Sign up for our daily briefing
Make your busy days simpler with the Axios AM and PM newsletters. Catch up on what's new and why it matters in just 5 minutes.
Catch up on the day's biggest business stories
Subscribe to the Axios Closer newsletter for insights into the day’s business news and trends and why they matter.
Sign up for Axios Pro Rata
Dive into the world of dealmakers across VC, PE and M&A with Axios Pro Rata. Delivered daily to your inbox by Dan Primack and Kia Kokalitcheva.
Sports news worthy of your time
Binge on the stats and stories that drive the sports world with the Axios Sports newsletter. Sign up for free.
Tech news worthy of your time
Get our smart take on technology from the Valley and D.C. with Axios Login. Sign up for free.
Get the inside stories
Get an insider's guide to the new White House with Axios Sneak Peek. Sign up for free.
Catch up on coronavirus stories and special reports, curated by Mike Allen everyday
Catch up on coronavirus stories and special reports, curated by Mike Allen everyday
Want a daily digest of the top Denver news?
Get a daily digest of the most important stories affecting your hometown with Axios Denver
Want a daily digest of the top Des Moines news?
Get a daily digest of the most important stories affecting your hometown with the Axios Des Moines newsletter.
Want a daily digest of the top Twin Cities news?
Get a daily digest of the most important stories affecting your hometown with Axios Twin Cities
Want a daily digest of the top Tampa Bay news?
Get a daily digest of the most important stories affecting your hometown with the Axios Tampa Bay newsletter.
Want a daily digest of the top Charlotte news?
Get a daily digest of the most important stories affecting your hometown with Axios Charlotte
Want a daily digest of the top Nashville news?
Get a daily digest of the most important stories affecting your hometown with the Axios Nashville newsletter.
Want a daily digest of the top Columbus news?
Get a daily digest of the most important stories affecting your hometown with the Axios Columbus newsletter.
Want a daily digest of the top Dallas news?
Get a daily digest of the most important stories affecting your hometown with the Axios Dallas newsletter.
Want a daily digest of the top Austin news?
Get a daily digest of the most important stories affecting your hometown with the Axios Austin newsletter.
Want a daily digest of the top Atlanta news?
Get a daily digest of the most important stories affecting your hometown with the Axios Atlanta newsletter.
Want a daily digest of the top Philadelphia news?
Get a daily digest of the most important stories affecting your hometown with the Axios Philadelphia newsletter.
Want a daily digest of the top Chicago news?
Get a daily digest of the most important stories affecting your hometown with the Axios Chicago newsletter.
Sign up for Axios NW Arkansas
Stay up-to-date on the most important and interesting stories affecting NW Arkansas, authored by local reporters
Want a daily digest of the top DC news?
Get a daily digest of the most important stories affecting your hometown with the Axios DC newsletter.
Illustration: Rebecca Zisser / Axios
Ledger, a French developer of hardware wallets for cryptocurrency, said Thursday that it has raised around $75 million in new venture capital funding.
Why it matters: Because the startup's popularity — a source says it's profitable with around $56 million in 2017 revenue on more than a million wallets sold — reflects the fundamental contradiction of crypto securities: They are built on a technology most notable for its computer science breakthrough in verification (i.e., solving the Byzantine Generals Problem), but their unique/unrecoverable "keys" are prone to being lost or hacked without offline storage.
DFJ Esprit led the Series B round, and was joined by FirstMark Capital, Cathay Innovation, Korelya Capital and return backers CapHorn Invest, GDTRE and Digital Currency Group.
Proceeds will be used both to expand hardware production capacity (there is currently an order backlog) and also expand a new software business aimed at corporations and financial institutions that rely on large, in-house server structures.