VENUEVERITAS

DEX EVIDENCE INTERFACE

Ostium

Synthetic marketsRFQ

Onchain perpetual instruments on Arbitrum with USDC settlement, in-house oracle, OLP vault, and offchain institutional hedging.

Compare DEXsInspect evidence

How does this DEX actually work?

Structural flow from documented architecture — not a performance or safety claim.

  1. Trader

    USDC from self-custodied wallet

  2. RFQ / partner quote

    No resting order book (docs)

  3. Onchain settlement

    Open/close/liquidate on Arbitrum contracts

  4. Ostium consensus oracle

    In-house pull oracle for entry/exit/liquidation

  5. Offchain hedge layer

    Institutional partners (e.g. Jump cited) hedge net delta

  6. Daily settlement

    USDC rebalance between vault buffer and hedge book

Where is collateral held?

Follow the path from wallet to settlement. Smart-contract custody is still custody risk.

  1. User walletUser wallet (USDC)
  2. DepositSegregated smart contracts
  3. VaultOLP settlement vault
  4. ExternalOffchain hedge book (operational USDC flow)
  5. SettlementInstant onchain PnL to wallet

Custody model: Smart-contract custody — Not labeled simply “non-custodial.” Unknown edges stay Unknown.

Key structural facts

Liquidity model
RFQ + OFFCHAIN HEDGE + OLP VAULT
Counterparty
Instant settlement via OLP; directional risk hedged with institutional partners
Chain / settlement
Arbitrum · On-chain
Chains
Arbitrum

Docs: OLP is settlement working capital, not directional counterparty of flow

Who controls what?

Governance processes do not by themselves prove decentralized operational control.

Operational admin

Roles that can change contracts, parameters, or day-to-day operations.

  • Proxy / upgrade admin

    Controller ProxyAdmin 0x083F97BabF33D4abC03151B5DEc98170761f4025

    Mechanism Upgradeable proxy pattern — who controls ProxyAdmin EOA/multisig not fully named

    Timelock TimeLockOwner listed on testnet; mainnet timelock controller RESEARCHED_UNRESOLVED

    Verified not structured · 2026-08-30 · Source

  • Oracle operation

    Controller Ostium Labs (in-house consensus oracle)

    Mechanism Multiple publishers → consensus price onchain

    Timelock Unknown / none documented

    Verified structured · 2026-08-30 · Source

  • Liquidation automation

    Controller Permissionless keepers (docs)

    Mechanism Automated keepers

    Timelock Unknown / none documented

    Verified structured · 2026-08-30 · Source

  • Emergency / market freeze

    Controller Ostium Labs (docs: remediation may include market freeze)

    Mechanism Described in audit FAQ — not a formal onchain pause mapping

    Timelock Unknown / none documented

    Verified not structured · 2026-08-30 · Source

Protocol & operator surfaces

  • Protocol
    No verified legal name on this surface

    Audited smart contracts on Arbitrum

    Handles trades and holds collateral in contracts

    Verified structured
  • Developer entity
    Ostium Labs Co.

    Company developing protocol / services (privacy policy)

    Named with Ostium Foundation in privacy policy; does not custody per architecture docs

    Verified structured
  • Foundation
    Ostium Foundation

    Named with Labs in privacy policy

    Jurisdiction / corporate registry details RESEARCHED_UNRESOLVED

    Verified not structured
  • Frontend operator
    Legal operator unresolved

    app.ostium.com / Bot Services under Terms

    Terms restrict App/Bot trading for Restricted Persons

    Verified structured

How are prices determined?

Oracle provider presence is not a claim that the oracle is secure or endorsed.

Primary oracle
Ostium in-house consensus oracle
Price / index construction
Multiple independent publishers sign; consensus published onchain
Fallback
Chainlink Data Streams noted for crypto in older GitBook; confirm current primary docs
Update mechanism
Pull / on-demand when trader opens; sub-second RWA feeds
Dependencies
Ostium Labs oracle ops · Market data providers · Institutional quote partners
Last verified
2026-08-30 · Verified structured

Source

What happens if margin falls too low?

Liquidation mechanics in plain language — not a guarantee of user outcomes.

Maintenance / trigger
Collateral below maintenance margin
Partial / full
Liquidation when threshold breached (docs)
Liquidator / keeper
Permissionless automated keepers
Liquidation fee
Unknown
Insurance / backstop
Junior buffer before OLP senior loss; OLP not insured
Bad debt handling
Subordination structure described; not a solvency guarantee

Insurance or buffer existence is not a solvency guarantee. · Verified structured

Who is on the other side of the trade?

Counterparty models differ by protocol — not every perpetual DEX shares the same structure.

RFQ + OFFCHAIN HEDGE + OLP VAULT

Counterparty Instant settlement via OLP; directional risk hedged with institutional partners

Docs: OLP is settlement working capital, not directional counterparty of flow

Verified structured

Fees

Snapshot mechanisms and rates where documented. Not labeled cheapest or best value. Funding ≠ borrow unless documented.

  • opening3–10 bps of notional by asset class (e.g. FX 3 bps, crypto 10 bps)asset_class · 2026-08-30 · Verified structured · Source
  • oracle$0.10 USDC flat per price request (refunded on successful full close)2026-08-30 · Verified structured · Source
  • rolloverVariable continuous fee from underlying carry + Ostium premium2026-08-30 · Verified structured · Source
  • early close0–40 bps of notional on profitable closes within 15s; capped at profit2026-08-30 · Verified structured · Source
  • liquidationRemaining collateral taken on liquidation2026-08-30 · Verified structured · Source

Ostium documents rollover fees from real-world financing — distinct from crypto funding-rate products unless explicitly mapped.

What markets does Ostium support?

Only officially supported classes from primary evidence. Presence is not a recommendation.

  • CryptoSupported
  • FXSupported
  • CommoditiesSupported
  • IndicesSupported
  • StocksSupported
  • ETFsSupported

75 pairs cited in How Ostium Works (2026-07-22 docs)

Structured for possible future VenueVeritas↔FXVeritas research link — not a cross-site claim.

Security evidence

Smart-contract audits are not financial audits. No combined “audited” badge. No security score.

Smart-contract audits

  • Zellic2024-02 / 2025-11 · Core trading, vault, liquidation, oracle handling (post-JLU Nov 2025)Verified structuredSource
  • ThreeSigma2024-02-19 to 2024-03-22 · Trading, OLP vault, rollover, position closureVerified structuredSource

Security reviews

  • Pashov Audit Group2025-01 / 2025-04 / 2026-01 · Trading/vault/oracle/liquidation; Jan 2026 post-JLU 13 contractsVerified structuredSource

Bug bounty

  • Immunefi (Ostium program)Date unknown · Responsible disclosure via Immunefi per audits pageVerified structuredSource

Material incidents

None structured in this pack (not a claim that none occurred).

Access surfaces

Protocol access, frontend access, and terms eligibility are separate. Not “available globally” unless evidenced.

  • Protocol access

    Architecture docs: contracts remain callable if interface down — permissionless network access ≠ terms eligibility.

    Verified structuredSource
  • Frontend access

    Terms: use of the App or Bot for trading is not permitted for Restricted Persons (US, UK, EU, Philippines, comprehensive US-sanctioned territories).

    Verified structuredSource
  • Terms of service

    Official Terms of Use Restricted Jurisdictions language covers App/Bot/Services trading — VPN circumvention prohibited.

    Verified structuredSource
  • Geo block

    Technical geo-block mechanism not separately documented beyond Terms Restricted Person rules.

    Researched unresolvedSource
  • Legal eligibility

    Terms eligibility ≠ regulatory authorization evidence.

    Verified structuredSource

Direct answers

  • How does Ostium offer FX and commodity markets?

    Synthetic perpetual instruments priced by Ostium's consensus oracle from market data providers; settlement in USDC onchain while net directional exposure is hedged offchain with institutional partners.

    Verified structured · Source

  • What oracle does Ostium use?

    An in-house consensus oracle operated with Ostium Labs, publishing agreed prices onchain for opens, closes, and liquidations.

    Verified structured · Source

  • Where is Ostium collateral held?

    USDC in audited smart contracts / OLP settlement vault on Arbitrum. Offchain hedge books move operational USDC at daily settlement — trader collateral remains described as self-custodied in contracts.

    Verified structured · Source

  • Who operates Ostium?

    Docs separate Protocol (contracts), Interface (app.ostium.com), and Ostium Labs (developer). Frontend legal operator jurisdiction remains LEGAL_OPERATOR_UNRESOLVED beyond the Labs label.

    Verified structured · Source

What does this DEX depend on?

Material dependencies only. Dependency count is not a risk score.

  • BlockchainArbitrumSettlement
  • StablecoinUSDCCollateral
  • Lp VaultOLP vaultIntraday settlement
  • OracleOstium consensus oraclePricing
  • Market MakerInstitutional hedge partnersNet delta hedge

Contracts (primary-sourced)

  • ProxyAdmin (Arbitrum): 0x083F97BabF33D4abC03151B5DEc98170761f4025 — Proxy admin for upgradeable contracts
  • Vault (Arbitrum): 0x20D419a8e12C45f88fDA7c5760bb6923Cee27F98 — OLP / settlement vault
  • Trading (Arbitrum): 0x6D0bA1f9996DBD8885827e1b2e8f6593e7702411 — Trading execution

Open gaps

  • ProxyAdmin ultimate controller EOA/multisig identity not named
  • Foundation/Labs Co. jurisdiction registry details unresolved
  • Frontend legal operator label beyond Labs/Foundation brands unresolved

Primary sources

DEX Architecture / Control / Custody evidence only. No DEX score. Unresolved states remain unresolved.