Image link: https://i.imgur.com/3rA5lQ9.jpg
People of past eras would carve rocks into the shape of coins, in a proof of work format, to facilitate trade.
People of past eras would carve rocks into the shape of coins, in a proof of work format, to facilitate trade.
interesting, do you have any link to the source/document/scientific paper which describes it? Were rocks really used for trading?
Do you know which region this photo comes from?
Call me dumb ignorant, but no! In fact this part of science is really far from my circle of interests. But it is always good to learn something new, even about Micronesian tribes on bitcoin forum
