This Cypherpunk is a computer engineer, one of the developers of the crypto++ library, and co-author of the VMAC authentication algorithm.

But his most important achievement is the creation of the b-money idea. It is a concept of an anonymous distributed electronic money system that he published in a 1998 paper. The white paper was released a decade before Satoshi Nakamoto's article "Bitcoin: A Peer-to-Peer Electronic Cash System”.