Crypto wallet infrastructure company Turnkey has raised $30 million in Series B funding led by Bain Capital Crypto, Fortune reported on Monday.

Turnkey, which was co-founded by former Coinbase employees Bryce Ferguson and Jack Kearney, aims to help developers build user-friendly wallets using application programming interfaces (APIs).

This can help wallets become more streamlined and easy to use, Ferguson said.

“We’re moving from this world of these slow, clunky systems that were designed for buying and holding crypto to very high throughput, machine-based transactions,” he said, according to Fortune’s report.

The company counts prediction market platform Polymarket, non-fungible token (NFT) marketplace Magic Eden and Stripe-owned stablecoin firm Bridge among its clients.

The funding also included contributions from Lightsped Faction and Galaxy Ventures, who led Turnkey’s $15 million Series A in April 2024.

Turnkey will use its new capital to grows its headcount, which currently sits at 35 employees. Principally, Turnkey is looking to expand its engineering team, according to the report.

The company did not immediately respond to CoinDesk’s request for further comment.

Michael Saylor-led Stategy (MSTR) yet again topped up its sizable bitcoin BTC holdings last week, adding an additional 1,045 BTC for $110.2 million.

The average purchase price of this latest buy was $105,426 each and the average purchase price for the company’s 582,000 coin stack rose to $70,086 each. With bitcoin trading at about $107,500 Monday morning, MSTR’s holdings are worth roughly $62.5 billion.

Last week’s buys were funded via at-the-market sales of MSTR’s STRK and STRF preferred stocks, according to an SEC filing.

MSTR stock is higher by 2% in premarket action as bitcoin rose from Friday’s close in the $105,000 area.

Sui-based decentralized exchange (DEX) Cetus Protocol is back online following a 17-day outage spurred by last month’s $223 million exploit.

The protocol recovered around $162 million worth of stolen funds and is continuing legal action against the attacker, who did not respond to the DEX’s requests to negotiate.

Sui stepped in to compensate Cetus for the initial losses, issuing a loan to reimburse impacted users on May 28. DefiLlama data shows that Cetus’ total value locked (TVL) was $284 million before the exploit and is now down to $124 million.

The attacker exploited a flaw in Cetus’ shared math library contract, tricking the protocol into believing that one token was worth millions of dollars.

Despite attempts to negotiate and come to a settlement, the attacker began laundering funds through coin-mixing service Tornado Cash.

Cetus has refilled the liquidity pools with between 85% to 99% of their initial liquidity, meaning that users can now trade on the platform without exceptional slippage.

The Cetus token (CETUS) has lost 44% of its value over the past month and is down around 1% over the past 24 hours, CoinMarketCap shows.