underlying United States Oil Fund is held by Flo Capital SPC (Cayman) in a segregated brokerage account at Interactive Brokers, an SEC-registered broker-dealer.

  3. 03

    Settlement

    USOf settles on-chain on Base, Arbitrum, Ethereum. Cross-chain transfers route through Chainlink CCIP.

  4. 04

    Attestation

    Reserves are attested daily by an independent auditor and published on the Flo transparency surface.

Mint USOf with one SDK call

Every Flo-issued token shares the same six SDK methods. Mint, redeem, supply, withdraw, borrow, repay.

POST /v1/mint

{
  "asset": "USO",
  "notional_usdc": "1000.00",
  "slippage_bps": 50,
  "settlement": {
    "currency": "USDC",
    "chain": "base"
  }
}

Where USOf lives today

Flo distributes through partners. The same USOf on-chain is the asset every partner integrates against; partner UIs may relabel it for their own brand.

Partner integrations in build

No live partner is distributing USO yet. Twelve integrations are in build across exchanges, wallets, fintechs, neobanks, and asset managers. Partners are listed here only after they ship.

Audits

Four independent firms, $250K bug bounty

Sherlock, Halborn, Cantina, and Cyfrin have audited the smart contracts that issue and settle USOf. The same contracts power every Flo-issued token; one audit covers the catalogue.

Read the audit reports →

Prospectus

FMA-approved Liechtenstein base prospectus

USOf is issued under a base prospectus approved by the Liechtenstein Financial Market Authority and passportable across all 30 EEA states.

Open the prospectus →

Risks

USOf carries the market risk of the underlying United States Oil Fund, plus the structural risks common to every issuer-wrapped token: custody concentration, smart-contract risk, oracle dependency, and prospectus jurisdiction. Read the full risk section in the base prospectus before integrating or holding.