Bankless · Monday, July 13, 2026
Dan Held clarifies that Satoshi Nakamoto's use of the word 'cash' in early Bitcoin discussions referred to irreversibility and privacy, not everyday transaction use. He explains that the cypherpunk community, to which Satoshi was writing, understood 'cash' in this specific technical context, distinguishing it from common currency.
“The early community, the word cash actually means that. So when the Bitcoin white paper, which are on the cryptographer mailing list, the cypherpunks don't use the word cash to mean everyday transactions. That's a huge misconception.”
“It means a couple different things. It means a one-way function. That means once I make a payment, it can't be reversed. So it's irreversible. That's what a cash transaction is like. If I pay you cash for your plant in the background, you can't ask for that back unless you want to give it back. So it means it's irreversible and usually means that it's private. Between the two parties, yeah. That was a big component that the Cypherpunks really cared about.”
“Now, Bitcoin is pseudonymous. We don't know which Bitcoin address, who owns which address. But if we ever de-anonymize, if you've owned an address, then we can trace through the blockchain and probably figure out some of your ownership. But it is still difficult. It's not easy.”