The cryptocurrency known as bitcoin and the digital ledger upon which its transactions are recorded, the blockchain, are now being taken seriously by more than just e-pirates. Photograph: Chris Ratcliffe/Bloomberg

“Don’t file this piece until you’re confident you could walk into any bar in the world and explain the blockchain clearly to a complete stranger.” The(...)

An Australian Federal Police officer closes the door of the garage after searching the home of alleged  bitcoin creator Craig Steven Wright in Sydney’s north shore. Photograph: David Gray/Reuters

Australian police raided the Sydney home and office on Wednesday of a man named by a magazine as the probable creator of Bitcoin and holder of hundred(...)

Unlike paper money and gold, cryptocurrency doesn’t physically exist, consisting of digital bits and bytes. Libertarians and cryptographer anarchists (...)

Quantum cryptography offers a path to improved internet security, the idea being that you can hide information in the quantum state of sub-atomic particles

Fans of Breaking Bad may inadvertently know more about quantum mechanics than they think. Walter White is a quantum character. As one fans’ website pu(...)

 A poster on display at the Bitcoin Finance conference which is taking place in Dublin today. European Union banks should shun virtual currencies such as bitcoin until a system of rules to prevent abuses are put in place, the European Banking Authority has said. Photo: Cyril Byrne/The Irish Times

European Union banks should shun virtual currencies such as bitcoin until a system of rules to prevent abuses are put in place, according to the bloc(...)

The man believed to be Bitcoin currency founder Satoshi Nakamoto talks to reporters as he arrives at his home in Temple City, California, this week. Photograph: David McNew/Reuters

In one of Edgar Allan Poe’s classic tales, The Purloined Letter , a famous detective, C Augu(...)

Dorian S. Nakamoto, identified by Newsweek magazine as the founder of Bitcoin, speaks to members of the media as he arrives home in Temple City, California. Photograph: Jonathan Alcorn/Bloomberg

A Japanese American man thought to be the reclusive multi-millionaire father of Bitcoin emerged from a modest Southern California home and denied i(...)

Nakamoto’s estimated worth is around $400 million. Photograph: Jim Urquhart/Reuters

Newsweek claims to have unmasked the identity of Bitcoin creator Satoshi Nakamoto. Since the cyber currency was introduced five years ag(...)

The UK’s welcoming approach to bitcoin contrasts with the approach of other countries, amid concerns about its use for tax evasion and money laundering. Photograph: Reuters/Jim Urquhart

Britain’s tax authority plans to ditch its levy on bitcoin trading only days after the collapse of Mt Gox, one of the virtual currency’s leadin(...)

Jeremy Allaire: “I have long-term savings in bitcoin, though not a huge amount of my assets. It is important that I have long term belief in the currency. I give my sons their allowance in bitcoin and I’ve bought everything from socks to food to electronics with it.” Photograph: Brenda Fitzsimons

It has been a difficult seven days for bitcoin. Last Friday the world’s largest bitcoin exchange Mt Gox halted withdrawals of the digital currency (...)