Bitcoin

Recent deals highlight the rush by Europe’s time-honored insurers to get in on the technology that’s changing financial services on Wall Street.

The Spanish banking giant Santander has withdrawn from the bank consortium R3 CEV, becoming the second defector from the blockchain group this week after Goldman Sachs.

Platforms designed for face-to-face or paper transactions may not be the best enabler of payments through connected devices, but a system born out of the digital payments world could fare better.

The world's third-largest bank hasn't given up on bitcoin.

The technology behind bitcoin has almost endless use cases.