Cubist Launches ‘Non-custodial’ Web3 Private Key Manager

Blockworks exclusive: Cubist launch comes as Web2 and Web3 players alike parse best security practices for the crypto industry

article-image

a-image/Shutterstock, modified by Blockworks

share

Fresh off of locking down its $7 million seed round, Web3 infrastructure startup Cubist is deepening its own contribution to the crypto industry’s homegrown cross-chain security efforts. 

The San Diego-based firm hopes to combat Web3 vulnerabilities with its inaugural security solution, launched Tuesday.

Cubists’ offering is intended, in part, to capitalize on industry interest stemming from Ethereum’s long awaited Shapella upgrade, according to Chief Operating Officer Ann Stefan, also a co-founder.

The move is also designed, Stefan told Blockworks exclusively, to guard against unintentional errors that Web3 engineers introduce in coding tech stacks — the kind of errors that open up security vulnerabilities that leave dApp users vulnerable to exploits. That extends to token bridges connecting blockchain networks to Ethereum (ETH), she said. 

“Right now in Web3, engineers are having to think about the low-level bits and bytes of what they’re doing,” Stefan said in an interview. “They’re having to write a lot of low-level, error-prone, verbose code that spans the entire tech stack.” 

“So, there’s a couple of issues there. One is that you have to basically know everything to get anything done. And the second is that — just by the very nature of it — it’s prone to errors.”

Ann Stefan, Cubist co-founder/COO | Source: Cubist

Read more: Solving Web3’s Developer Problem: Web2 Remains Hesitant

The startup has partnered with fellow Web3 infrastructure company Ankr on the launch.  

“Really, where we’re coming [from] with this problem with Cubist is trying to abstract away much of that low-level detail, so that engineers can really focus on their product — and not have to try to be security experts and still be able to build secure products,” Stefan said. 

A statement from Cubist described the product as a “non-custodial key management platform” that is “designed to help infrastructure engineering teams secure and programmatically manage their private key.”

The crypto key management software is built so that “no one — including Cubist — can see, copy, or steal private user keys,” the company said in its statement. 

Cubist’s new key management software has already been “securing Ankr’s Ethereum validators, including the execution of safe withdrawals,” according to the release. 

Stanley Wu, Ankr’s co-founder and chief technology officer, said Cubist is “uniquely qualified to secure Ankr’s most critical workflows” when it comes to “Ethereum liquid staking.” 


Start your day with top crypto insights from David Canellis and Katherine Ross. Subscribe to the Empire newsletter.

Explore the growing intersection between crypto, macroeconomics, policy and finance with Ben Strack, Casey Wagner and Felix Jauvin. Subscribe to the Forward Guidance newsletter.

Get alpha directly in your inbox with the 0xResearch newsletter — market highlights, charts, degen trade ideas, governance updates, and more.

The Lightspeed newsletter is all things Solana, in your inbox, every day. Subscribe to daily Solana news from Jack Kubinec and Jeff Albus.

Tags

Upcoming Events

Javits Center North | 445 11th Ave

Tues - Thurs, March 18 - 20, 2025

Blockworks’ Digital Asset Summit (DAS) will feature conversations between the builders, allocators, and legislators who will shape the trajectory of the digital asset ecosystem in the US and abroad.

recent research

Research Report Templates (1).jpg

Research

With $13B in tokenized assets, strong institutional partnerships, and a clear first-mover advantage in the RWA space. The platform's methodical approach to regulatory compliance, coupled with its hybrid public-private architecture, positions it uniquely to capture significant market share in the emerging tokenization landscape. While current fee generation primarily stems from metadata transactions, the planned launch of Figure Markets, major exchange listings, and comprehensive market-making initiatives in 2025 could serve as powerful catalysts for growth.

article-image

Perena is built on the premise that as stablecoins proliferate, liquidity could fragment, and stablecoins aren’t useful if they aren’t liquid

article-image

From hackathons to trading tools and DAO governance, AI agents are redefining how we build and innovate

article-image

CME’s large bitcoin contracts are so big that investors are turning to micro bitcoin contracts

article-image

The third-largest stablecoin is going multichain for the first time in its seven-year history

article-image

Nano Labs’ news release notes confidence in bitcoin being “a reliable store of value amidst its rising global adoption”

article-image

Several big companies report third quarter earnings this week, likely moving markets