This surge in the bitcoin price seems no more likely to endure than the last one, says Matthew Partridge.
Bitcoin is the 21st century global online peer-to-peer currency. One of many so-called "cryptocurrencies", it is free from the interference of regulators and nation states, it has seen its value soar against traditional paper currencies.
There are many ways of buying in to the bitcoin boom. Dominic Frisby looks at the most common, and explains exactly how to buy bitcoins in the UK.
Stablecoins aim to counteract cryptocurrencies’ volatility. But if central banks get in on the act, they could finish off cryptocurrencies altogether.
There have been some wild claims made about the potential of blockchain technology, but doubts are starting to set in, says Simon Wilson.
2019 could be the year the technology behind bitcoin finally realises its potential and goes mainstream in financial markets, says Ben Judge.
Just 11 months ago, bitcoin reached a record price of nearly $20,000. Now it’s worth $4,300, its lowest level for more than a year.
Bitcoin’s spectacular slide is no surprise, given the speculative excess that surrounded its earlier rise. It’s not done falling yet, says Dominic Frisby. But its day will come again.
Dominic Frisby discusses how trust in the world’s financial institutions has collapsed, and asks if blockchain and cryptocurrencies such as bitcoin can help restore it.