Recently, I was reading about the history of Bitcoin, and I was surprised by how crucial Adam Back was to all of this. Most people believe that Satoshi Nakamoto created Bitcoin out of nothing, but the reality is more complex. It turns out that Adam Back had already been part of the cypherpunk scene since the 1990s, deeply involved in cryptography and decentralized systems.

In 1997, Adam Back invented something called Hashcash, which was basically a Proof of Work mechanism designed to combat spam in emails. It sounds simple, but it was revolutionary. When Satoshi Nakamoto wrote the Libro Blanco de Bitcoin in 2008, he literally cited Hashcash as a fundamental basis. Even there was direct communication between them before the launch. That is, Adam Back was not only a witness to the creation of Bitcoin, but his ideas were essential for it to work.

After Bitcoin went live in 2009, Adam Back continued to be a key piece in the philosophy and direction of the protocol. In 2014, he co-founded Blockstream, a company focused on building Bitcoin infrastructure, sidechains, and the Red Liquid. And what’s interesting is that in these past few years, Adam Back has been researching post-quantum security, making sure that Bitcoin can withstand future technological threats.

Beyond the controversies that have surrounded Blockstream, Adam Back is undoubtedly one of Bitcoin’s living pillars. He is the bridge between the original ideals of the cypherpunks and the largest decentralized financial network that exists today. Few in the history of cryptocurrencies can say that they helped make something as important as Bitcoin possible. Adam Back is one of them.