Blockchain : Robots Can’t Hold Stuff Very Well, But You Can HelpRobots Can’t Hold Stuff Very Well, But You Can HelpWhat is the Blockchain? A block chain is a transaction database shared by all nodes participating in a system based on the Bitcoin protocol. A full copy of a currency’s block chain contains every transaction ever executed in the currency. With this information, one can find out how much value belonged to each address at any point in history. Don’t forget to share the post if you love it !