DMM Bitcoin lays out fundraising plan to repay theft victims

Cause of $300 million-plus “unauthorized leak” still unknown as company gets set for big fundraise

article-image

Roman Samborskyi/Shutterstock modified by Blockworks

share

A Japanese crypto exchange plans to pay back victims of a recent unauthorized leak in the coming days via raising capital.

DMM Bitcoin reiterated in a translated post that it would make available the entire amount of customer-held bitcoin lost in the leak “with support from our group companies.”

The company took out a loan worth $32 million, or five billion yen, on Monday. 

Read more: Japanese crypto exchange reports bitcoin theft worth $305M

DMM Bitcoin noted it planned to raise $310 million (48 billion yen) on June 7. It then seeks to secure an additional roughly $13 million (two billion yen) in subordinated debt on June 10.

The update comes about a week after DMM Bitcoin revealed 4,502.9 BTC — worth $305.1 million at the time — was stolen. After the theft took place on May 31 at 12:26 am ET (1:26 pm JST), the company stopped processing crypto withdrawals, spot market purchase orders and new leveraged trading positions.

DMM Bitcoin quickly said customer bitcoin deposits would be fully guaranteed — a promise the company has now repeated in its latest post. 

The crypto exchange intends to release a report with more details about the leak when it has them.

“We will continue to procure [b]itcoin equivalent to the amount leaked, taking care not to impact the market,” the company wrote. “We are currently continuing to conduct an investigation to determine the cause of the unauthorized leak.”


Get the news in your inbox. Explore Blockworks newsletters:

Tags

Decoding crypto and the markets. Daily, with Byron Gilliam.

Upcoming Events

Javits Center North | 445 11th Ave

Tues - Thurs, March 24 - 26, 2026

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

allora-image.png

Research

Decentralized AI coordination networks solve crypto's growing architectural mismatch: applications built on trustless infrastructure shouldn't depend on centralized intelligence providers. By turning model outputs into competitive marketplaces, protocols like Allora are building the permissionless intelligence layer that AI-powered DeFi and autonomous agents require.

article-image

For new growth, crypto may need to shed tired norms like over-raising and the hoarding of investment resources

article-image

Ethereum rolls out Fusaka, setting the stage for a stronger blob fee market and renewed deflationary potential

article-image

Futuristic DeFi is stuck inside the computer. An old idea might be its escape hatch

article-image

Money market indicators are flashing liquidity stress again as crypto underperforms equities

article-image

From passageways to penumbras: a history of private life

article-image

BTC’s Asia-session move and Ethena’s weaker yields reflect a market adjusting to tighter yen funding and softer derivatives carry