Ok, we can somewhat scale to 1 million.
Let's see what will happen at 10.
10 million transactions a day is 3 Gb of data per day. 1 Tb per year.
30 petabytes of total network traffic.
100 million transactions a day is 30 Gb of data per day. 10 Tb per year.
3,000 petabytes of total daily network traffic. Current Internet traffic is about 1,000 petabytes per day,
so this is where we will shutdown the Internet
What about VISA level of 2000 transactions a second? 50 Gb of data per day.
Also, keep in mind that each transaction, as I understand, is sent twice - as an announcement and as a part of a block.
Overall, I don't know. Maybe I worry too soon
Maybe by the time it reaches VISA's level, 50-100 Gb per client (or 5,000-10,000 petabytes total) per day wouldn't be a problem...