Matthew Leising Bloomberg

Ethereum founder Vitalik Buterin says the most significant change to the Ethereum blockchain since 2015 sets up the stage for an even bigger upgrade to reduce its energy use by 99 percent.

Ethereum and better-known-rival Bitcoin both operate using a proof-of-work system that requires a global network of computers running around the clock. Users and developers of the world’s most-used blockchain have been wrangling with its carbon-footprint problem for as long as it’s been around. Now, they say, several recent breakthroughs will f...

Is the unknown creator of Bitcoin writing a book about it? That could be concluded from a cryptic message posted Friday at a website possibly linked to Satoshi Nakamoto, the pseudonym used by the person or people who released the original Bitcoin white paper in 2008.

Ethereum founder Vitalik Buterin says the most significant change to the Ethereum blockchain since 2015 sets up the stage for an even bigger upgrade to reduce its energy use by 99 percent.

Ethereum and better-known-rival Bitcoin both operate using a proof-of-work system that requires a global network of computers running around the clock. Users and developers of the world’s most-used blockchain have been wrangling with its carbon-footprint problem for as long as it’s been around. Now, they say, several recent breakthroughs will f...

Is the unknown creator of Bitcoin writing a book about it? That could be concluded from a cryptic message posted Friday at a website possibly linked to Satoshi Nakamoto, the pseudonym used by the person or people who released the original Bitcoin white paper in 2008.