Bitcoin transaction sent, over 40 meter ham band.
I am a big fan of bitcoin, I saw this screenshot on the btc forum, which I often visit. Whether you know a lot about bitcoin or not, this is a pretty revolutionary first. BTC allows anyone anywhere to send "value" to anyone else, without banking, without intermediaries, without interest, and until now has always required a physical layer of some kind of Internet connection, at least. Here are a couple of guys using the radio instead of the Internet.
This is at the very bottom of the 40-meter range that is reserved for radio Amateurs in each country. On the forum where I grabbed this screenshot, there was no mention at all that this is even a ham group. It's not difficult for radio rebels to do this, but especially in the US, it would certainly be better to get a license than to ever knock on the FCC's door. In the US, a technician (novice) license can use this slice for the CW, but you must be a General to transmit data there.
The ham boys have been doing computer communications over the radio for decades, but this is really a first. I haven't reviewed the laws, but this may be a gray area, at least for American hams. It looks like you shouldn't be running a business for profit by air (but guys buy and sell ham informally by air all the time). These are extreme geeky guys sending each other a couple of bucks who are definitely not going to overthrow Walmart any time soon.