German software developer who created the viral "What is Bitcoin?" video and BitcoinJS, served as CTO of Ripple, co-created the Interledger Protocol, and is known for losing the password to an IronKey containing 7,002 BTC.
Pseudonymous creator of Bitcoin who published the whitepaper in 2008 and launched the network in 2009.
Pioneering cryptographer and cypherpunk who received the first-ever Bitcoin transaction from Satoshi Nakamoto in 2009. Early developer of PGP and RPOW.
Early Bitcoin developer and pioneer who made the first real-world Bitcoin purchase (10,000 BTC for two pizzas on May 22, 2010), created the first MacOS Bitcoin client, and pioneered GPU mining.
The reference implementation of the Bitcoin protocol, maintained by a global community of open-source developers.
Nathaniel Popper's narrative history of Bitcoin, tracing the cryptocurrency from its cypherpunk origins through its first major boom, told through the stories of the key figures who built it.