OpenCover
Founded 2021 Β· 8 employees on LinkedIn Β· 7 known investors
OpenCover partners with underwriters to offer insurance protecting individuals and institutions against onchain risks such as smart contract exploits, scams, and governance attacks. It provides portfolio cover, institutional services, and onchain insurance data.
Also known as OpenCover
Founders & leadership
OpenCover was founded in 2021 by Jeremiah Smith, PhD and Yury Oparin.
Investors Β· 7
Also in the syndicate Β· 4
Company profile
researched Aug 2026OpenCover operates a platform for purchasing onchain cover (described in the market as DeFi insurance alternatives) from third-party underwriters. Users can protect a crypto portfolio against risks including smart contract and protocol hacks, stablecoin depegs, and severe economic events such as oracle manipulation and governance attacks, with cover spanning more than 100 protocols and protocol combinations. Cover positions are represented as ERC-721 proof-of-cover tokens, and the site advertises premiums starting at $2 per week for $5,000 of coverage.
The product line spans retail portfolio cover, "covered vaults" positioned as DeFi yield products with embedded protection, and institutional services for organisations needing bespoke protection. OpenCover also publishes an industry data service that aggregates DeFi cover metrics β total value locked, active cover amount, covers sold, claims and payouts β across cover providers, compiled from onchain events, smart contract state and transaction traces, and states it tracks 96.7% of DeFi cover activity by public TVL across seven chains (Ethereum, Polygon, Arbitrum, Optimism, BNB Smart Chain, Astar and Avalanche). A learning hub hosts guides, a glossary and a recurring report on the state of DeFi insurance alternatives, alongside profiles of cover providers such as Nexus Mutual, Unslashed Finance, InsurAce, Chainproof, Sherlock, Ease, InsureDAO and UnoRe.
In September 2023 the company announced an Ethereum Layer 2 cover aggregator, initially channeling more than $200m of Nexus Mutual underwriting capital to Layer 2 networks to reduce the transaction cost of buying cover, launching with 12 supported protocols including Curve, Aave and Safe and stated plans to reach over 40. A B2B version of the product was reported to be in development at that time.
Founding story
The company was founded by Y Combinator alumni Jeremiah Smith (Founder & CEO), an entrepreneur and former scientist with an Imperial College PhD awarded in 2015 and prior roles at DX.network, Gelt and CarbonChain (YC S20), and Yury Oparin (Founder & CTO), who has over 15 years of experience across Sprint, UBS and Telstra. The team states it has worked in blockchain since 2017, including building an early real-time data exchange on Ethereum and regulated DLT infrastructure for bond and equity trading.
Business model
OpenCover does not underwrite risk itself; it acts as an aggregator and distribution layer, partnering with vetted onchain underwriters (initially including Nexus Mutual) to sell cover to retail and institutional buyers, and additionally publishes industry data on the DeFi cover market. Specific pricing or take-rate terms beyond advertised consumer premiums are not disclosed in the sources.
Not stated in the sources; the consumer-facing offering is priced as recurring cover premiums (advertised from $2 per week for $5,000 of coverage) purchased and renewed through the OpenCover platform.
Traction
Website counters attribute to its underwriting partners cumulative payouts since 2019, an active cover amount, underwriting capital and over $5bn of all-time value covered. At the September 2023 Layer 2 aggregator launch the company made over $200m of Nexus Mutual underwriting capital available on Layer 2 and supported 12 protocols, targeting more than 40 by year-end.
Latest developments
The site promotes "covered vaults" as a newer offering alongside portfolio cover, institutional services and the industry data dashboard; the leadership team includes Csongor Bokay as VP of Blockchain Engineering, leading blockchain infrastructure development.
βΈFull profile β market position, technology, go-to-market, geography, history, risks & controversies
Market position
OpenCover positions itself as an aggregator across multiple DeFi cover providers rather than a single underwriter, and claims to be the leading source of onchain insurance and cover data, tracking 96.7% of DeFi cover activity by public TVL. It described its September 2023 launch as the first Ethereum Layer 2 cover aggregator. The providers it profiles β Nexus Mutual, Unslashed Finance, InsurAce, Chainproof, Sherlock, Ease, InsureDAO and UnoRe β constitute the surrounding cover market; some are simultaneously supply partners.
Aggregation of multiple vetted underwriters in one interface with comparison tooling, Layer 2 distribution to lower purchase costs, tokenised ERC-721 proof of cover, low entry-level premiums, and a proprietary industry dataset covering most of the DeFi cover market.
Technology
The platform issues ERC-721 proof-of-cover tokens and connects offchain components with onchain infrastructure, operating cross-chain and multi-protocol. Its Layer 2 aggregator routes underwriter capacity onto Ethereum Layer 2 networks to cut transaction costs. The data product is compiled from onchain events, smart contract state and transaction traces across seven chains.
Go-to-market
Direct self-serve purchase and renewal of cover through the OpenCover web app, supported by content marketing (an industry data dashboard, a learning library, cover-provider profiles and a monthly "Alpha Memo" newsletter), a public Discord community and X presence, plus a separate institutional sales track and a reported B2B product.
Individual crypto and DeFi portfolio holders seeking protection against protocol hacks and stablecoin depegs, and institutions or organisations requiring bespoke onchain protection at enterprise scale.
Geography
Listed offices at 2261 Market St, San Francisco, California, USA and 71-75 Shelton Street, London WC2H 9JQ, UK; press coverage describes the company as San Francisco- and London-based. Data and cover coverage span Ethereum, Polygon, Arbitrum, Optimism, BNB Smart Chain, Astar and Avalanche.
History
Website copyright dates run from 2021. In September 2023 OpenCover disclosed $4.6m in total funding and launched its Ethereum Layer 2 cover aggregator, while working on a B2B version of the product. The current site markets portfolio cover, covered vaults, institutional services and an industry data product.
Risks & controversies
No controversies are reported in the sources. The sources note that onchain risk mitigation remains an unsolved problem with billions lost annually to bad actors and technical failures, and that claim conditions, assessment and payout mechanisms vary across cover providers. Headline statistics on the site are attributed to underwriting partners rather than to OpenCover itself, and one comparison table on the homepage contains apparently unrelated placeholder text.
Compiled by commissioned research from 8 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Timeline Β· 2
launches, deals, and filingsOpenCover announced it had raised $4.6 million in total funding. Backers included the Base Ecosystem Fund and existing investors NFX, Jump, Alliance, Village Global and Orange DAO, plus Coinbase Ventures and a dozen Web3 angels.
$4.6M source β
OpenCover launched what it described as the first Ethereum Layer 2 cover (insurance alternative) aggregator, making over $200m of underwriting capital β initially from underwriter Nexus Mutual β accessible on Ethereum Layer 2 blockchains to reduce transaction costs of purchasing cover. It launched with support for 12 protocols including Curve, Aave and Safe, with plans to expand to over 40 protocols by year-end.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
βΈResearch sources Β· 8
primary sources listed
- OpenCoveropencover.com Β· web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does OpenCover do?
- OpenCover is a DeFi cover aggregator that lets individuals and institutions buy onchain risk protection from vetted underwriters.
- Who founded OpenCover?
- OpenCover was founded by Jeremiah Smith, PhD, Yury Oparin in 2021.
- Who are OpenCover's investors?
- OpenCover's investors include Alliance DAO (ex DeFi Alliance), Coinbase Ventures, NFX.



