Commodity money cans or foil pouches of mackerel fish fillets, which have a fairly standard cost and are easy to store. These may be exchanged for many services in prisons where personal possession of currency is prohibited. In situations where the commodity is metal, typically gold or silver, a government mint will often coin money by placing a mark on the metal that serves as a guarantee of the weight and purity of the metal. In doing so, the government will often impose a fee which is known as seigniorage. The role of a mint and of coin differs between commodity money
Social peer-to-peer processes in projects that in turn put their adapted source code in the public domain. The fifth requirement is cultural. The diffusion of mass intellectuality, (i.e. the distribution of human intelligence) and associated changes in ways of feeling and being (ontology), ways of knowing (epistemology) and value constellations (axiology) have been instrumental in creating the type of cooperative individualism needed to sustain an ethos which can enable P2P projects. There are two important aspects to the emergence of P2P in the economic sphere. On the one hand, as format for peer production processes, it is emerging as a 'third mode of