 Bitcoin days destroyed. Grinners asks, Bitcoin days destroyed is calculated by taking the number of bitcoins... and multiplying by the number of days it has been since those coins were last spent. What is the significance of this? What does this actually tell us? Well, what it tells us is it gives us an idea of maturity of coins. It gives us an idea of how often coins are moved and how big amounts they are moved. You can either look at somebody moving one bitcoin after a hundred days, equivalent to someone moving a hundred bitcoin after just one day of it sitting somewhere. That is Bitcoin days destroyed. It is the amount of bitcoin multiplied by the number of days... that that amount has been sitting in the same UTXO. It gives you an idea of the velocity of the network. Velocity in economic terms is the volume of money moving on some time factor. How much money is circulating in the economy? I leave this place, I give the taxi driver $20, and they stop at the gas station and pay $20 to the gas station. Then somebody buys a cup of coffee and something else, and they get changed, and they get that $20 back. Then they go and buy a muffin, and they pay with that, and they get some change. At the end of the day, the muffin company pays its employees and gives them one of the 20. That 20 has now moved six times in a day. The important thing to recognize is that, while it is one unit of $20, it has participated in $120 worth of economic activity. Overall, by changing hands rapidly. In order to be able to get an appreciation for velocity of the economy, we use the metric of Bitcoin days destroyed. It tells us either that money is moving very soon after it stopped moving, or that very large volumes are moving. The product of those two numbers is the metric. I hope that helps explain it. I think I have only really seen one place track that, which is blockchain.com. They had the chart running since the very early days. It was one of the first charts that nobody else was offering in terms of analysis of the blockchain. I still think it is one of the few places where you see that metric. I find it fascinating. Every now and then, you will see a news article or someone tweeting and saying, there is a lot of money on the move, and they will use Bitcoin days destroyed to give people an idea of the magnitude and maturity or age of the money that just moved. A very interesting point by Camillo, that velocity of money means nothing for Austrian economics. Velocity of money as a concept that underlies value or economic value is definitely a Keynesian principle. I am not doing the economic analysis on this one, I am just explaining what it means. Thank you for jumping in and making that observation, Camillo. That is very interesting.