Social Impact

Beyond the technology

Most blockchain discussion is technical. The more interesting questions are about what happens to societies when money and record-keeping no longer require a trusted institution in the middle.

This is the strand that runs through most Blockchain Brussels events. We are as interested in the consequences as the cryptography.

Financial access

Roughly a billion adults have no bank account. A blockchain wallet needs no permission, no branch, no minimum balance, and no credit check.

That is a genuine shift. It is also incomplete: it needs a smartphone, an internet connection, and enough literacy to manage keys safely. Losing a password loses everything, with no recourse.

Privacy, both ways

Public blockchains are radically transparent. Every transaction is visible forever to anyone. That is excellent for auditing public spending and poor for personal privacy, since addresses can often be linked back to people.

The tension between transparency and privacy is unresolved, and it is where a lot of the current regulatory argument sits.

Energy

Proof-of-work chains consume electricity comparable to mid-sized countries. Whether that is waste or the price of a neutral settlement system depends on what you think the system is worth, and increasingly on where the electricity comes from.

Proof of stake reduces the figure by orders of magnitude, which is part of why Ethereum switched.

Power and concentration

The founding pitch was decentralisation. Reality is more mixed: mining is concentrated among a few large operations, holdings are heavily unequal, and much activity flows through a handful of exchanges.

Whether blockchains distribute power or reconcentrate it in new hands is an open question, and a good argument to have over a beer.