The German capital has become a global hub for Bitcoin, and the Berliners have been watching Bitcoin's roller-coaster ride particularly closely in recent weeks. CGTN's Guy Henderson reports.

Room 77 — once the go-to meet-up spot for crypto-anarchists. Nowadays, there are plenty of capitalists here too. It's this merger of two distinct Berlin cultures that's made the city a global Bitcoin hub. It's not quite how the bar's owner had envisioned it — Joerg Pletzer seems ready for a revolution.

"The power of the banks of our society is a huge, huge problem."

But if the newcomers end up helping — he'll just about accept it.

JORG PLATZER, ORGANIZER CRYPTO-CURRENCY MEET-UP "Bitcoin doesn't care why they do it or why they adopt it. New crypto traders and crypto-speculators now: they are not motivated politically, they are motivated because they want to make some profits."

Not the case, apparently, for all new entrants.

CRYPTO-ENTREPRENEUR, FORMER PRIVATE FINANCIER "We are on the verge of a paradigm change in our society — in the same way that government and religion were separated 150 years ago, with the French revolution, I think government and money creation are being separated."

But it's not a perfect match: Radko Albrecht's been to Room 77 himself. He runs a start-up, loaning cryptocurrencies to small businesses. This former banker's not out to sink his former colleagues.

RADOSLAV ALBRECHT, CEO BITBOND "Some people believe this has huge implications, a lot of things will change. Personally, I don't believe it will change so much in terms of the power that governments have. I think it will change a lot for the economy, I think it will open up new opportunities and companies will be formed — that are really disruptive, that bring new services, better services than what we have today and what we had in the past."

Here's one of several more backstreet bitcoin-backing businesses — a tattoo parlor that accepts it as payment, an expression of defiance.

JORG KOPSEL 'BITCH WEDDING' TATTOO PARLOR "It's a little bit of anarchy. People who've got their personal freedoms, paying for their products and buying something — I like it, it's not controlled by government."

That rebellious streak still seems to run right through the heart of Berlin's crypto-currency scene. These days, though, some voices are more moderate than others. Guy Henderson, CGTN, Berlin.