OpenCover
OpenCover is a marketplace for onchain cover. It does not carry the risk itself: it compares offers from several providers, lets you buy in a few clicks, and issues an NFT as your proof of purchase. If a loss occurs, you file the claim directly with the provider, not with OpenCover.
A claim goes straight from you to the underwriter, OpenCover is not in that path.
Legal entity Gelt Finance Inc. (California), operating since around 2021. A factual analysis of how the broker works, read from its own terms.
Who this is for: DeFi users and institutions who want to buy cover from several underwriters in one place.
A technically clean, broadly stocked placement platform with transparent fees and on-chain proof of cover. As a broker it is strong on access and execution, but light on the two duties that define a full-service broker: advising which cover fits, and standing by the client at claim time.
Measures how fully OpenCover performs the duties of a cover broker. This is not the Assecura cover-payout score, and says nothing about the underwriters behind it.
Eight vetted underwriters across five chains, with the vetting criterion disclosed (a track record of underwriting AND paying out claims). Broad, serious market access.
A core broker duty that OpenCover deliberately declines: its terms (1.4) state it "does not endorse any particular Cover Provider or advise on whether a specific Cover is suitable." The buyer must read each wording and decide alone.
The OpenCover fee is shown on the quote screen before purchase (7.1) and no fee is taken from claim payouts (7.3). Open point: whether the fee is identical across providers (so it cannot bias which one is shown) is not documented.
Smart-contract escrow, an ERC-721 proof of cover, renewals and multi-chain support. Settlement can take up to 24h (6.3), otherwise strong, well-automated placement.
Claims run directly with the underwriter (6.2); OpenCover takes no fee from payouts but also does not actively support the client through a claim. Claims advocacy is a defining full-broker duty that is largely absent here.
Transparent fee and buyer-friendly escrow, but not a regulated business (1.5) and no fiduciary/advice framing. How commission conflicts across providers are handled is not detailed.
Underwriters are selected on a disclosed track record of paying out claims. A clear, sensible security filter.
What it is
OpenCover organises the purchase, it does not carry the risk. In its own words (terms 1.4): "OpenCover does not directly provide Cover." You appoint it as your agent to buy cover from a provider on your behalf (terms 4). It is explicitly not a regulated business and not supervised by any authority (terms 1.5).
Underwriters & reach
Eight underwriters are profiled: Nexus Mutual, Unslashed Finance, InsurAce, Chainproof, Sherlock, Ease, InsureDAO and UnoRe. Selection criterion per terms 1.4: a track record of underwriting cover AND paying out claims. Available on Base, Ethereum, Arbitrum, Optimism and Polygon, across 100+ protocols and protocol combinations. Headline pricing (landing page): from about $2 per week for $5,000 of coverage.
Fees & funds
The OpenCover fee is shown on the quote screen before purchase (terms 7.1). The mechanic (terms 5.1.1, 7.2): your cover fee is locked in the OpenCover smart contract; OpenCover advances the premium, buys from the provider, and only collects its own fee once the proof of cover is delivered on-chain. If no proof arrives within 24 hours, you (and only you) can reclaim the locked fee. So funds sit briefly in the OpenCover contract and are user-reclaimable, rather than held long-term.
Claims
Claims run directly with the underwriter, using that provider’s own claims and dispute process (terms 6.2). OpenCover takes no fee from claim payouts (terms 7.3), which is buyer-friendly. The flip side: OpenCover does not actively support you through a claim, you deal with the underwriter yourself.
On-chain proof
A purchase made through OpenCover is represented by an ERC-721 "Proof of Cover" NFT, with its status reflected on-chain; settlement can take up to 24 hours (terms 6.3). This NFT is a proof of the purchase brokered through OpenCover; the actual policy is the underwriter’s own cover token. OpenCover is also the leading publisher of onchain cover and claims data (opencover.com/data).
The escrow contract: what you trust
Because your fee sits briefly in OpenCover’s Quote contract, it is worth knowing how that contract works. It is open source (AGPL-3.0) and verifiable, but note three trust assumptions, all readable in the code:
- Upgradeable: the Quote contract is a UUPS proxy, so its admin can change the contract logic later (per OpenCover’s own repo).
- Operator-gated: every quote must be signed by an OpenCover operator key (OPERATOR_ROLE), so buying is not permissionless, it goes through OpenCover.
- Pausable: OpenCover can pause new quotes (whenNotPaused). Existing proof-of-cover NFTs stay readable.
- No public audit of OpenCover’s own contracts was found (the audits their model requires apply to the covered protocols, not to OpenCover). The code being open helps, but an independent audit is not on record.
Contracts on Base, Optimism, Arbitrum and Polygon, published by OpenCover: OpenCoverDeFi/opencover-contracts-v1 ↗
Strengths
- Broad, seriously vetted underwriter selection (eight providers), with the vetting criterion disclosed.
- Transparent fee shown before purchase, and no fee taken from claim payouts.
- Wide reach: five chains, 100+ protocols, plus an institutional offering.
- On-chain proof of cover and openly published industry data.
What to keep in mind
- By design it does not advise: terms 1.4 state it "does not endorse any particular Cover Provider or advise on whether a specific Cover is suitable." You must read each cover wording and decide yourself.
- No active claims support: a claim is between you and the underwriter.
- Funds are briefly locked in the OpenCover contract before settlement (reclaimable after 24h), so it is not fully non-custodial during that window.
- Not a regulated business (terms 1.5); cover is discretionary, not insurance in the regulated sense.
Sources
- OpenCover Terms of use (legal entity, agent role, fees, funds, claims)
- OpenCover About (mission, team, model)
- OpenCover Industry data
- OpenCover (underwriters, chains, pricing)
Analysis as of 2026-07-17, read from public sources. A snapshot with a date, not advice. Cover is discretionary; claims are decided by each underwriter.