21, a San Francisco-based startup dedicated to helping developers integrate Bitcoin into apps, announced that it is open sourcing its software. 21 enables developers to add bitcoin payments to any app with a single line of code. 21 ultimately aims to create a "machine payable web," or a platform where computers can use bitcoin to pay for APIs, thereby removing the friction of manual signups and payments. Developers can now download 21 for free and use the software to earn bitcoin, integrate bitcoin into their apps, and connect to other machines on the network.
But in short, we believe that a third web is coming. The first was the World Wide Web of documents, with hyperlinks between nodes. The second was the Social Web, with links between nodes representing friend relationships. And the third is the Machine-Payable Web, where the links between nodes represent payments between machines. Why would such a web be desirable? We start with the observation that you don’t want to go through a paywall every time you visit a new website. Instead, you just want to click a link. Similarly, you don’t want to enter in your credit card every time you try out a new paid API. Instead, you just want to send it some digital currency.